/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/mono-crafted_7.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 18:51:10,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 18:51:10,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 18:51:10,739 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 18:51:10,739 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 18:51:10,742 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 18:51:10,744 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 18:51:10,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 18:51:10,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 18:51:10,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 18:51:10,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 18:51:10,753 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 18:51:10,753 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 18:51:10,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 18:51:10,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 18:51:10,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 18:51:10,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 18:51:10,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 18:51:10,761 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 18:51:10,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 18:51:10,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 18:51:10,766 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 18:51:10,767 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 18:51:10,767 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 18:51:10,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 18:51:10,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 18:51:10,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 18:51:10,774 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 18:51:10,775 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 18:51:10,794 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 18:51:10,794 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 18:51:10,796 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 18:51:10,796 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 18:51:10,796 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 18:51:10,797 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 18:51:10,797 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 18:51:10,797 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 18:51:10,797 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 18:51:10,797 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 18:51:10,797 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 18:51:10,798 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 18:51:10,798 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 18:51:10,798 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 18:51:10,798 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 18:51:10,798 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 18:51:10,798 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 18:51:10,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 18:51:10,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 18:51:10,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 18:51:10,799 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 18:51:10,799 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 18:51:10,799 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 18:51:11,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 18:51:11,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 18:51:11,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 18:51:11,085 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 18:51:11,086 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 18:51:11,086 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/mono-crafted_7.c [2021-05-02 18:51:11,129 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/131dcc53e/5b83774a297d47f4a64c72eac475dc60/FLAG778f477be [2021-05-02 18:51:11,530 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 18:51:11,530 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_7.c [2021-05-02 18:51:11,534 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/131dcc53e/5b83774a297d47f4a64c72eac475dc60/FLAG778f477be [2021-05-02 18:51:11,545 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/131dcc53e/5b83774a297d47f4a64c72eac475dc60 [2021-05-02 18:51:11,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 18:51:11,549 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 18:51:11,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 18:51:11,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 18:51:11,554 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 18:51:11,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:51:11" (1/1) ... [2021-05-02 18:51:11,555 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dee2339 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:51:11, skipping insertion in model container [2021-05-02 18:51:11,555 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:51:11" (1/1) ... [2021-05-02 18:51:11,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 18:51:11,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 18:51:11,651 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_7.c[318,331] [2021-05-02 18:51:11,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:51:11,669 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 18:51:11,703 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_7.c[318,331] [2021-05-02 18:51:11,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:51:11,715 INFO L208 MainTranslator]: Completed translation [2021-05-02 18:51:11,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:51:11 WrapperNode [2021-05-02 18:51:11,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 18:51:11,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 18:51:11,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 18:51:11,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 18:51:11,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:51:11" (1/1) ... [2021-05-02 18:51:11,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:51:11" (1/1) ... [2021-05-02 18:51:11,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:51:11" (1/1) ... [2021-05-02 18:51:11,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:51:11" (1/1) ... [2021-05-02 18:51:11,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:51:11" (1/1) ... [2021-05-02 18:51:11,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:51:11" (1/1) ... [2021-05-02 18:51:11,749 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:51:11" (1/1) ... [2021-05-02 18:51:11,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 18:51:11,755 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 18:51:11,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 18:51:11,756 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 18:51:11,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:51:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 18:51:11,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 18:51:11,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 18:51:11,814 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 18:51:11,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 18:51:11,814 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 18:51:11,815 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 18:51:11,815 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 18:51:11,815 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 18:51:11,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 18:51:11,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 18:51:11,815 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 18:51:11,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 18:51:11,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 18:51:11,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 18:51:11,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 18:51:11,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 18:51:11,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 18:51:12,076 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 18:51:12,076 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-02 18:51:12,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:51:12 BoogieIcfgContainer [2021-05-02 18:51:12,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 18:51:12,078 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 18:51:12,078 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 18:51:12,088 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 18:51:12,091 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:51:12" (1/1) ... [2021-05-02 18:51:12,162 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< 0 v_main_~y~0_2) InVars {main_~y~0=v_main_~y~0_2} OutVars{main_~y~0=v_main_~y~0_2} AuxVars[] AssignedVars[] [2021-05-02 18:51:12,190 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 18:51:12,279 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 18:51:12,314 INFO L1112 elerationTransformer]: Accelerated Formula: (and (= v_main_~x~0_2 (+ v_main_~x~0_3 (- 2))) (= v_main_~y~0_1 (+ v_main_~y~0_2 (- 2))) (< 0 v_main_~y~0_2)) InVars {main_~x~0=v_main_~x~0_3, main_~y~0=v_main_~y~0_2} OutVars{main_~x~0=v_main_~x~0_2, main_~y~0=v_main_~y~0_1} AuxVars[] AssignedVars[main_~x~0, main_~y~0] with Formula: (or (and (= v_main_~x~0_3 v_main_~x~0_2) (= v_main_~y~0_2 v_main_~y~0_1) (= v_itFin_1 0) (<= v_main_~y~0_2 0)) (let ((.cse0 (* 2 v_itFin_1))) (and (<= v_main_~y~0_2 .cse0) (< v_itFin_1 (+ (div (+ v_main_~y~0_2 (- 1)) 2) 2)) (= v_main_~x~0_3 (+ .cse0 v_main_~x~0_2)) (= v_main_~y~0_2 (+ .cse0 v_main_~y~0_1)) (< 0 v_main_~y~0_2)))) InVars {main_~x~0=v_main_~x~0_3, main_~y~0=v_main_~y~0_2} OutVars{main_~x~0=v_main_~x~0_2, main_~y~0=v_main_~y~0_1} AuxVars[v_itFin_1] AssignedVars[main_~x~0, main_~y~0] [2021-05-02 18:51:12,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:51:12 BasicIcfg [2021-05-02 18:51:12,327 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 18:51:12,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 18:51:12,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 18:51:12,330 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 18:51:12,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 06:51:11" (1/4) ... [2021-05-02 18:51:12,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a32cd81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:51:12, skipping insertion in model container [2021-05-02 18:51:12,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:51:11" (2/4) ... [2021-05-02 18:51:12,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a32cd81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:51:12, skipping insertion in model container [2021-05-02 18:51:12,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:51:12" (3/4) ... [2021-05-02 18:51:12,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a32cd81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:51:12, skipping insertion in model container [2021-05-02 18:51:12,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:51:12" (4/4) ... [2021-05-02 18:51:12,335 INFO L111 eAbstractionObserver]: Analyzing ICFG mono-crafted_7.cJordan [2021-05-02 18:51:12,339 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 18:51:12,342 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 18:51:12,354 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 18:51:12,379 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 18:51:12,379 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 18:51:12,379 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 18:51:12,379 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 18:51:12,379 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 18:51:12,379 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 18:51:12,379 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 18:51:12,379 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 18:51:12,388 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 18:51:12,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 18:51:12,393 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:12,394 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:12,394 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:12,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:12,398 INFO L82 PathProgramCache]: Analyzing trace with hash 164364990, now seen corresponding path program 1 times [2021-05-02 18:51:12,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:12,404 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874412293] [2021-05-02 18:51:12,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:12,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:12,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:12,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:51:12,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:12,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874412293] [2021-05-02 18:51:12,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874412293] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:51:12,584 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:51:12,585 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 18:51:12,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167799846] [2021-05-02 18:51:12,591 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 18:51:12,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:12,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 18:51:12,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 18:51:12,604 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:12,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:12,647 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2021-05-02 18:51:12,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 18:51:12,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-02 18:51:12,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:12,654 INFO L225 Difference]: With dead ends: 21 [2021-05-02 18:51:12,655 INFO L226 Difference]: Without dead ends: 14 [2021-05-02 18:51:12,656 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 18:51:12,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-05-02 18:51:12,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-05-02 18:51:12,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:12,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-05-02 18:51:12,675 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2021-05-02 18:51:12,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:12,676 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-05-02 18:51:12,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:12,676 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-05-02 18:51:12,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 18:51:12,677 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:12,677 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:12,677 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 18:51:12,678 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:12,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:12,678 INFO L82 PathProgramCache]: Analyzing trace with hash 165288511, now seen corresponding path program 1 times [2021-05-02 18:51:12,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:12,679 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119074514] [2021-05-02 18:51:12,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:12,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:12,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:12,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:51:12,756 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:12,756 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119074514] [2021-05-02 18:51:12,756 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119074514] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:51:12,757 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:51:12,757 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 18:51:12,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813292726] [2021-05-02 18:51:12,758 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 18:51:12,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:12,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 18:51:12,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 18:51:12,758 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:12,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:12,807 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2021-05-02 18:51:12,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 18:51:12,809 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-02 18:51:12,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:12,809 INFO L225 Difference]: With dead ends: 16 [2021-05-02 18:51:12,809 INFO L226 Difference]: Without dead ends: 16 [2021-05-02 18:51:12,810 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 18:51:12,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-05-02 18:51:12,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-05-02 18:51:12,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:12,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-05-02 18:51:12,812 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2021-05-02 18:51:12,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:12,812 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-05-02 18:51:12,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:12,812 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-05-02 18:51:12,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-02 18:51:12,814 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:12,814 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:12,815 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 18:51:12,815 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:12,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:12,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1054746269, now seen corresponding path program 1 times [2021-05-02 18:51:12,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:12,818 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776657461] [2021-05-02 18:51:12,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:12,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:12,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:12,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:12,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:51:12,866 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:12,866 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776657461] [2021-05-02 18:51:12,866 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776657461] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:51:12,866 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:51:12,866 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 18:51:12,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105528204] [2021-05-02 18:51:12,867 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 18:51:12,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:12,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 18:51:12,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 18:51:12,867 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:12,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:12,917 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2021-05-02 18:51:12,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 18:51:12,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-05-02 18:51:12,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:12,918 INFO L225 Difference]: With dead ends: 17 [2021-05-02 18:51:12,918 INFO L226 Difference]: Without dead ends: 17 [2021-05-02 18:51:12,918 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 18:51:12,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-02 18:51:12,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-05-02 18:51:12,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:12,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-05-02 18:51:12,920 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 14 [2021-05-02 18:51:12,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:12,920 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-05-02 18:51:12,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:12,920 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-05-02 18:51:12,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-02 18:51:12,921 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:12,921 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:12,921 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-02 18:51:12,921 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:12,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:12,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1687477607, now seen corresponding path program 1 times [2021-05-02 18:51:12,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:12,922 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103038761] [2021-05-02 18:51:12,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:12,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:12,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:12,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:12,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:51:12,994 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:12,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103038761] [2021-05-02 18:51:12,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103038761] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:12,995 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418262815] [2021-05-02 18:51:12,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:13,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-05-02 18:51:13,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:13,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:51:13,090 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418262815] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:13,090 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:13,090 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2021-05-02 18:51:13,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949339397] [2021-05-02 18:51:13,090 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 18:51:13,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:13,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 18:51:13,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 18:51:13,091 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:13,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:13,172 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-05-02 18:51:13,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 18:51:13,173 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-05-02 18:51:13,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:13,173 INFO L225 Difference]: With dead ends: 19 [2021-05-02 18:51:13,173 INFO L226 Difference]: Without dead ends: 19 [2021-05-02 18:51:13,174 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 77.1ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-02 18:51:13,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-05-02 18:51:13,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-05-02 18:51:13,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:13,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-05-02 18:51:13,176 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2021-05-02 18:51:13,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:13,176 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-05-02 18:51:13,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:13,176 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-05-02 18:51:13,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-02 18:51:13,176 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:13,177 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:13,377 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:13,378 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:13,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:13,378 INFO L82 PathProgramCache]: Analyzing trace with hash -355394621, now seen corresponding path program 2 times [2021-05-02 18:51:13,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:13,378 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133928548] [2021-05-02 18:51:13,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:13,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:13,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:13,426 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-05-02 18:51:13,426 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:13,426 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133928548] [2021-05-02 18:51:13,427 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133928548] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:51:13,427 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:51:13,427 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 18:51:13,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973069814] [2021-05-02 18:51:13,427 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 18:51:13,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:13,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 18:51:13,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 18:51:13,428 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:13,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:13,466 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2021-05-02 18:51:13,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 18:51:13,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-05-02 18:51:13,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:13,466 INFO L225 Difference]: With dead ends: 21 [2021-05-02 18:51:13,467 INFO L226 Difference]: Without dead ends: 21 [2021-05-02 18:51:13,467 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 18:51:13,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-05-02 18:51:13,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2021-05-02 18:51:13,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:13,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-05-02 18:51:13,469 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 17 [2021-05-02 18:51:13,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:13,469 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-05-02 18:51:13,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:13,469 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-05-02 18:51:13,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-05-02 18:51:13,470 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:13,470 INFO L523 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:13,470 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-02 18:51:13,470 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:13,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:13,470 INFO L82 PathProgramCache]: Analyzing trace with hash 987258878, now seen corresponding path program 1 times [2021-05-02 18:51:13,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:13,471 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336894101] [2021-05-02 18:51:13,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:13,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:13,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:13,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:13,517 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:51:13,517 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:13,517 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336894101] [2021-05-02 18:51:13,517 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336894101] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:13,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440626811] [2021-05-02 18:51:13,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:13,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-02 18:51:13,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:13,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:13,613 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:51:13,613 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440626811] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:13,613 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:13,613 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2021-05-02 18:51:13,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010726384] [2021-05-02 18:51:13,614 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 18:51:13,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:13,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 18:51:13,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-02 18:51:13,615 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:13,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:13,725 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2021-05-02 18:51:13,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 18:51:13,726 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-05-02 18:51:13,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:13,726 INFO L225 Difference]: With dead ends: 22 [2021-05-02 18:51:13,726 INFO L226 Difference]: Without dead ends: 22 [2021-05-02 18:51:13,727 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 95.0ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-05-02 18:51:13,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-05-02 18:51:13,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-05-02 18:51:13,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:13,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-05-02 18:51:13,729 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 19 [2021-05-02 18:51:13,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:13,739 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-05-02 18:51:13,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:13,739 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-05-02 18:51:13,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-02 18:51:13,740 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:13,740 INFO L523 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:13,941 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:13,942 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:13,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:13,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1311371174, now seen corresponding path program 2 times [2021-05-02 18:51:13,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:13,943 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698474002] [2021-05-02 18:51:13,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:14,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:14,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:14,007 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:51:14,007 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:14,007 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698474002] [2021-05-02 18:51:14,007 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698474002] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:14,008 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900008666] [2021-05-02 18:51:14,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:14,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:51:14,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:14,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 18:51:14,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:14,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,142 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:51:14,142 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900008666] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:14,142 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:14,142 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-05-02 18:51:14,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433101840] [2021-05-02 18:51:14,143 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 18:51:14,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:14,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 18:51:14,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-02 18:51:14,146 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:14,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:14,295 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2021-05-02 18:51:14,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 18:51:14,296 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-05-02 18:51:14,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:14,296 INFO L225 Difference]: With dead ends: 24 [2021-05-02 18:51:14,296 INFO L226 Difference]: Without dead ends: 24 [2021-05-02 18:51:14,296 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 137.9ms TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-05-02 18:51:14,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-05-02 18:51:14,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-05-02 18:51:14,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:14,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2021-05-02 18:51:14,298 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 21 [2021-05-02 18:51:14,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:14,299 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-05-02 18:51:14,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:14,299 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2021-05-02 18:51:14,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-02 18:51:14,299 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:14,299 INFO L523 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:14,517 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:14,517 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:14,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:14,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1613306294, now seen corresponding path program 3 times [2021-05-02 18:51:14,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:14,518 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568659599] [2021-05-02 18:51:14,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:14,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:14,582 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:51:14,582 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:14,582 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568659599] [2021-05-02 18:51:14,582 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568659599] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:14,582 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529613343] [2021-05-02 18:51:14,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:14,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-02 18:51:14,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:14,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-02 18:51:14,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:14,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:14,691 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-05-02 18:51:14,692 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529613343] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:14,692 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:14,692 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 10 [2021-05-02 18:51:14,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054903834] [2021-05-02 18:51:14,692 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 18:51:14,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:14,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 18:51:14,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-02 18:51:14,693 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:14,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:14,895 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2021-05-02 18:51:14,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 18:51:14,895 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-05-02 18:51:14,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:14,897 INFO L225 Difference]: With dead ends: 29 [2021-05-02 18:51:14,897 INFO L226 Difference]: Without dead ends: 29 [2021-05-02 18:51:14,897 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 199.5ms TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2021-05-02 18:51:14,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-02 18:51:14,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2021-05-02 18:51:14,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:14,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-05-02 18:51:14,900 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2021-05-02 18:51:14,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:14,900 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-05-02 18:51:14,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:14,900 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-05-02 18:51:14,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-02 18:51:14,900 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:14,900 INFO L523 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:15,101 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:15,103 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:15,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:15,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1965053811, now seen corresponding path program 4 times [2021-05-02 18:51:15,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:15,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957534965] [2021-05-02 18:51:15,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:15,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:15,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:15,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:15,193 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-02 18:51:15,195 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:15,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957534965] [2021-05-02 18:51:15,195 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957534965] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:15,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137714570] [2021-05-02 18:51:15,195 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:15,236 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:51:15,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:15,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 18:51:15,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:15,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:15,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:15,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:15,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:15,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:15,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:15,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:15,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:15,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:15,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:15,292 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-02 18:51:15,292 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137714570] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:15,293 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:15,293 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10 [2021-05-02 18:51:15,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685885218] [2021-05-02 18:51:15,293 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 18:51:15,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:15,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 18:51:15,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-02 18:51:15,294 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:15,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:15,481 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2021-05-02 18:51:15,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 18:51:15,481 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-05-02 18:51:15,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:15,482 INFO L225 Difference]: With dead ends: 30 [2021-05-02 18:51:15,482 INFO L226 Difference]: Without dead ends: 30 [2021-05-02 18:51:15,482 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 162.7ms TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2021-05-02 18:51:15,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-05-02 18:51:15,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-05-02 18:51:15,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:15,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-05-02 18:51:15,484 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 27 [2021-05-02 18:51:15,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:15,484 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-05-02 18:51:15,484 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:15,485 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-05-02 18:51:15,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 18:51:15,485 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:15,485 INFO L523 BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:15,698 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:15,698 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:15,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:15,699 INFO L82 PathProgramCache]: Analyzing trace with hash 163921129, now seen corresponding path program 5 times [2021-05-02 18:51:15,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:15,699 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415998868] [2021-05-02 18:51:15,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:15,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:15,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:15,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:15,790 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-02 18:51:15,790 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:15,790 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415998868] [2021-05-02 18:51:15,790 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415998868] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:15,790 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959428861] [2021-05-02 18:51:15,790 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:15,844 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-05-02 18:51:15,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:15,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-02 18:51:15,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:15,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:15,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:15,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:15,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:15,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:15,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:15,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:15,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:15,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:15,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:15,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:15,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:15,929 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-02 18:51:15,929 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959428861] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:15,929 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:15,929 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 11 [2021-05-02 18:51:15,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589441184] [2021-05-02 18:51:15,929 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 18:51:15,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:15,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 18:51:15,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-02 18:51:15,930 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:16,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:16,141 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2021-05-02 18:51:16,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 18:51:16,141 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-05-02 18:51:16,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:16,142 INFO L225 Difference]: With dead ends: 32 [2021-05-02 18:51:16,142 INFO L226 Difference]: Without dead ends: 32 [2021-05-02 18:51:16,142 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 196.6ms TimeCoverageRelationStatistics Valid=118, Invalid=188, Unknown=0, NotChecked=0, Total=306 [2021-05-02 18:51:16,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-05-02 18:51:16,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-05-02 18:51:16,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:16,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2021-05-02 18:51:16,144 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 29 [2021-05-02 18:51:16,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:16,145 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2021-05-02 18:51:16,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:16,145 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2021-05-02 18:51:16,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-05-02 18:51:16,145 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:16,145 INFO L523 BasicCegarLoop]: trace histogram [9, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:16,348 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:16,351 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:16,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:16,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1704405573, now seen corresponding path program 6 times [2021-05-02 18:51:16,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:16,351 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073200277] [2021-05-02 18:51:16,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:16,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:16,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:16,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:16,428 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 24 proven. 56 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-02 18:51:16,428 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:16,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073200277] [2021-05-02 18:51:16,428 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073200277] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:16,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541220214] [2021-05-02 18:51:16,429 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:16,474 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-05-02 18:51:16,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:16,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-02 18:51:16,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:16,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:16,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:16,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:16,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:16,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:16,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:16,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:16,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:16,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:16,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:16,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:16,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:16,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:16,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:16,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:16,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:16,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:16,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:16,564 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:51:16,564 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541220214] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:16,564 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:16,564 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 14 [2021-05-02 18:51:16,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190862014] [2021-05-02 18:51:16,565 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 18:51:16,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:16,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 18:51:16,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-05-02 18:51:16,565 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:16,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:16,831 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-05-02 18:51:16,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 18:51:16,833 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-05-02 18:51:16,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:16,834 INFO L225 Difference]: With dead ends: 38 [2021-05-02 18:51:16,834 INFO L226 Difference]: Without dead ends: 38 [2021-05-02 18:51:16,834 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 262.4ms TimeCoverageRelationStatistics Valid=211, Invalid=341, Unknown=0, NotChecked=0, Total=552 [2021-05-02 18:51:16,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-02 18:51:16,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-05-02 18:51:16,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.121212121212121) internal successors, (37), 33 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:16,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2021-05-02 18:51:16,836 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 31 [2021-05-02 18:51:16,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:16,836 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2021-05-02 18:51:16,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:16,837 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2021-05-02 18:51:16,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-02 18:51:16,839 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:16,839 INFO L523 BasicCegarLoop]: trace histogram [12, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:17,048 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:17,049 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:17,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:17,049 INFO L82 PathProgramCache]: Analyzing trace with hash -747599783, now seen corresponding path program 7 times [2021-05-02 18:51:17,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:17,050 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530041683] [2021-05-02 18:51:17,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:17,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:17,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:17,182 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 33 proven. 110 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-02 18:51:17,182 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:17,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530041683] [2021-05-02 18:51:17,183 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530041683] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:17,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681027621] [2021-05-02 18:51:17,183 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:17,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:17,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-02 18:51:17,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:17,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:17,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:17,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:17,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:17,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:17,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:17,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:17,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:17,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:17,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:17,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:17,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:17,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:17,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:17,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:17,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:17,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:17,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:17,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:17,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:17,311 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 33 proven. 110 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-02 18:51:17,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681027621] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:17,311 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:17,312 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 15 [2021-05-02 18:51:17,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159089769] [2021-05-02 18:51:17,312 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-02 18:51:17,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:17,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-02 18:51:17,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-05-02 18:51:17,313 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 14 states have internal predecessors, (37), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:17,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:17,631 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2021-05-02 18:51:17,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-02 18:51:17,632 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 14 states have internal predecessors, (37), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2021-05-02 18:51:17,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:17,632 INFO L225 Difference]: With dead ends: 40 [2021-05-02 18:51:17,632 INFO L226 Difference]: Without dead ends: 40 [2021-05-02 18:51:17,633 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 320.4ms TimeCoverageRelationStatistics Valid=248, Invalid=402, Unknown=0, NotChecked=0, Total=650 [2021-05-02 18:51:17,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-05-02 18:51:17,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-05-02 18:51:17,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 35 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:17,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2021-05-02 18:51:17,635 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 37 [2021-05-02 18:51:17,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:17,635 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2021-05-02 18:51:17,635 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 14 states have internal predecessors, (37), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:17,635 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2021-05-02 18:51:17,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-02 18:51:17,636 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:17,636 INFO L523 BasicCegarLoop]: trace histogram [13, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:17,852 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-05-02 18:51:17,852 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:17,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:17,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1906137525, now seen corresponding path program 8 times [2021-05-02 18:51:17,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:17,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048079136] [2021-05-02 18:51:17,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:17,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:17,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:17,989 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 36 proven. 132 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-02 18:51:17,989 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:17,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048079136] [2021-05-02 18:51:17,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048079136] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:17,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919307538] [2021-05-02 18:51:17,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:18,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:51:18,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:18,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-02 18:51:18,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:18,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,109 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 36 proven. 132 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-02 18:51:18,109 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919307538] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:18,110 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:18,110 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 16 [2021-05-02 18:51:18,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967689429] [2021-05-02 18:51:18,110 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-02 18:51:18,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:18,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-02 18:51:18,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-05-02 18:51:18,111 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:18,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:18,482 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2021-05-02 18:51:18,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 18:51:18,482 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2021-05-02 18:51:18,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:18,482 INFO L225 Difference]: With dead ends: 42 [2021-05-02 18:51:18,482 INFO L226 Difference]: Without dead ends: 42 [2021-05-02 18:51:18,483 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 367.5ms TimeCoverageRelationStatistics Valid=288, Invalid=468, Unknown=0, NotChecked=0, Total=756 [2021-05-02 18:51:18,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-05-02 18:51:18,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-05-02 18:51:18,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 37 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:18,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2021-05-02 18:51:18,486 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 39 [2021-05-02 18:51:18,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:18,486 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2021-05-02 18:51:18,487 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:18,487 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2021-05-02 18:51:18,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-02 18:51:18,487 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:18,487 INFO L523 BasicCegarLoop]: trace histogram [14, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:18,688 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:18,689 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:18,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:18,692 INFO L82 PathProgramCache]: Analyzing trace with hash 937116689, now seen corresponding path program 9 times [2021-05-02 18:51:18,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:18,693 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941143034] [2021-05-02 18:51:18,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:18,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:18,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:18,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:18,851 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 39 proven. 156 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-02 18:51:18,851 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:18,851 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941143034] [2021-05-02 18:51:18,851 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941143034] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:18,851 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635998350] [2021-05-02 18:51:18,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:18,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-05-02 18:51:18,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:18,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 18:51:18,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:18,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:18,990 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 60 proven. 4 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-05-02 18:51:18,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635998350] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:18,990 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:18,990 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5] total 19 [2021-05-02 18:51:18,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407785456] [2021-05-02 18:51:18,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-02 18:51:18,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:18,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-02 18:51:18,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2021-05-02 18:51:18,991 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:19,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:19,490 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2021-05-02 18:51:19,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-02 18:51:19,491 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2021-05-02 18:51:19,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:19,491 INFO L225 Difference]: With dead ends: 47 [2021-05-02 18:51:19,491 INFO L226 Difference]: Without dead ends: 47 [2021-05-02 18:51:19,492 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 524.0ms TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2021-05-02 18:51:19,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-05-02 18:51:19,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2021-05-02 18:51:19,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 41 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:19,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2021-05-02 18:51:19,494 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 41 [2021-05-02 18:51:19,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:19,494 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2021-05-02 18:51:19,494 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:19,494 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2021-05-02 18:51:19,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-02 18:51:19,495 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:19,495 INFO L523 BasicCegarLoop]: trace histogram [16, 13, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:19,712 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:19,712 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:19,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:19,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1270675160, now seen corresponding path program 10 times [2021-05-02 18:51:19,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:19,713 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041995688] [2021-05-02 18:51:19,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:19,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:19,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:19,852 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 70 proven. 182 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-05-02 18:51:19,852 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:19,852 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041995688] [2021-05-02 18:51:19,852 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041995688] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:19,852 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296488764] [2021-05-02 18:51:19,852 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:19,910 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:51:19,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:19,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 18:51:19,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:19,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:19,994 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 70 proven. 182 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-05-02 18:51:19,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296488764] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:19,994 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:19,994 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 18 [2021-05-02 18:51:19,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285564408] [2021-05-02 18:51:19,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-02 18:51:19,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:19,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-02 18:51:19,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-05-02 18:51:19,996 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:20,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:20,338 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2021-05-02 18:51:20,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-02 18:51:20,338 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2021-05-02 18:51:20,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:20,339 INFO L225 Difference]: With dead ends: 48 [2021-05-02 18:51:20,339 INFO L226 Difference]: Without dead ends: 48 [2021-05-02 18:51:20,341 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 363.0ms TimeCoverageRelationStatistics Valid=377, Invalid=615, Unknown=0, NotChecked=0, Total=992 [2021-05-02 18:51:20,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-05-02 18:51:20,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-05-02 18:51:20,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:20,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2021-05-02 18:51:20,344 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 45 [2021-05-02 18:51:20,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:20,344 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2021-05-02 18:51:20,345 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:20,345 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2021-05-02 18:51:20,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-02 18:51:20,347 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:20,347 INFO L523 BasicCegarLoop]: trace histogram [17, 14, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:20,553 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-05-02 18:51:20,553 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:20,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:20,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1918452092, now seen corresponding path program 11 times [2021-05-02 18:51:20,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:20,553 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758282811] [2021-05-02 18:51:20,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:20,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:20,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:20,705 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 75 proven. 210 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-05-02 18:51:20,706 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:20,706 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758282811] [2021-05-02 18:51:20,706 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758282811] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:20,706 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564094212] [2021-05-02 18:51:20,706 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:20,779 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-05-02 18:51:20,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:20,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-02 18:51:20,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:20,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:20,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:20,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:20,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:20,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:20,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:20,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:20,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:20,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:20,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:20,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:20,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:20,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:20,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:20,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:20,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:20,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:20,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:20,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:20,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:20,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:20,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:20,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:20,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:20,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:20,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:20,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:20,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:20,870 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 75 proven. 210 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-05-02 18:51:20,870 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564094212] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:20,870 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:20,870 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 19 [2021-05-02 18:51:20,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662914066] [2021-05-02 18:51:20,870 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-02 18:51:20,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:20,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-02 18:51:20,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2021-05-02 18:51:20,872 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:21,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:21,338 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2021-05-02 18:51:21,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-02 18:51:21,338 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2021-05-02 18:51:21,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:21,339 INFO L225 Difference]: With dead ends: 50 [2021-05-02 18:51:21,339 INFO L226 Difference]: Without dead ends: 50 [2021-05-02 18:51:21,339 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 468.8ms TimeCoverageRelationStatistics Valid=426, Invalid=696, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 18:51:21,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-05-02 18:51:21,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-05-02 18:51:21,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 45 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:21,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2021-05-02 18:51:21,341 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 47 [2021-05-02 18:51:21,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:21,341 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2021-05-02 18:51:21,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:21,342 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2021-05-02 18:51:21,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-02 18:51:21,342 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:21,342 INFO L523 BasicCegarLoop]: trace histogram [18, 15, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:21,549 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-05-02 18:51:21,549 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:21,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:21,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1661825824, now seen corresponding path program 12 times [2021-05-02 18:51:21,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:21,549 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395301045] [2021-05-02 18:51:21,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:21,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:21,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:21,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:21,726 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 80 proven. 240 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-05-02 18:51:21,726 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:21,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395301045] [2021-05-02 18:51:21,726 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395301045] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:21,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411179133] [2021-05-02 18:51:21,727 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:21,778 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-05-02 18:51:21,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:21,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 6 conjunts are in the unsatisfiable core [2021-05-02 18:51:21,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:21,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:21,925 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 105 proven. 9 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2021-05-02 18:51:21,926 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411179133] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:21,926 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:21,926 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 6] total 23 [2021-05-02 18:51:21,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547498604] [2021-05-02 18:51:21,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-02 18:51:21,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:21,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-02 18:51:21,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2021-05-02 18:51:21,927 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 22 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:22,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:22,553 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2021-05-02 18:51:22,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-02 18:51:22,554 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 22 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2021-05-02 18:51:22,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:22,554 INFO L225 Difference]: With dead ends: 55 [2021-05-02 18:51:22,554 INFO L226 Difference]: Without dead ends: 55 [2021-05-02 18:51:22,555 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 722.8ms TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2021-05-02 18:51:22,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-05-02 18:51:22,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2021-05-02 18:51:22,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 49 states have internal predecessors, (55), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:22,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2021-05-02 18:51:22,557 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 49 [2021-05-02 18:51:22,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:22,557 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2021-05-02 18:51:22,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 22 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:22,557 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2021-05-02 18:51:22,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-02 18:51:22,558 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:22,558 INFO L523 BasicCegarLoop]: trace histogram [20, 16, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:22,761 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-05-02 18:51:22,761 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:22,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:22,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1205387721, now seen corresponding path program 13 times [2021-05-02 18:51:22,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:22,761 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135798917] [2021-05-02 18:51:22,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:22,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:22,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:22,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:22,942 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 119 proven. 272 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-02 18:51:22,942 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:22,942 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135798917] [2021-05-02 18:51:22,942 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135798917] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:22,942 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905728288] [2021-05-02 18:51:22,942 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:22,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-02 18:51:22,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:22,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:22,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:22,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:23,070 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 119 proven. 272 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-02 18:51:23,070 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905728288] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:23,070 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:23,070 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 21 [2021-05-02 18:51:23,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618223697] [2021-05-02 18:51:23,071 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-02 18:51:23,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:23,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-02 18:51:23,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2021-05-02 18:51:23,071 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 20 states have internal predecessors, (49), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:23,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:23,595 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2021-05-02 18:51:23,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-02 18:51:23,595 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 20 states have internal predecessors, (49), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2021-05-02 18:51:23,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:23,596 INFO L225 Difference]: With dead ends: 56 [2021-05-02 18:51:23,596 INFO L226 Difference]: Without dead ends: 56 [2021-05-02 18:51:23,596 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 553.7ms TimeCoverageRelationStatistics Valid=533, Invalid=873, Unknown=0, NotChecked=0, Total=1406 [2021-05-02 18:51:23,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-05-02 18:51:23,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-05-02 18:51:23,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 51 states have internal predecessors, (57), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:23,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2021-05-02 18:51:23,598 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 53 [2021-05-02 18:51:23,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:23,598 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2021-05-02 18:51:23,599 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 20 states have internal predecessors, (49), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:23,599 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2021-05-02 18:51:23,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-02 18:51:23,599 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:23,599 INFO L523 BasicCegarLoop]: trace histogram [21, 17, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:23,806 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:23,807 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:23,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:23,807 INFO L82 PathProgramCache]: Analyzing trace with hash 698210195, now seen corresponding path program 14 times [2021-05-02 18:51:23,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:23,807 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804955409] [2021-05-02 18:51:23,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:23,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:23,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:23,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:24,002 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 126 proven. 306 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-02 18:51:24,002 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:24,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804955409] [2021-05-02 18:51:24,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804955409] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:24,003 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064753079] [2021-05-02 18:51:24,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:24,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:51:24,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:24,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 18:51:24,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:24,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:24,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:24,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:24,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:24,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:24,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:24,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:24,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:24,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:24,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:24,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:24,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:24,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:24,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:24,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:24,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:24,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:24,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:24,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:24,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:24,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:24,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:24,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:24,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:24,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:24,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:24,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:24,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:24,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:24,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:24,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:24,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:24,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:24,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:24,147 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 126 proven. 306 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-02 18:51:24,147 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064753079] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:24,147 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:24,147 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 22 [2021-05-02 18:51:24,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833797315] [2021-05-02 18:51:24,147 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-02 18:51:24,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:24,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-02 18:51:24,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2021-05-02 18:51:24,148 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 21 states have internal predecessors, (51), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:24,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:24,669 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2021-05-02 18:51:24,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-02 18:51:24,670 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 21 states have internal predecessors, (51), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2021-05-02 18:51:24,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:24,670 INFO L225 Difference]: With dead ends: 58 [2021-05-02 18:51:24,670 INFO L226 Difference]: Without dead ends: 58 [2021-05-02 18:51:24,671 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 608.2ms TimeCoverageRelationStatistics Valid=591, Invalid=969, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 18:51:24,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-05-02 18:51:24,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-05-02 18:51:24,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 1.1132075471698113) internal successors, (59), 53 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:24,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2021-05-02 18:51:24,673 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 55 [2021-05-02 18:51:24,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:24,673 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2021-05-02 18:51:24,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 21 states have internal predecessors, (51), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:24,673 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2021-05-02 18:51:24,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-02 18:51:24,674 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:24,674 INFO L523 BasicCegarLoop]: trace histogram [22, 18, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:24,890 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:24,890 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:24,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:24,890 INFO L82 PathProgramCache]: Analyzing trace with hash 399739375, now seen corresponding path program 15 times [2021-05-02 18:51:24,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:24,891 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052353989] [2021-05-02 18:51:24,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:25,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:25,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:25,097 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 133 proven. 342 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-02 18:51:25,097 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:25,098 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052353989] [2021-05-02 18:51:25,098 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052353989] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:25,098 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411541956] [2021-05-02 18:51:25,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:25,134 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-05-02 18:51:25,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:25,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 18:51:25,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:25,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:25,325 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 162 proven. 16 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2021-05-02 18:51:25,325 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411541956] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:25,325 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:25,325 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 7] total 27 [2021-05-02 18:51:25,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637033936] [2021-05-02 18:51:25,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-02 18:51:25,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:25,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-02 18:51:25,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2021-05-02 18:51:25,326 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 26 states have internal predecessors, (63), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:26,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:26,182 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2021-05-02 18:51:26,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-02 18:51:26,183 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 26 states have internal predecessors, (63), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2021-05-02 18:51:26,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:26,183 INFO L225 Difference]: With dead ends: 63 [2021-05-02 18:51:26,183 INFO L226 Difference]: Without dead ends: 63 [2021-05-02 18:51:26,184 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 948.2ms TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2021-05-02 18:51:26,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-05-02 18:51:26,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2021-05-02 18:51:26,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 57 states have (on average 1.1228070175438596) internal successors, (64), 57 states have internal predecessors, (64), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:26,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2021-05-02 18:51:26,188 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 57 [2021-05-02 18:51:26,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:26,188 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2021-05-02 18:51:26,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 26 states have internal predecessors, (63), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:26,188 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2021-05-02 18:51:26,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-02 18:51:26,189 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:26,189 INFO L523 BasicCegarLoop]: trace histogram [24, 19, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:26,389 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:26,390 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:26,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:26,390 INFO L82 PathProgramCache]: Analyzing trace with hash -837478522, now seen corresponding path program 16 times [2021-05-02 18:51:26,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:26,390 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168575518] [2021-05-02 18:51:26,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:26,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:26,597 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 180 proven. 380 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-05-02 18:51:26,597 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:26,597 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168575518] [2021-05-02 18:51:26,597 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168575518] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:26,597 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878739858] [2021-05-02 18:51:26,597 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:26,638 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:51:26,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:26,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 18:51:26,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:26,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:26,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:26,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:26,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:26,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:26,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:26,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:26,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:26,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:26,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:26,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:26,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:26,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:26,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:26,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:26,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:26,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:26,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:26,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:26,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:26,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:26,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:26,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:26,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:26,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:26,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:26,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:26,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:26,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:26,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:26,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:26,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:26,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:26,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:26,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:26,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:26,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:26,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:26,743 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 180 proven. 380 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-05-02 18:51:26,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878739858] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:26,744 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:26,744 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 24 [2021-05-02 18:51:26,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516132504] [2021-05-02 18:51:26,745 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-02 18:51:26,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:26,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-02 18:51:26,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2021-05-02 18:51:26,746 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand has 24 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 23 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:27,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:27,389 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2021-05-02 18:51:27,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-02 18:51:27,390 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 23 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2021-05-02 18:51:27,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:27,390 INFO L225 Difference]: With dead ends: 64 [2021-05-02 18:51:27,390 INFO L226 Difference]: Without dead ends: 64 [2021-05-02 18:51:27,391 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 688.8ms TimeCoverageRelationStatistics Valid=716, Invalid=1176, Unknown=0, NotChecked=0, Total=1892 [2021-05-02 18:51:27,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-05-02 18:51:27,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-05-02 18:51:27,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 59 states have (on average 1.11864406779661) internal successors, (66), 59 states have internal predecessors, (66), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:27,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2021-05-02 18:51:27,394 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 61 [2021-05-02 18:51:27,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:27,394 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2021-05-02 18:51:27,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 23 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:27,394 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2021-05-02 18:51:27,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-05-02 18:51:27,394 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:27,394 INFO L523 BasicCegarLoop]: trace histogram [25, 20, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:27,595 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-05-02 18:51:27,595 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:27,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:27,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1736796958, now seen corresponding path program 17 times [2021-05-02 18:51:27,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:27,596 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636094763] [2021-05-02 18:51:27,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:27,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:27,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:27,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:27,813 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 189 proven. 420 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-05-02 18:51:27,813 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:27,813 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636094763] [2021-05-02 18:51:27,813 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636094763] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:27,813 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871805447] [2021-05-02 18:51:27,813 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:27,873 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2021-05-02 18:51:27,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:27,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-02 18:51:27,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:27,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:27,981 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 189 proven. 420 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-05-02 18:51:27,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871805447] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:27,982 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:27,982 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 25 [2021-05-02 18:51:27,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815373096] [2021-05-02 18:51:27,982 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-02 18:51:27,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:27,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-02 18:51:27,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2021-05-02 18:51:27,983 INFO L87 Difference]: Start difference. First operand 64 states and 70 transitions. Second operand has 25 states, 25 states have (on average 2.28) internal successors, (57), 24 states have internal predecessors, (57), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:28,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:28,637 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2021-05-02 18:51:28,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-02 18:51:28,638 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.28) internal successors, (57), 24 states have internal predecessors, (57), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2021-05-02 18:51:28,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:28,639 INFO L225 Difference]: With dead ends: 66 [2021-05-02 18:51:28,639 INFO L226 Difference]: Without dead ends: 66 [2021-05-02 18:51:28,639 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 720.0ms TimeCoverageRelationStatistics Valid=783, Invalid=1287, Unknown=0, NotChecked=0, Total=2070 [2021-05-02 18:51:28,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-05-02 18:51:28,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-05-02 18:51:28,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 61 states have (on average 1.1147540983606556) internal successors, (68), 61 states have internal predecessors, (68), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:28,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2021-05-02 18:51:28,642 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 63 [2021-05-02 18:51:28,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:28,642 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2021-05-02 18:51:28,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.28) internal successors, (57), 24 states have internal predecessors, (57), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:28,642 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2021-05-02 18:51:28,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-05-02 18:51:28,643 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:28,643 INFO L523 BasicCegarLoop]: trace histogram [26, 21, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:28,849 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-05-02 18:51:28,849 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:28,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:28,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1601579838, now seen corresponding path program 18 times [2021-05-02 18:51:28,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:28,849 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868462064] [2021-05-02 18:51:28,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:28,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:29,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:29,097 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 198 proven. 462 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-05-02 18:51:29,098 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:29,098 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868462064] [2021-05-02 18:51:29,098 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868462064] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:29,098 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013304500] [2021-05-02 18:51:29,098 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:29,167 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2021-05-02 18:51:29,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:29,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-02 18:51:29,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:29,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:29,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:29,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:29,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:29,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:29,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:29,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:29,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:29,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:29,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:29,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:29,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:29,378 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 231 proven. 25 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2021-05-02 18:51:29,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013304500] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:29,379 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:29,379 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 8] total 31 [2021-05-02 18:51:29,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484240434] [2021-05-02 18:51:29,379 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-02 18:51:29,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:29,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-02 18:51:29,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2021-05-02 18:51:29,380 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand has 31 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 30 states have internal predecessors, (71), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:30,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:30,298 INFO L93 Difference]: Finished difference Result 71 states and 79 transitions. [2021-05-02 18:51:30,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-02 18:51:30,298 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 30 states have internal predecessors, (71), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2021-05-02 18:51:30,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:30,299 INFO L225 Difference]: With dead ends: 71 [2021-05-02 18:51:30,299 INFO L226 Difference]: Without dead ends: 71 [2021-05-02 18:51:30,300 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 1110.5ms TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2021-05-02 18:51:30,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-05-02 18:51:30,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2021-05-02 18:51:30,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 65 states have (on average 1.123076923076923) internal successors, (73), 65 states have internal predecessors, (73), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:30,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2021-05-02 18:51:30,301 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 65 [2021-05-02 18:51:30,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:30,302 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2021-05-02 18:51:30,302 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 30 states have internal predecessors, (71), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:30,302 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2021-05-02 18:51:30,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-02 18:51:30,302 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:30,302 INFO L523 BasicCegarLoop]: trace histogram [28, 22, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:30,513 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-05-02 18:51:30,513 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:30,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:30,513 INFO L82 PathProgramCache]: Analyzing trace with hash 852002069, now seen corresponding path program 19 times [2021-05-02 18:51:30,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:30,513 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604631603] [2021-05-02 18:51:30,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:30,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:30,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:30,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:30,741 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 253 proven. 506 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-05-02 18:51:30,741 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:30,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604631603] [2021-05-02 18:51:30,742 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604631603] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:30,742 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632390029] [2021-05-02 18:51:30,742 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:30,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:30,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 24 conjunts are in the unsatisfiable core [2021-05-02 18:51:30,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:30,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:30,899 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 253 proven. 506 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-05-02 18:51:30,899 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632390029] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:30,899 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:30,899 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 27 [2021-05-02 18:51:30,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475172990] [2021-05-02 18:51:30,899 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-02 18:51:30,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:30,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-02 18:51:30,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2021-05-02 18:51:30,900 INFO L87 Difference]: Start difference. First operand 70 states and 77 transitions. Second operand has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 26 states have internal predecessors, (61), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:31,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:31,602 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2021-05-02 18:51:31,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-02 18:51:31,602 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 26 states have internal predecessors, (61), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-05-02 18:51:31,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:31,603 INFO L225 Difference]: With dead ends: 72 [2021-05-02 18:51:31,603 INFO L226 Difference]: Without dead ends: 72 [2021-05-02 18:51:31,603 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 776.9ms TimeCoverageRelationStatistics Valid=926, Invalid=1524, Unknown=0, NotChecked=0, Total=2450 [2021-05-02 18:51:31,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-05-02 18:51:31,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-05-02 18:51:31,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 67 states have (on average 1.1194029850746268) internal successors, (75), 67 states have internal predecessors, (75), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:31,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2021-05-02 18:51:31,605 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 69 [2021-05-02 18:51:31,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:31,605 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2021-05-02 18:51:31,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 26 states have internal predecessors, (61), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:31,606 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2021-05-02 18:51:31,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-05-02 18:51:31,606 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:31,606 INFO L523 BasicCegarLoop]: trace histogram [29, 23, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:31,821 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-05-02 18:51:31,821 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:31,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:31,821 INFO L82 PathProgramCache]: Analyzing trace with hash 2063132273, now seen corresponding path program 20 times [2021-05-02 18:51:31,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:31,821 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834700218] [2021-05-02 18:51:31,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:31,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:32,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:32,114 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 264 proven. 552 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-05-02 18:51:32,114 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:32,114 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834700218] [2021-05-02 18:51:32,115 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834700218] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:32,115 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348166513] [2021-05-02 18:51:32,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:32,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:51:32,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:32,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-02 18:51:32,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:32,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:32,273 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 264 proven. 552 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-05-02 18:51:32,273 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348166513] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:32,273 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:32,273 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 28 [2021-05-02 18:51:32,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421120049] [2021-05-02 18:51:32,274 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-02 18:51:32,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:32,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-02 18:51:32,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2021-05-02 18:51:32,274 INFO L87 Difference]: Start difference. First operand 72 states and 79 transitions. Second operand has 28 states, 28 states have (on average 2.25) internal successors, (63), 27 states have internal predecessors, (63), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:33,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:33,026 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2021-05-02 18:51:33,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-02 18:51:33,027 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.25) internal successors, (63), 27 states have internal predecessors, (63), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2021-05-02 18:51:33,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:33,027 INFO L225 Difference]: With dead ends: 74 [2021-05-02 18:51:33,027 INFO L226 Difference]: Without dead ends: 74 [2021-05-02 18:51:33,028 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 852.1ms TimeCoverageRelationStatistics Valid=1002, Invalid=1650, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 18:51:33,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-05-02 18:51:33,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-05-02 18:51:33,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 69 states have (on average 1.1159420289855073) internal successors, (77), 69 states have internal predecessors, (77), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:33,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2021-05-02 18:51:33,030 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 71 [2021-05-02 18:51:33,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:33,030 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2021-05-02 18:51:33,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 2.25) internal successors, (63), 27 states have internal predecessors, (63), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:33,030 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2021-05-02 18:51:33,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-05-02 18:51:33,030 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:33,030 INFO L523 BasicCegarLoop]: trace histogram [30, 24, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:33,236 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-05-02 18:51:33,237 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:33,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:33,237 INFO L82 PathProgramCache]: Analyzing trace with hash 2023121101, now seen corresponding path program 21 times [2021-05-02 18:51:33,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:33,237 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98612974] [2021-05-02 18:51:33,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:33,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:33,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:33,590 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 275 proven. 600 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-05-02 18:51:33,590 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:33,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98612974] [2021-05-02 18:51:33,590 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98612974] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:33,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819895769] [2021-05-02 18:51:33,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:33,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-05-02 18:51:33,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:33,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 18:51:33,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:33,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:33,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:33,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:33,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:33,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:33,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:33,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:33,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:33,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:33,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:33,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:33,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:33,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:33,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:33,962 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 312 proven. 36 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2021-05-02 18:51:33,962 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819895769] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:33,962 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:33,963 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 9] total 35 [2021-05-02 18:51:33,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447024474] [2021-05-02 18:51:33,963 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-05-02 18:51:33,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:33,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-05-02 18:51:33,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2021-05-02 18:51:33,964 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand has 35 states, 35 states have (on average 2.257142857142857) internal successors, (79), 34 states have internal predecessors, (79), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:35,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:35,071 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2021-05-02 18:51:35,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-02 18:51:35,071 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.257142857142857) internal successors, (79), 34 states have internal predecessors, (79), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2021-05-02 18:51:35,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:35,072 INFO L225 Difference]: With dead ends: 79 [2021-05-02 18:51:35,072 INFO L226 Difference]: Without dead ends: 79 [2021-05-02 18:51:35,073 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 1446.5ms TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422 [2021-05-02 18:51:35,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-05-02 18:51:35,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2021-05-02 18:51:35,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 73 states have (on average 1.1232876712328768) internal successors, (82), 73 states have internal predecessors, (82), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:35,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2021-05-02 18:51:35,075 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 73 [2021-05-02 18:51:35,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:35,075 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2021-05-02 18:51:35,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.257142857142857) internal successors, (79), 34 states have internal predecessors, (79), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:35,075 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2021-05-02 18:51:35,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-05-02 18:51:35,076 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:35,076 INFO L523 BasicCegarLoop]: trace histogram [32, 25, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:35,291 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:35,292 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:35,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:35,292 INFO L82 PathProgramCache]: Analyzing trace with hash 264337124, now seen corresponding path program 22 times [2021-05-02 18:51:35,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:35,292 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209055527] [2021-05-02 18:51:35,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:35,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:35,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:35,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:35,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1025 backedges. 338 proven. 650 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-05-02 18:51:35,635 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:35,635 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209055527] [2021-05-02 18:51:35,635 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209055527] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:35,635 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572250365] [2021-05-02 18:51:35,635 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:35,683 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:51:35,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:35,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 27 conjunts are in the unsatisfiable core [2021-05-02 18:51:35,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:35,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:35,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1025 backedges. 338 proven. 650 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-05-02 18:51:35,818 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572250365] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:35,818 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:35,818 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28] total 30 [2021-05-02 18:51:35,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179686677] [2021-05-02 18:51:35,818 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-02 18:51:35,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:35,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-02 18:51:35,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2021-05-02 18:51:35,819 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand has 30 states, 30 states have (on average 2.2333333333333334) internal successors, (67), 29 states have internal predecessors, (67), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:36,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:36,659 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2021-05-02 18:51:36,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-02 18:51:36,659 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.2333333333333334) internal successors, (67), 29 states have internal predecessors, (67), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 77 [2021-05-02 18:51:36,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:36,660 INFO L225 Difference]: With dead ends: 80 [2021-05-02 18:51:36,660 INFO L226 Difference]: Without dead ends: 80 [2021-05-02 18:51:36,660 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 998.1ms TimeCoverageRelationStatistics Valid=1163, Invalid=1917, Unknown=0, NotChecked=0, Total=3080 [2021-05-02 18:51:36,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-05-02 18:51:36,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-05-02 18:51:36,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 75 states have (on average 1.12) internal successors, (84), 75 states have internal predecessors, (84), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:36,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2021-05-02 18:51:36,662 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 77 [2021-05-02 18:51:36,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:36,662 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2021-05-02 18:51:36,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 2.2333333333333334) internal successors, (67), 29 states have internal predecessors, (67), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:36,662 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2021-05-02 18:51:36,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-05-02 18:51:36,663 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:36,663 INFO L523 BasicCegarLoop]: trace histogram [33, 26, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:36,872 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-05-02 18:51:36,873 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:36,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:36,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1587067968, now seen corresponding path program 23 times [2021-05-02 18:51:36,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:36,873 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101549084] [2021-05-02 18:51:36,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:36,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:37,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:37,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:37,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 351 proven. 702 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-05-02 18:51:37,190 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:37,190 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101549084] [2021-05-02 18:51:37,190 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101549084] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:37,190 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343585752] [2021-05-02 18:51:37,190 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:37,246 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2021-05-02 18:51:37,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:37,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-02 18:51:37,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:37,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:37,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 351 proven. 702 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-05-02 18:51:37,387 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343585752] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:37,387 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:37,387 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29] total 31 [2021-05-02 18:51:37,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795634514] [2021-05-02 18:51:37,387 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-02 18:51:37,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:37,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-02 18:51:37,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2021-05-02 18:51:37,388 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand has 31 states, 31 states have (on average 2.225806451612903) internal successors, (69), 30 states have internal predecessors, (69), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:38,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:38,273 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2021-05-02 18:51:38,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-02 18:51:38,274 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.225806451612903) internal successors, (69), 30 states have internal predecessors, (69), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 79 [2021-05-02 18:51:38,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:38,274 INFO L225 Difference]: With dead ends: 82 [2021-05-02 18:51:38,274 INFO L226 Difference]: Without dead ends: 82 [2021-05-02 18:51:38,275 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 1024.6ms TimeCoverageRelationStatistics Valid=1248, Invalid=2058, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 18:51:38,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-05-02 18:51:38,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-05-02 18:51:38,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 77 states have (on average 1.1168831168831168) internal successors, (86), 77 states have internal predecessors, (86), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:38,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2021-05-02 18:51:38,276 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 79 [2021-05-02 18:51:38,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:38,276 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2021-05-02 18:51:38,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 2.225806451612903) internal successors, (69), 30 states have internal predecessors, (69), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:38,277 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2021-05-02 18:51:38,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-05-02 18:51:38,277 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:38,277 INFO L523 BasicCegarLoop]: trace histogram [34, 27, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:38,491 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:38,492 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:38,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:38,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1421089436, now seen corresponding path program 24 times [2021-05-02 18:51:38,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:38,492 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436121070] [2021-05-02 18:51:38,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:38,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:38,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:38,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:38,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 364 proven. 756 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-05-02 18:51:38,849 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:38,849 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436121070] [2021-05-02 18:51:38,849 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436121070] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:38,849 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868546752] [2021-05-02 18:51:38,849 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:38,937 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-05-02 18:51:38,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:38,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-02 18:51:38,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:39,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:39,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:39,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:39,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:39,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:39,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:39,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:39,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:39,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:39,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:39,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:39,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:39,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:39,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:39,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:39,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:39,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 405 proven. 49 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2021-05-02 18:51:39,244 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868546752] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:39,244 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:39,244 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 10] total 39 [2021-05-02 18:51:39,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217605041] [2021-05-02 18:51:39,244 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-02 18:51:39,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:39,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-02 18:51:39,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2021-05-02 18:51:39,245 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand has 39 states, 39 states have (on average 2.230769230769231) internal successors, (87), 38 states have internal predecessors, (87), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:40,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:40,526 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2021-05-02 18:51:40,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-02 18:51:40,527 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.230769230769231) internal successors, (87), 38 states have internal predecessors, (87), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2021-05-02 18:51:40,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:40,527 INFO L225 Difference]: With dead ends: 87 [2021-05-02 18:51:40,527 INFO L226 Difference]: Without dead ends: 87 [2021-05-02 18:51:40,528 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 1651.4ms TimeCoverageRelationStatistics Valid=2109, Invalid=3441, Unknown=0, NotChecked=0, Total=5550 [2021-05-02 18:51:40,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-05-02 18:51:40,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2021-05-02 18:51:40,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 81 states have (on average 1.123456790123457) internal successors, (91), 81 states have internal predecessors, (91), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:40,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2021-05-02 18:51:40,530 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 81 [2021-05-02 18:51:40,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:40,530 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2021-05-02 18:51:40,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 2.230769230769231) internal successors, (87), 38 states have internal predecessors, (87), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:40,530 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2021-05-02 18:51:40,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-05-02 18:51:40,530 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:40,530 INFO L523 BasicCegarLoop]: trace histogram [36, 28, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:40,744 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-05-02 18:51:40,745 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:40,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:40,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1514396915, now seen corresponding path program 25 times [2021-05-02 18:51:40,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:40,745 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527917835] [2021-05-02 18:51:40,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:40,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:41,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:41,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1297 backedges. 435 proven. 812 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-05-02 18:51:41,117 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:41,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527917835] [2021-05-02 18:51:41,117 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527917835] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:41,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722293038] [2021-05-02 18:51:41,118 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:41,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 30 conjunts are in the unsatisfiable core [2021-05-02 18:51:41,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:41,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:41,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1297 backedges. 435 proven. 812 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-05-02 18:51:41,319 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722293038] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:41,319 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:41,319 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31] total 33 [2021-05-02 18:51:41,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107520096] [2021-05-02 18:51:41,320 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-02 18:51:41,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:41,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-02 18:51:41,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2021-05-02 18:51:41,320 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand has 33 states, 33 states have (on average 2.212121212121212) internal successors, (73), 32 states have internal predecessors, (73), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:42,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:42,302 INFO L93 Difference]: Finished difference Result 88 states and 97 transitions. [2021-05-02 18:51:42,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-02 18:51:42,302 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.212121212121212) internal successors, (73), 32 states have internal predecessors, (73), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2021-05-02 18:51:42,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:42,303 INFO L225 Difference]: With dead ends: 88 [2021-05-02 18:51:42,303 INFO L226 Difference]: Without dead ends: 88 [2021-05-02 18:51:42,304 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 1178.7ms TimeCoverageRelationStatistics Valid=1427, Invalid=2355, Unknown=0, NotChecked=0, Total=3782 [2021-05-02 18:51:42,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-05-02 18:51:42,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-05-02 18:51:42,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 83 states have (on average 1.1204819277108433) internal successors, (93), 83 states have internal predecessors, (93), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:42,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2021-05-02 18:51:42,305 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 85 [2021-05-02 18:51:42,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:42,306 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2021-05-02 18:51:42,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.212121212121212) internal successors, (73), 32 states have internal predecessors, (73), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:42,306 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2021-05-02 18:51:42,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-05-02 18:51:42,306 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:42,306 INFO L523 BasicCegarLoop]: trace histogram [37, 29, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:42,513 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:42,513 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:42,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:42,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1667365297, now seen corresponding path program 26 times [2021-05-02 18:51:42,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:42,513 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556535998] [2021-05-02 18:51:42,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:42,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:42,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:42,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 450 proven. 870 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-05-02 18:51:42,917 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:42,918 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556535998] [2021-05-02 18:51:42,918 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556535998] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:42,918 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427522910] [2021-05-02 18:51:42,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:42,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:51:42,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:42,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-02 18:51:42,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:42,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:42,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:42,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:42,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:42,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:42,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:42,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:42,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:43,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 450 proven. 870 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-05-02 18:51:43,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427522910] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:43,107 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:43,107 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32] total 34 [2021-05-02 18:51:43,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429825336] [2021-05-02 18:51:43,107 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-02 18:51:43,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:43,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-02 18:51:43,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 18:51:43,108 INFO L87 Difference]: Start difference. First operand 88 states and 97 transitions. Second operand has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 33 states have internal predecessors, (75), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:44,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:44,175 INFO L93 Difference]: Finished difference Result 90 states and 99 transitions. [2021-05-02 18:51:44,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-02 18:51:44,175 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 33 states have internal predecessors, (75), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 87 [2021-05-02 18:51:44,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:44,176 INFO L225 Difference]: With dead ends: 90 [2021-05-02 18:51:44,176 INFO L226 Difference]: Without dead ends: 90 [2021-05-02 18:51:44,177 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 1268.4ms TimeCoverageRelationStatistics Valid=1521, Invalid=2511, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 18:51:44,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-05-02 18:51:44,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2021-05-02 18:51:44,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 85 states have (on average 1.1176470588235294) internal successors, (95), 85 states have internal predecessors, (95), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:44,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2021-05-02 18:51:44,178 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 87 [2021-05-02 18:51:44,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:44,178 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2021-05-02 18:51:44,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 33 states have internal predecessors, (75), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:44,178 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2021-05-02 18:51:44,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-05-02 18:51:44,179 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:44,179 INFO L523 BasicCegarLoop]: trace histogram [38, 30, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:44,392 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-05-02 18:51:44,393 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:44,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:44,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1324136277, now seen corresponding path program 27 times [2021-05-02 18:51:44,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:44,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926725662] [2021-05-02 18:51:44,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:44,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:44,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:44,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:44,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 465 proven. 930 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-05-02 18:51:44,822 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:44,822 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926725662] [2021-05-02 18:51:44,823 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926725662] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:44,823 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360052492] [2021-05-02 18:51:44,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:44,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-05-02 18:51:44,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:44,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-02 18:51:44,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:44,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:44,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:45,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:45,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:45,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:45,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:45,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:45,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:45,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:45,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:45,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:45,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:45,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:45,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:45,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:45,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:45,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 510 proven. 64 refuted. 0 times theorem prover too weak. 871 trivial. 0 not checked. [2021-05-02 18:51:45,267 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360052492] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:45,267 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:45,267 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 11] total 43 [2021-05-02 18:51:45,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528475226] [2021-05-02 18:51:45,268 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-02 18:51:45,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:45,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-02 18:51:45,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2021-05-02 18:51:45,269 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand has 43 states, 43 states have (on average 2.2093023255813953) internal successors, (95), 42 states have internal predecessors, (95), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:46,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:46,785 INFO L93 Difference]: Finished difference Result 95 states and 106 transitions. [2021-05-02 18:51:46,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-02 18:51:46,785 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.2093023255813953) internal successors, (95), 42 states have internal predecessors, (95), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 89 [2021-05-02 18:51:46,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:46,786 INFO L225 Difference]: With dead ends: 95 [2021-05-02 18:51:46,786 INFO L226 Difference]: Without dead ends: 95 [2021-05-02 18:51:46,786 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 1996.1ms TimeCoverageRelationStatistics Valid=2583, Invalid=4223, Unknown=0, NotChecked=0, Total=6806 [2021-05-02 18:51:46,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-05-02 18:51:46,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2021-05-02 18:51:46,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 89 states have (on average 1.1235955056179776) internal successors, (100), 89 states have internal predecessors, (100), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:46,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2021-05-02 18:51:46,788 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 89 [2021-05-02 18:51:46,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:46,788 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2021-05-02 18:51:46,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 2.2093023255813953) internal successors, (95), 42 states have internal predecessors, (95), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:46,788 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2021-05-02 18:51:46,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-05-02 18:51:46,788 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:46,789 INFO L523 BasicCegarLoop]: trace histogram [40, 31, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:46,992 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:46,993 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:46,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:46,993 INFO L82 PathProgramCache]: Analyzing trace with hash -229136574, now seen corresponding path program 28 times [2021-05-02 18:51:46,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:46,993 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032649575] [2021-05-02 18:51:46,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:47,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:47,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1601 backedges. 544 proven. 992 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-05-02 18:51:47,430 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:47,430 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032649575] [2021-05-02 18:51:47,430 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032649575] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:47,431 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126563912] [2021-05-02 18:51:47,431 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:47,500 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:51:47,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:47,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-02 18:51:47,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:47,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:47,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1601 backedges. 544 proven. 992 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-05-02 18:51:47,636 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126563912] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:47,636 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:47,636 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34] total 36 [2021-05-02 18:51:47,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090845111] [2021-05-02 18:51:47,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-02 18:51:47,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:47,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-02 18:51:47,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 18:51:47,637 INFO L87 Difference]: Start difference. First operand 94 states and 104 transitions. Second operand has 36 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 35 states have internal predecessors, (79), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:48,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:48,669 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2021-05-02 18:51:48,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-02 18:51:48,669 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 35 states have internal predecessors, (79), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 93 [2021-05-02 18:51:48,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:48,670 INFO L225 Difference]: With dead ends: 96 [2021-05-02 18:51:48,670 INFO L226 Difference]: Without dead ends: 96 [2021-05-02 18:51:48,670 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 1326.6ms TimeCoverageRelationStatistics Valid=1718, Invalid=2838, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 18:51:48,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-05-02 18:51:48,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-05-02 18:51:48,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 91 states have (on average 1.120879120879121) internal successors, (102), 91 states have internal predecessors, (102), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:48,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 106 transitions. [2021-05-02 18:51:48,672 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 106 transitions. Word has length 93 [2021-05-02 18:51:48,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:48,672 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 106 transitions. [2021-05-02 18:51:48,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 35 states have internal predecessors, (79), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:48,673 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 106 transitions. [2021-05-02 18:51:48,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-05-02 18:51:48,673 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:48,674 INFO L523 BasicCegarLoop]: trace histogram [41, 32, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:48,880 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-05-02 18:51:48,881 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:48,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:48,881 INFO L82 PathProgramCache]: Analyzing trace with hash 2031137950, now seen corresponding path program 29 times [2021-05-02 18:51:48,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:48,881 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514356886] [2021-05-02 18:51:48,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:48,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:49,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:49,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:49,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 561 proven. 1056 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-05-02 18:51:49,346 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:49,346 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514356886] [2021-05-02 18:51:49,346 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514356886] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:49,346 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440747040] [2021-05-02 18:51:49,346 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:49,404 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-05-02 18:51:49,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:49,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-02 18:51:49,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:49,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:49,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 561 proven. 1056 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-05-02 18:51:49,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440747040] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:49,570 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:49,570 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35] total 37 [2021-05-02 18:51:49,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732114780] [2021-05-02 18:51:49,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-05-02 18:51:49,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:49,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-05-02 18:51:49,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2021-05-02 18:51:49,571 INFO L87 Difference]: Start difference. First operand 96 states and 106 transitions. Second operand has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 36 states have internal predecessors, (81), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:50,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:50,786 INFO L93 Difference]: Finished difference Result 98 states and 108 transitions. [2021-05-02 18:51:50,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-02 18:51:50,786 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 36 states have internal predecessors, (81), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 95 [2021-05-02 18:51:50,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:50,786 INFO L225 Difference]: With dead ends: 98 [2021-05-02 18:51:50,787 INFO L226 Difference]: Without dead ends: 98 [2021-05-02 18:51:50,787 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 1454.1ms TimeCoverageRelationStatistics Valid=1821, Invalid=3009, Unknown=0, NotChecked=0, Total=4830 [2021-05-02 18:51:50,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-05-02 18:51:50,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-05-02 18:51:50,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 93 states have (on average 1.118279569892473) internal successors, (104), 93 states have internal predecessors, (104), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:50,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions. [2021-05-02 18:51:50,788 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 95 [2021-05-02 18:51:50,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:50,789 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions. [2021-05-02 18:51:50,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 36 states have internal predecessors, (81), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:50,789 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions. [2021-05-02 18:51:50,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-05-02 18:51:50,789 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:50,789 INFO L523 BasicCegarLoop]: trace histogram [42, 33, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:51,000 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:51,001 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:51,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:51,001 INFO L82 PathProgramCache]: Analyzing trace with hash 901503738, now seen corresponding path program 30 times [2021-05-02 18:51:51,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:51,001 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713485935] [2021-05-02 18:51:51,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:51,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:51,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:51,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1765 backedges. 578 proven. 1122 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-05-02 18:51:51,486 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:51,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713485935] [2021-05-02 18:51:51,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713485935] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:51,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527427504] [2021-05-02 18:51:51,486 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:51,607 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 39 check-sat command(s) [2021-05-02 18:51:51,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:51,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-02 18:51:51,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:51,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:51,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:51,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:51,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:51,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:51,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:51,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:51,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:51,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:51,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:51,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:51,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:51,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:51,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:51,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:51,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:51,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:51,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:52,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:52,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:52,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1765 backedges. 627 proven. 81 refuted. 0 times theorem prover too weak. 1057 trivial. 0 not checked. [2021-05-02 18:51:52,047 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527427504] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:52,047 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:52,047 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 12] total 47 [2021-05-02 18:51:52,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639454317] [2021-05-02 18:51:52,048 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-05-02 18:51:52,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:52,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-05-02 18:51:52,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2021-05-02 18:51:52,048 INFO L87 Difference]: Start difference. First operand 98 states and 108 transitions. Second operand has 47 states, 47 states have (on average 2.1914893617021276) internal successors, (103), 46 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:53,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:53,775 INFO L93 Difference]: Finished difference Result 103 states and 115 transitions. [2021-05-02 18:51:53,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-02 18:51:53,775 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.1914893617021276) internal successors, (103), 46 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 97 [2021-05-02 18:51:53,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:53,776 INFO L225 Difference]: With dead ends: 103 [2021-05-02 18:51:53,776 INFO L226 Difference]: Without dead ends: 103 [2021-05-02 18:51:53,776 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 979 ImplicationChecksByTransitivity, 2275.0ms TimeCoverageRelationStatistics Valid=3105, Invalid=5085, Unknown=0, NotChecked=0, Total=8190 [2021-05-02 18:51:53,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-05-02 18:51:53,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2021-05-02 18:51:53,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 97 states have (on average 1.1237113402061856) internal successors, (109), 97 states have internal predecessors, (109), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:53,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 113 transitions. [2021-05-02 18:51:53,778 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 113 transitions. Word has length 97 [2021-05-02 18:51:53,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:53,778 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 113 transitions. [2021-05-02 18:51:53,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 47 states, 47 states have (on average 2.1914893617021276) internal successors, (103), 46 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:53,778 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 113 transitions. [2021-05-02 18:51:53,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-05-02 18:51:53,779 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:53,779 INFO L523 BasicCegarLoop]: trace histogram [44, 34, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:53,987 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-05-02 18:51:53,988 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:53,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:53,988 INFO L82 PathProgramCache]: Analyzing trace with hash 29935057, now seen corresponding path program 31 times [2021-05-02 18:51:53,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:53,988 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545221338] [2021-05-02 18:51:53,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:54,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:54,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:54,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1937 backedges. 665 proven. 1190 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-05-02 18:51:54,510 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:54,510 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545221338] [2021-05-02 18:51:54,510 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545221338] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:54,510 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568013928] [2021-05-02 18:51:54,510 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:54,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:54,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 36 conjunts are in the unsatisfiable core [2021-05-02 18:51:54,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:54,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:54,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1937 backedges. 665 proven. 1190 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-05-02 18:51:54,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568013928] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:54,717 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:54,717 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37] total 39 [2021-05-02 18:51:54,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050546603] [2021-05-02 18:51:54,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-02 18:51:54,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:54,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-02 18:51:54,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2021-05-02 18:51:54,718 INFO L87 Difference]: Start difference. First operand 102 states and 113 transitions. Second operand has 39 states, 39 states have (on average 2.1794871794871793) internal successors, (85), 38 states have internal predecessors, (85), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:55,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:55,919 INFO L93 Difference]: Finished difference Result 104 states and 115 transitions. [2021-05-02 18:51:55,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-02 18:51:55,919 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.1794871794871793) internal successors, (85), 38 states have internal predecessors, (85), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 101 [2021-05-02 18:51:55,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:55,919 INFO L225 Difference]: With dead ends: 104 [2021-05-02 18:51:55,920 INFO L226 Difference]: Without dead ends: 104 [2021-05-02 18:51:55,920 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 1569.8ms TimeCoverageRelationStatistics Valid=2036, Invalid=3366, Unknown=0, NotChecked=0, Total=5402 [2021-05-02 18:51:55,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-05-02 18:51:55,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2021-05-02 18:51:55,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 99 states have (on average 1.121212121212121) internal successors, (111), 99 states have internal predecessors, (111), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:55,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 115 transitions. [2021-05-02 18:51:55,922 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 115 transitions. Word has length 101 [2021-05-02 18:51:55,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:55,922 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 115 transitions. [2021-05-02 18:51:55,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 2.1794871794871793) internal successors, (85), 38 states have internal predecessors, (85), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:55,922 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 115 transitions. [2021-05-02 18:51:55,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-05-02 18:51:55,922 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:55,922 INFO L523 BasicCegarLoop]: trace histogram [45, 35, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:56,125 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-05-02 18:51:56,126 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:56,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:56,126 INFO L82 PathProgramCache]: Analyzing trace with hash -2118338771, now seen corresponding path program 32 times [2021-05-02 18:51:56,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:56,127 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946787151] [2021-05-02 18:51:56,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:56,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:56,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:56,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 684 proven. 1260 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-05-02 18:51:56,667 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:56,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946787151] [2021-05-02 18:51:56,667 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946787151] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:56,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019089123] [2021-05-02 18:51:56,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:56,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:51:56,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:56,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-02 18:51:56,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:56,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:56,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 684 proven. 1260 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-05-02 18:51:56,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019089123] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:56,889 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:56,889 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38] total 40 [2021-05-02 18:51:56,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268733175] [2021-05-02 18:51:56,890 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-02 18:51:56,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:56,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-02 18:51:56,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 18:51:56,890 INFO L87 Difference]: Start difference. First operand 104 states and 115 transitions. Second operand has 40 states, 40 states have (on average 2.175) internal successors, (87), 39 states have internal predecessors, (87), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:58,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:58,247 INFO L93 Difference]: Finished difference Result 106 states and 117 transitions. [2021-05-02 18:51:58,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-02 18:51:58,248 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.175) internal successors, (87), 39 states have internal predecessors, (87), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2021-05-02 18:51:58,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:58,248 INFO L225 Difference]: With dead ends: 106 [2021-05-02 18:51:58,248 INFO L226 Difference]: Without dead ends: 106 [2021-05-02 18:51:58,249 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 1661.8ms TimeCoverageRelationStatistics Valid=2148, Invalid=3552, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 18:51:58,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-05-02 18:51:58,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-05-02 18:51:58,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 101 states have (on average 1.118811881188119) internal successors, (113), 101 states have internal predecessors, (113), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:58,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 117 transitions. [2021-05-02 18:51:58,250 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 117 transitions. Word has length 103 [2021-05-02 18:51:58,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:58,251 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 117 transitions. [2021-05-02 18:51:58,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 2.175) internal successors, (87), 39 states have internal predecessors, (87), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:51:58,251 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 117 transitions. [2021-05-02 18:51:58,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-05-02 18:51:58,255 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:58,255 INFO L523 BasicCegarLoop]: trace histogram [46, 36, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:58,456 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-05-02 18:51:58,456 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:58,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:58,456 INFO L82 PathProgramCache]: Analyzing trace with hash -730218103, now seen corresponding path program 33 times [2021-05-02 18:51:58,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:58,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065466151] [2021-05-02 18:51:58,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:59,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:59,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:59,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2117 backedges. 703 proven. 1332 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-05-02 18:51:59,039 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:59,039 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065466151] [2021-05-02 18:51:59,039 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065466151] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:59,039 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454720079] [2021-05-02 18:51:59,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:59,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-05-02 18:51:59,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:59,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-02 18:51:59,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:59,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:59,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:59,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:59,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:59,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:59,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:59,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:59,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:59,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:59,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:59,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:59,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:59,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:59,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:59,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:59,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:59,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:59,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:59,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:59,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:59,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:59,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:59,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2117 backedges. 756 proven. 100 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked. [2021-05-02 18:51:59,560 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454720079] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:59,560 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:59,561 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 13] total 51 [2021-05-02 18:51:59,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629998763] [2021-05-02 18:51:59,561 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-05-02 18:51:59,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:59,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-05-02 18:51:59,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2021-05-02 18:51:59,562 INFO L87 Difference]: Start difference. First operand 106 states and 117 transitions. Second operand has 51 states, 51 states have (on average 2.176470588235294) internal successors, (111), 50 states have internal predecessors, (111), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:01,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:01,522 INFO L93 Difference]: Finished difference Result 111 states and 124 transitions. [2021-05-02 18:52:01,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-02 18:52:01,522 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.176470588235294) internal successors, (111), 50 states have internal predecessors, (111), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 105 [2021-05-02 18:52:01,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:01,523 INFO L225 Difference]: With dead ends: 111 [2021-05-02 18:52:01,523 INFO L226 Difference]: Without dead ends: 111 [2021-05-02 18:52:01,523 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1164 ImplicationChecksByTransitivity, 2617.8ms TimeCoverageRelationStatistics Valid=3675, Invalid=6027, Unknown=0, NotChecked=0, Total=9702 [2021-05-02 18:52:01,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-05-02 18:52:01,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 110. [2021-05-02 18:52:01,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 105 states have (on average 1.1238095238095238) internal successors, (118), 105 states have internal predecessors, (118), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:01,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 122 transitions. [2021-05-02 18:52:01,525 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 122 transitions. Word has length 105 [2021-05-02 18:52:01,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:01,525 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 122 transitions. [2021-05-02 18:52:01,525 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 51 states, 51 states have (on average 2.176470588235294) internal successors, (111), 50 states have internal predecessors, (111), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:01,525 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 122 transitions. [2021-05-02 18:52:01,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-05-02 18:52:01,525 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:01,525 INFO L523 BasicCegarLoop]: trace histogram [48, 37, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:01,736 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-05-02 18:52:01,737 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:01,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:01,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1691932512, now seen corresponding path program 34 times [2021-05-02 18:52:01,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:01,738 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42182366] [2021-05-02 18:52:01,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:02,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:02,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:02,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2305 backedges. 798 proven. 1406 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-05-02 18:52:02,330 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:02,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42182366] [2021-05-02 18:52:02,330 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42182366] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:02,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820349553] [2021-05-02 18:52:02,330 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:02,393 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:52:02,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:02,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 39 conjunts are in the unsatisfiable core [2021-05-02 18:52:02,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:02,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2305 backedges. 798 proven. 1406 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-05-02 18:52:02,564 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820349553] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:02,564 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:02,564 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40] total 42 [2021-05-02 18:52:02,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840262636] [2021-05-02 18:52:02,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-05-02 18:52:02,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:02,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-05-02 18:52:02,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2021-05-02 18:52:02,565 INFO L87 Difference]: Start difference. First operand 110 states and 122 transitions. Second operand has 42 states, 42 states have (on average 2.1666666666666665) internal successors, (91), 41 states have internal predecessors, (91), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:04,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:04,006 INFO L93 Difference]: Finished difference Result 112 states and 124 transitions. [2021-05-02 18:52:04,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-02 18:52:04,006 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.1666666666666665) internal successors, (91), 41 states have internal predecessors, (91), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 109 [2021-05-02 18:52:04,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:04,007 INFO L225 Difference]: With dead ends: 112 [2021-05-02 18:52:04,007 INFO L226 Difference]: Without dead ends: 112 [2021-05-02 18:52:04,008 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 1792.8ms TimeCoverageRelationStatistics Valid=2381, Invalid=3939, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 18:52:04,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-05-02 18:52:04,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2021-05-02 18:52:04,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 107 states have (on average 1.1214953271028036) internal successors, (120), 107 states have internal predecessors, (120), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:04,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 124 transitions. [2021-05-02 18:52:04,009 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 124 transitions. Word has length 109 [2021-05-02 18:52:04,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:04,010 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 124 transitions. [2021-05-02 18:52:04,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 2.1666666666666665) internal successors, (91), 41 states have internal predecessors, (91), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:04,010 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 124 transitions. [2021-05-02 18:52:04,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-05-02 18:52:04,010 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:04,010 INFO L523 BasicCegarLoop]: trace histogram [49, 38, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:04,222 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-05-02 18:52:04,222 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:04,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:04,223 INFO L82 PathProgramCache]: Analyzing trace with hash 758251004, now seen corresponding path program 35 times [2021-05-02 18:52:04,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:04,223 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764098666] [2021-05-02 18:52:04,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:04,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:04,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:04,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:04,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2402 backedges. 819 proven. 1482 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-05-02 18:52:04,947 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:04,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764098666] [2021-05-02 18:52:04,947 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764098666] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:04,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819994295] [2021-05-02 18:52:04,947 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:05,013 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 50 check-sat command(s) [2021-05-02 18:52:05,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:05,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 40 conjunts are in the unsatisfiable core [2021-05-02 18:52:05,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:05,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2402 backedges. 819 proven. 1482 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-05-02 18:52:05,178 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819994295] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:05,178 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:05,178 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41] total 43 [2021-05-02 18:52:05,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218806223] [2021-05-02 18:52:05,178 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-02 18:52:05,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:05,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-02 18:52:05,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2021-05-02 18:52:05,179 INFO L87 Difference]: Start difference. First operand 112 states and 124 transitions. Second operand has 43 states, 43 states have (on average 2.1627906976744184) internal successors, (93), 42 states have internal predecessors, (93), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:06,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:06,592 INFO L93 Difference]: Finished difference Result 114 states and 126 transitions. [2021-05-02 18:52:06,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-02 18:52:06,593 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.1627906976744184) internal successors, (93), 42 states have internal predecessors, (93), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 111 [2021-05-02 18:52:06,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:06,593 INFO L225 Difference]: With dead ends: 114 [2021-05-02 18:52:06,593 INFO L226 Difference]: Without dead ends: 114 [2021-05-02 18:52:06,594 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 1977.6ms TimeCoverageRelationStatistics Valid=2502, Invalid=4140, Unknown=0, NotChecked=0, Total=6642 [2021-05-02 18:52:06,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-05-02 18:52:06,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2021-05-02 18:52:06,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 109 states have (on average 1.1192660550458715) internal successors, (122), 109 states have internal predecessors, (122), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:06,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 126 transitions. [2021-05-02 18:52:06,595 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 126 transitions. Word has length 111 [2021-05-02 18:52:06,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:06,595 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 126 transitions. [2021-05-02 18:52:06,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 2.1627906976744184) internal successors, (93), 42 states have internal predecessors, (93), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:06,595 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 126 transitions. [2021-05-02 18:52:06,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-05-02 18:52:06,596 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:06,596 INFO L523 BasicCegarLoop]: trace histogram [50, 39, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:06,812 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-05-02 18:52:06,812 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:06,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:06,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1742531672, now seen corresponding path program 36 times [2021-05-02 18:52:06,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:06,813 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843908015] [2021-05-02 18:52:06,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:06,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:07,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:07,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:07,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 840 proven. 1560 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-05-02 18:52:07,485 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:07,485 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843908015] [2021-05-02 18:52:07,485 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843908015] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:07,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266693257] [2021-05-02 18:52:07,486 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:07,636 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 47 check-sat command(s) [2021-05-02 18:52:07,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:07,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-02 18:52:07,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:07,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 897 proven. 121 refuted. 0 times theorem prover too weak. 1483 trivial. 0 not checked. [2021-05-02 18:52:08,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266693257] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:08,205 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:08,205 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 14] total 55 [2021-05-02 18:52:08,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149190533] [2021-05-02 18:52:08,205 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-05-02 18:52:08,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:08,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-05-02 18:52:08,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2021-05-02 18:52:08,206 INFO L87 Difference]: Start difference. First operand 114 states and 126 transitions. Second operand has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:10,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:10,422 INFO L93 Difference]: Finished difference Result 119 states and 133 transitions. [2021-05-02 18:52:10,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-02 18:52:10,422 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2021-05-02 18:52:10,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:10,423 INFO L225 Difference]: With dead ends: 119 [2021-05-02 18:52:10,423 INFO L226 Difference]: Without dead ends: 119 [2021-05-02 18:52:10,423 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 3040.4ms TimeCoverageRelationStatistics Valid=4293, Invalid=7049, Unknown=0, NotChecked=0, Total=11342 [2021-05-02 18:52:10,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-05-02 18:52:10,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2021-05-02 18:52:10,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 113 states have (on average 1.1238938053097345) internal successors, (127), 113 states have internal predecessors, (127), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:10,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 131 transitions. [2021-05-02 18:52:10,425 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 131 transitions. Word has length 113 [2021-05-02 18:52:10,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:10,425 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 131 transitions. [2021-05-02 18:52:10,425 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 55 states, 55 states have (on average 2.1636363636363636) internal successors, (119), 54 states have internal predecessors, (119), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:10,425 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 131 transitions. [2021-05-02 18:52:10,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-05-02 18:52:10,426 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:10,426 INFO L523 BasicCegarLoop]: trace histogram [52, 40, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:10,640 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-05-02 18:52:10,641 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:10,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:10,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1731805265, now seen corresponding path program 37 times [2021-05-02 18:52:10,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:10,641 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661520535] [2021-05-02 18:52:10,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:10,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:11,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:11,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:11,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2705 backedges. 943 proven. 1640 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-05-02 18:52:11,296 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:11,296 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661520535] [2021-05-02 18:52:11,296 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661520535] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:11,296 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005119772] [2021-05-02 18:52:11,296 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:11,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:11,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 42 conjunts are in the unsatisfiable core [2021-05-02 18:52:11,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:11,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:11,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2705 backedges. 943 proven. 1640 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-05-02 18:52:11,523 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005119772] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:11,523 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:11,523 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43] total 45 [2021-05-02 18:52:11,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218214608] [2021-05-02 18:52:11,523 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-05-02 18:52:11,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:11,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-05-02 18:52:11,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2021-05-02 18:52:11,524 INFO L87 Difference]: Start difference. First operand 118 states and 131 transitions. Second operand has 45 states, 45 states have (on average 2.1555555555555554) internal successors, (97), 44 states have internal predecessors, (97), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:13,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:13,048 INFO L93 Difference]: Finished difference Result 120 states and 133 transitions. [2021-05-02 18:52:13,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-02 18:52:13,049 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.1555555555555554) internal successors, (97), 44 states have internal predecessors, (97), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 117 [2021-05-02 18:52:13,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:13,049 INFO L225 Difference]: With dead ends: 120 [2021-05-02 18:52:13,049 INFO L226 Difference]: Without dead ends: 120 [2021-05-02 18:52:13,050 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 1972.1ms TimeCoverageRelationStatistics Valid=2753, Invalid=4557, Unknown=0, NotChecked=0, Total=7310 [2021-05-02 18:52:13,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-05-02 18:52:13,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-05-02 18:52:13,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 115 states have (on average 1.1217391304347826) internal successors, (129), 115 states have internal predecessors, (129), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:13,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 133 transitions. [2021-05-02 18:52:13,051 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 133 transitions. Word has length 117 [2021-05-02 18:52:13,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:13,052 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 133 transitions. [2021-05-02 18:52:13,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 45 states, 45 states have (on average 2.1555555555555554) internal successors, (97), 44 states have internal predecessors, (97), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:13,052 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 133 transitions. [2021-05-02 18:52:13,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-05-02 18:52:13,052 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:13,052 INFO L523 BasicCegarLoop]: trace histogram [53, 41, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:13,257 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:13,257 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:13,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:13,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1178306293, now seen corresponding path program 38 times [2021-05-02 18:52:13,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:13,257 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650157136] [2021-05-02 18:52:13,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:13,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:13,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:13,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:13,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2810 backedges. 966 proven. 1722 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-05-02 18:52:13,985 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:13,985 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650157136] [2021-05-02 18:52:13,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650157136] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:13,986 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860711009] [2021-05-02 18:52:13,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:14,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:52:14,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:14,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 43 conjunts are in the unsatisfiable core [2021-05-02 18:52:14,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:14,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2810 backedges. 966 proven. 1722 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-05-02 18:52:14,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860711009] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:14,242 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:14,242 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44] total 46 [2021-05-02 18:52:14,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661928253] [2021-05-02 18:52:14,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-05-02 18:52:14,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:14,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-05-02 18:52:14,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2021-05-02 18:52:14,244 INFO L87 Difference]: Start difference. First operand 120 states and 133 transitions. Second operand has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 45 states have internal predecessors, (99), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:15,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:15,926 INFO L93 Difference]: Finished difference Result 122 states and 135 transitions. [2021-05-02 18:52:15,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-02 18:52:15,926 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 45 states have internal predecessors, (99), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 119 [2021-05-02 18:52:15,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:15,927 INFO L225 Difference]: With dead ends: 122 [2021-05-02 18:52:15,927 INFO L226 Difference]: Without dead ends: 122 [2021-05-02 18:52:15,927 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 2099.0ms TimeCoverageRelationStatistics Valid=2883, Invalid=4773, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 18:52:15,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-05-02 18:52:15,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-05-02 18:52:15,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 117 states have (on average 1.1196581196581197) internal successors, (131), 117 states have internal predecessors, (131), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:15,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 135 transitions. [2021-05-02 18:52:15,929 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 135 transitions. Word has length 119 [2021-05-02 18:52:15,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:15,929 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 135 transitions. [2021-05-02 18:52:15,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 2.152173913043478) internal successors, (99), 45 states have internal predecessors, (99), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:15,930 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 135 transitions. [2021-05-02 18:52:15,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-05-02 18:52:15,930 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:15,930 INFO L523 BasicCegarLoop]: trace histogram [54, 42, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:16,148 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:16,149 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:16,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:16,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1841738905, now seen corresponding path program 39 times [2021-05-02 18:52:16,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:16,149 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854059367] [2021-05-02 18:52:16,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:16,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:16,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:16,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2917 backedges. 989 proven. 1806 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-05-02 18:52:16,870 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:16,870 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854059367] [2021-05-02 18:52:16,870 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854059367] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:16,870 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897874202] [2021-05-02 18:52:16,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:16,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) [2021-05-02 18:52:16,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:16,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 18:52:16,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:17,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2917 backedges. 1050 proven. 144 refuted. 0 times theorem prover too weak. 1723 trivial. 0 not checked. [2021-05-02 18:52:17,550 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897874202] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:17,550 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:17,550 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 15] total 59 [2021-05-02 18:52:17,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220195492] [2021-05-02 18:52:17,551 INFO L460 AbstractCegarLoop]: Interpolant automaton has 59 states [2021-05-02 18:52:17,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:17,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-05-02 18:52:17,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2021-05-02 18:52:17,551 INFO L87 Difference]: Start difference. First operand 122 states and 135 transitions. Second operand has 59 states, 59 states have (on average 2.152542372881356) internal successors, (127), 58 states have internal predecessors, (127), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:20,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:20,068 INFO L93 Difference]: Finished difference Result 127 states and 142 transitions. [2021-05-02 18:52:20,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-02 18:52:20,069 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.152542372881356) internal successors, (127), 58 states have internal predecessors, (127), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 121 [2021-05-02 18:52:20,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:20,069 INFO L225 Difference]: With dead ends: 127 [2021-05-02 18:52:20,069 INFO L226 Difference]: Without dead ends: 127 [2021-05-02 18:52:20,070 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1582 ImplicationChecksByTransitivity, 3399.5ms TimeCoverageRelationStatistics Valid=4959, Invalid=8151, Unknown=0, NotChecked=0, Total=13110 [2021-05-02 18:52:20,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-05-02 18:52:20,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 126. [2021-05-02 18:52:20,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 121 states have (on average 1.1239669421487604) internal successors, (136), 121 states have internal predecessors, (136), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:20,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 140 transitions. [2021-05-02 18:52:20,072 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 140 transitions. Word has length 121 [2021-05-02 18:52:20,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:20,072 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 140 transitions. [2021-05-02 18:52:20,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 59 states, 59 states have (on average 2.152542372881356) internal successors, (127), 58 states have internal predecessors, (127), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:20,072 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 140 transitions. [2021-05-02 18:52:20,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-05-02 18:52:20,072 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:20,072 INFO L523 BasicCegarLoop]: trace histogram [56, 43, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:20,287 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:20,287 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:20,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:20,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1145079042, now seen corresponding path program 40 times [2021-05-02 18:52:20,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:20,288 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250602537] [2021-05-02 18:52:20,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:21,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:21,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:21,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3137 backedges. 1100 proven. 1892 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-05-02 18:52:21,080 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:21,080 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250602537] [2021-05-02 18:52:21,080 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250602537] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:21,080 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133872578] [2021-05-02 18:52:21,080 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:21,135 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:52:21,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:21,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 45 conjunts are in the unsatisfiable core [2021-05-02 18:52:21,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:21,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:21,328 INFO L134 CoverageAnalysis]: Checked inductivity of 3137 backedges. 1100 proven. 1892 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-05-02 18:52:21,328 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133872578] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:21,328 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:21,328 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46] total 48 [2021-05-02 18:52:21,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652402557] [2021-05-02 18:52:21,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-05-02 18:52:21,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:21,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-05-02 18:52:21,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2021-05-02 18:52:21,330 INFO L87 Difference]: Start difference. First operand 126 states and 140 transitions. Second operand has 48 states, 48 states have (on average 2.1458333333333335) internal successors, (103), 47 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:23,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:23,130 INFO L93 Difference]: Finished difference Result 128 states and 142 transitions. [2021-05-02 18:52:23,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-02 18:52:23,130 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.1458333333333335) internal successors, (103), 47 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 125 [2021-05-02 18:52:23,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:23,131 INFO L225 Difference]: With dead ends: 128 [2021-05-02 18:52:23,131 INFO L226 Difference]: Without dead ends: 128 [2021-05-02 18:52:23,131 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1115 ImplicationChecksByTransitivity, 2314.8ms TimeCoverageRelationStatistics Valid=3152, Invalid=5220, Unknown=0, NotChecked=0, Total=8372 [2021-05-02 18:52:23,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-05-02 18:52:23,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-05-02 18:52:23,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 123 states have (on average 1.1219512195121952) internal successors, (138), 123 states have internal predecessors, (138), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:23,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 142 transitions. [2021-05-02 18:52:23,133 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 142 transitions. Word has length 125 [2021-05-02 18:52:23,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:23,133 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 142 transitions. [2021-05-02 18:52:23,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 48 states, 48 states have (on average 2.1458333333333335) internal successors, (103), 47 states have internal predecessors, (103), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:23,134 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 142 transitions. [2021-05-02 18:52:23,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-05-02 18:52:23,134 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:23,134 INFO L523 BasicCegarLoop]: trace histogram [57, 44, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:23,334 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-05-02 18:52:23,335 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:23,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:23,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1284249690, now seen corresponding path program 41 times [2021-05-02 18:52:23,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:23,335 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931432130] [2021-05-02 18:52:23,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:24,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:24,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:24,198 INFO L134 CoverageAnalysis]: Checked inductivity of 3250 backedges. 1125 proven. 1980 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-05-02 18:52:24,198 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:24,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931432130] [2021-05-02 18:52:24,198 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931432130] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:24,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960931973] [2021-05-02 18:52:24,198 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:24,267 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2021-05-02 18:52:24,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:24,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 46 conjunts are in the unsatisfiable core [2021-05-02 18:52:24,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:24,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,467 INFO L134 CoverageAnalysis]: Checked inductivity of 3250 backedges. 1125 proven. 1980 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-05-02 18:52:24,467 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960931973] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:24,467 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:24,467 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47] total 49 [2021-05-02 18:52:24,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832121356] [2021-05-02 18:52:24,468 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-05-02 18:52:24,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:24,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-05-02 18:52:24,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2021-05-02 18:52:24,468 INFO L87 Difference]: Start difference. First operand 128 states and 142 transitions. Second operand has 49 states, 49 states have (on average 2.142857142857143) internal successors, (105), 48 states have internal predecessors, (105), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:26,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:26,334 INFO L93 Difference]: Finished difference Result 130 states and 144 transitions. [2021-05-02 18:52:26,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-02 18:52:26,334 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.142857142857143) internal successors, (105), 48 states have internal predecessors, (105), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 127 [2021-05-02 18:52:26,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:26,335 INFO L225 Difference]: With dead ends: 130 [2021-05-02 18:52:26,335 INFO L226 Difference]: Without dead ends: 130 [2021-05-02 18:52:26,335 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1163 ImplicationChecksByTransitivity, 2462.1ms TimeCoverageRelationStatistics Valid=3291, Invalid=5451, Unknown=0, NotChecked=0, Total=8742 [2021-05-02 18:52:26,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-05-02 18:52:26,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-05-02 18:52:26,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 125 states have (on average 1.12) internal successors, (140), 125 states have internal predecessors, (140), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:26,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 144 transitions. [2021-05-02 18:52:26,337 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 144 transitions. Word has length 127 [2021-05-02 18:52:26,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:26,337 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 144 transitions. [2021-05-02 18:52:26,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 49 states, 49 states have (on average 2.142857142857143) internal successors, (105), 48 states have internal predecessors, (105), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:26,337 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 144 transitions. [2021-05-02 18:52:26,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-05-02 18:52:26,338 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:26,338 INFO L523 BasicCegarLoop]: trace histogram [58, 45, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:26,553 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:26,553 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:26,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:26,554 INFO L82 PathProgramCache]: Analyzing trace with hash -593047882, now seen corresponding path program 42 times [2021-05-02 18:52:26,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:26,554 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117480775] [2021-05-02 18:52:26,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:27,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:27,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:27,409 INFO L134 CoverageAnalysis]: Checked inductivity of 3365 backedges. 1150 proven. 2070 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-05-02 18:52:27,409 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:27,409 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117480775] [2021-05-02 18:52:27,409 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117480775] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:27,409 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450673045] [2021-05-02 18:52:27,409 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:27,552 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2021-05-02 18:52:27,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:27,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-02 18:52:27,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:27,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:27,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:27,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:27,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:27,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:27,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:27,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:27,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:27,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:27,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:27,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:27,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:27,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:27,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:27,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:27,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:27,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:27,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3365 backedges. 1215 proven. 169 refuted. 0 times theorem prover too weak. 1981 trivial. 0 not checked. [2021-05-02 18:52:28,260 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450673045] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:28,260 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:28,260 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 16] total 63 [2021-05-02 18:52:28,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622753327] [2021-05-02 18:52:28,261 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-05-02 18:52:28,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:28,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-05-02 18:52:28,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2021-05-02 18:52:28,261 INFO L87 Difference]: Start difference. First operand 130 states and 144 transitions. Second operand has 63 states, 63 states have (on average 2.142857142857143) internal successors, (135), 62 states have internal predecessors, (135), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:31,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:31,031 INFO L93 Difference]: Finished difference Result 135 states and 151 transitions. [2021-05-02 18:52:31,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-02 18:52:31,031 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.142857142857143) internal successors, (135), 62 states have internal predecessors, (135), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 129 [2021-05-02 18:52:31,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:31,032 INFO L225 Difference]: With dead ends: 135 [2021-05-02 18:52:31,032 INFO L226 Difference]: Without dead ends: 135 [2021-05-02 18:52:31,032 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1815 ImplicationChecksByTransitivity, 3859.6ms TimeCoverageRelationStatistics Valid=5673, Invalid=9333, Unknown=0, NotChecked=0, Total=15006 [2021-05-02 18:52:31,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-05-02 18:52:31,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 134. [2021-05-02 18:52:31,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 129 states have (on average 1.124031007751938) internal successors, (145), 129 states have internal predecessors, (145), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:31,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 149 transitions. [2021-05-02 18:52:31,034 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 149 transitions. Word has length 129 [2021-05-02 18:52:31,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:31,034 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 149 transitions. [2021-05-02 18:52:31,035 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 63 states, 63 states have (on average 2.142857142857143) internal successors, (135), 62 states have internal predecessors, (135), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:31,035 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 149 transitions. [2021-05-02 18:52:31,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-05-02 18:52:31,035 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:31,035 INFO L523 BasicCegarLoop]: trace histogram [60, 46, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:31,240 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:31,241 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:31,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:31,241 INFO L82 PathProgramCache]: Analyzing trace with hash 183323277, now seen corresponding path program 43 times [2021-05-02 18:52:31,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:31,241 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597490110] [2021-05-02 18:52:31,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:31,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:32,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:32,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:32,149 INFO L134 CoverageAnalysis]: Checked inductivity of 3601 backedges. 1269 proven. 2162 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-05-02 18:52:32,149 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:32,149 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597490110] [2021-05-02 18:52:32,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597490110] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:32,149 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858327066] [2021-05-02 18:52:32,149 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:32,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:32,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 48 conjunts are in the unsatisfiable core [2021-05-02 18:52:32,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:32,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,473 INFO L134 CoverageAnalysis]: Checked inductivity of 3601 backedges. 1269 proven. 2162 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-05-02 18:52:32,473 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858327066] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:32,473 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:32,473 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49] total 51 [2021-05-02 18:52:32,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780350019] [2021-05-02 18:52:32,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-05-02 18:52:32,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:32,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-05-02 18:52:32,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2021-05-02 18:52:32,474 INFO L87 Difference]: Start difference. First operand 134 states and 149 transitions. Second operand has 51 states, 51 states have (on average 2.1372549019607843) internal successors, (109), 50 states have internal predecessors, (109), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:34,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:34,474 INFO L93 Difference]: Finished difference Result 136 states and 151 transitions. [2021-05-02 18:52:34,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-02 18:52:34,474 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.1372549019607843) internal successors, (109), 50 states have internal predecessors, (109), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 133 [2021-05-02 18:52:34,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:34,475 INFO L225 Difference]: With dead ends: 136 [2021-05-02 18:52:34,475 INFO L226 Difference]: Without dead ends: 136 [2021-05-02 18:52:34,475 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1262 ImplicationChecksByTransitivity, 2693.4ms TimeCoverageRelationStatistics Valid=3578, Invalid=5928, Unknown=0, NotChecked=0, Total=9506 [2021-05-02 18:52:34,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-05-02 18:52:34,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2021-05-02 18:52:34,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 131 states have (on average 1.1221374045801527) internal successors, (147), 131 states have internal predecessors, (147), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:34,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 151 transitions. [2021-05-02 18:52:34,477 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 151 transitions. Word has length 133 [2021-05-02 18:52:34,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:34,477 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 151 transitions. [2021-05-02 18:52:34,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 51 states, 51 states have (on average 2.1372549019607843) internal successors, (109), 50 states have internal predecessors, (109), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:34,477 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 151 transitions. [2021-05-02 18:52:34,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-05-02 18:52:34,477 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:34,478 INFO L523 BasicCegarLoop]: trace histogram [61, 47, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:34,690 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-05-02 18:52:34,690 INFO L428 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:34,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:34,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1348783081, now seen corresponding path program 44 times [2021-05-02 18:52:34,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:34,690 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212587529] [2021-05-02 18:52:34,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:34,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:35,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:35,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:35,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3722 backedges. 1296 proven. 2256 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-05-02 18:52:35,646 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:35,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212587529] [2021-05-02 18:52:35,646 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212587529] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:35,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109241433] [2021-05-02 18:52:35,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:35,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:52:35,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:35,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 49 conjunts are in the unsatisfiable core [2021-05-02 18:52:35,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:35,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:35,922 INFO L134 CoverageAnalysis]: Checked inductivity of 3722 backedges. 1296 proven. 2256 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-05-02 18:52:35,922 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109241433] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:35,922 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:35,923 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50] total 52 [2021-05-02 18:52:35,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637609830] [2021-05-02 18:52:35,923 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-02 18:52:35,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:35,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-02 18:52:35,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 18:52:35,924 INFO L87 Difference]: Start difference. First operand 136 states and 151 transitions. Second operand has 52 states, 52 states have (on average 2.1346153846153846) internal successors, (111), 51 states have internal predecessors, (111), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:38,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:38,015 INFO L93 Difference]: Finished difference Result 138 states and 153 transitions. [2021-05-02 18:52:38,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-02 18:52:38,015 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.1346153846153846) internal successors, (111), 51 states have internal predecessors, (111), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 135 [2021-05-02 18:52:38,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:38,016 INFO L225 Difference]: With dead ends: 138 [2021-05-02 18:52:38,016 INFO L226 Difference]: Without dead ends: 138 [2021-05-02 18:52:38,017 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1313 ImplicationChecksByTransitivity, 2730.6ms TimeCoverageRelationStatistics Valid=3726, Invalid=6174, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 18:52:38,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-05-02 18:52:38,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2021-05-02 18:52:38,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 133 states have (on average 1.1203007518796992) internal successors, (149), 133 states have internal predecessors, (149), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:38,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 153 transitions. [2021-05-02 18:52:38,022 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 153 transitions. Word has length 135 [2021-05-02 18:52:38,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:38,022 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 153 transitions. [2021-05-02 18:52:38,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 2.1346153846153846) internal successors, (111), 51 states have internal predecessors, (111), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:38,022 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 153 transitions. [2021-05-02 18:52:38,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-05-02 18:52:38,023 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:38,023 INFO L523 BasicCegarLoop]: trace histogram [62, 48, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:38,236 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-05-02 18:52:38,237 INFO L428 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:38,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:38,237 INFO L82 PathProgramCache]: Analyzing trace with hash 369190469, now seen corresponding path program 45 times [2021-05-02 18:52:38,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:38,237 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325781091] [2021-05-02 18:52:38,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:39,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:39,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:39,205 INFO L134 CoverageAnalysis]: Checked inductivity of 3845 backedges. 1323 proven. 2352 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-05-02 18:52:39,205 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:39,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325781091] [2021-05-02 18:52:39,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325781091] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:39,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702665072] [2021-05-02 18:52:39,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:39,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2021-05-02 18:52:39,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:39,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-02 18:52:39,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:39,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:40,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:40,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:40,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3845 backedges. 1392 proven. 196 refuted. 0 times theorem prover too weak. 2257 trivial. 0 not checked. [2021-05-02 18:52:40,084 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702665072] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:40,084 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:40,084 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 17] total 67 [2021-05-02 18:52:40,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909256045] [2021-05-02 18:52:40,084 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-05-02 18:52:40,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:40,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-05-02 18:52:40,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2021-05-02 18:52:40,085 INFO L87 Difference]: Start difference. First operand 138 states and 153 transitions. Second operand has 67 states, 67 states have (on average 2.1343283582089554) internal successors, (143), 66 states have internal predecessors, (143), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:43,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:43,199 INFO L93 Difference]: Finished difference Result 143 states and 160 transitions. [2021-05-02 18:52:43,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-05-02 18:52:43,199 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.1343283582089554) internal successors, (143), 66 states have internal predecessors, (143), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 137 [2021-05-02 18:52:43,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:43,200 INFO L225 Difference]: With dead ends: 143 [2021-05-02 18:52:43,200 INFO L226 Difference]: Without dead ends: 143 [2021-05-02 18:52:43,201 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2064 ImplicationChecksByTransitivity, 4393.4ms TimeCoverageRelationStatistics Valid=6435, Invalid=10595, Unknown=0, NotChecked=0, Total=17030 [2021-05-02 18:52:43,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-05-02 18:52:43,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 142. [2021-05-02 18:52:43,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 137 states have (on average 1.1240875912408759) internal successors, (154), 137 states have internal predecessors, (154), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:43,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 158 transitions. [2021-05-02 18:52:43,203 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 158 transitions. Word has length 137 [2021-05-02 18:52:43,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:43,203 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 158 transitions. [2021-05-02 18:52:43,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 67 states, 67 states have (on average 2.1343283582089554) internal successors, (143), 66 states have internal predecessors, (143), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:43,203 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 158 transitions. [2021-05-02 18:52:43,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-05-02 18:52:43,203 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:43,203 INFO L523 BasicCegarLoop]: trace histogram [64, 49, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:43,419 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-05-02 18:52:43,419 INFO L428 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:43,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:43,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1911561820, now seen corresponding path program 46 times [2021-05-02 18:52:43,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:43,420 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212130087] [2021-05-02 18:52:43,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:43,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:44,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:44,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:44,472 INFO L134 CoverageAnalysis]: Checked inductivity of 4097 backedges. 1450 proven. 2450 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2021-05-02 18:52:44,472 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:44,472 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212130087] [2021-05-02 18:52:44,473 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212130087] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:44,473 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287949382] [2021-05-02 18:52:44,473 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:44,530 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:52:44,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:44,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 51 conjunts are in the unsatisfiable core [2021-05-02 18:52:44,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:44,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,763 INFO L134 CoverageAnalysis]: Checked inductivity of 4097 backedges. 1450 proven. 2450 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2021-05-02 18:52:44,763 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287949382] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:44,763 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:44,763 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52] total 54 [2021-05-02 18:52:44,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149179860] [2021-05-02 18:52:44,764 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-05-02 18:52:44,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:44,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-05-02 18:52:44,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2021-05-02 18:52:44,764 INFO L87 Difference]: Start difference. First operand 142 states and 158 transitions. Second operand has 54 states, 54 states have (on average 2.1296296296296298) internal successors, (115), 53 states have internal predecessors, (115), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:47,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:47,014 INFO L93 Difference]: Finished difference Result 144 states and 160 transitions. [2021-05-02 18:52:47,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-02 18:52:47,014 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1296296296296298) internal successors, (115), 53 states have internal predecessors, (115), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 141 [2021-05-02 18:52:47,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:47,015 INFO L225 Difference]: With dead ends: 144 [2021-05-02 18:52:47,015 INFO L226 Difference]: Without dead ends: 144 [2021-05-02 18:52:47,015 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1418 ImplicationChecksByTransitivity, 2962.8ms TimeCoverageRelationStatistics Valid=4031, Invalid=6681, Unknown=0, NotChecked=0, Total=10712 [2021-05-02 18:52:47,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-05-02 18:52:47,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2021-05-02 18:52:47,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 139 states have (on average 1.1223021582733812) internal successors, (156), 139 states have internal predecessors, (156), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:47,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 160 transitions. [2021-05-02 18:52:47,017 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 160 transitions. Word has length 141 [2021-05-02 18:52:47,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:47,017 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 160 transitions. [2021-05-02 18:52:47,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 54 states, 54 states have (on average 2.1296296296296298) internal successors, (115), 53 states have internal predecessors, (115), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:47,018 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 160 transitions. [2021-05-02 18:52:47,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-02 18:52:47,018 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:47,018 INFO L523 BasicCegarLoop]: trace histogram [65, 50, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:47,233 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:47,233 INFO L428 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:47,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:47,233 INFO L82 PathProgramCache]: Analyzing trace with hash 351175608, now seen corresponding path program 47 times [2021-05-02 18:52:47,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:47,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80005290] [2021-05-02 18:52:47,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:47,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:48,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:48,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:48,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4226 backedges. 1479 proven. 2550 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2021-05-02 18:52:48,305 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:48,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80005290] [2021-05-02 18:52:48,305 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80005290] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:48,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192154184] [2021-05-02 18:52:48,305 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:48,381 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2021-05-02 18:52:48,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:48,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 52 conjunts are in the unsatisfiable core [2021-05-02 18:52:48,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:48,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:48,606 INFO L134 CoverageAnalysis]: Checked inductivity of 4226 backedges. 1479 proven. 2550 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2021-05-02 18:52:48,606 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192154184] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:48,606 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:48,606 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53] total 55 [2021-05-02 18:52:48,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311891930] [2021-05-02 18:52:48,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-05-02 18:52:48,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:48,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-05-02 18:52:48,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2021-05-02 18:52:48,607 INFO L87 Difference]: Start difference. First operand 144 states and 160 transitions. Second operand has 55 states, 55 states have (on average 2.1272727272727274) internal successors, (117), 54 states have internal predecessors, (117), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:50,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:50,855 INFO L93 Difference]: Finished difference Result 146 states and 162 transitions. [2021-05-02 18:52:50,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-02 18:52:50,856 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1272727272727274) internal successors, (117), 54 states have internal predecessors, (117), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 143 [2021-05-02 18:52:50,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:50,856 INFO L225 Difference]: With dead ends: 146 [2021-05-02 18:52:50,856 INFO L226 Difference]: Without dead ends: 146 [2021-05-02 18:52:50,857 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1472 ImplicationChecksByTransitivity, 2964.6ms TimeCoverageRelationStatistics Valid=4188, Invalid=6942, Unknown=0, NotChecked=0, Total=11130 [2021-05-02 18:52:50,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-05-02 18:52:50,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2021-05-02 18:52:50,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 141 states have (on average 1.1205673758865249) internal successors, (158), 141 states have internal predecessors, (158), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:50,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 162 transitions. [2021-05-02 18:52:50,858 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 162 transitions. Word has length 143 [2021-05-02 18:52:50,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:50,859 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 162 transitions. [2021-05-02 18:52:50,859 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 55 states, 55 states have (on average 2.1272727272727274) internal successors, (117), 54 states have internal predecessors, (117), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:50,859 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 162 transitions. [2021-05-02 18:52:50,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-05-02 18:52:50,859 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:50,859 INFO L523 BasicCegarLoop]: trace histogram [66, 51, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:51,074 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:51,074 INFO L428 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:51,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:51,074 INFO L82 PathProgramCache]: Analyzing trace with hash -236387820, now seen corresponding path program 48 times [2021-05-02 18:52:51,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:51,075 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440021121] [2021-05-02 18:52:51,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:51,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:52,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:52,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:52,163 INFO L134 CoverageAnalysis]: Checked inductivity of 4357 backedges. 1508 proven. 2652 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2021-05-02 18:52:52,163 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:52,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440021121] [2021-05-02 18:52:52,163 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440021121] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:52,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144216084] [2021-05-02 18:52:52,163 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:52,319 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 63 check-sat command(s) [2021-05-02 18:52:52,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:52,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-02 18:52:52,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:52,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:52,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,291 INFO L134 CoverageAnalysis]: Checked inductivity of 4357 backedges. 1581 proven. 225 refuted. 0 times theorem prover too weak. 2551 trivial. 0 not checked. [2021-05-02 18:52:53,291 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144216084] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:53,291 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:53,291 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 18] total 71 [2021-05-02 18:52:53,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778125936] [2021-05-02 18:52:53,292 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-05-02 18:52:53,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:53,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-05-02 18:52:53,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2021-05-02 18:52:53,293 INFO L87 Difference]: Start difference. First operand 146 states and 162 transitions. Second operand has 71 states, 71 states have (on average 2.1267605633802815) internal successors, (151), 70 states have internal predecessors, (151), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:56,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:56,812 INFO L93 Difference]: Finished difference Result 151 states and 169 transitions. [2021-05-02 18:52:56,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-02 18:52:56,812 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.1267605633802815) internal successors, (151), 70 states have internal predecessors, (151), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 145 [2021-05-02 18:52:56,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:56,815 INFO L225 Difference]: With dead ends: 151 [2021-05-02 18:52:56,815 INFO L226 Difference]: Without dead ends: 151 [2021-05-02 18:52:56,815 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2329 ImplicationChecksByTransitivity, 5021.1ms TimeCoverageRelationStatistics Valid=7245, Invalid=11937, Unknown=0, NotChecked=0, Total=19182 [2021-05-02 18:52:56,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-05-02 18:52:56,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 150. [2021-05-02 18:52:56,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 145 states have (on average 1.1241379310344828) internal successors, (163), 145 states have internal predecessors, (163), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:56,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 167 transitions. [2021-05-02 18:52:56,817 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 167 transitions. Word has length 145 [2021-05-02 18:52:56,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:56,817 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 167 transitions. [2021-05-02 18:52:56,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 71 states, 71 states have (on average 2.1267605633802815) internal successors, (151), 70 states have internal predecessors, (151), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:56,817 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 167 transitions. [2021-05-02 18:52:56,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-05-02 18:52:56,818 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:56,818 INFO L523 BasicCegarLoop]: trace histogram [68, 52, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:57,036 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-05-02 18:52:57,037 INFO L428 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:57,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:57,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1607735701, now seen corresponding path program 49 times [2021-05-02 18:52:57,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:57,037 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93821313] [2021-05-02 18:52:57,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:57,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:58,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:58,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:58,160 INFO L134 CoverageAnalysis]: Checked inductivity of 4625 backedges. 1643 proven. 2756 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-05-02 18:52:58,161 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:58,161 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93821313] [2021-05-02 18:52:58,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93821313] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:58,161 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972806273] [2021-05-02 18:52:58,161 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:58,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 54 conjunts are in the unsatisfiable core [2021-05-02 18:52:58,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:58,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:58,451 INFO L134 CoverageAnalysis]: Checked inductivity of 4625 backedges. 1643 proven. 2756 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-05-02 18:52:58,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972806273] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:58,451 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:58,451 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 55] total 57 [2021-05-02 18:52:58,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49032149] [2021-05-02 18:52:58,452 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2021-05-02 18:52:58,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:58,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-05-02 18:52:58,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2021-05-02 18:52:58,452 INFO L87 Difference]: Start difference. First operand 150 states and 167 transitions. Second operand has 57 states, 57 states have (on average 2.1228070175438596) internal successors, (121), 56 states have internal predecessors, (121), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:53:00,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:00,717 INFO L93 Difference]: Finished difference Result 152 states and 169 transitions. [2021-05-02 18:53:00,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-02 18:53:00,718 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.1228070175438596) internal successors, (121), 56 states have internal predecessors, (121), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 149 [2021-05-02 18:53:00,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:00,718 INFO L225 Difference]: With dead ends: 152 [2021-05-02 18:53:00,718 INFO L226 Difference]: Without dead ends: 152 [2021-05-02 18:53:00,719 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1583 ImplicationChecksByTransitivity, 3170.7ms TimeCoverageRelationStatistics Valid=4511, Invalid=7479, Unknown=0, NotChecked=0, Total=11990 [2021-05-02 18:53:00,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-05-02 18:53:00,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-05-02 18:53:00,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 147 states have (on average 1.1224489795918366) internal successors, (165), 147 states have internal predecessors, (165), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:53:00,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 169 transitions. [2021-05-02 18:53:00,721 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 169 transitions. Word has length 149 [2021-05-02 18:53:00,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:00,721 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 169 transitions. [2021-05-02 18:53:00,721 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 57 states, 57 states have (on average 2.1228070175438596) internal successors, (121), 56 states have internal predecessors, (121), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:53:00,721 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 169 transitions. [2021-05-02 18:53:00,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-05-02 18:53:00,721 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:00,721 INFO L523 BasicCegarLoop]: trace histogram [69, 53, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:00,924 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:53:00,925 INFO L428 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:00,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:00,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1383256121, now seen corresponding path program 50 times [2021-05-02 18:53:00,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:00,925 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559860952] [2021-05-02 18:53:00,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:00,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:02,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:02,068 INFO L134 CoverageAnalysis]: Checked inductivity of 4762 backedges. 1674 proven. 2862 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-05-02 18:53:02,068 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:02,068 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559860952] [2021-05-02 18:53:02,068 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559860952] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:02,068 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272295151] [2021-05-02 18:53:02,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:53:02,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:53:02,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:53:02,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 55 conjunts are in the unsatisfiable core [2021-05-02 18:53:02,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:02,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:02,381 INFO L134 CoverageAnalysis]: Checked inductivity of 4762 backedges. 1674 proven. 2862 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-05-02 18:53:02,381 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272295151] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:02,381 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:02,381 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56] total 58 [2021-05-02 18:53:02,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778905651] [2021-05-02 18:53:02,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-05-02 18:53:02,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:02,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-05-02 18:53:02,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 18:53:02,382 INFO L87 Difference]: Start difference. First operand 152 states and 169 transitions. Second operand has 58 states, 58 states have (on average 2.1206896551724137) internal successors, (123), 57 states have internal predecessors, (123), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:53:04,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:04,817 INFO L93 Difference]: Finished difference Result 154 states and 171 transitions. [2021-05-02 18:53:04,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-02 18:53:04,818 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.1206896551724137) internal successors, (123), 57 states have internal predecessors, (123), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 151 [2021-05-02 18:53:04,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:04,819 INFO L225 Difference]: With dead ends: 154 [2021-05-02 18:53:04,819 INFO L226 Difference]: Without dead ends: 154 [2021-05-02 18:53:04,819 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1640 ImplicationChecksByTransitivity, 3298.5ms TimeCoverageRelationStatistics Valid=4677, Invalid=7755, Unknown=0, NotChecked=0, Total=12432 [2021-05-02 18:53:04,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-05-02 18:53:04,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2021-05-02 18:53:04,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 149 states have (on average 1.1208053691275168) internal successors, (167), 149 states have internal predecessors, (167), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:53:04,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 171 transitions. [2021-05-02 18:53:04,821 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 171 transitions. Word has length 151 [2021-05-02 18:53:04,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:04,821 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 171 transitions. [2021-05-02 18:53:04,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 58 states, 58 states have (on average 2.1206896551724137) internal successors, (123), 57 states have internal predecessors, (123), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:53:04,821 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 171 transitions. [2021-05-02 18:53:04,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-05-02 18:53:04,822 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:04,822 INFO L523 BasicCegarLoop]: trace histogram [70, 54, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:05,036 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-05-02 18:53:05,037 INFO L428 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:05,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:05,037 INFO L82 PathProgramCache]: Analyzing trace with hash -406744541, now seen corresponding path program 51 times [2021-05-02 18:53:05,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:05,037 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471520277] [2021-05-02 18:53:05,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:05,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:06,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:06,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:06,258 INFO L134 CoverageAnalysis]: Checked inductivity of 4901 backedges. 1705 proven. 2970 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-05-02 18:53:06,258 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:06,258 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471520277] [2021-05-02 18:53:06,258 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471520277] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:06,258 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192353806] [2021-05-02 18:53:06,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:53:06,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-05-02 18:53:06,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:53:06,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 18:53:06,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:06,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:07,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:07,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:07,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:07,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:07,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:07,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:07,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:07,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:07,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:07,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:07,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:07,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:07,389 INFO L134 CoverageAnalysis]: Checked inductivity of 4901 backedges. 1782 proven. 256 refuted. 0 times theorem prover too weak. 2863 trivial. 0 not checked. [2021-05-02 18:53:07,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192353806] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:07,390 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:07,390 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 19] total 75 [2021-05-02 18:53:07,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842089387] [2021-05-02 18:53:07,390 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-05-02 18:53:07,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:07,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-05-02 18:53:07,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2021-05-02 18:53:07,391 INFO L87 Difference]: Start difference. First operand 154 states and 171 transitions. Second operand has 75 states, 75 states have (on average 2.12) internal successors, (159), 74 states have internal predecessors, (159), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:53:11,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:11,257 INFO L93 Difference]: Finished difference Result 159 states and 178 transitions. [2021-05-02 18:53:11,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-02 18:53:11,258 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.12) internal successors, (159), 74 states have internal predecessors, (159), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 153 [2021-05-02 18:53:11,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:11,258 INFO L225 Difference]: With dead ends: 159 [2021-05-02 18:53:11,258 INFO L226 Difference]: Without dead ends: 159 [2021-05-02 18:53:11,259 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2610 ImplicationChecksByTransitivity, 5558.9ms TimeCoverageRelationStatistics Valid=8103, Invalid=13359, Unknown=0, NotChecked=0, Total=21462 [2021-05-02 18:53:11,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-05-02 18:53:11,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 158. [2021-05-02 18:53:11,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 153 states have (on average 1.1241830065359477) internal successors, (172), 153 states have internal predecessors, (172), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:53:11,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 176 transitions. [2021-05-02 18:53:11,261 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 176 transitions. Word has length 153 [2021-05-02 18:53:11,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:11,261 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 176 transitions. [2021-05-02 18:53:11,261 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 75 states, 75 states have (on average 2.12) internal successors, (159), 74 states have internal predecessors, (159), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:53:11,261 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 176 transitions. [2021-05-02 18:53:11,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-05-02 18:53:11,261 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:11,261 INFO L523 BasicCegarLoop]: trace histogram [72, 55, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:11,472 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-05-02 18:53:11,473 INFO L428 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:11,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:11,473 INFO L82 PathProgramCache]: Analyzing trace with hash 667456186, now seen corresponding path program 52 times [2021-05-02 18:53:11,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:11,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746824798] [2021-05-02 18:53:11,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:12,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:12,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:12,697 INFO L134 CoverageAnalysis]: Checked inductivity of 5185 backedges. 1848 proven. 3080 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-05-02 18:53:12,697 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:12,697 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746824798] [2021-05-02 18:53:12,697 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746824798] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:12,698 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069742969] [2021-05-02 18:53:12,698 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:53:12,764 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:53:12,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:53:12,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 57 conjunts are in the unsatisfiable core [2021-05-02 18:53:12,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:12,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:12,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,029 INFO L134 CoverageAnalysis]: Checked inductivity of 5185 backedges. 1848 proven. 3080 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-05-02 18:53:13,029 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069742969] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:13,029 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:13,029 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 58] total 60 [2021-05-02 18:53:13,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117481954] [2021-05-02 18:53:13,030 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2021-05-02 18:53:13,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:13,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-05-02 18:53:13,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2021-05-02 18:53:13,030 INFO L87 Difference]: Start difference. First operand 158 states and 176 transitions. Second operand has 60 states, 60 states have (on average 2.1166666666666667) internal successors, (127), 59 states have internal predecessors, (127), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:53:15,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:15,680 INFO L93 Difference]: Finished difference Result 160 states and 178 transitions. [2021-05-02 18:53:15,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-02 18:53:15,681 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.1166666666666667) internal successors, (127), 59 states have internal predecessors, (127), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 157 [2021-05-02 18:53:15,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:15,681 INFO L225 Difference]: With dead ends: 160 [2021-05-02 18:53:15,681 INFO L226 Difference]: Without dead ends: 160 [2021-05-02 18:53:15,682 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1757 ImplicationChecksByTransitivity, 3515.5ms TimeCoverageRelationStatistics Valid=5018, Invalid=8322, Unknown=0, NotChecked=0, Total=13340 [2021-05-02 18:53:15,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-05-02 18:53:15,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-05-02 18:53:15,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 155 states have (on average 1.1225806451612903) internal successors, (174), 155 states have internal predecessors, (174), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:53:15,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 178 transitions. [2021-05-02 18:53:15,683 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 178 transitions. Word has length 157 [2021-05-02 18:53:15,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:15,684 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 178 transitions. [2021-05-02 18:53:15,684 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 60 states, 60 states have (on average 2.1166666666666667) internal successors, (127), 59 states have internal predecessors, (127), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:53:15,684 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 178 transitions. [2021-05-02 18:53:15,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-05-02 18:53:15,684 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:15,684 INFO L523 BasicCegarLoop]: trace histogram [73, 56, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:15,892 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-05-02 18:53:15,893 INFO L428 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:15,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:15,893 INFO L82 PathProgramCache]: Analyzing trace with hash 275300374, now seen corresponding path program 53 times [2021-05-02 18:53:15,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:15,893 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548842577] [2021-05-02 18:53:15,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:17,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:17,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:17,178 INFO L134 CoverageAnalysis]: Checked inductivity of 5330 backedges. 1881 proven. 3192 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-05-02 18:53:17,178 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:17,178 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548842577] [2021-05-02 18:53:17,178 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548842577] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:17,178 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670848291] [2021-05-02 18:53:17,178 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:53:17,269 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 74 check-sat command(s) [2021-05-02 18:53:17,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:53:17,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 58 conjunts are in the unsatisfiable core [2021-05-02 18:53:17,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:17,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:17,515 INFO L134 CoverageAnalysis]: Checked inductivity of 5330 backedges. 1881 proven. 3192 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-05-02 18:53:17,515 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670848291] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:17,515 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:17,515 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59] total 61 [2021-05-02 18:53:17,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433711341] [2021-05-02 18:53:17,516 INFO L460 AbstractCegarLoop]: Interpolant automaton has 61 states [2021-05-02 18:53:17,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:17,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-05-02 18:53:17,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2021-05-02 18:53:17,516 INFO L87 Difference]: Start difference. First operand 160 states and 178 transitions. Second operand has 61 states, 61 states have (on average 2.1147540983606556) internal successors, (129), 60 states have internal predecessors, (129), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:53:20,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:20,306 INFO L93 Difference]: Finished difference Result 162 states and 180 transitions. [2021-05-02 18:53:20,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-02 18:53:20,307 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.1147540983606556) internal successors, (129), 60 states have internal predecessors, (129), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 159 [2021-05-02 18:53:20,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:20,307 INFO L225 Difference]: With dead ends: 162 [2021-05-02 18:53:20,307 INFO L226 Difference]: Without dead ends: 162 [2021-05-02 18:53:20,308 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1817 ImplicationChecksByTransitivity, 3691.4ms TimeCoverageRelationStatistics Valid=5193, Invalid=8613, Unknown=0, NotChecked=0, Total=13806 [2021-05-02 18:53:20,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-05-02 18:53:20,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2021-05-02 18:53:20,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 157 states have (on average 1.1210191082802548) internal successors, (176), 157 states have internal predecessors, (176), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:53:20,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 180 transitions. [2021-05-02 18:53:20,310 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 180 transitions. Word has length 159 [2021-05-02 18:53:20,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:20,310 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 180 transitions. [2021-05-02 18:53:20,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 61 states, 61 states have (on average 2.1147540983606556) internal successors, (129), 60 states have internal predecessors, (129), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:53:20,310 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 180 transitions. [2021-05-02 18:53:20,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-05-02 18:53:20,311 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:20,311 INFO L523 BasicCegarLoop]: trace histogram [74, 57, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:20,524 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-05-02 18:53:20,525 INFO L428 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:20,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:20,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1370687090, now seen corresponding path program 54 times [2021-05-02 18:53:20,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:20,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958818132] [2021-05-02 18:53:20,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:20,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:22,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:22,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:22,019 INFO L134 CoverageAnalysis]: Checked inductivity of 5477 backedges. 1914 proven. 3306 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-05-02 18:53:22,019 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:22,019 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958818132] [2021-05-02 18:53:22,019 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958818132] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:22,019 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647687792] [2021-05-02 18:53:22,019 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:53:22,211 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 71 check-sat command(s) [2021-05-02 18:53:22,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:53:22,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-02 18:53:22,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:22,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:22,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:23,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:23,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:23,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:23,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:23,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:23,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:23,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:23,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:23,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:23,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:23,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:23,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:23,439 INFO L134 CoverageAnalysis]: Checked inductivity of 5477 backedges. 1995 proven. 289 refuted. 0 times theorem prover too weak. 3193 trivial. 0 not checked. [2021-05-02 18:53:23,439 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647687792] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:23,440 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:23,440 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 20] total 79 [2021-05-02 18:53:23,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537755719] [2021-05-02 18:53:23,440 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-05-02 18:53:23,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:23,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-05-02 18:53:23,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2021-05-02 18:53:23,441 INFO L87 Difference]: Start difference. First operand 162 states and 180 transitions. Second operand has 79 states, 79 states have (on average 2.1139240506329116) internal successors, (167), 78 states have internal predecessors, (167), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:53:28,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:28,119 INFO L93 Difference]: Finished difference Result 167 states and 187 transitions. [2021-05-02 18:53:28,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-05-02 18:53:28,120 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.1139240506329116) internal successors, (167), 78 states have internal predecessors, (167), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 161 [2021-05-02 18:53:28,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:28,120 INFO L225 Difference]: With dead ends: 167 [2021-05-02 18:53:28,120 INFO L226 Difference]: Without dead ends: 167 [2021-05-02 18:53:28,121 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2907 ImplicationChecksByTransitivity, 6714.1ms TimeCoverageRelationStatistics Valid=9009, Invalid=14861, Unknown=0, NotChecked=0, Total=23870 [2021-05-02 18:53:28,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-05-02 18:53:28,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 166. [2021-05-02 18:53:28,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 161 states have (on average 1.124223602484472) internal successors, (181), 161 states have internal predecessors, (181), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:53:28,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 185 transitions. [2021-05-02 18:53:28,123 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 185 transitions. Word has length 161 [2021-05-02 18:53:28,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:28,123 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 185 transitions. [2021-05-02 18:53:28,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 79 states, 79 states have (on average 2.1139240506329116) internal successors, (167), 78 states have internal predecessors, (167), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:53:28,123 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 185 transitions. [2021-05-02 18:53:28,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-05-02 18:53:28,123 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:28,124 INFO L523 BasicCegarLoop]: trace histogram [76, 58, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:28,324 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:53:28,324 INFO L428 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:28,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:28,324 INFO L82 PathProgramCache]: Analyzing trace with hash -592309431, now seen corresponding path program 55 times [2021-05-02 18:53:28,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:28,324 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52090830] [2021-05-02 18:53:28,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:29,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:29,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:29,813 INFO L134 CoverageAnalysis]: Checked inductivity of 5777 backedges. 2065 proven. 3422 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-05-02 18:53:29,813 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:29,813 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52090830] [2021-05-02 18:53:29,813 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52090830] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:29,813 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761000332] [2021-05-02 18:53:29,813 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:53:29,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:29,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 60 conjunts are in the unsatisfiable core [2021-05-02 18:53:29,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:29,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:29,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:30,137 INFO L134 CoverageAnalysis]: Checked inductivity of 5777 backedges. 2065 proven. 3422 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-05-02 18:53:30,138 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761000332] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:30,138 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:30,138 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 61] total 63 [2021-05-02 18:53:30,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910945511] [2021-05-02 18:53:30,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-05-02 18:53:30,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:30,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-05-02 18:53:30,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2021-05-02 18:53:30,139 INFO L87 Difference]: Start difference. First operand 166 states and 185 transitions. Second operand has 63 states, 63 states have (on average 2.111111111111111) internal successors, (133), 62 states have internal predecessors, (133), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:53:32,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:32,949 INFO L93 Difference]: Finished difference Result 168 states and 187 transitions. [2021-05-02 18:53:32,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-05-02 18:53:32,950 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.111111111111111) internal successors, (133), 62 states have internal predecessors, (133), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 165 [2021-05-02 18:53:32,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:32,950 INFO L225 Difference]: With dead ends: 168 [2021-05-02 18:53:32,950 INFO L226 Difference]: Without dead ends: 168 [2021-05-02 18:53:32,951 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1940 ImplicationChecksByTransitivity, 3929.1ms TimeCoverageRelationStatistics Valid=5552, Invalid=9210, Unknown=0, NotChecked=0, Total=14762 [2021-05-02 18:53:32,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-05-02 18:53:32,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2021-05-02 18:53:32,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 163 states have (on average 1.1226993865030674) internal successors, (183), 163 states have internal predecessors, (183), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:53:32,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 187 transitions. [2021-05-02 18:53:32,953 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 187 transitions. Word has length 165 [2021-05-02 18:53:32,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:32,953 INFO L480 AbstractCegarLoop]: Abstraction has 168 states and 187 transitions. [2021-05-02 18:53:32,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 63 states, 63 states have (on average 2.111111111111111) internal successors, (133), 62 states have internal predecessors, (133), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:53:32,953 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 187 transitions. [2021-05-02 18:53:32,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-05-02 18:53:32,953 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:32,953 INFO L523 BasicCegarLoop]: trace histogram [77, 59, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:33,168 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-05-02 18:53:33,168 INFO L428 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:33,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:33,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1970087077, now seen corresponding path program 56 times [2021-05-02 18:53:33,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:33,169 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976162355] [2021-05-02 18:53:33,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:34,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:34,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:34,611 INFO L134 CoverageAnalysis]: Checked inductivity of 5930 backedges. 2100 proven. 3540 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-05-02 18:53:34,611 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:34,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976162355] [2021-05-02 18:53:34,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976162355] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:34,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104208912] [2021-05-02 18:53:34,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:53:34,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:53:34,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:53:34,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 61 conjunts are in the unsatisfiable core [2021-05-02 18:53:34,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:34,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:34,950 INFO L134 CoverageAnalysis]: Checked inductivity of 5930 backedges. 2100 proven. 3540 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-05-02 18:53:34,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104208912] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:34,950 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:34,950 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62] total 64 [2021-05-02 18:53:34,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608711592] [2021-05-02 18:53:34,950 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-05-02 18:53:34,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:34,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-05-02 18:53:34,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 18:53:34,951 INFO L87 Difference]: Start difference. First operand 168 states and 187 transitions. Second operand has 64 states, 64 states have (on average 2.109375) internal successors, (135), 63 states have internal predecessors, (135), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:53:37,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:37,927 INFO L93 Difference]: Finished difference Result 170 states and 189 transitions. [2021-05-02 18:53:37,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-02 18:53:37,927 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.109375) internal successors, (135), 63 states have internal predecessors, (135), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 167 [2021-05-02 18:53:37,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:37,928 INFO L225 Difference]: With dead ends: 170 [2021-05-02 18:53:37,928 INFO L226 Difference]: Without dead ends: 170 [2021-05-02 18:53:37,928 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2003 ImplicationChecksByTransitivity, 4037.3ms TimeCoverageRelationStatistics Valid=5736, Invalid=9516, Unknown=0, NotChecked=0, Total=15252 [2021-05-02 18:53:37,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-05-02 18:53:37,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-05-02 18:53:37,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 165 states have (on average 1.121212121212121) internal successors, (185), 165 states have internal predecessors, (185), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:53:37,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 189 transitions. [2021-05-02 18:53:37,930 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 189 transitions. Word has length 167 [2021-05-02 18:53:37,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:37,930 INFO L480 AbstractCegarLoop]: Abstraction has 170 states and 189 transitions. [2021-05-02 18:53:37,930 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 64 states, 64 states have (on average 2.109375) internal successors, (135), 63 states have internal predecessors, (135), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:53:37,930 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 189 transitions. [2021-05-02 18:53:37,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-05-02 18:53:37,931 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:37,931 INFO L523 BasicCegarLoop]: trace histogram [78, 60, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:38,146 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:53:38,146 INFO L428 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:38,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:38,146 INFO L82 PathProgramCache]: Analyzing trace with hash -878096639, now seen corresponding path program 57 times [2021-05-02 18:53:38,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:38,147 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530546571] [2021-05-02 18:53:38,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:38,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:39,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:39,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:39,618 INFO L134 CoverageAnalysis]: Checked inductivity of 6085 backedges. 2135 proven. 3660 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-05-02 18:53:39,618 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:39,618 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530546571] [2021-05-02 18:53:39,618 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530546571] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:39,618 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900486010] [2021-05-02 18:53:39,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:53:39,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 38 check-sat command(s) [2021-05-02 18:53:39,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:53:39,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 18:53:39,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:39,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:39,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:40,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:40,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:40,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:40,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:40,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:40,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:40,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:40,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:40,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:40,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:40,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:40,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:40,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:40,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:40,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:40,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:40,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:40,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:40,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:40,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:40,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:40,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:40,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:40,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:40,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:40,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:40,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:40,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:40,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:40,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:40,926 INFO L134 CoverageAnalysis]: Checked inductivity of 6085 backedges. 2220 proven. 324 refuted. 0 times theorem prover too weak. 3541 trivial. 0 not checked. [2021-05-02 18:53:40,926 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900486010] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:40,926 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:40,926 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 21] total 83 [2021-05-02 18:53:40,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340864518] [2021-05-02 18:53:40,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 83 states [2021-05-02 18:53:40,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:40,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-05-02 18:53:40,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806 [2021-05-02 18:53:40,927 INFO L87 Difference]: Start difference. First operand 170 states and 189 transitions. Second operand has 83 states, 83 states have (on average 2.108433734939759) internal successors, (175), 82 states have internal predecessors, (175), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:53:45,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:45,660 INFO L93 Difference]: Finished difference Result 175 states and 196 transitions. [2021-05-02 18:53:45,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-05-02 18:53:45,661 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.108433734939759) internal successors, (175), 82 states have internal predecessors, (175), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 169 [2021-05-02 18:53:45,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:45,661 INFO L225 Difference]: With dead ends: 175 [2021-05-02 18:53:45,661 INFO L226 Difference]: Without dead ends: 175 [2021-05-02 18:53:45,662 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3220 ImplicationChecksByTransitivity, 6743.6ms TimeCoverageRelationStatistics Valid=9963, Invalid=16443, Unknown=0, NotChecked=0, Total=26406 [2021-05-02 18:53:45,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-05-02 18:53:45,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2021-05-02 18:53:45,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 169 states have (on average 1.1242603550295858) internal successors, (190), 169 states have internal predecessors, (190), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:53:45,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 194 transitions. [2021-05-02 18:53:45,664 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 194 transitions. Word has length 169 [2021-05-02 18:53:45,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:45,664 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 194 transitions. [2021-05-02 18:53:45,664 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 83 states, 83 states have (on average 2.108433734939759) internal successors, (175), 82 states have internal predecessors, (175), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:53:45,664 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 194 transitions. [2021-05-02 18:53:45,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-05-02 18:53:45,665 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:45,665 INFO L523 BasicCegarLoop]: trace histogram [80, 61, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:45,872 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2021-05-02 18:53:45,873 INFO L428 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:45,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:45,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1939363864, now seen corresponding path program 58 times [2021-05-02 18:53:45,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:45,873 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980496860] [2021-05-02 18:53:45,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:45,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:47,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:47,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:47,433 INFO L134 CoverageAnalysis]: Checked inductivity of 6401 backedges. 2294 proven. 3782 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-05-02 18:53:47,433 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:47,433 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980496860] [2021-05-02 18:53:47,434 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980496860] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:47,434 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783284735] [2021-05-02 18:53:47,434 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:53:47,508 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:53:47,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:53:47,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 63 conjunts are in the unsatisfiable core [2021-05-02 18:53:47,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:47,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:47,792 INFO L134 CoverageAnalysis]: Checked inductivity of 6401 backedges. 2294 proven. 3782 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-05-02 18:53:47,792 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783284735] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:47,792 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:47,792 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64] total 66 [2021-05-02 18:53:47,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156077992] [2021-05-02 18:53:47,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2021-05-02 18:53:47,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:47,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-05-02 18:53:47,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2021-05-02 18:53:47,794 INFO L87 Difference]: Start difference. First operand 174 states and 194 transitions. Second operand has 66 states, 66 states have (on average 2.106060606060606) internal successors, (139), 65 states have internal predecessors, (139), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:53:50,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:50,973 INFO L93 Difference]: Finished difference Result 176 states and 196 transitions. [2021-05-02 18:53:50,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-05-02 18:53:50,973 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.106060606060606) internal successors, (139), 65 states have internal predecessors, (139), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 173 [2021-05-02 18:53:50,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:50,974 INFO L225 Difference]: With dead ends: 176 [2021-05-02 18:53:50,974 INFO L226 Difference]: Without dead ends: 176 [2021-05-02 18:53:50,975 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2132 ImplicationChecksByTransitivity, 4321.9ms TimeCoverageRelationStatistics Valid=6113, Invalid=10143, Unknown=0, NotChecked=0, Total=16256 [2021-05-02 18:53:50,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-05-02 18:53:50,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2021-05-02 18:53:50,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 171 states have (on average 1.1228070175438596) internal successors, (192), 171 states have internal predecessors, (192), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:53:50,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 196 transitions. [2021-05-02 18:53:50,976 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 196 transitions. Word has length 173 [2021-05-02 18:53:50,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:50,976 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 196 transitions. [2021-05-02 18:53:50,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 66 states, 66 states have (on average 2.106060606060606) internal successors, (139), 65 states have internal predecessors, (139), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:53:50,977 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 196 transitions. [2021-05-02 18:53:50,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-05-02 18:53:50,977 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:50,977 INFO L523 BasicCegarLoop]: trace histogram [81, 62, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:51,192 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:53:51,193 INFO L428 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:51,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:51,193 INFO L82 PathProgramCache]: Analyzing trace with hash -179679884, now seen corresponding path program 59 times [2021-05-02 18:53:51,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:51,194 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062673392] [2021-05-02 18:53:51,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:52,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:52,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:52,797 INFO L134 CoverageAnalysis]: Checked inductivity of 6562 backedges. 2331 proven. 3906 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-05-02 18:53:52,797 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:52,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062673392] [2021-05-02 18:53:52,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062673392] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:52,798 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520257310] [2021-05-02 18:53:52,798 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:53:52,889 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 82 check-sat command(s) [2021-05-02 18:53:52,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:53:52,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 64 conjunts are in the unsatisfiable core [2021-05-02 18:53:52,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:52,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:53,219 INFO L134 CoverageAnalysis]: Checked inductivity of 6562 backedges. 2331 proven. 3906 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-05-02 18:53:53,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520257310] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:53,219 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:53,219 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 65] total 67 [2021-05-02 18:53:53,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848598164] [2021-05-02 18:53:53,220 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-05-02 18:53:53,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:53,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-05-02 18:53:53,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2021-05-02 18:53:53,221 INFO L87 Difference]: Start difference. First operand 176 states and 196 transitions. Second operand has 67 states, 67 states have (on average 2.1044776119402986) internal successors, (141), 66 states have internal predecessors, (141), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:53:56,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:56,503 INFO L93 Difference]: Finished difference Result 178 states and 198 transitions. [2021-05-02 18:53:56,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-02 18:53:56,504 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.1044776119402986) internal successors, (141), 66 states have internal predecessors, (141), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 175 [2021-05-02 18:53:56,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:56,504 INFO L225 Difference]: With dead ends: 178 [2021-05-02 18:53:56,505 INFO L226 Difference]: Without dead ends: 178 [2021-05-02 18:53:56,505 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2198 ImplicationChecksByTransitivity, 4467.0ms TimeCoverageRelationStatistics Valid=6306, Invalid=10464, Unknown=0, NotChecked=0, Total=16770 [2021-05-02 18:53:56,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-05-02 18:53:56,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2021-05-02 18:53:56,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 173 states have (on average 1.1213872832369942) internal successors, (194), 173 states have internal predecessors, (194), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:53:56,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 198 transitions. [2021-05-02 18:53:56,507 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 198 transitions. Word has length 175 [2021-05-02 18:53:56,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:56,507 INFO L480 AbstractCegarLoop]: Abstraction has 178 states and 198 transitions. [2021-05-02 18:53:56,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 67 states, 67 states have (on average 2.1044776119402986) internal successors, (141), 66 states have internal predecessors, (141), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:53:56,507 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 198 transitions. [2021-05-02 18:53:56,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-05-02 18:53:56,508 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:56,508 INFO L523 BasicCegarLoop]: trace histogram [82, 63, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:56,728 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2021-05-02 18:53:56,729 INFO L428 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:56,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:56,729 INFO L82 PathProgramCache]: Analyzing trace with hash -766223408, now seen corresponding path program 60 times [2021-05-02 18:53:56,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:56,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184760402] [2021-05-02 18:53:56,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:58,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:58,374 INFO L134 CoverageAnalysis]: Checked inductivity of 6725 backedges. 2368 proven. 4032 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-05-02 18:53:58,374 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:58,374 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184760402] [2021-05-02 18:53:58,374 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184760402] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:58,374 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171166467] [2021-05-02 18:53:58,374 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:53:58,557 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2021-05-02 18:53:58,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:53:58,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-02 18:53:58,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:58,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:58,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:58,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:58,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:58,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:58,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:58,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:58,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:58,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:58,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:58,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:58,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:59,913 INFO L134 CoverageAnalysis]: Checked inductivity of 6725 backedges. 2457 proven. 361 refuted. 0 times theorem prover too weak. 3907 trivial. 0 not checked. [2021-05-02 18:53:59,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171166467] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:59,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:59,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 22] total 87 [2021-05-02 18:53:59,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208873696] [2021-05-02 18:53:59,914 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2021-05-02 18:53:59,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:59,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-05-02 18:53:59,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2021-05-02 18:53:59,915 INFO L87 Difference]: Start difference. First operand 178 states and 198 transitions. Second operand has 87 states, 87 states have (on average 2.103448275862069) internal successors, (183), 86 states have internal predecessors, (183), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:54:04,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:54:04,978 INFO L93 Difference]: Finished difference Result 183 states and 205 transitions. [2021-05-02 18:54:04,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-02 18:54:04,978 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.103448275862069) internal successors, (183), 86 states have internal predecessors, (183), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 177 [2021-05-02 18:54:04,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:54:04,979 INFO L225 Difference]: With dead ends: 183 [2021-05-02 18:54:04,979 INFO L226 Difference]: Without dead ends: 183 [2021-05-02 18:54:04,980 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3549 ImplicationChecksByTransitivity, 7365.1ms TimeCoverageRelationStatistics Valid=10965, Invalid=18105, Unknown=0, NotChecked=0, Total=29070 [2021-05-02 18:54:04,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-05-02 18:54:04,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 182. [2021-05-02 18:54:04,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 177 states have (on average 1.1242937853107344) internal successors, (199), 177 states have internal predecessors, (199), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:54:04,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 203 transitions. [2021-05-02 18:54:04,982 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 203 transitions. Word has length 177 [2021-05-02 18:54:04,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:54:04,983 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 203 transitions. [2021-05-02 18:54:04,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 87 states, 87 states have (on average 2.103448275862069) internal successors, (183), 86 states have internal predecessors, (183), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:54:04,983 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 203 transitions. [2021-05-02 18:54:04,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-05-02 18:54:04,983 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:54:04,983 INFO L523 BasicCegarLoop]: trace histogram [84, 64, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:54:05,184 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:54:05,184 INFO L428 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:54:05,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:54:05,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1626296615, now seen corresponding path program 61 times [2021-05-02 18:54:05,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:54:05,184 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866559229] [2021-05-02 18:54:05,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:54:05,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:06,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:54:06,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:06,905 INFO L134 CoverageAnalysis]: Checked inductivity of 7057 backedges. 2535 proven. 4160 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2021-05-02 18:54:06,905 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:54:06,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866559229] [2021-05-02 18:54:06,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866559229] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:06,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847676968] [2021-05-02 18:54:06,905 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:54:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:06,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 66 conjunts are in the unsatisfiable core [2021-05-02 18:54:06,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:54:06,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:06,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:06,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:06,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:06,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:06,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,283 INFO L134 CoverageAnalysis]: Checked inductivity of 7057 backedges. 2535 proven. 4160 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2021-05-02 18:54:07,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847676968] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:07,284 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:54:07,284 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 67] total 69 [2021-05-02 18:54:07,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783828499] [2021-05-02 18:54:07,284 INFO L460 AbstractCegarLoop]: Interpolant automaton has 69 states [2021-05-02 18:54:07,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:54:07,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-05-02 18:54:07,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2021-05-02 18:54:07,285 INFO L87 Difference]: Start difference. First operand 182 states and 203 transitions. Second operand has 69 states, 69 states have (on average 2.101449275362319) internal successors, (145), 68 states have internal predecessors, (145), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:54:10,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:54:10,616 INFO L93 Difference]: Finished difference Result 184 states and 205 transitions. [2021-05-02 18:54:10,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-05-02 18:54:10,616 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.101449275362319) internal successors, (145), 68 states have internal predecessors, (145), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 181 [2021-05-02 18:54:10,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:54:10,617 INFO L225 Difference]: With dead ends: 184 [2021-05-02 18:54:10,617 INFO L226 Difference]: Without dead ends: 184 [2021-05-02 18:54:10,618 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2333 ImplicationChecksByTransitivity, 4672.7ms TimeCoverageRelationStatistics Valid=6701, Invalid=11121, Unknown=0, NotChecked=0, Total=17822 [2021-05-02 18:54:10,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-05-02 18:54:10,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2021-05-02 18:54:10,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 179 states have (on average 1.1229050279329609) internal successors, (201), 179 states have internal predecessors, (201), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:54:10,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 205 transitions. [2021-05-02 18:54:10,619 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 205 transitions. Word has length 181 [2021-05-02 18:54:10,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:54:10,619 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 205 transitions. [2021-05-02 18:54:10,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 69 states, 69 states have (on average 2.101449275362319) internal successors, (145), 68 states have internal predecessors, (145), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:54:10,620 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 205 transitions. [2021-05-02 18:54:10,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-05-02 18:54:10,620 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:54:10,620 INFO L523 BasicCegarLoop]: trace histogram [85, 65, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:54:10,835 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-05-02 18:54:10,835 INFO L428 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:54:10,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:54:10,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1752443523, now seen corresponding path program 62 times [2021-05-02 18:54:10,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:54:10,835 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892654566] [2021-05-02 18:54:10,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:54:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:12,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:54:12,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:12,586 INFO L134 CoverageAnalysis]: Checked inductivity of 7226 backedges. 2574 proven. 4290 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2021-05-02 18:54:12,586 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:54:12,586 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892654566] [2021-05-02 18:54:12,587 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892654566] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:12,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397556995] [2021-05-02 18:54:12,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:54:12,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:54:12,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:54:12,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 67 conjunts are in the unsatisfiable core [2021-05-02 18:54:12,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:54:12,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,961 INFO L134 CoverageAnalysis]: Checked inductivity of 7226 backedges. 2574 proven. 4290 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2021-05-02 18:54:12,962 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397556995] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:12,962 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:54:12,962 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 68] total 70 [2021-05-02 18:54:12,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761733685] [2021-05-02 18:54:12,962 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states [2021-05-02 18:54:12,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:54:12,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-05-02 18:54:12,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2021-05-02 18:54:12,963 INFO L87 Difference]: Start difference. First operand 184 states and 205 transitions. Second operand has 70 states, 70 states have (on average 2.1) internal successors, (147), 69 states have internal predecessors, (147), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:54:16,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:54:16,398 INFO L93 Difference]: Finished difference Result 186 states and 207 transitions. [2021-05-02 18:54:16,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-02 18:54:16,398 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.1) internal successors, (147), 69 states have internal predecessors, (147), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 183 [2021-05-02 18:54:16,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:54:16,399 INFO L225 Difference]: With dead ends: 186 [2021-05-02 18:54:16,399 INFO L226 Difference]: Without dead ends: 186 [2021-05-02 18:54:16,399 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2402 ImplicationChecksByTransitivity, 4903.9ms TimeCoverageRelationStatistics Valid=6903, Invalid=11457, Unknown=0, NotChecked=0, Total=18360 [2021-05-02 18:54:16,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-05-02 18:54:16,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2021-05-02 18:54:16,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 181 states have (on average 1.1215469613259668) internal successors, (203), 181 states have internal predecessors, (203), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:54:16,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 207 transitions. [2021-05-02 18:54:16,403 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 207 transitions. Word has length 183 [2021-05-02 18:54:16,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:54:16,403 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 207 transitions. [2021-05-02 18:54:16,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 70 states, 70 states have (on average 2.1) internal successors, (147), 69 states have internal predecessors, (147), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:54:16,403 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 207 transitions. [2021-05-02 18:54:16,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-05-02 18:54:16,403 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:54:16,403 INFO L523 BasicCegarLoop]: trace histogram [86, 66, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:54:16,618 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:54:16,619 INFO L428 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:54:16,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:54:16,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1574429473, now seen corresponding path program 63 times [2021-05-02 18:54:16,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:54:16,619 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837037379] [2021-05-02 18:54:16,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:54:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:18,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:54:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:18,439 INFO L134 CoverageAnalysis]: Checked inductivity of 7397 backedges. 2613 proven. 4422 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2021-05-02 18:54:18,439 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:54:18,439 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837037379] [2021-05-02 18:54:18,439 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837037379] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:18,439 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060975825] [2021-05-02 18:54:18,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:54:18,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2021-05-02 18:54:18,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:54:18,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-02 18:54:18,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:54:18,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:18,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:18,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:18,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:18,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:18,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:18,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:18,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:18,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:18,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:18,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:18,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:19,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:19,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:19,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:19,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:19,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:19,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:19,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:19,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:19,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:19,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:19,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:19,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:19,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:19,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:19,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:19,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:19,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:19,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:19,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:19,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:19,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:19,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:19,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:19,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:19,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:19,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:19,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:19,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:19,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:19,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:20,022 INFO L134 CoverageAnalysis]: Checked inductivity of 7397 backedges. 2706 proven. 400 refuted. 0 times theorem prover too weak. 4291 trivial. 0 not checked. [2021-05-02 18:54:20,023 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060975825] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:20,023 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:54:20,023 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 23] total 91 [2021-05-02 18:54:20,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314125517] [2021-05-02 18:54:20,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 91 states [2021-05-02 18:54:20,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:54:20,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-05-02 18:54:20,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2021-05-02 18:54:20,024 INFO L87 Difference]: Start difference. First operand 186 states and 207 transitions. Second operand has 91 states, 91 states have (on average 2.098901098901099) internal successors, (191), 90 states have internal predecessors, (191), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:54:25,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:54:25,541 INFO L93 Difference]: Finished difference Result 191 states and 214 transitions. [2021-05-02 18:54:25,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-05-02 18:54:25,541 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.098901098901099) internal successors, (191), 90 states have internal predecessors, (191), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 185 [2021-05-02 18:54:25,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:54:25,542 INFO L225 Difference]: With dead ends: 191 [2021-05-02 18:54:25,542 INFO L226 Difference]: Without dead ends: 191 [2021-05-02 18:54:25,543 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3894 ImplicationChecksByTransitivity, 8107.1ms TimeCoverageRelationStatistics Valid=12015, Invalid=19847, Unknown=0, NotChecked=0, Total=31862 [2021-05-02 18:54:25,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-05-02 18:54:25,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 190. [2021-05-02 18:54:25,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 185 states have (on average 1.1243243243243244) internal successors, (208), 185 states have internal predecessors, (208), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:54:25,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 212 transitions. [2021-05-02 18:54:25,546 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 212 transitions. Word has length 185 [2021-05-02 18:54:25,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:54:25,546 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 212 transitions. [2021-05-02 18:54:25,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 91 states, 91 states have (on average 2.098901098901099) internal successors, (191), 90 states have internal predecessors, (191), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:54:25,546 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 212 transitions. [2021-05-02 18:54:25,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-05-02 18:54:25,547 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:54:25,547 INFO L523 BasicCegarLoop]: trace histogram [88, 67, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:54:25,760 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-05-02 18:54:25,761 INFO L428 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:54:25,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:54:25,761 INFO L82 PathProgramCache]: Analyzing trace with hash -135336330, now seen corresponding path program 64 times [2021-05-02 18:54:25,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:54:25,761 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140330358] [2021-05-02 18:54:25,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:54:25,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:27,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:54:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:27,646 INFO L134 CoverageAnalysis]: Checked inductivity of 7745 backedges. 2788 proven. 4556 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2021-05-02 18:54:27,646 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:54:27,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140330358] [2021-05-02 18:54:27,646 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140330358] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:27,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363416073] [2021-05-02 18:54:27,646 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:54:27,714 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:54:27,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:54:27,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 69 conjunts are in the unsatisfiable core [2021-05-02 18:54:27,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:54:27,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:27,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:28,024 INFO L134 CoverageAnalysis]: Checked inductivity of 7745 backedges. 2788 proven. 4556 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2021-05-02 18:54:28,025 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363416073] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:28,025 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:54:28,025 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 70] total 72 [2021-05-02 18:54:28,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188932950] [2021-05-02 18:54:28,025 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states [2021-05-02 18:54:28,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:54:28,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-05-02 18:54:28,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112 [2021-05-02 18:54:28,026 INFO L87 Difference]: Start difference. First operand 190 states and 212 transitions. Second operand has 72 states, 72 states have (on average 2.0972222222222223) internal successors, (151), 71 states have internal predecessors, (151), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:54:31,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:54:31,631 INFO L93 Difference]: Finished difference Result 192 states and 214 transitions. [2021-05-02 18:54:31,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-02 18:54:31,632 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.0972222222222223) internal successors, (151), 71 states have internal predecessors, (151), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 189 [2021-05-02 18:54:31,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:54:31,632 INFO L225 Difference]: With dead ends: 192 [2021-05-02 18:54:31,633 INFO L226 Difference]: Without dead ends: 192 [2021-05-02 18:54:31,633 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2543 ImplicationChecksByTransitivity, 5076.4ms TimeCoverageRelationStatistics Valid=7316, Invalid=12144, Unknown=0, NotChecked=0, Total=19460 [2021-05-02 18:54:31,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-05-02 18:54:31,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2021-05-02 18:54:31,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 187 states have (on average 1.1229946524064172) internal successors, (210), 187 states have internal predecessors, (210), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:54:31,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 214 transitions. [2021-05-02 18:54:31,635 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 214 transitions. Word has length 189 [2021-05-02 18:54:31,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:54:31,635 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 214 transitions. [2021-05-02 18:54:31,635 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 72 states, 72 states have (on average 2.0972222222222223) internal successors, (151), 71 states have internal predecessors, (151), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:54:31,635 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 214 transitions. [2021-05-02 18:54:31,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-05-02 18:54:31,636 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:54:31,636 INFO L523 BasicCegarLoop]: trace histogram [89, 68, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:54:31,836 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-05-02 18:54:31,836 INFO L428 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:54:31,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:54:31,837 INFO L82 PathProgramCache]: Analyzing trace with hash -2044548142, now seen corresponding path program 65 times [2021-05-02 18:54:31,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:54:31,837 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697743393] [2021-05-02 18:54:31,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:54:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:33,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:54:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:33,786 INFO L134 CoverageAnalysis]: Checked inductivity of 7922 backedges. 2829 proven. 4692 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2021-05-02 18:54:33,786 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:54:33,786 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697743393] [2021-05-02 18:54:33,786 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697743393] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:33,786 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179986841] [2021-05-02 18:54:33,786 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:54:33,904 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 90 check-sat command(s) [2021-05-02 18:54:33,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:54:33,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 70 conjunts are in the unsatisfiable core [2021-05-02 18:54:33,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:54:33,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:33,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:33,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:33,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:33,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:33,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:33,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:33,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:33,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:33,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:33,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:33,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:33,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:33,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:33,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:33,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:33,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:33,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:33,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:33,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:33,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:33,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:33,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:33,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:33,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:33,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:33,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:33,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:33,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:33,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:33,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:33,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:33,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:33,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:33,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:33,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:33,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:33,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,254 INFO L134 CoverageAnalysis]: Checked inductivity of 7922 backedges. 2829 proven. 4692 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2021-05-02 18:54:34,255 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179986841] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:34,255 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:54:34,255 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71] total 73 [2021-05-02 18:54:34,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51075854] [2021-05-02 18:54:34,255 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2021-05-02 18:54:34,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:54:34,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-05-02 18:54:34,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2021-05-02 18:54:34,256 INFO L87 Difference]: Start difference. First operand 192 states and 214 transitions. Second operand has 73 states, 73 states have (on average 2.095890410958904) internal successors, (153), 72 states have internal predecessors, (153), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:54:38,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:54:38,115 INFO L93 Difference]: Finished difference Result 194 states and 216 transitions. [2021-05-02 18:54:38,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-05-02 18:54:38,115 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.095890410958904) internal successors, (153), 72 states have internal predecessors, (153), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 191 [2021-05-02 18:54:38,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:54:38,116 INFO L225 Difference]: With dead ends: 194 [2021-05-02 18:54:38,116 INFO L226 Difference]: Without dead ends: 194 [2021-05-02 18:54:38,116 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2615 ImplicationChecksByTransitivity, 5349.0ms TimeCoverageRelationStatistics Valid=7527, Invalid=12495, Unknown=0, NotChecked=0, Total=20022 [2021-05-02 18:54:38,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-05-02 18:54:38,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2021-05-02 18:54:38,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 189 states have (on average 1.1216931216931216) internal successors, (212), 189 states have internal predecessors, (212), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:54:38,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 216 transitions. [2021-05-02 18:54:38,118 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 216 transitions. Word has length 191 [2021-05-02 18:54:38,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:54:38,118 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 216 transitions. [2021-05-02 18:54:38,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 73 states, 73 states have (on average 2.095890410958904) internal successors, (153), 72 states have internal predecessors, (153), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:54:38,118 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 216 transitions. [2021-05-02 18:54:38,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-05-02 18:54:38,119 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:54:38,119 INFO L523 BasicCegarLoop]: trace histogram [90, 69, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:54:38,319 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-05-02 18:54:38,320 INFO L428 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:54:38,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:54:38,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1448903214, now seen corresponding path program 66 times [2021-05-02 18:54:38,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:54:38,320 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048337683] [2021-05-02 18:54:38,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:54:38,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:40,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:54:40,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:40,345 INFO L134 CoverageAnalysis]: Checked inductivity of 8101 backedges. 2870 proven. 4830 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2021-05-02 18:54:40,346 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:54:40,346 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048337683] [2021-05-02 18:54:40,346 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048337683] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:40,346 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062951394] [2021-05-02 18:54:40,346 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:54:40,549 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 87 check-sat command(s) [2021-05-02 18:54:40,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:54:40,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 24 conjunts are in the unsatisfiable core [2021-05-02 18:54:40,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:54:40,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:40,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:40,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:40,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:40,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:40,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:40,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:40,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:40,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:40,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:41,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:41,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:41,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:41,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:41,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:41,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:41,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:41,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:41,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:41,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:41,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:41,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:41,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:41,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:41,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:41,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:41,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:41,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:41,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:41,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:41,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:41,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:41,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:41,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:41,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:41,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:41,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:41,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:41,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:41,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,218 INFO L134 CoverageAnalysis]: Checked inductivity of 8101 backedges. 2967 proven. 441 refuted. 0 times theorem prover too weak. 4693 trivial. 0 not checked. [2021-05-02 18:54:42,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062951394] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:42,218 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:54:42,218 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 24] total 95 [2021-05-02 18:54:42,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703469355] [2021-05-02 18:54:42,218 INFO L460 AbstractCegarLoop]: Interpolant automaton has 95 states [2021-05-02 18:54:42,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:54:42,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2021-05-02 18:54:42,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930 [2021-05-02 18:54:42,219 INFO L87 Difference]: Start difference. First operand 194 states and 216 transitions. Second operand has 95 states, 95 states have (on average 2.094736842105263) internal successors, (199), 94 states have internal predecessors, (199), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:54:48,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:54:48,228 INFO L93 Difference]: Finished difference Result 199 states and 223 transitions. [2021-05-02 18:54:48,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-05-02 18:54:48,228 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.094736842105263) internal successors, (199), 94 states have internal predecessors, (199), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 193 [2021-05-02 18:54:48,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:54:48,229 INFO L225 Difference]: With dead ends: 199 [2021-05-02 18:54:48,229 INFO L226 Difference]: Without dead ends: 199 [2021-05-02 18:54:48,230 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4255 ImplicationChecksByTransitivity, 8902.7ms TimeCoverageRelationStatistics Valid=13113, Invalid=21669, Unknown=0, NotChecked=0, Total=34782 [2021-05-02 18:54:48,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-05-02 18:54:48,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198. [2021-05-02 18:54:48,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 193 states have (on average 1.1243523316062176) internal successors, (217), 193 states have internal predecessors, (217), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:54:48,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 221 transitions. [2021-05-02 18:54:48,232 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 221 transitions. Word has length 193 [2021-05-02 18:54:48,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:54:48,232 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 221 transitions. [2021-05-02 18:54:48,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 95 states, 95 states have (on average 2.094736842105263) internal successors, (199), 94 states have internal predecessors, (199), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:54:48,232 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 221 transitions. [2021-05-02 18:54:48,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-05-02 18:54:48,232 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:54:48,233 INFO L523 BasicCegarLoop]: trace histogram [92, 70, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:54:48,448 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:54:48,449 INFO L428 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:54:48,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:54:48,449 INFO L82 PathProgramCache]: Analyzing trace with hash -913104891, now seen corresponding path program 67 times [2021-05-02 18:54:48,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:54:48,449 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520720378] [2021-05-02 18:54:48,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:54:48,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:50,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:54:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:50,520 INFO L134 CoverageAnalysis]: Checked inductivity of 8465 backedges. 3053 proven. 4970 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-05-02 18:54:50,520 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:54:50,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520720378] [2021-05-02 18:54:50,520 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520720378] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:50,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699412198] [2021-05-02 18:54:50,520 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:54:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:50,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 72 conjunts are in the unsatisfiable core [2021-05-02 18:54:50,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:54:50,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:50,927 INFO L134 CoverageAnalysis]: Checked inductivity of 8465 backedges. 3053 proven. 4970 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-05-02 18:54:50,927 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699412198] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:50,927 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:54:50,927 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 73] total 75 [2021-05-02 18:54:50,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980957698] [2021-05-02 18:54:50,927 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-05-02 18:54:50,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:54:50,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-05-02 18:54:50,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2021-05-02 18:54:50,928 INFO L87 Difference]: Start difference. First operand 198 states and 221 transitions. Second operand has 75 states, 75 states have (on average 2.0933333333333333) internal successors, (157), 74 states have internal predecessors, (157), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:54:54,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:54:54,929 INFO L93 Difference]: Finished difference Result 200 states and 223 transitions. [2021-05-02 18:54:54,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-05-02 18:54:54,929 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.0933333333333333) internal successors, (157), 74 states have internal predecessors, (157), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 197 [2021-05-02 18:54:54,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:54:54,930 INFO L225 Difference]: With dead ends: 200 [2021-05-02 18:54:54,930 INFO L226 Difference]: Without dead ends: 200 [2021-05-02 18:54:54,931 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2762 ImplicationChecksByTransitivity, 5591.7ms TimeCoverageRelationStatistics Valid=7958, Invalid=13212, Unknown=0, NotChecked=0, Total=21170 [2021-05-02 18:54:54,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-05-02 18:54:54,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2021-05-02 18:54:54,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 195 states have (on average 1.123076923076923) internal successors, (219), 195 states have internal predecessors, (219), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:54:54,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 223 transitions. [2021-05-02 18:54:54,932 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 223 transitions. Word has length 197 [2021-05-02 18:54:54,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:54:54,933 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 223 transitions. [2021-05-02 18:54:54,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 75 states, 75 states have (on average 2.0933333333333333) internal successors, (157), 74 states have internal predecessors, (157), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:54:54,933 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 223 transitions. [2021-05-02 18:54:54,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-05-02 18:54:54,933 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:54:54,933 INFO L523 BasicCegarLoop]: trace histogram [93, 71, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:54:55,134 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:54:55,134 INFO L428 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:54:55,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:54:55,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1129431393, now seen corresponding path program 68 times [2021-05-02 18:54:55,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:54:55,134 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507268747] [2021-05-02 18:54:55,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:54:55,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:57,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:54:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:57,240 INFO L134 CoverageAnalysis]: Checked inductivity of 8650 backedges. 3096 proven. 5112 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-05-02 18:54:57,240 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:54:57,240 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507268747] [2021-05-02 18:54:57,240 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507268747] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:57,240 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574977353] [2021-05-02 18:54:57,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:54:57,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:54:57,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:54:57,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 73 conjunts are in the unsatisfiable core [2021-05-02 18:54:57,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:54:57,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:57,656 INFO L134 CoverageAnalysis]: Checked inductivity of 8650 backedges. 3096 proven. 5112 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-05-02 18:54:57,657 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574977353] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:57,657 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:54:57,657 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 74] total 76 [2021-05-02 18:54:57,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824432180] [2021-05-02 18:54:57,657 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-05-02 18:54:57,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:54:57,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-05-02 18:54:57,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 18:54:57,658 INFO L87 Difference]: Start difference. First operand 200 states and 223 transitions. Second operand has 76 states, 76 states have (on average 2.0921052631578947) internal successors, (159), 75 states have internal predecessors, (159), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:55:01,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:55:01,537 INFO L93 Difference]: Finished difference Result 202 states and 225 transitions. [2021-05-02 18:55:01,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-02 18:55:01,538 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.0921052631578947) internal successors, (159), 75 states have internal predecessors, (159), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 199 [2021-05-02 18:55:01,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:55:01,538 INFO L225 Difference]: With dead ends: 202 [2021-05-02 18:55:01,538 INFO L226 Difference]: Without dead ends: 202 [2021-05-02 18:55:01,539 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2837 ImplicationChecksByTransitivity, 5684.9ms TimeCoverageRelationStatistics Valid=8178, Invalid=13578, Unknown=0, NotChecked=0, Total=21756 [2021-05-02 18:55:01,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-05-02 18:55:01,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2021-05-02 18:55:01,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 197 states have (on average 1.1218274111675126) internal successors, (221), 197 states have internal predecessors, (221), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:55:01,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 225 transitions. [2021-05-02 18:55:01,541 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 225 transitions. Word has length 199 [2021-05-02 18:55:01,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:55:01,541 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 225 transitions. [2021-05-02 18:55:01,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 76 states, 76 states have (on average 2.0921052631578947) internal successors, (159), 75 states have internal predecessors, (159), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:55:01,541 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 225 transitions. [2021-05-02 18:55:01,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-05-02 18:55:01,542 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:55:01,542 INFO L523 BasicCegarLoop]: trace histogram [94, 72, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:55:01,756 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:55:01,757 INFO L428 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:55:01,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:55:01,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1206746045, now seen corresponding path program 69 times [2021-05-02 18:55:01,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:55:01,757 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009941218] [2021-05-02 18:55:01,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:55:01,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:04,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:55:04,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:04,066 INFO L134 CoverageAnalysis]: Checked inductivity of 8837 backedges. 3139 proven. 5256 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-05-02 18:55:04,066 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:55:04,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009941218] [2021-05-02 18:55:04,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009941218] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:04,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800015018] [2021-05-02 18:55:04,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:55:04,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-05-02 18:55:04,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:55:04,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-02 18:55:04,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:55:04,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:04,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:04,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:04,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:04,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:04,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:04,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:04,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:04,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:04,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:04,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:04,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:04,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:04,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:04,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:04,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:04,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:04,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:05,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:06,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:06,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:06,140 INFO L134 CoverageAnalysis]: Checked inductivity of 8837 backedges. 3240 proven. 484 refuted. 0 times theorem prover too weak. 5113 trivial. 0 not checked. [2021-05-02 18:55:06,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800015018] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:06,140 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:55:06,140 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 25] total 99 [2021-05-02 18:55:06,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130589791] [2021-05-02 18:55:06,140 INFO L460 AbstractCegarLoop]: Interpolant automaton has 99 states [2021-05-02 18:55:06,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:55:06,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-05-02 18:55:06,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2021-05-02 18:55:06,141 INFO L87 Difference]: Start difference. First operand 202 states and 225 transitions. Second operand has 99 states, 99 states have (on average 2.090909090909091) internal successors, (207), 98 states have internal predecessors, (207), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:55:13,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:55:13,037 INFO L93 Difference]: Finished difference Result 207 states and 232 transitions. [2021-05-02 18:55:13,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-05-02 18:55:13,038 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.090909090909091) internal successors, (207), 98 states have internal predecessors, (207), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 201 [2021-05-02 18:55:13,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:55:13,039 INFO L225 Difference]: With dead ends: 207 [2021-05-02 18:55:13,039 INFO L226 Difference]: Without dead ends: 207 [2021-05-02 18:55:13,040 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4632 ImplicationChecksByTransitivity, 10226.9ms TimeCoverageRelationStatistics Valid=14259, Invalid=23571, Unknown=0, NotChecked=0, Total=37830 [2021-05-02 18:55:13,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-05-02 18:55:13,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 206. [2021-05-02 18:55:13,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 201 states have (on average 1.1243781094527363) internal successors, (226), 201 states have internal predecessors, (226), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:55:13,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 230 transitions. [2021-05-02 18:55:13,042 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 230 transitions. Word has length 201 [2021-05-02 18:55:13,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:55:13,042 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 230 transitions. [2021-05-02 18:55:13,042 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 99 states, 99 states have (on average 2.090909090909091) internal successors, (207), 98 states have internal predecessors, (207), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:55:13,042 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 230 transitions. [2021-05-02 18:55:13,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-05-02 18:55:13,043 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:55:13,043 INFO L523 BasicCegarLoop]: trace histogram [96, 73, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:55:13,258 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2021-05-02 18:55:13,258 INFO L428 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:55:13,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:55:13,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1134286292, now seen corresponding path program 70 times [2021-05-02 18:55:13,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:55:13,259 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330515115] [2021-05-02 18:55:13,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:55:13,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:15,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:55:15,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:15,598 INFO L134 CoverageAnalysis]: Checked inductivity of 9217 backedges. 3330 proven. 5402 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2021-05-02 18:55:15,598 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:55:15,599 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330515115] [2021-05-02 18:55:15,599 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330515115] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:15,599 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747118356] [2021-05-02 18:55:15,599 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:55:15,689 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:55:15,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:55:15,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 75 conjunts are in the unsatisfiable core [2021-05-02 18:55:15,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:55:15,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:16,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:16,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:16,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:16,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:16,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:16,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:16,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:16,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:16,073 INFO L134 CoverageAnalysis]: Checked inductivity of 9217 backedges. 3330 proven. 5402 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2021-05-02 18:55:16,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747118356] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:16,073 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:55:16,073 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 76] total 78 [2021-05-02 18:55:16,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672118437] [2021-05-02 18:55:16,074 INFO L460 AbstractCegarLoop]: Interpolant automaton has 78 states [2021-05-02 18:55:16,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:55:16,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-05-02 18:55:16,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006 [2021-05-02 18:55:16,075 INFO L87 Difference]: Start difference. First operand 206 states and 230 transitions. Second operand has 78 states, 78 states have (on average 2.08974358974359) internal successors, (163), 77 states have internal predecessors, (163), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:55:20,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:55:20,304 INFO L93 Difference]: Finished difference Result 208 states and 232 transitions. [2021-05-02 18:55:20,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-05-02 18:55:20,304 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 2.08974358974359) internal successors, (163), 77 states have internal predecessors, (163), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 205 [2021-05-02 18:55:20,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:55:20,305 INFO L225 Difference]: With dead ends: 208 [2021-05-02 18:55:20,305 INFO L226 Difference]: Without dead ends: 208 [2021-05-02 18:55:20,306 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2990 ImplicationChecksByTransitivity, 6271.6ms TimeCoverageRelationStatistics Valid=8627, Invalid=14325, Unknown=0, NotChecked=0, Total=22952 [2021-05-02 18:55:20,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-05-02 18:55:20,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2021-05-02 18:55:20,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 203 states have (on average 1.1231527093596059) internal successors, (228), 203 states have internal predecessors, (228), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:55:20,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 232 transitions. [2021-05-02 18:55:20,308 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 232 transitions. Word has length 205 [2021-05-02 18:55:20,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:55:20,308 INFO L480 AbstractCegarLoop]: Abstraction has 208 states and 232 transitions. [2021-05-02 18:55:20,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 78 states, 78 states have (on average 2.08974358974359) internal successors, (163), 77 states have internal predecessors, (163), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:55:20,308 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 232 transitions. [2021-05-02 18:55:20,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-05-02 18:55:20,309 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:55:20,309 INFO L523 BasicCegarLoop]: trace histogram [97, 74, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:55:20,524 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:55:20,525 INFO L428 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:55:20,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:55:20,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1908497200, now seen corresponding path program 71 times [2021-05-02 18:55:20,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:55:20,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353744957] [2021-05-02 18:55:20,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:55:20,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:22,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:55:22,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:22,927 INFO L134 CoverageAnalysis]: Checked inductivity of 9410 backedges. 3375 proven. 5550 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2021-05-02 18:55:22,928 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:55:22,928 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353744957] [2021-05-02 18:55:22,928 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353744957] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:22,928 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771528529] [2021-05-02 18:55:22,928 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:55:23,045 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 98 check-sat command(s) [2021-05-02 18:55:23,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:55:23,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 76 conjunts are in the unsatisfiable core [2021-05-02 18:55:23,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:55:23,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:23,434 INFO L134 CoverageAnalysis]: Checked inductivity of 9410 backedges. 3375 proven. 5550 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2021-05-02 18:55:23,435 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771528529] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:23,435 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:55:23,435 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 77] total 79 [2021-05-02 18:55:23,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256633702] [2021-05-02 18:55:23,435 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-05-02 18:55:23,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:55:23,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-05-02 18:55:23,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2021-05-02 18:55:23,436 INFO L87 Difference]: Start difference. First operand 208 states and 232 transitions. Second operand has 79 states, 79 states have (on average 2.088607594936709) internal successors, (165), 78 states have internal predecessors, (165), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:55:28,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:55:28,197 INFO L93 Difference]: Finished difference Result 210 states and 234 transitions. [2021-05-02 18:55:28,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-05-02 18:55:28,198 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.088607594936709) internal successors, (165), 78 states have internal predecessors, (165), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 207 [2021-05-02 18:55:28,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:55:28,199 INFO L225 Difference]: With dead ends: 210 [2021-05-02 18:55:28,199 INFO L226 Difference]: Without dead ends: 210 [2021-05-02 18:55:28,200 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3068 ImplicationChecksByTransitivity, 6608.7ms TimeCoverageRelationStatistics Valid=8856, Invalid=14706, Unknown=0, NotChecked=0, Total=23562 [2021-05-02 18:55:28,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-05-02 18:55:28,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2021-05-02 18:55:28,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 205 states have (on average 1.1219512195121952) internal successors, (230), 205 states have internal predecessors, (230), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:55:28,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 234 transitions. [2021-05-02 18:55:28,201 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 234 transitions. Word has length 207 [2021-05-02 18:55:28,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:55:28,202 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 234 transitions. [2021-05-02 18:55:28,202 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 79 states, 79 states have (on average 2.088607594936709) internal successors, (165), 78 states have internal predecessors, (165), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:55:28,202 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 234 transitions. [2021-05-02 18:55:28,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-05-02 18:55:28,202 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:55:28,202 INFO L523 BasicCegarLoop]: trace histogram [98, 75, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:55:28,403 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,73 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:55:28,403 INFO L428 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:55:28,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:55:28,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1399129716, now seen corresponding path program 72 times [2021-05-02 18:55:28,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:55:28,404 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169899816] [2021-05-02 18:55:28,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:55:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:30,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:55:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:30,830 INFO L134 CoverageAnalysis]: Checked inductivity of 9605 backedges. 3420 proven. 5700 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2021-05-02 18:55:30,830 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:55:30,830 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169899816] [2021-05-02 18:55:30,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169899816] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:30,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001690488] [2021-05-02 18:55:30,831 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:55:31,058 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2021-05-02 18:55:31,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:55:31,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-02 18:55:31,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:55:31,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:33,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:33,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:33,095 INFO L134 CoverageAnalysis]: Checked inductivity of 9605 backedges. 3525 proven. 529 refuted. 0 times theorem prover too weak. 5551 trivial. 0 not checked. [2021-05-02 18:55:33,096 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001690488] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:33,096 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:55:33,096 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 26] total 103 [2021-05-02 18:55:33,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464251289] [2021-05-02 18:55:33,096 INFO L460 AbstractCegarLoop]: Interpolant automaton has 103 states [2021-05-02 18:55:33,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:55:33,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-05-02 18:55:33,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2021-05-02 18:55:33,097 INFO L87 Difference]: Start difference. First operand 210 states and 234 transitions. Second operand has 103 states, 103 states have (on average 2.087378640776699) internal successors, (215), 102 states have internal predecessors, (215), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:55:40,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:55:40,545 INFO L93 Difference]: Finished difference Result 215 states and 241 transitions. [2021-05-02 18:55:40,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-05-02 18:55:40,546 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.087378640776699) internal successors, (215), 102 states have internal predecessors, (215), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 209 [2021-05-02 18:55:40,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:55:40,547 INFO L225 Difference]: With dead ends: 215 [2021-05-02 18:55:40,547 INFO L226 Difference]: Without dead ends: 215 [2021-05-02 18:55:40,548 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5025 ImplicationChecksByTransitivity, 10851.5ms TimeCoverageRelationStatistics Valid=15453, Invalid=25553, Unknown=0, NotChecked=0, Total=41006 [2021-05-02 18:55:40,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-05-02 18:55:40,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 214. [2021-05-02 18:55:40,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 209 states have (on average 1.124401913875598) internal successors, (235), 209 states have internal predecessors, (235), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:55:40,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 239 transitions. [2021-05-02 18:55:40,550 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 239 transitions. Word has length 209 [2021-05-02 18:55:40,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:55:40,550 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 239 transitions. [2021-05-02 18:55:40,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 103 states, 103 states have (on average 2.087378640776699) internal successors, (215), 102 states have internal predecessors, (215), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:55:40,550 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 239 transitions. [2021-05-02 18:55:40,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-05-02 18:55:40,551 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:55:40,551 INFO L523 BasicCegarLoop]: trace histogram [100, 76, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:55:40,751 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:55:40,751 INFO L428 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:55:40,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:55:40,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1886584861, now seen corresponding path program 73 times [2021-05-02 18:55:40,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:55:40,752 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786965949] [2021-05-02 18:55:40,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:55:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:43,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:55:43,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:43,289 INFO L134 CoverageAnalysis]: Checked inductivity of 10001 backedges. 3619 proven. 5852 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2021-05-02 18:55:43,290 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:55:43,290 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786965949] [2021-05-02 18:55:43,290 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786965949] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:43,290 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218199387] [2021-05-02 18:55:43,290 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:55:43,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:43,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 78 conjunts are in the unsatisfiable core [2021-05-02 18:55:43,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:55:43,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:43,767 INFO L134 CoverageAnalysis]: Checked inductivity of 10001 backedges. 3619 proven. 5852 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2021-05-02 18:55:43,767 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218199387] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:43,768 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:55:43,768 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 79] total 81 [2021-05-02 18:55:43,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220660757] [2021-05-02 18:55:43,768 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states [2021-05-02 18:55:43,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:55:43,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-05-02 18:55:43,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3162, Invalid=3318, Unknown=0, NotChecked=0, Total=6480 [2021-05-02 18:55:43,769 INFO L87 Difference]: Start difference. First operand 214 states and 239 transitions. Second operand has 81 states, 81 states have (on average 2.0864197530864197) internal successors, (169), 80 states have internal predecessors, (169), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:55:48,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:55:48,603 INFO L93 Difference]: Finished difference Result 216 states and 241 transitions. [2021-05-02 18:55:48,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-05-02 18:55:48,604 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.0864197530864197) internal successors, (169), 80 states have internal predecessors, (169), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 213 [2021-05-02 18:55:48,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:55:48,604 INFO L225 Difference]: With dead ends: 216 [2021-05-02 18:55:48,604 INFO L226 Difference]: Without dead ends: 216 [2021-05-02 18:55:48,605 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3227 ImplicationChecksByTransitivity, 6798.2ms TimeCoverageRelationStatistics Valid=9323, Invalid=15483, Unknown=0, NotChecked=0, Total=24806 [2021-05-02 18:55:48,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-05-02 18:55:48,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-05-02 18:55:48,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 211 states have (on average 1.1232227488151658) internal successors, (237), 211 states have internal predecessors, (237), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:55:48,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 241 transitions. [2021-05-02 18:55:48,607 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 241 transitions. Word has length 213 [2021-05-02 18:55:48,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:55:48,607 INFO L480 AbstractCegarLoop]: Abstraction has 216 states and 241 transitions. [2021-05-02 18:55:48,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 81 states, 81 states have (on average 2.0864197530864197) internal successors, (169), 80 states have internal predecessors, (169), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:55:48,607 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 241 transitions. [2021-05-02 18:55:48,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-05-02 18:55:48,608 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:55:48,608 INFO L523 BasicCegarLoop]: trace histogram [101, 77, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:55:48,820 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-05-02 18:55:48,821 INFO L428 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:55:48,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:55:48,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1628083905, now seen corresponding path program 74 times [2021-05-02 18:55:48,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:55:48,821 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792680430] [2021-05-02 18:55:48,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:55:48,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:51,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:55:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:51,438 INFO L134 CoverageAnalysis]: Checked inductivity of 10202 backedges. 3666 proven. 6006 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2021-05-02 18:55:51,438 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:55:51,438 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792680430] [2021-05-02 18:55:51,438 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792680430] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:51,439 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734848371] [2021-05-02 18:55:51,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:55:51,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:55:51,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:55:51,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 79 conjunts are in the unsatisfiable core [2021-05-02 18:55:51,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:55:51,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:51,945 INFO L134 CoverageAnalysis]: Checked inductivity of 10202 backedges. 3666 proven. 6006 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2021-05-02 18:55:51,945 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734848371] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:51,945 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:55:51,945 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 80] total 82 [2021-05-02 18:55:51,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389276732] [2021-05-02 18:55:51,946 INFO L460 AbstractCegarLoop]: Interpolant automaton has 82 states [2021-05-02 18:55:51,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:55:51,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-05-02 18:55:51,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642 [2021-05-02 18:55:51,947 INFO L87 Difference]: Start difference. First operand 216 states and 241 transitions. Second operand has 82 states, 82 states have (on average 2.0853658536585367) internal successors, (171), 81 states have internal predecessors, (171), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:55:56,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:55:56,816 INFO L93 Difference]: Finished difference Result 218 states and 243 transitions. [2021-05-02 18:55:56,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-05-02 18:55:56,817 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 2.0853658536585367) internal successors, (171), 81 states have internal predecessors, (171), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 215 [2021-05-02 18:55:56,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:55:56,818 INFO L225 Difference]: With dead ends: 218 [2021-05-02 18:55:56,818 INFO L226 Difference]: Without dead ends: 218 [2021-05-02 18:55:56,818 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3308 ImplicationChecksByTransitivity, 6937.5ms TimeCoverageRelationStatistics Valid=9561, Invalid=15879, Unknown=0, NotChecked=0, Total=25440 [2021-05-02 18:55:56,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-05-02 18:55:56,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2021-05-02 18:55:56,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 213 states have (on average 1.1220657276995305) internal successors, (239), 213 states have internal predecessors, (239), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:55:56,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 243 transitions. [2021-05-02 18:55:56,820 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 243 transitions. Word has length 215 [2021-05-02 18:55:56,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:55:56,821 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 243 transitions. [2021-05-02 18:55:56,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 82 states, 82 states have (on average 2.0853658536585367) internal successors, (171), 81 states have internal predecessors, (171), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:55:56,821 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 243 transitions. [2021-05-02 18:55:56,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-05-02 18:55:56,821 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:55:56,821 INFO L523 BasicCegarLoop]: trace histogram [102, 78, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:55:57,028 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:55:57,029 INFO L428 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:55:57,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:55:57,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1978198939, now seen corresponding path program 75 times [2021-05-02 18:55:57,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:55:57,029 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121826512] [2021-05-02 18:55:57,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:55:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:59,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:55:59,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:59,649 INFO L134 CoverageAnalysis]: Checked inductivity of 10405 backedges. 3713 proven. 6162 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2021-05-02 18:55:59,649 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:55:59,649 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121826512] [2021-05-02 18:55:59,649 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121826512] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:59,650 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975006395] [2021-05-02 18:55:59,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:55:59,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 50 check-sat command(s) [2021-05-02 18:55:59,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:55:59,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 27 conjunts are in the unsatisfiable core [2021-05-02 18:55:59,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:55:59,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:59,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:00,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:00,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:00,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:00,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:00,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:00,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:00,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:00,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:00,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:00,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:00,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:00,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:00,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:00,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:00,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:00,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:00,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:00,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:00,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:00,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:00,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:00,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:00,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:00,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:00,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:00,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:00,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:00,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:01,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:01,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:01,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:01,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:01,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:01,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:01,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:01,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:01,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:01,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:01,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:01,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:01,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:01,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:01,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:01,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:01,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:01,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:01,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:01,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:01,891 INFO L134 CoverageAnalysis]: Checked inductivity of 10405 backedges. 3822 proven. 576 refuted. 0 times theorem prover too weak. 6007 trivial. 0 not checked. [2021-05-02 18:56:01,892 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975006395] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:01,892 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:56:01,892 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 27] total 107 [2021-05-02 18:56:01,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988275377] [2021-05-02 18:56:01,892 INFO L460 AbstractCegarLoop]: Interpolant automaton has 107 states [2021-05-02 18:56:01,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:56:01,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2021-05-02 18:56:01,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5567, Invalid=5775, Unknown=0, NotChecked=0, Total=11342 [2021-05-02 18:56:01,893 INFO L87 Difference]: Start difference. First operand 218 states and 243 transitions. Second operand has 107 states, 107 states have (on average 2.0841121495327104) internal successors, (223), 106 states have internal predecessors, (223), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:56:10,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:56:10,055 INFO L93 Difference]: Finished difference Result 223 states and 250 transitions. [2021-05-02 18:56:10,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-05-02 18:56:10,055 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 2.0841121495327104) internal successors, (223), 106 states have internal predecessors, (223), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 217 [2021-05-02 18:56:10,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:56:10,056 INFO L225 Difference]: With dead ends: 223 [2021-05-02 18:56:10,056 INFO L226 Difference]: Without dead ends: 223 [2021-05-02 18:56:10,058 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5434 ImplicationChecksByTransitivity, 11889.3ms TimeCoverageRelationStatistics Valid=16695, Invalid=27615, Unknown=0, NotChecked=0, Total=44310 [2021-05-02 18:56:10,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-05-02 18:56:10,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 222. [2021-05-02 18:56:10,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 217 states have (on average 1.1244239631336406) internal successors, (244), 217 states have internal predecessors, (244), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:56:10,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 248 transitions. [2021-05-02 18:56:10,060 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 248 transitions. Word has length 217 [2021-05-02 18:56:10,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:56:10,060 INFO L480 AbstractCegarLoop]: Abstraction has 222 states and 248 transitions. [2021-05-02 18:56:10,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 107 states, 107 states have (on average 2.0841121495327104) internal successors, (223), 106 states have internal predecessors, (223), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:56:10,060 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 248 transitions. [2021-05-02 18:56:10,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-05-02 18:56:10,061 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:56:10,061 INFO L523 BasicCegarLoop]: trace histogram [104, 79, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:56:10,277 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-05-02 18:56:10,277 INFO L428 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:56:10,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:56:10,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1313960398, now seen corresponding path program 76 times [2021-05-02 18:56:10,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:56:10,278 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978962546] [2021-05-02 18:56:10,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:56:10,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:13,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:56:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:13,258 INFO L134 CoverageAnalysis]: Checked inductivity of 10817 backedges. 3920 proven. 6320 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2021-05-02 18:56:13,258 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:56:13,258 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978962546] [2021-05-02 18:56:13,258 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978962546] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:13,258 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342076198] [2021-05-02 18:56:13,258 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:56:13,346 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:56:13,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:56:13,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 81 conjunts are in the unsatisfiable core [2021-05-02 18:56:13,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:56:13,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:13,816 INFO L134 CoverageAnalysis]: Checked inductivity of 10817 backedges. 3920 proven. 6320 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2021-05-02 18:56:13,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342076198] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:13,816 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:56:13,816 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 82] total 84 [2021-05-02 18:56:13,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297994548] [2021-05-02 18:56:13,817 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states [2021-05-02 18:56:13,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:56:13,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-05-02 18:56:13,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3405, Invalid=3567, Unknown=0, NotChecked=0, Total=6972 [2021-05-02 18:56:13,817 INFO L87 Difference]: Start difference. First operand 222 states and 248 transitions. Second operand has 84 states, 84 states have (on average 2.0833333333333335) internal successors, (175), 83 states have internal predecessors, (175), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:56:18,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:56:18,806 INFO L93 Difference]: Finished difference Result 224 states and 250 transitions. [2021-05-02 18:56:18,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-05-02 18:56:18,806 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 2.0833333333333335) internal successors, (175), 83 states have internal predecessors, (175), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 221 [2021-05-02 18:56:18,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:56:18,807 INFO L225 Difference]: With dead ends: 224 [2021-05-02 18:56:18,807 INFO L226 Difference]: Without dead ends: 224 [2021-05-02 18:56:18,808 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3473 ImplicationChecksByTransitivity, 7513.6ms TimeCoverageRelationStatistics Valid=10046, Invalid=16686, Unknown=0, NotChecked=0, Total=26732 [2021-05-02 18:56:18,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-05-02 18:56:18,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2021-05-02 18:56:18,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 219 states have (on average 1.1232876712328768) internal successors, (246), 219 states have internal predecessors, (246), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:56:18,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 250 transitions. [2021-05-02 18:56:18,809 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 250 transitions. Word has length 221 [2021-05-02 18:56:18,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:56:18,810 INFO L480 AbstractCegarLoop]: Abstraction has 224 states and 250 transitions. [2021-05-02 18:56:18,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 84 states, 84 states have (on average 2.0833333333333335) internal successors, (175), 83 states have internal predecessors, (175), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:56:18,810 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 250 transitions. [2021-05-02 18:56:18,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-05-02 18:56:18,810 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:56:18,810 INFO L523 BasicCegarLoop]: trace histogram [105, 80, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:56:19,011 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,78 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:56:19,011 INFO L428 AbstractCegarLoop]: === Iteration 82 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:56:19,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:56:19,011 INFO L82 PathProgramCache]: Analyzing trace with hash 859167630, now seen corresponding path program 77 times [2021-05-02 18:56:19,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:56:19,012 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705060935] [2021-05-02 18:56:19,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:56:19,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:21,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:56:21,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:21,771 INFO L134 CoverageAnalysis]: Checked inductivity of 11026 backedges. 3969 proven. 6480 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2021-05-02 18:56:21,771 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:56:21,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705060935] [2021-05-02 18:56:21,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705060935] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:21,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577768341] [2021-05-02 18:56:21,771 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:56:21,894 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 106 check-sat command(s) [2021-05-02 18:56:21,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:56:21,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 82 conjunts are in the unsatisfiable core [2021-05-02 18:56:21,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:56:21,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:21,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:22,315 INFO L134 CoverageAnalysis]: Checked inductivity of 11026 backedges. 3969 proven. 6480 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2021-05-02 18:56:22,315 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577768341] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:22,315 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:56:22,315 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 83] total 85 [2021-05-02 18:56:22,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401773112] [2021-05-02 18:56:22,316 INFO L460 AbstractCegarLoop]: Interpolant automaton has 85 states [2021-05-02 18:56:22,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:56:22,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-05-02 18:56:22,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140 [2021-05-02 18:56:22,317 INFO L87 Difference]: Start difference. First operand 224 states and 250 transitions. Second operand has 85 states, 85 states have (on average 2.0823529411764707) internal successors, (177), 84 states have internal predecessors, (177), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:56:27,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:56:27,528 INFO L93 Difference]: Finished difference Result 226 states and 252 transitions. [2021-05-02 18:56:27,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-05-02 18:56:27,528 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.0823529411764707) internal successors, (177), 84 states have internal predecessors, (177), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 223 [2021-05-02 18:56:27,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:56:27,529 INFO L225 Difference]: With dead ends: 226 [2021-05-02 18:56:27,529 INFO L226 Difference]: Without dead ends: 226 [2021-05-02 18:56:27,530 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3557 ImplicationChecksByTransitivity, 7387.5ms TimeCoverageRelationStatistics Valid=10293, Invalid=17097, Unknown=0, NotChecked=0, Total=27390 [2021-05-02 18:56:27,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-05-02 18:56:27,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2021-05-02 18:56:27,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 221 states have (on average 1.1221719457013575) internal successors, (248), 221 states have internal predecessors, (248), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:56:27,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 252 transitions. [2021-05-02 18:56:27,532 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 252 transitions. Word has length 223 [2021-05-02 18:56:27,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:56:27,532 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 252 transitions. [2021-05-02 18:56:27,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 85 states, 85 states have (on average 2.0823529411764707) internal successors, (177), 84 states have internal predecessors, (177), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:56:27,532 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 252 transitions. [2021-05-02 18:56:27,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-05-02 18:56:27,533 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:56:27,533 INFO L523 BasicCegarLoop]: trace histogram [106, 81, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:56:27,749 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:56:27,749 INFO L428 AbstractCegarLoop]: === Iteration 83 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:56:27,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:56:27,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1881096682, now seen corresponding path program 78 times [2021-05-02 18:56:27,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:56:27,749 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205064070] [2021-05-02 18:56:27,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:56:27,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:30,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:56:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:30,554 INFO L134 CoverageAnalysis]: Checked inductivity of 11237 backedges. 4018 proven. 6642 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2021-05-02 18:56:30,554 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:56:30,555 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205064070] [2021-05-02 18:56:30,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205064070] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:30,555 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808659139] [2021-05-02 18:56:30,555 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:56:30,787 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 103 check-sat command(s) [2021-05-02 18:56:30,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:56:30,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-02 18:56:30,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:56:31,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:31,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:31,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:31,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:31,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:31,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:31,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:31,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:31,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:31,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:31,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:31,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:31,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:31,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:31,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:31,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:31,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:31,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:31,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:31,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:31,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:31,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:31,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:31,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:31,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:31,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:32,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:32,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:32,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:32,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:32,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:32,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:32,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:32,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:32,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:32,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:32,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:32,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:32,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:32,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:32,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:32,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:32,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:32,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:32,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:32,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:33,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:33,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:33,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:33,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:33,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:33,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:33,344 INFO L134 CoverageAnalysis]: Checked inductivity of 11237 backedges. 4131 proven. 625 refuted. 0 times theorem prover too weak. 6481 trivial. 0 not checked. [2021-05-02 18:56:33,344 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808659139] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:33,345 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:56:33,345 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 28] total 111 [2021-05-02 18:56:33,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858395739] [2021-05-02 18:56:33,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 111 states [2021-05-02 18:56:33,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:56:33,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2021-05-02 18:56:33,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5997, Invalid=6213, Unknown=0, NotChecked=0, Total=12210 [2021-05-02 18:56:33,347 INFO L87 Difference]: Start difference. First operand 226 states and 252 transitions. Second operand has 111 states, 111 states have (on average 2.081081081081081) internal successors, (231), 110 states have internal predecessors, (231), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:56:42,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:56:42,508 INFO L93 Difference]: Finished difference Result 231 states and 259 transitions. [2021-05-02 18:56:42,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-05-02 18:56:42,509 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 2.081081081081081) internal successors, (231), 110 states have internal predecessors, (231), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 225 [2021-05-02 18:56:42,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:56:42,509 INFO L225 Difference]: With dead ends: 231 [2021-05-02 18:56:42,510 INFO L226 Difference]: Without dead ends: 231 [2021-05-02 18:56:42,511 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5859 ImplicationChecksByTransitivity, 13171.4ms TimeCoverageRelationStatistics Valid=17985, Invalid=29757, Unknown=0, NotChecked=0, Total=47742 [2021-05-02 18:56:42,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-05-02 18:56:42,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 230. [2021-05-02 18:56:42,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 225 states have (on average 1.1244444444444444) internal successors, (253), 225 states have internal predecessors, (253), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:56:42,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 257 transitions. [2021-05-02 18:56:42,513 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 257 transitions. Word has length 225 [2021-05-02 18:56:42,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:56:42,513 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 257 transitions. [2021-05-02 18:56:42,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 111 states, 111 states have (on average 2.081081081081081) internal successors, (231), 110 states have internal predecessors, (231), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:56:42,513 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 257 transitions. [2021-05-02 18:56:42,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-05-02 18:56:42,514 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:56:42,514 INFO L523 BasicCegarLoop]: trace histogram [108, 82, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:56:42,729 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:56:42,730 INFO L428 AbstractCegarLoop]: === Iteration 84 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:56:42,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:56:42,730 INFO L82 PathProgramCache]: Analyzing trace with hash -401837887, now seen corresponding path program 79 times [2021-05-02 18:56:42,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:56:42,730 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594489256] [2021-05-02 18:56:42,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:56:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:45,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:56:45,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:45,587 INFO L134 CoverageAnalysis]: Checked inductivity of 11665 backedges. 4233 proven. 6806 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2021-05-02 18:56:45,587 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:56:45,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594489256] [2021-05-02 18:56:45,587 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594489256] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:45,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589648759] [2021-05-02 18:56:45,587 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:56:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:45,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 84 conjunts are in the unsatisfiable core [2021-05-02 18:56:45,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:56:45,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:46,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:46,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:46,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:46,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:46,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:46,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:46,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:46,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:46,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:46,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:46,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:46,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:46,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:46,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:46,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:46,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:46,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:46,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:46,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:46,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:46,106 INFO L134 CoverageAnalysis]: Checked inductivity of 11665 backedges. 4233 proven. 6806 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2021-05-02 18:56:46,106 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589648759] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:46,106 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:56:46,106 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 85] total 87 [2021-05-02 18:56:46,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901747769] [2021-05-02 18:56:46,107 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2021-05-02 18:56:46,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:56:46,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-05-02 18:56:46,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2021-05-02 18:56:46,107 INFO L87 Difference]: Start difference. First operand 230 states and 257 transitions. Second operand has 87 states, 87 states have (on average 2.0804597701149423) internal successors, (181), 86 states have internal predecessors, (181), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:56:51,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:56:51,352 INFO L93 Difference]: Finished difference Result 232 states and 259 transitions. [2021-05-02 18:56:51,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-05-02 18:56:51,352 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.0804597701149423) internal successors, (181), 86 states have internal predecessors, (181), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 229 [2021-05-02 18:56:51,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:56:51,353 INFO L225 Difference]: With dead ends: 232 [2021-05-02 18:56:51,353 INFO L226 Difference]: Without dead ends: 232 [2021-05-02 18:56:51,354 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3728 ImplicationChecksByTransitivity, 7669.2ms TimeCoverageRelationStatistics Valid=10796, Invalid=17934, Unknown=0, NotChecked=0, Total=28730 [2021-05-02 18:56:51,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-05-02 18:56:51,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2021-05-02 18:56:51,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 227 states have (on average 1.1233480176211454) internal successors, (255), 227 states have internal predecessors, (255), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:56:51,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 259 transitions. [2021-05-02 18:56:51,355 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 259 transitions. Word has length 229 [2021-05-02 18:56:51,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:56:51,356 INFO L480 AbstractCegarLoop]: Abstraction has 232 states and 259 transitions. [2021-05-02 18:56:51,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 87 states, 87 states have (on average 2.0804597701149423) internal successors, (181), 86 states have internal predecessors, (181), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:56:51,356 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 259 transitions. [2021-05-02 18:56:51,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-05-02 18:56:51,356 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:56:51,357 INFO L523 BasicCegarLoop]: trace histogram [109, 83, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:56:51,564 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:56:51,565 INFO L428 AbstractCegarLoop]: === Iteration 85 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:56:51,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:56:51,565 INFO L82 PathProgramCache]: Analyzing trace with hash -795958755, now seen corresponding path program 80 times [2021-05-02 18:56:51,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:56:51,565 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996774212] [2021-05-02 18:56:51,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:56:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:54,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:56:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:54,551 INFO L134 CoverageAnalysis]: Checked inductivity of 11882 backedges. 4284 proven. 6972 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2021-05-02 18:56:54,551 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:56:54,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996774212] [2021-05-02 18:56:54,551 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996774212] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:54,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842769732] [2021-05-02 18:56:54,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:56:54,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:56:54,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:56:54,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 85 conjunts are in the unsatisfiable core [2021-05-02 18:56:54,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:56:54,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:55,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:55,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:55,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:55,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:55,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:55,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:55,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:55,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:55,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:55,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:55,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:55,085 INFO L134 CoverageAnalysis]: Checked inductivity of 11882 backedges. 4284 proven. 6972 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2021-05-02 18:56:55,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842769732] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:55,086 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:56:55,086 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 86] total 88 [2021-05-02 18:56:55,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137935883] [2021-05-02 18:56:55,086 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2021-05-02 18:56:55,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:56:55,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-05-02 18:56:55,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 18:56:55,087 INFO L87 Difference]: Start difference. First operand 232 states and 259 transitions. Second operand has 88 states, 88 states have (on average 2.0795454545454546) internal successors, (183), 87 states have internal predecessors, (183), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:57:00,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:57:00,563 INFO L93 Difference]: Finished difference Result 234 states and 261 transitions. [2021-05-02 18:57:00,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-02 18:57:00,563 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 2.0795454545454546) internal successors, (183), 87 states have internal predecessors, (183), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 231 [2021-05-02 18:57:00,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:57:00,564 INFO L225 Difference]: With dead ends: 234 [2021-05-02 18:57:00,564 INFO L226 Difference]: Without dead ends: 234 [2021-05-02 18:57:00,565 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3815 ImplicationChecksByTransitivity, 8027.9ms TimeCoverageRelationStatistics Valid=11052, Invalid=18360, Unknown=0, NotChecked=0, Total=29412 [2021-05-02 18:57:00,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-05-02 18:57:00,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2021-05-02 18:57:00,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 229 states have (on average 1.1222707423580787) internal successors, (257), 229 states have internal predecessors, (257), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:57:00,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 261 transitions. [2021-05-02 18:57:00,567 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 261 transitions. Word has length 231 [2021-05-02 18:57:00,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:57:00,567 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 261 transitions. [2021-05-02 18:57:00,567 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 88 states, 88 states have (on average 2.0795454545454546) internal successors, (183), 87 states have internal predecessors, (183), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:57:00,567 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 261 transitions. [2021-05-02 18:57:00,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-05-02 18:57:00,568 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:57:00,568 INFO L523 BasicCegarLoop]: trace histogram [110, 84, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:57:00,768 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:57:00,769 INFO L428 AbstractCegarLoop]: === Iteration 86 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:57:00,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:57:00,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1588990855, now seen corresponding path program 81 times [2021-05-02 18:57:00,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:57:00,769 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831392336] [2021-05-02 18:57:00,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:57:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:57:03,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:57:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:57:03,828 INFO L134 CoverageAnalysis]: Checked inductivity of 12101 backedges. 4335 proven. 7140 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2021-05-02 18:57:03,829 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:57:03,829 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831392336] [2021-05-02 18:57:03,829 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831392336] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:57:03,829 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313972249] [2021-05-02 18:57:03,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:57:03,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2021-05-02 18:57:03,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:57:03,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 29 conjunts are in the unsatisfiable core [2021-05-02 18:57:03,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:57:04,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:05,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:05,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:05,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:05,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:05,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:05,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:05,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:05,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:05,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:05,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:05,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:05,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:05,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:05,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:05,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:05,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:05,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:05,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:05,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:05,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:05,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:05,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:06,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:06,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:06,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:06,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:06,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:06,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:06,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:06,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:06,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:06,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:06,517 INFO L134 CoverageAnalysis]: Checked inductivity of 12101 backedges. 4452 proven. 676 refuted. 0 times theorem prover too weak. 6973 trivial. 0 not checked. [2021-05-02 18:57:06,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313972249] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:57:06,518 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:57:06,518 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 29] total 115 [2021-05-02 18:57:06,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430997937] [2021-05-02 18:57:06,518 INFO L460 AbstractCegarLoop]: Interpolant automaton has 115 states [2021-05-02 18:57:06,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:57:06,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2021-05-02 18:57:06,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6443, Invalid=6667, Unknown=0, NotChecked=0, Total=13110 [2021-05-02 18:57:06,519 INFO L87 Difference]: Start difference. First operand 234 states and 261 transitions. Second operand has 115 states, 115 states have (on average 2.0782608695652174) internal successors, (239), 114 states have internal predecessors, (239), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:57:15,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:57:15,589 INFO L93 Difference]: Finished difference Result 239 states and 268 transitions. [2021-05-02 18:57:15,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2021-05-02 18:57:15,589 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 115 states have (on average 2.0782608695652174) internal successors, (239), 114 states have internal predecessors, (239), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 233 [2021-05-02 18:57:15,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:57:15,590 INFO L225 Difference]: With dead ends: 239 [2021-05-02 18:57:15,590 INFO L226 Difference]: Without dead ends: 239 [2021-05-02 18:57:15,592 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6300 ImplicationChecksByTransitivity, 13492.8ms TimeCoverageRelationStatistics Valid=19323, Invalid=31979, Unknown=0, NotChecked=0, Total=51302 [2021-05-02 18:57:15,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-05-02 18:57:15,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 238. [2021-05-02 18:57:15,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 233 states have (on average 1.1244635193133048) internal successors, (262), 233 states have internal predecessors, (262), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:57:15,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 266 transitions. [2021-05-02 18:57:15,594 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 266 transitions. Word has length 233 [2021-05-02 18:57:15,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:57:15,594 INFO L480 AbstractCegarLoop]: Abstraction has 238 states and 266 transitions. [2021-05-02 18:57:15,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 115 states, 115 states have (on average 2.0782608695652174) internal successors, (239), 114 states have internal predecessors, (239), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:57:15,594 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 266 transitions. [2021-05-02 18:57:15,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-05-02 18:57:15,595 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:57:15,595 INFO L523 BasicCegarLoop]: trace histogram [112, 85, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:57:15,811 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,83 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:57:15,811 INFO L428 AbstractCegarLoop]: === Iteration 87 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:57:15,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:57:15,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1232508816, now seen corresponding path program 82 times [2021-05-02 18:57:15,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:57:15,811 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445666909] [2021-05-02 18:57:15,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:57:15,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:57:18,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:57:18,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:57:18,975 INFO L134 CoverageAnalysis]: Checked inductivity of 12545 backedges. 4558 proven. 7310 refuted. 0 times theorem prover too weak. 677 trivial. 0 not checked. [2021-05-02 18:57:18,975 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:57:18,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445666909] [2021-05-02 18:57:18,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445666909] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:57:18,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511440455] [2021-05-02 18:57:18,975 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:57:19,068 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:57:19,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:57:19,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 87 conjunts are in the unsatisfiable core [2021-05-02 18:57:19,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:57:19,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:19,542 INFO L134 CoverageAnalysis]: Checked inductivity of 12545 backedges. 4558 proven. 7310 refuted. 0 times theorem prover too weak. 677 trivial. 0 not checked. [2021-05-02 18:57:19,542 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511440455] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:57:19,543 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:57:19,543 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 88] total 90 [2021-05-02 18:57:19,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103706267] [2021-05-02 18:57:19,543 INFO L460 AbstractCegarLoop]: Interpolant automaton has 90 states [2021-05-02 18:57:19,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:57:19,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-05-02 18:57:19,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3918, Invalid=4092, Unknown=0, NotChecked=0, Total=8010 [2021-05-02 18:57:19,544 INFO L87 Difference]: Start difference. First operand 238 states and 266 transitions. Second operand has 90 states, 90 states have (on average 2.077777777777778) internal successors, (187), 89 states have internal predecessors, (187), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:57:25,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:57:25,238 INFO L93 Difference]: Finished difference Result 240 states and 268 transitions. [2021-05-02 18:57:25,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-05-02 18:57:25,238 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 2.077777777777778) internal successors, (187), 89 states have internal predecessors, (187), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 237 [2021-05-02 18:57:25,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:57:25,239 INFO L225 Difference]: With dead ends: 240 [2021-05-02 18:57:25,239 INFO L226 Difference]: Without dead ends: 240 [2021-05-02 18:57:25,240 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3992 ImplicationChecksByTransitivity, 8357.8ms TimeCoverageRelationStatistics Valid=11573, Invalid=19227, Unknown=0, NotChecked=0, Total=30800 [2021-05-02 18:57:25,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-05-02 18:57:25,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2021-05-02 18:57:25,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 235 states have (on average 1.123404255319149) internal successors, (264), 235 states have internal predecessors, (264), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:57:25,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 268 transitions. [2021-05-02 18:57:25,242 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 268 transitions. Word has length 237 [2021-05-02 18:57:25,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:57:25,243 INFO L480 AbstractCegarLoop]: Abstraction has 240 states and 268 transitions. [2021-05-02 18:57:25,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 90 states, 90 states have (on average 2.077777777777778) internal successors, (187), 89 states have internal predecessors, (187), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:57:25,243 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 268 transitions. [2021-05-02 18:57:25,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-05-02 18:57:25,243 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:57:25,244 INFO L523 BasicCegarLoop]: trace histogram [113, 86, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:57:25,456 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:57:25,457 INFO L428 AbstractCegarLoop]: === Iteration 88 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:57:25,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:57:25,457 INFO L82 PathProgramCache]: Analyzing trace with hash -238048020, now seen corresponding path program 83 times [2021-05-02 18:57:25,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:57:25,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413021073] [2021-05-02 18:57:25,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:57:25,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:57:28,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:57:28,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:57:28,708 INFO L134 CoverageAnalysis]: Checked inductivity of 12770 backedges. 4611 proven. 7482 refuted. 0 times theorem prover too weak. 677 trivial. 0 not checked. [2021-05-02 18:57:28,708 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:57:28,708 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413021073] [2021-05-02 18:57:28,708 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413021073] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:57:28,708 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15790908] [2021-05-02 18:57:28,708 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:57:28,839 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 114 check-sat command(s) [2021-05-02 18:57:28,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:57:28,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 88 conjunts are in the unsatisfiable core [2021-05-02 18:57:28,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:57:28,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:28,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:29,299 INFO L134 CoverageAnalysis]: Checked inductivity of 12770 backedges. 4611 proven. 7482 refuted. 0 times theorem prover too weak. 677 trivial. 0 not checked. [2021-05-02 18:57:29,299 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15790908] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:57:29,299 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:57:29,300 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 89] total 91 [2021-05-02 18:57:29,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952193700] [2021-05-02 18:57:29,300 INFO L460 AbstractCegarLoop]: Interpolant automaton has 91 states [2021-05-02 18:57:29,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:57:29,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-05-02 18:57:29,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2021-05-02 18:57:29,301 INFO L87 Difference]: Start difference. First operand 240 states and 268 transitions. Second operand has 91 states, 91 states have (on average 2.076923076923077) internal successors, (189), 90 states have internal predecessors, (189), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:57:35,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:57:35,126 INFO L93 Difference]: Finished difference Result 242 states and 270 transitions. [2021-05-02 18:57:35,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-05-02 18:57:35,127 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.076923076923077) internal successors, (189), 90 states have internal predecessors, (189), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 239 [2021-05-02 18:57:35,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:57:35,127 INFO L225 Difference]: With dead ends: 242 [2021-05-02 18:57:35,127 INFO L226 Difference]: Without dead ends: 242 [2021-05-02 18:57:35,129 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4082 ImplicationChecksByTransitivity, 8584.1ms TimeCoverageRelationStatistics Valid=11838, Invalid=19668, Unknown=0, NotChecked=0, Total=31506 [2021-05-02 18:57:35,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-05-02 18:57:35,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2021-05-02 18:57:35,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 237 states have (on average 1.1223628691983123) internal successors, (266), 237 states have internal predecessors, (266), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:57:35,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 270 transitions. [2021-05-02 18:57:35,130 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 270 transitions. Word has length 239 [2021-05-02 18:57:35,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:57:35,131 INFO L480 AbstractCegarLoop]: Abstraction has 242 states and 270 transitions. [2021-05-02 18:57:35,131 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 91 states, 91 states have (on average 2.076923076923077) internal successors, (189), 90 states have internal predecessors, (189), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:57:35,131 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 270 transitions. [2021-05-02 18:57:35,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-05-02 18:57:35,131 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:57:35,131 INFO L523 BasicCegarLoop]: trace histogram [114, 87, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:57:35,332 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2021-05-02 18:57:35,332 INFO L428 AbstractCegarLoop]: === Iteration 89 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:57:35,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:57:35,332 INFO L82 PathProgramCache]: Analyzing trace with hash -398927032, now seen corresponding path program 84 times [2021-05-02 18:57:35,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:57:35,333 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543047443] [2021-05-02 18:57:35,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:57:35,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:57:38,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:57:38,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:57:38,750 INFO L134 CoverageAnalysis]: Checked inductivity of 12997 backedges. 4664 proven. 7656 refuted. 0 times theorem prover too weak. 677 trivial. 0 not checked. [2021-05-02 18:57:38,750 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:57:38,750 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543047443] [2021-05-02 18:57:38,750 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543047443] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:57:38,750 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967771434] [2021-05-02 18:57:38,750 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:57:38,987 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 111 check-sat command(s) [2021-05-02 18:57:38,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:57:38,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 30 conjunts are in the unsatisfiable core [2021-05-02 18:57:38,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:57:39,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:39,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:39,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:39,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:39,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:39,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:39,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:39,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:39,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:39,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:39,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:39,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:39,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:39,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:39,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:39,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:39,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:39,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:39,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:40,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:41,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:41,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:41,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:41,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:41,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:41,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:41,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:41,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:41,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:41,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:41,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:41,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:41,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:41,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:41,828 INFO L134 CoverageAnalysis]: Checked inductivity of 12997 backedges. 4785 proven. 729 refuted. 0 times theorem prover too weak. 7483 trivial. 0 not checked. [2021-05-02 18:57:41,828 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967771434] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:57:41,828 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:57:41,828 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 30] total 119 [2021-05-02 18:57:41,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184726688] [2021-05-02 18:57:41,828 INFO L460 AbstractCegarLoop]: Interpolant automaton has 119 states [2021-05-02 18:57:41,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:57:41,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2021-05-02 18:57:41,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6905, Invalid=7137, Unknown=0, NotChecked=0, Total=14042 [2021-05-02 18:57:41,830 INFO L87 Difference]: Start difference. First operand 242 states and 270 transitions. Second operand has 119 states, 119 states have (on average 2.0756302521008405) internal successors, (247), 118 states have internal predecessors, (247), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:57:51,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:57:51,992 INFO L93 Difference]: Finished difference Result 247 states and 277 transitions. [2021-05-02 18:57:51,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2021-05-02 18:57:51,993 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 2.0756302521008405) internal successors, (247), 118 states have internal predecessors, (247), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 241 [2021-05-02 18:57:51,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:57:51,994 INFO L225 Difference]: With dead ends: 247 [2021-05-02 18:57:51,994 INFO L226 Difference]: Without dead ends: 247 [2021-05-02 18:57:51,996 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6757 ImplicationChecksByTransitivity, 15136.0ms TimeCoverageRelationStatistics Valid=20709, Invalid=34281, Unknown=0, NotChecked=0, Total=54990 [2021-05-02 18:57:51,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-05-02 18:57:51,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 246. [2021-05-02 18:57:51,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 241 states have (on average 1.1244813278008299) internal successors, (271), 241 states have internal predecessors, (271), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:57:51,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 275 transitions. [2021-05-02 18:57:51,997 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 275 transitions. Word has length 241 [2021-05-02 18:57:51,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:57:51,998 INFO L480 AbstractCegarLoop]: Abstraction has 246 states and 275 transitions. [2021-05-02 18:57:51,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 119 states, 119 states have (on average 2.0756302521008405) internal successors, (247), 118 states have internal predecessors, (247), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:57:51,998 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 275 transitions. [2021-05-02 18:57:51,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-05-02 18:57:51,998 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:57:51,999 INFO L523 BasicCegarLoop]: trace histogram [116, 88, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:57:52,199 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:57:52,199 INFO L428 AbstractCegarLoop]: === Iteration 90 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:57:52,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:57:52,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1535053153, now seen corresponding path program 85 times [2021-05-02 18:57:52,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:57:52,200 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387001412] [2021-05-02 18:57:52,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:57:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:57:55,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:57:55,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:57:55,668 INFO L134 CoverageAnalysis]: Checked inductivity of 13457 backedges. 4895 proven. 7832 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2021-05-02 18:57:55,668 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:57:55,668 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387001412] [2021-05-02 18:57:55,668 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387001412] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:57:55,668 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17243863] [2021-05-02 18:57:55,668 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:57:55,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:57:55,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 90 conjunts are in the unsatisfiable core [2021-05-02 18:57:55,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:57:55,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:55,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:56,240 INFO L134 CoverageAnalysis]: Checked inductivity of 13457 backedges. 4895 proven. 7832 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2021-05-02 18:57:56,240 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17243863] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:57:56,241 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:57:56,241 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 91] total 93 [2021-05-02 18:57:56,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023668551] [2021-05-02 18:57:56,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 93 states [2021-05-02 18:57:56,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:57:56,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-05-02 18:57:56,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556 [2021-05-02 18:57:56,242 INFO L87 Difference]: Start difference. First operand 246 states and 275 transitions. Second operand has 93 states, 93 states have (on average 2.075268817204301) internal successors, (193), 92 states have internal predecessors, (193), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:58:02,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:58:02,314 INFO L93 Difference]: Finished difference Result 248 states and 277 transitions. [2021-05-02 18:58:02,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-05-02 18:58:02,315 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.075268817204301) internal successors, (193), 92 states have internal predecessors, (193), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 245 [2021-05-02 18:58:02,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:58:02,315 INFO L225 Difference]: With dead ends: 248 [2021-05-02 18:58:02,315 INFO L226 Difference]: Without dead ends: 248 [2021-05-02 18:58:02,316 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4265 ImplicationChecksByTransitivity, 9031.7ms TimeCoverageRelationStatistics Valid=12377, Invalid=20565, Unknown=0, NotChecked=0, Total=32942 [2021-05-02 18:58:02,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-05-02 18:58:02,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2021-05-02 18:58:02,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 243 states have (on average 1.123456790123457) internal successors, (273), 243 states have internal predecessors, (273), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:58:02,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 277 transitions. [2021-05-02 18:58:02,318 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 277 transitions. Word has length 245 [2021-05-02 18:58:02,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:58:02,318 INFO L480 AbstractCegarLoop]: Abstraction has 248 states and 277 transitions. [2021-05-02 18:58:02,318 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 93 states, 93 states have (on average 2.075268817204301) internal successors, (193), 92 states have internal predecessors, (193), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:58:02,318 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 277 transitions. [2021-05-02 18:58:02,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-05-02 18:58:02,319 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:58:02,319 INFO L523 BasicCegarLoop]: trace histogram [117, 89, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:58:02,524 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2021-05-02 18:58:02,525 INFO L428 AbstractCegarLoop]: === Iteration 91 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:58:02,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:58:02,525 INFO L82 PathProgramCache]: Analyzing trace with hash -913511429, now seen corresponding path program 86 times [2021-05-02 18:58:02,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:58:02,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691889084] [2021-05-02 18:58:02,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:58:02,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:58:06,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:58:06,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:58:06,118 INFO L134 CoverageAnalysis]: Checked inductivity of 13690 backedges. 4950 proven. 8010 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2021-05-02 18:58:06,118 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:58:06,118 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691889084] [2021-05-02 18:58:06,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691889084] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:58:06,118 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024696530] [2021-05-02 18:58:06,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:58:06,205 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:58:06,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:58:06,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 91 conjunts are in the unsatisfiable core [2021-05-02 18:58:06,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:58:06,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:06,719 INFO L134 CoverageAnalysis]: Checked inductivity of 13690 backedges. 4950 proven. 8010 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2021-05-02 18:58:06,720 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024696530] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:58:06,720 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:58:06,720 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 92] total 94 [2021-05-02 18:58:06,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248345395] [2021-05-02 18:58:06,720 INFO L460 AbstractCegarLoop]: Interpolant automaton has 94 states [2021-05-02 18:58:06,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:58:06,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-05-02 18:58:06,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742 [2021-05-02 18:58:06,721 INFO L87 Difference]: Start difference. First operand 248 states and 277 transitions. Second operand has 94 states, 94 states have (on average 2.074468085106383) internal successors, (195), 93 states have internal predecessors, (195), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:58:12,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:58:12,922 INFO L93 Difference]: Finished difference Result 250 states and 279 transitions. [2021-05-02 18:58:12,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-05-02 18:58:12,923 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 2.074468085106383) internal successors, (195), 93 states have internal predecessors, (195), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 247 [2021-05-02 18:58:12,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:58:12,923 INFO L225 Difference]: With dead ends: 250 [2021-05-02 18:58:12,923 INFO L226 Difference]: Without dead ends: 250 [2021-05-02 18:58:12,924 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4358 ImplicationChecksByTransitivity, 9337.5ms TimeCoverageRelationStatistics Valid=12651, Invalid=21021, Unknown=0, NotChecked=0, Total=33672 [2021-05-02 18:58:12,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-05-02 18:58:12,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2021-05-02 18:58:12,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 245 states have (on average 1.1224489795918366) internal successors, (275), 245 states have internal predecessors, (275), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:58:12,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 279 transitions. [2021-05-02 18:58:12,926 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 279 transitions. Word has length 247 [2021-05-02 18:58:12,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:58:12,926 INFO L480 AbstractCegarLoop]: Abstraction has 250 states and 279 transitions. [2021-05-02 18:58:12,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 94 states, 94 states have (on average 2.074468085106383) internal successors, (195), 93 states have internal predecessors, (195), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:58:12,926 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 279 transitions. [2021-05-02 18:58:12,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-05-02 18:58:12,927 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:58:12,927 INFO L523 BasicCegarLoop]: trace histogram [118, 90, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:58:13,143 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:58:13,143 INFO L428 AbstractCegarLoop]: === Iteration 92 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:58:13,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:58:13,143 INFO L82 PathProgramCache]: Analyzing trace with hash -612368809, now seen corresponding path program 87 times [2021-05-02 18:58:13,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:58:13,143 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352048238] [2021-05-02 18:58:13,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:58:13,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:58:16,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:58:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:58:16,788 INFO L134 CoverageAnalysis]: Checked inductivity of 13925 backedges. 5005 proven. 8190 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2021-05-02 18:58:16,788 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:58:16,788 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352048238] [2021-05-02 18:58:16,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352048238] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:58:16,788 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092088862] [2021-05-02 18:58:16,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:58:16,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2021-05-02 18:58:16,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:58:16,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-02 18:58:16,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:58:17,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:17,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:17,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:17,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:17,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:17,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:17,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:17,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:17,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:17,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:17,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:17,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:17,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:17,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:17,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:17,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:17,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:17,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:17,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:17,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:18,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:18,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:18,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:18,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:18,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:18,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:18,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:18,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:18,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:18,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:18,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:18,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:18,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:18,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:18,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:18,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:18,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:18,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:18,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:18,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:18,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:18,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:19,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:19,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:19,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:19,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:19,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:19,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:19,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:19,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:19,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:19,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:19,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:19,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:19,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:19,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:19,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:19,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:19,907 INFO L134 CoverageAnalysis]: Checked inductivity of 13925 backedges. 5130 proven. 784 refuted. 0 times theorem prover too weak. 8011 trivial. 0 not checked. [2021-05-02 18:58:19,907 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092088862] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:58:19,907 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:58:19,907 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 31] total 123 [2021-05-02 18:58:19,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800860922] [2021-05-02 18:58:19,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 123 states [2021-05-02 18:58:19,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:58:19,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2021-05-02 18:58:19,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7383, Invalid=7623, Unknown=0, NotChecked=0, Total=15006 [2021-05-02 18:58:19,909 INFO L87 Difference]: Start difference. First operand 250 states and 279 transitions. Second operand has 123 states, 123 states have (on average 2.073170731707317) internal successors, (255), 122 states have internal predecessors, (255), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:58:30,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:58:30,516 INFO L93 Difference]: Finished difference Result 255 states and 286 transitions. [2021-05-02 18:58:30,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2021-05-02 18:58:30,516 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 2.073170731707317) internal successors, (255), 122 states have internal predecessors, (255), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 249 [2021-05-02 18:58:30,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:58:30,517 INFO L225 Difference]: With dead ends: 255 [2021-05-02 18:58:30,517 INFO L226 Difference]: Without dead ends: 255 [2021-05-02 18:58:30,519 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7230 ImplicationChecksByTransitivity, 15964.1ms TimeCoverageRelationStatistics Valid=22143, Invalid=36663, Unknown=0, NotChecked=0, Total=58806 [2021-05-02 18:58:30,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-05-02 18:58:30,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 254. [2021-05-02 18:58:30,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 249 states have (on average 1.1244979919678715) internal successors, (280), 249 states have internal predecessors, (280), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:58:30,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 284 transitions. [2021-05-02 18:58:30,521 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 284 transitions. Word has length 249 [2021-05-02 18:58:30,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:58:30,521 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 284 transitions. [2021-05-02 18:58:30,521 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 123 states, 123 states have (on average 2.073170731707317) internal successors, (255), 122 states have internal predecessors, (255), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:58:30,521 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 284 transitions. [2021-05-02 18:58:30,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-05-02 18:58:30,522 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:58:30,522 INFO L523 BasicCegarLoop]: trace histogram [120, 91, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:58:30,737 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:58:30,737 INFO L428 AbstractCegarLoop]: === Iteration 93 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:58:30,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:58:30,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1635552786, now seen corresponding path program 88 times [2021-05-02 18:58:30,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:58:30,737 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901385715] [2021-05-02 18:58:30,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:58:30,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:58:34,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:58:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:58:34,504 INFO L134 CoverageAnalysis]: Checked inductivity of 14401 backedges. 5244 proven. 8372 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2021-05-02 18:58:34,504 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:58:34,504 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901385715] [2021-05-02 18:58:34,504 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901385715] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:58:34,504 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124745282] [2021-05-02 18:58:34,504 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:58:34,593 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:58:34,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:58:34,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 93 conjunts are in the unsatisfiable core [2021-05-02 18:58:34,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:58:34,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:35,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:35,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:35,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:35,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:35,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:35,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:35,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:35,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:35,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:35,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:35,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:35,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:35,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:35,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:35,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:35,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:35,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:35,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:35,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:35,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:35,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:35,127 INFO L134 CoverageAnalysis]: Checked inductivity of 14401 backedges. 5244 proven. 8372 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2021-05-02 18:58:35,127 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124745282] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:58:35,127 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:58:35,127 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 94] total 96 [2021-05-02 18:58:35,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193171876] [2021-05-02 18:58:35,128 INFO L460 AbstractCegarLoop]: Interpolant automaton has 96 states [2021-05-02 18:58:35,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:58:35,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-05-02 18:58:35,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4467, Invalid=4653, Unknown=0, NotChecked=0, Total=9120 [2021-05-02 18:58:35,129 INFO L87 Difference]: Start difference. First operand 254 states and 284 transitions. Second operand has 96 states, 96 states have (on average 2.0729166666666665) internal successors, (199), 95 states have internal predecessors, (199), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:58:41,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:58:41,684 INFO L93 Difference]: Finished difference Result 256 states and 286 transitions. [2021-05-02 18:58:41,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-05-02 18:58:41,685 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.0729166666666665) internal successors, (199), 95 states have internal predecessors, (199), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 253 [2021-05-02 18:58:41,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:58:41,686 INFO L225 Difference]: With dead ends: 256 [2021-05-02 18:58:41,686 INFO L226 Difference]: Without dead ends: 256 [2021-05-02 18:58:41,687 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4547 ImplicationChecksByTransitivity, 9898.1ms TimeCoverageRelationStatistics Valid=13208, Invalid=21948, Unknown=0, NotChecked=0, Total=35156 [2021-05-02 18:58:41,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-05-02 18:58:41,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2021-05-02 18:58:41,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 251 states have (on average 1.1235059760956174) internal successors, (282), 251 states have internal predecessors, (282), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:58:41,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 286 transitions. [2021-05-02 18:58:41,688 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 286 transitions. Word has length 253 [2021-05-02 18:58:41,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:58:41,689 INFO L480 AbstractCegarLoop]: Abstraction has 256 states and 286 transitions. [2021-05-02 18:58:41,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 96 states, 96 states have (on average 2.0729166666666665) internal successors, (199), 95 states have internal predecessors, (199), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:58:41,689 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 286 transitions. [2021-05-02 18:58:41,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-05-02 18:58:41,690 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:58:41,690 INFO L523 BasicCegarLoop]: trace histogram [121, 92, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:58:41,890 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:58:41,890 INFO L428 AbstractCegarLoop]: === Iteration 94 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:58:41,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:58:41,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1629376330, now seen corresponding path program 89 times [2021-05-02 18:58:41,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:58:41,891 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82031976] [2021-05-02 18:58:41,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:58:41,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:58:45,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:58:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:58:45,774 INFO L134 CoverageAnalysis]: Checked inductivity of 14642 backedges. 5301 proven. 8556 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2021-05-02 18:58:45,774 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:58:45,774 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82031976] [2021-05-02 18:58:45,774 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82031976] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:58:45,774 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912713657] [2021-05-02 18:58:45,775 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:58:45,919 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 122 check-sat command(s) [2021-05-02 18:58:45,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:58:45,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 94 conjunts are in the unsatisfiable core [2021-05-02 18:58:45,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:58:45,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:45,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:45,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:45,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:45,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:45,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:45,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:45,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:45,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:45,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:45,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:45,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:45,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:45,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:45,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:45,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:45,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:45,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:45,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:45,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:45,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:45,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:45,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:45,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:45,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,456 INFO L134 CoverageAnalysis]: Checked inductivity of 14642 backedges. 5301 proven. 8556 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2021-05-02 18:58:46,457 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912713657] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:58:46,457 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:58:46,457 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 95] total 97 [2021-05-02 18:58:46,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728807510] [2021-05-02 18:58:46,457 INFO L460 AbstractCegarLoop]: Interpolant automaton has 97 states [2021-05-02 18:58:46,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:58:46,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-05-02 18:58:46,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2021-05-02 18:58:46,458 INFO L87 Difference]: Start difference. First operand 256 states and 286 transitions. Second operand has 97 states, 97 states have (on average 2.0721649484536084) internal successors, (201), 96 states have internal predecessors, (201), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:58:53,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:58:53,295 INFO L93 Difference]: Finished difference Result 258 states and 288 transitions. [2021-05-02 18:58:53,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-05-02 18:58:53,296 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.0721649484536084) internal successors, (201), 96 states have internal predecessors, (201), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 255 [2021-05-02 18:58:53,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:58:53,296 INFO L225 Difference]: With dead ends: 258 [2021-05-02 18:58:53,296 INFO L226 Difference]: Without dead ends: 258 [2021-05-02 18:58:53,298 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4643 ImplicationChecksByTransitivity, 10262.0ms TimeCoverageRelationStatistics Valid=13491, Invalid=22419, Unknown=0, NotChecked=0, Total=35910 [2021-05-02 18:58:53,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-05-02 18:58:53,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2021-05-02 18:58:53,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 253 states have (on average 1.1225296442687747) internal successors, (284), 253 states have internal predecessors, (284), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:58:53,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 288 transitions. [2021-05-02 18:58:53,299 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 288 transitions. Word has length 255 [2021-05-02 18:58:53,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:58:53,300 INFO L480 AbstractCegarLoop]: Abstraction has 258 states and 288 transitions. [2021-05-02 18:58:53,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 97 states, 97 states have (on average 2.0721649484536084) internal successors, (201), 96 states have internal predecessors, (201), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:58:53,300 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 288 transitions. [2021-05-02 18:58:53,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-05-02 18:58:53,300 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:58:53,301 INFO L523 BasicCegarLoop]: trace histogram [122, 93, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:58:53,501 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:58:53,501 INFO L428 AbstractCegarLoop]: === Iteration 95 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:58:53,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:58:53,502 INFO L82 PathProgramCache]: Analyzing trace with hash -394836570, now seen corresponding path program 90 times [2021-05-02 18:58:53,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:58:53,502 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375172827] [2021-05-02 18:58:53,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:58:53,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:58:57,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:58:57,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:58:57,607 INFO L134 CoverageAnalysis]: Checked inductivity of 14885 backedges. 5358 proven. 8742 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2021-05-02 18:58:57,607 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:58:57,607 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375172827] [2021-05-02 18:58:57,607 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375172827] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:58:57,608 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417161313] [2021-05-02 18:58:57,608 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:58:57,876 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 119 check-sat command(s) [2021-05-02 18:58:57,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:58:57,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 32 conjunts are in the unsatisfiable core [2021-05-02 18:58:57,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:58:58,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:58,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:58,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:58,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:58,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:58,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:58,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:58,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:58,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:58,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:58,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:58,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:58,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:58,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:58,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:58,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:58,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:58,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:59,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:59,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:59,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:59,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:59,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:59,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:59,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:59,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:59,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:59,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:59,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:59,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:59,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:59,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:59,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:59,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:59,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:59,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:59,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:59,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:00,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:00,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:00,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:00,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:00,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:00,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:00,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:00,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:00,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:00,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:00,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:00,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:00,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:00,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:00,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:00,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:00,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:00,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:00,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:00,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:01,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:01,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:01,210 INFO L134 CoverageAnalysis]: Checked inductivity of 14885 backedges. 5487 proven. 841 refuted. 0 times theorem prover too weak. 8557 trivial. 0 not checked. [2021-05-02 18:59:01,210 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417161313] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:59:01,210 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:59:01,210 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 32] total 127 [2021-05-02 18:59:01,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641114185] [2021-05-02 18:59:01,211 INFO L460 AbstractCegarLoop]: Interpolant automaton has 127 states [2021-05-02 18:59:01,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:59:01,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2021-05-02 18:59:01,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7877, Invalid=8125, Unknown=0, NotChecked=0, Total=16002 [2021-05-02 18:59:01,212 INFO L87 Difference]: Start difference. First operand 258 states and 288 transitions. Second operand has 127 states, 127 states have (on average 2.0708661417322833) internal successors, (263), 126 states have internal predecessors, (263), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:59:13,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:59:13,036 INFO L93 Difference]: Finished difference Result 263 states and 295 transitions. [2021-05-02 18:59:13,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2021-05-02 18:59:13,037 INFO L78 Accepts]: Start accepts. Automaton has has 127 states, 127 states have (on average 2.0708661417322833) internal successors, (263), 126 states have internal predecessors, (263), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 257 [2021-05-02 18:59:13,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:59:13,038 INFO L225 Difference]: With dead ends: 263 [2021-05-02 18:59:13,038 INFO L226 Difference]: Without dead ends: 263 [2021-05-02 18:59:13,040 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7719 ImplicationChecksByTransitivity, 17842.5ms TimeCoverageRelationStatistics Valid=23625, Invalid=39125, Unknown=0, NotChecked=0, Total=62750 [2021-05-02 18:59:13,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-05-02 18:59:13,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 262. [2021-05-02 18:59:13,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 257 states have (on average 1.1245136186770428) internal successors, (289), 257 states have internal predecessors, (289), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:59:13,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 293 transitions. [2021-05-02 18:59:13,042 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 293 transitions. Word has length 257 [2021-05-02 18:59:13,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:59:13,042 INFO L480 AbstractCegarLoop]: Abstraction has 262 states and 293 transitions. [2021-05-02 18:59:13,042 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 127 states, 127 states have (on average 2.0708661417322833) internal successors, (263), 126 states have internal predecessors, (263), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:59:13,042 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 293 transitions. [2021-05-02 18:59:13,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-05-02 18:59:13,043 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:59:13,043 INFO L523 BasicCegarLoop]: trace histogram [124, 94, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:59:13,251 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable94 [2021-05-02 18:59:13,252 INFO L428 AbstractCegarLoop]: === Iteration 96 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:59:13,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:59:13,252 INFO L82 PathProgramCache]: Analyzing trace with hash 312083837, now seen corresponding path program 91 times [2021-05-02 18:59:13,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:59:13,252 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861272171] [2021-05-02 18:59:13,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:59:13,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:59:17,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:59:17,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:59:17,526 INFO L134 CoverageAnalysis]: Checked inductivity of 15377 backedges. 5605 proven. 8930 refuted. 0 times theorem prover too weak. 842 trivial. 0 not checked. [2021-05-02 18:59:17,526 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:59:17,527 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861272171] [2021-05-02 18:59:17,527 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861272171] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:59:17,527 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865219896] [2021-05-02 18:59:17,527 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:59:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:59:17,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 96 conjunts are in the unsatisfiable core [2021-05-02 18:59:17,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:59:17,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:17,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:18,180 INFO L134 CoverageAnalysis]: Checked inductivity of 15377 backedges. 5605 proven. 8930 refuted. 0 times theorem prover too weak. 842 trivial. 0 not checked. [2021-05-02 18:59:18,181 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865219896] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:59:18,181 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:59:18,181 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 97] total 99 [2021-05-02 18:59:18,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629783092] [2021-05-02 18:59:18,181 INFO L460 AbstractCegarLoop]: Interpolant automaton has 99 states [2021-05-02 18:59:18,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:59:18,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-05-02 18:59:18,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2021-05-02 18:59:18,182 INFO L87 Difference]: Start difference. First operand 262 states and 293 transitions. Second operand has 99 states, 99 states have (on average 2.0707070707070705) internal successors, (205), 98 states have internal predecessors, (205), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:59:25,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:59:25,451 INFO L93 Difference]: Finished difference Result 264 states and 295 transitions. [2021-05-02 18:59:25,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-05-02 18:59:25,452 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.0707070707070705) internal successors, (205), 98 states have internal predecessors, (205), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 261 [2021-05-02 18:59:25,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:59:25,453 INFO L225 Difference]: With dead ends: 264 [2021-05-02 18:59:25,453 INFO L226 Difference]: Without dead ends: 264 [2021-05-02 18:59:25,454 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4838 ImplicationChecksByTransitivity, 10937.4ms TimeCoverageRelationStatistics Valid=14066, Invalid=23376, Unknown=0, NotChecked=0, Total=37442 [2021-05-02 18:59:25,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-05-02 18:59:25,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2021-05-02 18:59:25,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 259 states have (on average 1.1235521235521235) internal successors, (291), 259 states have internal predecessors, (291), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:59:25,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 295 transitions. [2021-05-02 18:59:25,456 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 295 transitions. Word has length 261 [2021-05-02 18:59:25,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:59:25,456 INFO L480 AbstractCegarLoop]: Abstraction has 264 states and 295 transitions. [2021-05-02 18:59:25,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 99 states, 99 states have (on average 2.0707070707070705) internal successors, (205), 98 states have internal predecessors, (205), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:59:25,456 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 295 transitions. [2021-05-02 18:59:25,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-05-02 18:59:25,457 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:59:25,457 INFO L523 BasicCegarLoop]: trace histogram [125, 95, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:59:25,658 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:59:25,658 INFO L428 AbstractCegarLoop]: === Iteration 97 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:59:25,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:59:25,658 INFO L82 PathProgramCache]: Analyzing trace with hash -140523815, now seen corresponding path program 92 times [2021-05-02 18:59:25,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:59:25,658 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710020910] [2021-05-02 18:59:25,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:59:25,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:59:30,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:59:30,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:59:30,027 INFO L134 CoverageAnalysis]: Checked inductivity of 15626 backedges. 5664 proven. 9120 refuted. 0 times theorem prover too weak. 842 trivial. 0 not checked. [2021-05-02 18:59:30,027 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:59:30,027 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710020910] [2021-05-02 18:59:30,027 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710020910] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:59:30,027 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656925503] [2021-05-02 18:59:30,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:59:30,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:59:30,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:59:30,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 97 conjunts are in the unsatisfiable core [2021-05-02 18:59:30,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:59:30,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:30,691 INFO L134 CoverageAnalysis]: Checked inductivity of 15626 backedges. 5664 proven. 9120 refuted. 0 times theorem prover too weak. 842 trivial. 0 not checked. [2021-05-02 18:59:30,691 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656925503] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:59:30,691 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:59:30,691 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 98] total 100 [2021-05-02 18:59:30,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799377253] [2021-05-02 18:59:30,692 INFO L460 AbstractCegarLoop]: Interpolant automaton has 100 states [2021-05-02 18:59:30,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:59:30,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-05-02 18:59:30,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 18:59:30,693 INFO L87 Difference]: Start difference. First operand 264 states and 295 transitions. Second operand has 100 states, 100 states have (on average 2.07) internal successors, (207), 99 states have internal predecessors, (207), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:59:38,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:59:38,268 INFO L93 Difference]: Finished difference Result 266 states and 297 transitions. [2021-05-02 18:59:38,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-05-02 18:59:38,269 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.07) internal successors, (207), 99 states have internal predecessors, (207), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 263 [2021-05-02 18:59:38,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:59:38,270 INFO L225 Difference]: With dead ends: 266 [2021-05-02 18:59:38,270 INFO L226 Difference]: Without dead ends: 266 [2021-05-02 18:59:38,271 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4937 ImplicationChecksByTransitivity, 11447.2ms TimeCoverageRelationStatistics Valid=14358, Invalid=23862, Unknown=0, NotChecked=0, Total=38220 [2021-05-02 18:59:38,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-05-02 18:59:38,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2021-05-02 18:59:38,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 261 states have (on average 1.1226053639846743) internal successors, (293), 261 states have internal predecessors, (293), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:59:38,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 297 transitions. [2021-05-02 18:59:38,273 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 297 transitions. Word has length 263 [2021-05-02 18:59:38,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:59:38,274 INFO L480 AbstractCegarLoop]: Abstraction has 266 states and 297 transitions. [2021-05-02 18:59:38,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 100 states, 100 states have (on average 2.07) internal successors, (207), 99 states have internal predecessors, (207), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:59:38,274 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 297 transitions. [2021-05-02 18:59:38,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-05-02 18:59:38,274 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:59:38,275 INFO L523 BasicCegarLoop]: trace histogram [126, 96, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:59:38,475 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2021-05-02 18:59:38,475 INFO L428 AbstractCegarLoop]: === Iteration 98 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:59:38,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:59:38,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1304780491, now seen corresponding path program 93 times [2021-05-02 18:59:38,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:59:38,476 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748215068] [2021-05-02 18:59:38,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:59:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:59:42,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:59:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:59:42,893 INFO L134 CoverageAnalysis]: Checked inductivity of 15877 backedges. 5723 proven. 9312 refuted. 0 times theorem prover too weak. 842 trivial. 0 not checked. [2021-05-02 18:59:42,893 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:59:42,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748215068] [2021-05-02 18:59:42,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748215068] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:59:42,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817271435] [2021-05-02 18:59:42,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:59:43,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 62 check-sat command(s) [2021-05-02 18:59:43,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:59:43,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-02 18:59:43,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:59:43,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:43,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:43,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:43,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:43,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:43,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:43,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:43,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:43,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:43,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:43,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:43,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:43,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:43,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:44,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:44,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:44,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:44,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:44,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:44,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:44,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:44,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:44,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:44,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:44,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:44,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:44,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:44,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:44,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:44,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:44,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:44,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:44,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:45,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:46,785 INFO L134 CoverageAnalysis]: Checked inductivity of 15877 backedges. 5856 proven. 900 refuted. 0 times theorem prover too weak. 9121 trivial. 0 not checked. [2021-05-02 18:59:46,785 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817271435] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:59:46,785 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:59:46,785 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 33] total 131 [2021-05-02 18:59:46,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089717467] [2021-05-02 18:59:46,786 INFO L460 AbstractCegarLoop]: Interpolant automaton has 131 states [2021-05-02 18:59:46,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:59:46,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2021-05-02 18:59:46,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8387, Invalid=8643, Unknown=0, NotChecked=0, Total=17030 [2021-05-02 18:59:46,788 INFO L87 Difference]: Start difference. First operand 266 states and 297 transitions. Second operand has 131 states, 131 states have (on average 2.068702290076336) internal successors, (271), 130 states have internal predecessors, (271), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:00:00,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:00:00,025 INFO L93 Difference]: Finished difference Result 271 states and 304 transitions. [2021-05-02 19:00:00,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2021-05-02 19:00:00,026 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 2.068702290076336) internal successors, (271), 130 states have internal predecessors, (271), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 265 [2021-05-02 19:00:00,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:00:00,027 INFO L225 Difference]: With dead ends: 271 [2021-05-02 19:00:00,027 INFO L226 Difference]: Without dead ends: 271 [2021-05-02 19:00:00,030 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8224 ImplicationChecksByTransitivity, 19789.2ms TimeCoverageRelationStatistics Valid=25155, Invalid=41667, Unknown=0, NotChecked=0, Total=66822 [2021-05-02 19:00:00,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-05-02 19:00:00,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 270. [2021-05-02 19:00:00,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 265 states have (on average 1.1245283018867924) internal successors, (298), 265 states have internal predecessors, (298), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:00:00,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 302 transitions. [2021-05-02 19:00:00,032 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 302 transitions. Word has length 265 [2021-05-02 19:00:00,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:00:00,032 INFO L480 AbstractCegarLoop]: Abstraction has 270 states and 302 transitions. [2021-05-02 19:00:00,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 131 states, 131 states have (on average 2.068702290076336) internal successors, (271), 130 states have internal predecessors, (271), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:00:00,032 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 302 transitions. [2021-05-02 19:00:00,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-05-02 19:00:00,033 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:00:00,033 INFO L523 BasicCegarLoop]: trace histogram [128, 97, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:00:00,233 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:00:00,234 INFO L428 AbstractCegarLoop]: === Iteration 99 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:00:00,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:00:00,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1331389108, now seen corresponding path program 94 times [2021-05-02 19:00:00,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:00:00,234 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843663539] [2021-05-02 19:00:00,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:00:00,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:00:05,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:00:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:00:05,633 INFO L134 CoverageAnalysis]: Checked inductivity of 16385 backedges. 5978 proven. 9506 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2021-05-02 19:00:05,634 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:00:05,634 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843663539] [2021-05-02 19:00:05,634 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843663539] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:00:05,634 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322657626] [2021-05-02 19:00:05,634 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:00:05,737 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 19:00:05,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:00:05,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 99 conjunts are in the unsatisfiable core [2021-05-02 19:00:05,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:00:05,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:05,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:06,483 INFO L134 CoverageAnalysis]: Checked inductivity of 16385 backedges. 5978 proven. 9506 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2021-05-02 19:00:06,484 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322657626] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:00:06,484 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:00:06,484 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 100] total 102 [2021-05-02 19:00:06,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300486475] [2021-05-02 19:00:06,484 INFO L460 AbstractCegarLoop]: Interpolant automaton has 102 states [2021-05-02 19:00:06,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:00:06,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-05-02 19:00:06,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5052, Invalid=5250, Unknown=0, NotChecked=0, Total=10302 [2021-05-02 19:00:06,485 INFO L87 Difference]: Start difference. First operand 270 states and 302 transitions. Second operand has 102 states, 102 states have (on average 2.0686274509803924) internal successors, (211), 101 states have internal predecessors, (211), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:00:15,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:00:15,522 INFO L93 Difference]: Finished difference Result 272 states and 304 transitions. [2021-05-02 19:00:15,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-05-02 19:00:15,523 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 2.0686274509803924) internal successors, (211), 101 states have internal predecessors, (211), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 269 [2021-05-02 19:00:15,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:00:15,524 INFO L225 Difference]: With dead ends: 272 [2021-05-02 19:00:15,524 INFO L226 Difference]: Without dead ends: 272 [2021-05-02 19:00:15,526 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5138 ImplicationChecksByTransitivity, 13716.0ms TimeCoverageRelationStatistics Valid=14951, Invalid=24849, Unknown=0, NotChecked=0, Total=39800 [2021-05-02 19:00:15,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-05-02 19:00:15,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2021-05-02 19:00:15,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 267 states have (on average 1.1235955056179776) internal successors, (300), 267 states have internal predecessors, (300), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:00:15,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 304 transitions. [2021-05-02 19:00:15,528 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 304 transitions. Word has length 269 [2021-05-02 19:00:15,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:00:15,529 INFO L480 AbstractCegarLoop]: Abstraction has 272 states and 304 transitions. [2021-05-02 19:00:15,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 102 states, 102 states have (on average 2.0686274509803924) internal successors, (211), 101 states have internal predecessors, (211), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:00:15,529 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 304 transitions. [2021-05-02 19:00:15,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-05-02 19:00:15,530 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:00:15,530 INFO L523 BasicCegarLoop]: trace histogram [129, 98, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:00:15,730 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,96 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:00:15,730 INFO L428 AbstractCegarLoop]: === Iteration 100 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:00:15,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:00:15,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1594801496, now seen corresponding path program 95 times [2021-05-02 19:00:15,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:00:15,731 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146078931] [2021-05-02 19:00:15,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:00:15,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:00:21,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:00:21,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:00:21,347 INFO L134 CoverageAnalysis]: Checked inductivity of 16642 backedges. 6039 proven. 9702 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2021-05-02 19:00:21,347 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:00:21,348 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146078931] [2021-05-02 19:00:21,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146078931] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:00:21,348 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204995005] [2021-05-02 19:00:21,348 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:00:21,510 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 130 check-sat command(s) [2021-05-02 19:00:21,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:00:21,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 100 conjunts are in the unsatisfiable core [2021-05-02 19:00:21,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:00:21,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:21,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:22,273 INFO L134 CoverageAnalysis]: Checked inductivity of 16642 backedges. 6039 proven. 9702 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2021-05-02 19:00:22,273 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204995005] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:00:22,273 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:00:22,273 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 101] total 103 [2021-05-02 19:00:22,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575166440] [2021-05-02 19:00:22,274 INFO L460 AbstractCegarLoop]: Interpolant automaton has 103 states [2021-05-02 19:00:22,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:00:22,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-05-02 19:00:22,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2021-05-02 19:00:22,275 INFO L87 Difference]: Start difference. First operand 272 states and 304 transitions. Second operand has 103 states, 103 states have (on average 2.0679611650485437) internal successors, (213), 102 states have internal predecessors, (213), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:00:31,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:00:31,461 INFO L93 Difference]: Finished difference Result 274 states and 306 transitions. [2021-05-02 19:00:31,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-05-02 19:00:31,462 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.0679611650485437) internal successors, (213), 102 states have internal predecessors, (213), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 271 [2021-05-02 19:00:31,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:00:31,462 INFO L225 Difference]: With dead ends: 274 [2021-05-02 19:00:31,463 INFO L226 Difference]: Without dead ends: 274 [2021-05-02 19:00:31,464 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5240 ImplicationChecksByTransitivity, 14025.9ms TimeCoverageRelationStatistics Valid=15252, Invalid=25350, Unknown=0, NotChecked=0, Total=40602 [2021-05-02 19:00:31,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-05-02 19:00:31,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2021-05-02 19:00:31,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 269 states have (on average 1.1226765799256506) internal successors, (302), 269 states have internal predecessors, (302), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:00:31,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 306 transitions. [2021-05-02 19:00:31,466 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 306 transitions. Word has length 271 [2021-05-02 19:00:31,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:00:31,467 INFO L480 AbstractCegarLoop]: Abstraction has 274 states and 306 transitions. [2021-05-02 19:00:31,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 103 states, 103 states have (on average 2.0679611650485437) internal successors, (213), 102 states have internal predecessors, (213), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:00:31,467 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 306 transitions. [2021-05-02 19:00:31,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-05-02 19:00:31,468 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:00:31,468 INFO L523 BasicCegarLoop]: trace histogram [130, 99, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:00:31,682 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2021-05-02 19:00:31,683 INFO L428 AbstractCegarLoop]: === Iteration 101 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:00:31,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:00:31,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1331035900, now seen corresponding path program 96 times [2021-05-02 19:00:31,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:00:31,683 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828019120] [2021-05-02 19:00:31,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:00:31,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:00:37,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:00:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:00:37,409 INFO L134 CoverageAnalysis]: Checked inductivity of 16901 backedges. 6100 proven. 9900 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2021-05-02 19:00:37,409 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:00:37,409 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828019120] [2021-05-02 19:00:37,410 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828019120] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:00:37,410 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8081798] [2021-05-02 19:00:37,410 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:00:37,786 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 127 check-sat command(s) [2021-05-02 19:00:37,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:00:37,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-02 19:00:37,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:00:38,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:38,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:38,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:38,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:38,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:38,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:38,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:38,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:38,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:38,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:38,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:38,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:38,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:38,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:39,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:39,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:39,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:39,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:39,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:39,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:39,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:39,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:39,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:39,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:39,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:39,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:39,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:39,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:39,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:39,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:40,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:40,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:40,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:40,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:40,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:40,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:40,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:40,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:40,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:40,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:40,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:40,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:40,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:40,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:40,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:40,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:41,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:41,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:41,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:41,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:41,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:41,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:41,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:41,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:41,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:41,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:41,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:41,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:41,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:41,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:42,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:42,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:42,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:42,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:42,383 INFO L134 CoverageAnalysis]: Checked inductivity of 16901 backedges. 6237 proven. 961 refuted. 0 times theorem prover too weak. 9703 trivial. 0 not checked. [2021-05-02 19:00:42,383 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8081798] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:00:42,383 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:00:42,384 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 34] total 135 [2021-05-02 19:00:42,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773984488] [2021-05-02 19:00:42,384 INFO L460 AbstractCegarLoop]: Interpolant automaton has 135 states [2021-05-02 19:00:42,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:00:42,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2021-05-02 19:00:42,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8913, Invalid=9177, Unknown=0, NotChecked=0, Total=18090 [2021-05-02 19:00:42,386 INFO L87 Difference]: Start difference. First operand 274 states and 306 transitions. Second operand has 135 states, 135 states have (on average 2.066666666666667) internal successors, (279), 134 states have internal predecessors, (279), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:00:58,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:00:58,882 INFO L93 Difference]: Finished difference Result 279 states and 313 transitions. [2021-05-02 19:00:58,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2021-05-02 19:00:58,884 INFO L78 Accepts]: Start accepts. Automaton has has 135 states, 135 states have (on average 2.066666666666667) internal successors, (279), 134 states have internal predecessors, (279), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 273 [2021-05-02 19:00:58,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:00:58,885 INFO L225 Difference]: With dead ends: 279 [2021-05-02 19:00:58,885 INFO L226 Difference]: Without dead ends: 279 [2021-05-02 19:00:58,887 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8745 ImplicationChecksByTransitivity, 24819.6ms TimeCoverageRelationStatistics Valid=26733, Invalid=44289, Unknown=0, NotChecked=0, Total=71022 [2021-05-02 19:00:58,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-05-02 19:00:58,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 278. [2021-05-02 19:00:58,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 273 states have (on average 1.1245421245421245) internal successors, (307), 273 states have internal predecessors, (307), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:00:58,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 311 transitions. [2021-05-02 19:00:58,890 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 311 transitions. Word has length 273 [2021-05-02 19:00:58,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:00:58,890 INFO L480 AbstractCegarLoop]: Abstraction has 278 states and 311 transitions. [2021-05-02 19:00:58,890 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 135 states, 135 states have (on average 2.066666666666667) internal successors, (279), 134 states have internal predecessors, (279), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:00:58,890 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 311 transitions. [2021-05-02 19:00:58,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-05-02 19:00:58,891 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:00:58,891 INFO L523 BasicCegarLoop]: trace histogram [132, 100, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:00:59,092 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2021-05-02 19:00:59,093 INFO L428 AbstractCegarLoop]: === Iteration 102 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:00:59,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:00:59,094 INFO L82 PathProgramCache]: Analyzing trace with hash -599316133, now seen corresponding path program 97 times [2021-05-02 19:00:59,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:00:59,094 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796008561] [2021-05-02 19:00:59,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:00:59,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:01:04,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:01:04,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:01:04,651 INFO L134 CoverageAnalysis]: Checked inductivity of 17425 backedges. 6363 proven. 10100 refuted. 0 times theorem prover too weak. 962 trivial. 0 not checked. [2021-05-02 19:01:04,651 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:01:04,651 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796008561] [2021-05-02 19:01:04,651 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796008561] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:01:04,652 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472319524] [2021-05-02 19:01:04,652 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:01:04,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:01:04,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 102 conjunts are in the unsatisfiable core [2021-05-02 19:01:04,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:01:04,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:04,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:05,526 INFO L134 CoverageAnalysis]: Checked inductivity of 17425 backedges. 6363 proven. 10100 refuted. 0 times theorem prover too weak. 962 trivial. 0 not checked. [2021-05-02 19:01:05,526 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472319524] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:01:05,526 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:01:05,526 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 103] total 105 [2021-05-02 19:01:05,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564478429] [2021-05-02 19:01:05,527 INFO L460 AbstractCegarLoop]: Interpolant automaton has 105 states [2021-05-02 19:01:05,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:01:05,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2021-05-02 19:01:05,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5358, Invalid=5562, Unknown=0, NotChecked=0, Total=10920 [2021-05-02 19:01:05,528 INFO L87 Difference]: Start difference. First operand 278 states and 311 transitions. Second operand has 105 states, 105 states have (on average 2.066666666666667) internal successors, (217), 104 states have internal predecessors, (217), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:01:14,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:01:14,875 INFO L93 Difference]: Finished difference Result 280 states and 313 transitions. [2021-05-02 19:01:14,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-05-02 19:01:14,876 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 2.066666666666667) internal successors, (217), 104 states have internal predecessors, (217), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 277 [2021-05-02 19:01:14,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:01:14,877 INFO L225 Difference]: With dead ends: 280 [2021-05-02 19:01:14,877 INFO L226 Difference]: Without dead ends: 280 [2021-05-02 19:01:14,879 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5447 ImplicationChecksByTransitivity, 14189.8ms TimeCoverageRelationStatistics Valid=15863, Invalid=26367, Unknown=0, NotChecked=0, Total=42230 [2021-05-02 19:01:14,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-05-02 19:01:14,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2021-05-02 19:01:14,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 275 states have (on average 1.1236363636363635) internal successors, (309), 275 states have internal predecessors, (309), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:01:14,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 313 transitions. [2021-05-02 19:01:14,881 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 313 transitions. Word has length 277 [2021-05-02 19:01:14,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:01:14,881 INFO L480 AbstractCegarLoop]: Abstraction has 280 states and 313 transitions. [2021-05-02 19:01:14,881 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 105 states, 105 states have (on average 2.066666666666667) internal successors, (217), 104 states have internal predecessors, (217), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:01:14,881 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 313 transitions. [2021-05-02 19:01:14,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2021-05-02 19:01:14,882 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:01:14,882 INFO L523 BasicCegarLoop]: trace histogram [133, 101, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:01:15,083 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:01:15,083 INFO L428 AbstractCegarLoop]: === Iteration 103 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:01:15,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:01:15,083 INFO L82 PathProgramCache]: Analyzing trace with hash 615953079, now seen corresponding path program 98 times [2021-05-02 19:01:15,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:01:15,084 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536348410] [2021-05-02 19:01:15,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:01:15,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:01:21,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:01:21,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:01:21,043 INFO L134 CoverageAnalysis]: Checked inductivity of 17690 backedges. 6426 proven. 10302 refuted. 0 times theorem prover too weak. 962 trivial. 0 not checked. [2021-05-02 19:01:21,043 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:01:21,043 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536348410] [2021-05-02 19:01:21,044 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536348410] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:01:21,044 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114053925] [2021-05-02 19:01:21,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:01:21,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 19:01:21,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:01:21,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 103 conjunts are in the unsatisfiable core [2021-05-02 19:01:21,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:01:21,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:21,984 INFO L134 CoverageAnalysis]: Checked inductivity of 17690 backedges. 6426 proven. 10302 refuted. 0 times theorem prover too weak. 962 trivial. 0 not checked. [2021-05-02 19:01:21,984 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114053925] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:01:21,984 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:01:21,985 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 104] total 106 [2021-05-02 19:01:21,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364610341] [2021-05-02 19:01:21,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 106 states [2021-05-02 19:01:21,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:01:21,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2021-05-02 19:01:21,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5462, Invalid=5668, Unknown=0, NotChecked=0, Total=11130 [2021-05-02 19:01:21,986 INFO L87 Difference]: Start difference. First operand 280 states and 313 transitions. Second operand has 106 states, 106 states have (on average 2.0660377358490565) internal successors, (219), 105 states have internal predecessors, (219), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:01:32,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:01:32,012 INFO L93 Difference]: Finished difference Result 282 states and 315 transitions. [2021-05-02 19:01:32,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-05-02 19:01:32,013 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 2.0660377358490565) internal successors, (219), 105 states have internal predecessors, (219), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 279 [2021-05-02 19:01:32,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:01:32,014 INFO L225 Difference]: With dead ends: 282 [2021-05-02 19:01:32,014 INFO L226 Difference]: Without dead ends: 282 [2021-05-02 19:01:32,016 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5552 ImplicationChecksByTransitivity, 15159.9ms TimeCoverageRelationStatistics Valid=16173, Invalid=26883, Unknown=0, NotChecked=0, Total=43056 [2021-05-02 19:01:32,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-05-02 19:01:32,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2021-05-02 19:01:32,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 277 states have (on average 1.1227436823104693) internal successors, (311), 277 states have internal predecessors, (311), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:01:32,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 315 transitions. [2021-05-02 19:01:32,018 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 315 transitions. Word has length 279 [2021-05-02 19:01:32,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:01:32,018 INFO L480 AbstractCegarLoop]: Abstraction has 282 states and 315 transitions. [2021-05-02 19:01:32,018 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 106 states, 106 states have (on average 2.0660377358490565) internal successors, (219), 105 states have internal predecessors, (219), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:01:32,018 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 315 transitions. [2021-05-02 19:01:32,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-05-02 19:01:32,019 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:01:32,019 INFO L523 BasicCegarLoop]: trace histogram [134, 102, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:01:32,219 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-05-02 19:01:32,220 INFO L428 AbstractCegarLoop]: === Iteration 104 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:01:32,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:01:32,220 INFO L82 PathProgramCache]: Analyzing trace with hash 258561299, now seen corresponding path program 99 times [2021-05-02 19:01:32,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:01:32,220 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037552585] [2021-05-02 19:01:32,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:01:32,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:01:38,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:01:38,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:01:38,565 INFO L134 CoverageAnalysis]: Checked inductivity of 17957 backedges. 6489 proven. 10506 refuted. 0 times theorem prover too weak. 962 trivial. 0 not checked. [2021-05-02 19:01:38,565 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:01:38,565 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037552585] [2021-05-02 19:01:38,565 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037552585] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:01:38,565 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804175605] [2021-05-02 19:01:38,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:01:38,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 66 check-sat command(s) [2021-05-02 19:01:38,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:01:38,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 35 conjunts are in the unsatisfiable core [2021-05-02 19:01:38,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:01:39,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:41,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:41,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:41,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:41,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:41,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:41,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:41,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:41,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:41,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:41,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:41,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:41,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:41,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:41,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:41,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:41,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:42,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:42,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:42,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:42,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:42,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:42,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:42,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:42,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:42,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:42,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:42,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:42,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:43,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:43,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:43,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:43,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:43,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:43,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:43,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:43,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:43,636 INFO L134 CoverageAnalysis]: Checked inductivity of 17957 backedges. 6630 proven. 1024 refuted. 0 times theorem prover too weak. 10303 trivial. 0 not checked. [2021-05-02 19:01:43,636 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804175605] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:01:43,636 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:01:43,637 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 35] total 139 [2021-05-02 19:01:43,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887619304] [2021-05-02 19:01:43,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 139 states [2021-05-02 19:01:43,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:01:43,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2021-05-02 19:01:43,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9455, Invalid=9727, Unknown=0, NotChecked=0, Total=19182 [2021-05-02 19:01:43,639 INFO L87 Difference]: Start difference. First operand 282 states and 315 transitions. Second operand has 139 states, 139 states have (on average 2.064748201438849) internal successors, (287), 138 states have internal predecessors, (287), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:02:00,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:02:00,603 INFO L93 Difference]: Finished difference Result 287 states and 322 transitions. [2021-05-02 19:02:00,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2021-05-02 19:02:00,604 INFO L78 Accepts]: Start accepts. Automaton has has 139 states, 139 states have (on average 2.064748201438849) internal successors, (287), 138 states have internal predecessors, (287), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 281 [2021-05-02 19:02:00,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:02:00,605 INFO L225 Difference]: With dead ends: 287 [2021-05-02 19:02:00,605 INFO L226 Difference]: Without dead ends: 287 [2021-05-02 19:02:00,608 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9282 ImplicationChecksByTransitivity, 26096.5ms TimeCoverageRelationStatistics Valid=28359, Invalid=46991, Unknown=0, NotChecked=0, Total=75350 [2021-05-02 19:02:00,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-05-02 19:02:00,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 286. [2021-05-02 19:02:00,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 281 states have (on average 1.1245551601423487) internal successors, (316), 281 states have internal predecessors, (316), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:02:00,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 320 transitions. [2021-05-02 19:02:00,610 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 320 transitions. Word has length 281 [2021-05-02 19:02:00,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:02:00,610 INFO L480 AbstractCegarLoop]: Abstraction has 286 states and 320 transitions. [2021-05-02 19:02:00,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 139 states, 139 states have (on average 2.064748201438849) internal successors, (287), 138 states have internal predecessors, (287), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:02:00,610 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 320 transitions. [2021-05-02 19:02:00,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-05-02 19:02:00,611 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:02:00,611 INFO L523 BasicCegarLoop]: trace histogram [136, 103, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:02:00,824 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-05-02 19:02:00,825 INFO L428 AbstractCegarLoop]: === Iteration 105 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:02:00,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:02:00,825 INFO L82 PathProgramCache]: Analyzing trace with hash -873883222, now seen corresponding path program 100 times [2021-05-02 19:02:00,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:02:00,825 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317176330] [2021-05-02 19:02:00,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:02:00,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:02:07,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:02:07,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:02:07,082 INFO L134 CoverageAnalysis]: Checked inductivity of 18497 backedges. 6760 proven. 10712 refuted. 0 times theorem prover too weak. 1025 trivial. 0 not checked. [2021-05-02 19:02:07,082 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:02:07,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317176330] [2021-05-02 19:02:07,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317176330] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:02:07,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718588309] [2021-05-02 19:02:07,082 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:02:07,183 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 19:02:07,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:02:07,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 105 conjunts are in the unsatisfiable core [2021-05-02 19:02:07,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:02:07,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:07,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:08,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:08,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:08,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:08,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:08,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:08,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:08,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:08,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:08,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:08,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:08,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:08,171 INFO L134 CoverageAnalysis]: Checked inductivity of 18497 backedges. 6760 proven. 10712 refuted. 0 times theorem prover too weak. 1025 trivial. 0 not checked. [2021-05-02 19:02:08,171 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718588309] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:02:08,171 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:02:08,171 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 106] total 108 [2021-05-02 19:02:08,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791856915] [2021-05-02 19:02:08,172 INFO L460 AbstractCegarLoop]: Interpolant automaton has 108 states [2021-05-02 19:02:08,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:02:08,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2021-05-02 19:02:08,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5673, Invalid=5883, Unknown=0, NotChecked=0, Total=11556 [2021-05-02 19:02:08,173 INFO L87 Difference]: Start difference. First operand 286 states and 320 transitions. Second operand has 108 states, 108 states have (on average 2.064814814814815) internal successors, (223), 107 states have internal predecessors, (223), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:02:18,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:02:18,047 INFO L93 Difference]: Finished difference Result 288 states and 322 transitions. [2021-05-02 19:02:18,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-05-02 19:02:18,048 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 2.064814814814815) internal successors, (223), 107 states have internal predecessors, (223), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 285 [2021-05-02 19:02:18,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:02:18,048 INFO L225 Difference]: With dead ends: 288 [2021-05-02 19:02:18,048 INFO L226 Difference]: Without dead ends: 288 [2021-05-02 19:02:18,050 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5765 ImplicationChecksByTransitivity, 15331.2ms TimeCoverageRelationStatistics Valid=16802, Invalid=27930, Unknown=0, NotChecked=0, Total=44732 [2021-05-02 19:02:18,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-05-02 19:02:18,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2021-05-02 19:02:18,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 283 states have (on average 1.1236749116607774) internal successors, (318), 283 states have internal predecessors, (318), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:02:18,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 322 transitions. [2021-05-02 19:02:18,052 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 322 transitions. Word has length 285 [2021-05-02 19:02:18,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:02:18,052 INFO L480 AbstractCegarLoop]: Abstraction has 288 states and 322 transitions. [2021-05-02 19:02:18,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 108 states, 108 states have (on average 2.064814814814815) internal successors, (223), 107 states have internal predecessors, (223), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:02:18,052 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 322 transitions. [2021-05-02 19:02:18,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-05-02 19:02:18,053 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:02:18,053 INFO L523 BasicCegarLoop]: trace histogram [137, 104, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:02:18,253 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2021-05-02 19:02:18,254 INFO L428 AbstractCegarLoop]: === Iteration 106 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:02:18,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:02:18,254 INFO L82 PathProgramCache]: Analyzing trace with hash 492308230, now seen corresponding path program 101 times [2021-05-02 19:02:18,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:02:18,254 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106061432] [2021-05-02 19:02:18,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:02:18,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:02:24,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:02:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:02:24,278 INFO L134 CoverageAnalysis]: Checked inductivity of 18770 backedges. 6825 proven. 10920 refuted. 0 times theorem prover too weak. 1025 trivial. 0 not checked. [2021-05-02 19:02:24,278 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:02:24,278 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106061432] [2021-05-02 19:02:24,278 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106061432] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:02:24,278 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766816506] [2021-05-02 19:02:24,278 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:02:24,450 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 138 check-sat command(s) [2021-05-02 19:02:24,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:02:24,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 106 conjunts are in the unsatisfiable core [2021-05-02 19:02:24,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:02:24,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:24,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:25,329 INFO L134 CoverageAnalysis]: Checked inductivity of 18770 backedges. 6825 proven. 10920 refuted. 0 times theorem prover too weak. 1025 trivial. 0 not checked. [2021-05-02 19:02:25,330 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766816506] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:02:25,330 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:02:25,330 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 107] total 109 [2021-05-02 19:02:25,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878516671] [2021-05-02 19:02:25,330 INFO L460 AbstractCegarLoop]: Interpolant automaton has 109 states [2021-05-02 19:02:25,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:02:25,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2021-05-02 19:02:25,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5780, Invalid=5992, Unknown=0, NotChecked=0, Total=11772 [2021-05-02 19:02:25,331 INFO L87 Difference]: Start difference. First operand 288 states and 322 transitions. Second operand has 109 states, 109 states have (on average 2.0642201834862384) internal successors, (225), 108 states have internal predecessors, (225), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:02:35,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:02:35,360 INFO L93 Difference]: Finished difference Result 290 states and 324 transitions. [2021-05-02 19:02:35,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-05-02 19:02:35,361 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 2.0642201834862384) internal successors, (225), 108 states have internal predecessors, (225), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 287 [2021-05-02 19:02:35,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:02:35,362 INFO L225 Difference]: With dead ends: 290 [2021-05-02 19:02:35,362 INFO L226 Difference]: Without dead ends: 290 [2021-05-02 19:02:35,363 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5873 ImplicationChecksByTransitivity, 15236.2ms TimeCoverageRelationStatistics Valid=17121, Invalid=28461, Unknown=0, NotChecked=0, Total=45582 [2021-05-02 19:02:35,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-05-02 19:02:35,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2021-05-02 19:02:35,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 285 states have (on average 1.1228070175438596) internal successors, (320), 285 states have internal predecessors, (320), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:02:35,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 324 transitions. [2021-05-02 19:02:35,365 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 324 transitions. Word has length 287 [2021-05-02 19:02:35,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:02:35,366 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 324 transitions. [2021-05-02 19:02:35,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 109 states, 109 states have (on average 2.0642201834862384) internal successors, (225), 108 states have internal predecessors, (225), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:02:35,366 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 324 transitions. [2021-05-02 19:02:35,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2021-05-02 19:02:35,366 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:02:35,367 INFO L523 BasicCegarLoop]: trace histogram [138, 105, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:02:35,567 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:02:35,567 INFO L428 AbstractCegarLoop]: === Iteration 107 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:02:35,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:02:35,567 INFO L82 PathProgramCache]: Analyzing trace with hash -857698974, now seen corresponding path program 102 times [2021-05-02 19:02:35,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:02:35,568 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380405803] [2021-05-02 19:02:35,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:02:35,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:02:41,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:02:41,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:02:41,794 INFO L134 CoverageAnalysis]: Checked inductivity of 19045 backedges. 6890 proven. 11130 refuted. 0 times theorem prover too weak. 1025 trivial. 0 not checked. [2021-05-02 19:02:41,794 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:02:41,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380405803] [2021-05-02 19:02:41,794 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380405803] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:02:41,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572649434] [2021-05-02 19:02:41,794 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:02:42,106 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 135 check-sat command(s) [2021-05-02 19:02:42,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:02:42,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 36 conjunts are in the unsatisfiable core [2021-05-02 19:02:42,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:02:42,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:42,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:42,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:42,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:42,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:42,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:42,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:42,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:43,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:43,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:43,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:43,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:43,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:43,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:43,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:43,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:43,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:43,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:43,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:43,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:43,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:43,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:43,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:43,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:44,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:44,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:44,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:44,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:44,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:44,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:44,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:44,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:44,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:44,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:44,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:44,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:44,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:44,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:45,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:45,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:45,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:45,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:45,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:45,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:45,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:45,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:45,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:45,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:45,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:45,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:45,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:45,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:46,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:46,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:46,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:46,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:46,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:46,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:46,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:46,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:46,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:46,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:46,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:46,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:47,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:47,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:47,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:47,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:47,365 INFO L134 CoverageAnalysis]: Checked inductivity of 19045 backedges. 7035 proven. 1089 refuted. 0 times theorem prover too weak. 10921 trivial. 0 not checked. [2021-05-02 19:02:47,365 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572649434] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:02:47,365 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:02:47,365 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 36] total 143 [2021-05-02 19:02:47,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127767529] [2021-05-02 19:02:47,366 INFO L460 AbstractCegarLoop]: Interpolant automaton has 143 states [2021-05-02 19:02:47,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:02:47,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2021-05-02 19:02:47,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10013, Invalid=10293, Unknown=0, NotChecked=0, Total=20306 [2021-05-02 19:02:47,368 INFO L87 Difference]: Start difference. First operand 290 states and 324 transitions. Second operand has 143 states, 143 states have (on average 2.062937062937063) internal successors, (295), 142 states have internal predecessors, (295), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:03:04,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:03:04,766 INFO L93 Difference]: Finished difference Result 295 states and 331 transitions. [2021-05-02 19:03:04,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2021-05-02 19:03:04,768 INFO L78 Accepts]: Start accepts. Automaton has has 143 states, 143 states have (on average 2.062937062937063) internal successors, (295), 142 states have internal predecessors, (295), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 289 [2021-05-02 19:03:04,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:03:04,768 INFO L225 Difference]: With dead ends: 295 [2021-05-02 19:03:04,768 INFO L226 Difference]: Without dead ends: 295 [2021-05-02 19:03:04,771 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 281 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9835 ImplicationChecksByTransitivity, 26851.8ms TimeCoverageRelationStatistics Valid=30033, Invalid=49773, Unknown=0, NotChecked=0, Total=79806 [2021-05-02 19:03:04,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-05-02 19:03:04,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 294. [2021-05-02 19:03:04,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 289 states have (on average 1.1245674740484428) internal successors, (325), 289 states have internal predecessors, (325), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:03:04,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 329 transitions. [2021-05-02 19:03:04,774 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 329 transitions. Word has length 289 [2021-05-02 19:03:04,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:03:04,774 INFO L480 AbstractCegarLoop]: Abstraction has 294 states and 329 transitions. [2021-05-02 19:03:04,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 143 states, 143 states have (on average 2.062937062937063) internal successors, (295), 142 states have internal predecessors, (295), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:03:04,774 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 329 transitions. [2021-05-02 19:03:04,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-05-02 19:03:04,775 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:03:04,775 INFO L523 BasicCegarLoop]: trace histogram [140, 106, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:03:04,986 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2021-05-02 19:03:04,986 INFO L428 AbstractCegarLoop]: === Iteration 108 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:03:04,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:03:04,986 INFO L82 PathProgramCache]: Analyzing trace with hash -407380423, now seen corresponding path program 103 times [2021-05-02 19:03:04,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:03:04,987 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314256448] [2021-05-02 19:03:04,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:03:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:03:11,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:03:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:03:11,787 INFO L134 CoverageAnalysis]: Checked inductivity of 19601 backedges. 7169 proven. 11342 refuted. 0 times theorem prover too weak. 1090 trivial. 0 not checked. [2021-05-02 19:03:11,787 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:03:11,788 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314256448] [2021-05-02 19:03:11,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314256448] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:03:11,788 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798378050] [2021-05-02 19:03:11,788 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:03:11,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:03:11,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 108 conjunts are in the unsatisfiable core [2021-05-02 19:03:11,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:03:11,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:11,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:11,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:11,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:11,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:11,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:11,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:11,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:11,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:11,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:11,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:11,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:11,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:11,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:11,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:11,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:11,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:11,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:11,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:11,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:11,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:11,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:11,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:11,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:11,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:11,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:11,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:11,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:11,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:11,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:12,724 INFO L134 CoverageAnalysis]: Checked inductivity of 19601 backedges. 7169 proven. 11342 refuted. 0 times theorem prover too weak. 1090 trivial. 0 not checked. [2021-05-02 19:03:12,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798378050] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:03:12,725 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:03:12,725 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 109] total 111 [2021-05-02 19:03:12,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451795012] [2021-05-02 19:03:12,725 INFO L460 AbstractCegarLoop]: Interpolant automaton has 111 states [2021-05-02 19:03:12,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:03:12,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2021-05-02 19:03:12,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5997, Invalid=6213, Unknown=0, NotChecked=0, Total=12210 [2021-05-02 19:03:12,726 INFO L87 Difference]: Start difference. First operand 294 states and 329 transitions. Second operand has 111 states, 111 states have (on average 2.063063063063063) internal successors, (229), 110 states have internal predecessors, (229), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:03:23,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:03:23,964 INFO L93 Difference]: Finished difference Result 296 states and 331 transitions. [2021-05-02 19:03:23,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-05-02 19:03:23,965 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 2.063063063063063) internal successors, (229), 110 states have internal predecessors, (229), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 293 [2021-05-02 19:03:23,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:03:23,965 INFO L225 Difference]: With dead ends: 296 [2021-05-02 19:03:23,965 INFO L226 Difference]: Without dead ends: 296 [2021-05-02 19:03:23,967 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6092 ImplicationChecksByTransitivity, 17384.5ms TimeCoverageRelationStatistics Valid=17768, Invalid=29538, Unknown=0, NotChecked=0, Total=47306 [2021-05-02 19:03:23,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-05-02 19:03:23,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2021-05-02 19:03:23,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 291 states have (on average 1.1237113402061856) internal successors, (327), 291 states have internal predecessors, (327), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:03:23,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 331 transitions. [2021-05-02 19:03:23,970 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 331 transitions. Word has length 293 [2021-05-02 19:03:23,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:03:23,970 INFO L480 AbstractCegarLoop]: Abstraction has 296 states and 331 transitions. [2021-05-02 19:03:23,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 111 states, 111 states have (on average 2.063063063063063) internal successors, (229), 110 states have internal predecessors, (229), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:03:23,970 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 331 transitions. [2021-05-02 19:03:23,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2021-05-02 19:03:23,971 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:03:23,971 INFO L523 BasicCegarLoop]: trace histogram [141, 107, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:03:24,172 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2021-05-02 19:03:24,173 INFO L428 AbstractCegarLoop]: === Iteration 109 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:03:24,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:03:24,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1459695509, now seen corresponding path program 104 times [2021-05-02 19:03:24,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:03:24,173 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696703745] [2021-05-02 19:03:24,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:03:24,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:03:31,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:03:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:03:31,278 INFO L134 CoverageAnalysis]: Checked inductivity of 19882 backedges. 7236 proven. 11556 refuted. 0 times theorem prover too weak. 1090 trivial. 0 not checked. [2021-05-02 19:03:31,278 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:03:31,278 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696703745] [2021-05-02 19:03:31,278 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696703745] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:03:31,278 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114902939] [2021-05-02 19:03:31,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:03:31,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 19:03:31,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:03:31,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 109 conjunts are in the unsatisfiable core [2021-05-02 19:03:31,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:03:31,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:31,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:32,374 INFO L134 CoverageAnalysis]: Checked inductivity of 19882 backedges. 7236 proven. 11556 refuted. 0 times theorem prover too weak. 1090 trivial. 0 not checked. [2021-05-02 19:03:32,374 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114902939] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:03:32,374 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:03:32,374 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 110] total 112 [2021-05-02 19:03:32,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934851549] [2021-05-02 19:03:32,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 112 states [2021-05-02 19:03:32,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:03:32,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2021-05-02 19:03:32,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6107, Invalid=6325, Unknown=0, NotChecked=0, Total=12432 [2021-05-02 19:03:32,383 INFO L87 Difference]: Start difference. First operand 296 states and 331 transitions. Second operand has 112 states, 112 states have (on average 2.0625) internal successors, (231), 111 states have internal predecessors, (231), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:03:43,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:03:43,806 INFO L93 Difference]: Finished difference Result 298 states and 333 transitions. [2021-05-02 19:03:43,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-05-02 19:03:43,807 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 2.0625) internal successors, (231), 111 states have internal predecessors, (231), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 295 [2021-05-02 19:03:43,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:03:43,808 INFO L225 Difference]: With dead ends: 298 [2021-05-02 19:03:43,808 INFO L226 Difference]: Without dead ends: 298 [2021-05-02 19:03:43,810 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6203 ImplicationChecksByTransitivity, 17848.1ms TimeCoverageRelationStatistics Valid=18096, Invalid=30084, Unknown=0, NotChecked=0, Total=48180 [2021-05-02 19:03:43,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-05-02 19:03:43,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2021-05-02 19:03:43,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 293 states have (on average 1.1228668941979523) internal successors, (329), 293 states have internal predecessors, (329), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:03:43,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 333 transitions. [2021-05-02 19:03:43,812 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 333 transitions. Word has length 295 [2021-05-02 19:03:43,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:03:43,812 INFO L480 AbstractCegarLoop]: Abstraction has 298 states and 333 transitions. [2021-05-02 19:03:43,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 112 states, 112 states have (on average 2.0625) internal successors, (231), 111 states have internal predecessors, (231), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 19:03:43,812 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 333 transitions. [2021-05-02 19:03:43,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2021-05-02 19:03:43,813 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:03:43,813 INFO L523 BasicCegarLoop]: trace histogram [142, 108, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:03:44,014 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,106 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:03:44,014 INFO L428 AbstractCegarLoop]: === Iteration 110 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:03:44,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:03:44,015 INFO L82 PathProgramCache]: Analyzing trace with hash 423336433, now seen corresponding path program 105 times [2021-05-02 19:03:44,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:03:44,015 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572481995] [2021-05-02 19:03:44,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:03:44,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:03:51,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:03:51,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:03:51,571 INFO L134 CoverageAnalysis]: Checked inductivity of 20165 backedges. 7303 proven. 11772 refuted. 0 times theorem prover too weak. 1090 trivial. 0 not checked. [2021-05-02 19:03:51,571 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:03:51,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572481995] [2021-05-02 19:03:51,571 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572481995] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:03:51,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155474219] [2021-05-02 19:03:51,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:03:51,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2021-05-02 19:03:51,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:03:51,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-02 19:03:51,710 INFO L286 TraceCheckSpWp]: Computing forward predicates...