/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/loop-lit/gj2007.c.i.p+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 18:15:37,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 18:15:37,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 18:15:37,676 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 18:15:37,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 18:15:37,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 18:15:37,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 18:15:37,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 18:15:37,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 18:15:37,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 18:15:37,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 18:15:37,700 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 18:15:37,700 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 18:15:37,703 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 18:15:37,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 18:15:37,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 18:15:37,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 18:15:37,711 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 18:15:37,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 18:15:37,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 18:15:37,723 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 18:15:37,724 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 18:15:37,725 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 18:15:37,728 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 18:15:37,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-02 18:15:37,734 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-02 18:15:37,734 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-02 18:15:37,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-02 18:15:37,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-02 18:15:37,737 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-02 18:15:37,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-02 18:15:37,738 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-02 18:15:37,740 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-02 18:15:37,740 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-02 18:15:37,741 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-02 18:15:37,742 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-02 18:15:37,742 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-02 18:15:37,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-02 18:15:37,743 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 18:15:37,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 18:15:37,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 18:15:37,748 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 18:15:37,799 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 18:15:37,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 18:15:37,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 18:15:37,801 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 18:15:37,801 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 18:15:37,802 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 18:15:37,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 18:15:37,802 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 18:15:37,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 18:15:37,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 18:15:37,802 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 18:15:37,802 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 18:15:37,802 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 18:15:37,802 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 18:15:37,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 18:15:37,803 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 18:15:37,803 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 18:15:37,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 18:15:37,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 18:15:37,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 18:15:37,803 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 18:15:37,804 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 18:15:37,804 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 18:15:38,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 18:15:38,173 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 18:15:38,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 18:15:38,177 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 18:15:38,177 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 18:15:38,178 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gj2007.c.i.p+nlh-reducer.c [2021-05-02 18:15:38,239 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d31fd031/e960393c4aeb42f98a0b752ee79061b5/FLAGe72a572ec [2021-05-02 18:15:38,721 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 18:15:38,721 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007.c.i.p+nlh-reducer.c [2021-05-02 18:15:38,747 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d31fd031/e960393c4aeb42f98a0b752ee79061b5/FLAGe72a572ec [2021-05-02 18:15:39,101 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d31fd031/e960393c4aeb42f98a0b752ee79061b5 [2021-05-02 18:15:39,103 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 18:15:39,105 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 18:15:39,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 18:15:39,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 18:15:39,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 18:15:39,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:15:39" (1/1) ... [2021-05-02 18:15:39,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15a123f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:15:39, skipping insertion in model container [2021-05-02 18:15:39,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:15:39" (1/1) ... [2021-05-02 18:15:39,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 18:15:39,160 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 18:15:39,397 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007.c.i.p+nlh-reducer.c[6448,6461] [2021-05-02 18:15:39,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:15:39,485 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 18:15:39,519 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007.c.i.p+nlh-reducer.c[6448,6461] [2021-05-02 18:15:39,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:15:39,553 INFO L208 MainTranslator]: Completed translation [2021-05-02 18:15:39,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:15:39 WrapperNode [2021-05-02 18:15:39,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 18:15:39,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 18:15:39,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 18:15:39,554 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 18:15:39,564 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:15:39" (1/1) ... [2021-05-02 18:15:39,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:15:39" (1/1) ... [2021-05-02 18:15:39,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:15:39" (1/1) ... [2021-05-02 18:15:39,574 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:15:39" (1/1) ... [2021-05-02 18:15:39,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:15:39" (1/1) ... [2021-05-02 18:15:39,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:15:39" (1/1) ... [2021-05-02 18:15:39,613 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:15:39" (1/1) ... [2021-05-02 18:15:39,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 18:15:39,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 18:15:39,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 18:15:39,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 18:15:39,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:15:39" (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 18:15:39,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 18:15:39,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 18:15:39,690 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 18:15:39,690 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 18:15:39,690 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 18:15:39,691 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 18:15:39,691 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 18:15:39,691 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 18:15:39,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 18:15:39,691 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 18:15:39,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 18:15:39,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 18:15:39,692 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 18:15:39,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 18:15:39,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 18:15:39,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 18:15:39,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 18:15:39,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 18:15:39,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 18:15:40,344 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 18:15:40,345 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-02 18:15:40,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:15:40 BoogieIcfgContainer [2021-05-02 18:15:40,346 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 18:15:40,347 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 18:15:40,347 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 18:15:40,348 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 18:15:40,350 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:15:40" (1/1) ... [2021-05-02 18:15:40,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:15:40 BasicIcfg [2021-05-02 18:15:40,372 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 18:15:40,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 18:15:40,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 18:15:40,376 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 18:15:40,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 06:15:39" (1/4) ... [2021-05-02 18:15:40,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e996dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:15:40, skipping insertion in model container [2021-05-02 18:15:40,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:15:39" (2/4) ... [2021-05-02 18:15:40,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e996dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:15:40, skipping insertion in model container [2021-05-02 18:15:40,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:15:40" (3/4) ... [2021-05-02 18:15:40,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e996dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:15:40, skipping insertion in model container [2021-05-02 18:15:40,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:15:40" (4/4) ... [2021-05-02 18:15:40,378 INFO L111 eAbstractionObserver]: Analyzing ICFG gj2007.c.i.p+nlh-reducer.cJordan [2021-05-02 18:15:40,383 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 18:15:40,386 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 18:15:40,400 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 18:15:40,416 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 18:15:40,416 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 18:15:40,417 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 18:15:40,417 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 18:15:40,417 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 18:15:40,417 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 18:15:40,417 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 18:15:40,417 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 18:15:40,431 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 143 states have (on average 1.965034965034965) internal successors, (281), 144 states have internal predecessors, (281), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 18:15:40,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-02 18:15:40,444 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:15:40,456 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:15:40,457 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:15:40,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:15:40,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1525673560, now seen corresponding path program 1 times [2021-05-02 18:15:40,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:15:40,469 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078027252] [2021-05-02 18:15:40,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:15:40,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:15:40,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:15:40,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:15:40,819 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 18:15:40,820 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:15:40,820 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078027252] [2021-05-02 18:15:40,821 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078027252] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:15:40,821 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:15:40,821 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 18:15:40,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642476680] [2021-05-02 18:15:40,825 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 18:15:40,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:15:40,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 18:15:40,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 18:15:40,837 INFO L87 Difference]: Start difference. First operand has 149 states, 143 states have (on average 1.965034965034965) internal successors, (281), 144 states have internal predecessors, (281), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:15:41,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:15:41,691 INFO L93 Difference]: Finished difference Result 285 states and 486 transitions. [2021-05-02 18:15:41,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 18:15:41,693 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 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 18:15:41,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:15:41,702 INFO L225 Difference]: With dead ends: 285 [2021-05-02 18:15:41,702 INFO L226 Difference]: Without dead ends: 279 [2021-05-02 18:15:41,703 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 18:15:41,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-05-02 18:15:41,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 146. [2021-05-02 18:15:41,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 142 states have (on average 1.4859154929577465) internal successors, (211), 142 states have internal predecessors, (211), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:15:41,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 214 transitions. [2021-05-02 18:15:41,739 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 214 transitions. Word has length 143 [2021-05-02 18:15:41,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:15:41,740 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 214 transitions. [2021-05-02 18:15:41,740 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:15:41,740 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 214 transitions. [2021-05-02 18:15:41,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-02 18:15:41,744 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:15:41,744 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:15:41,744 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 18:15:41,744 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:15:41,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:15:41,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1525703351, now seen corresponding path program 1 times [2021-05-02 18:15:41,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:15:41,745 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589475013] [2021-05-02 18:15:41,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:15:41,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:15:41,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:15:41,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:15:41,869 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 18:15:41,869 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:15:41,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589475013] [2021-05-02 18:15:41,870 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589475013] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:15:41,870 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:15:41,870 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-02 18:15:41,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813239321] [2021-05-02 18:15:41,871 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 18:15:41,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:15:41,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 18:15:41,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-02 18:15:41,873 INFO L87 Difference]: Start difference. First operand 146 states and 214 transitions. Second operand has 5 states, 5 states have (on average 28.0) internal successors, (140), 4 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:15:42,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:15:42,866 INFO L93 Difference]: Finished difference Result 411 states and 612 transitions. [2021-05-02 18:15:42,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 18:15:42,867 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 4 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 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 18:15:42,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:15:42,874 INFO L225 Difference]: With dead ends: 411 [2021-05-02 18:15:42,874 INFO L226 Difference]: Without dead ends: 411 [2021-05-02 18:15:42,875 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 66.1ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-05-02 18:15:42,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2021-05-02 18:15:42,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 150. [2021-05-02 18:15:42,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 146 states have (on average 1.4863013698630136) internal successors, (217), 146 states have internal predecessors, (217), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:15:42,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 220 transitions. [2021-05-02 18:15:42,892 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 220 transitions. Word has length 143 [2021-05-02 18:15:42,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:15:42,893 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 220 transitions. [2021-05-02 18:15:42,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 4 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:15:42,893 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 220 transitions. [2021-05-02 18:15:42,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-02 18:15:42,900 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:15:42,900 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:15:42,900 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 18:15:42,900 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:15:42,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:15:42,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1554332502, now seen corresponding path program 1 times [2021-05-02 18:15:42,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:15:42,901 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953768619] [2021-05-02 18:15:42,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:15:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:15:43,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:15:43,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:15:43,058 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 18:15:43,058 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:15:43,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953768619] [2021-05-02 18:15:43,058 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953768619] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:15:43,058 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:15:43,059 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-02 18:15:43,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862972017] [2021-05-02 18:15:43,060 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 18:15:43,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:15:43,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 18:15:43,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 18:15:43,061 INFO L87 Difference]: Start difference. First operand 150 states and 220 transitions. Second operand has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 5 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:15:44,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:15:44,103 INFO L93 Difference]: Finished difference Result 541 states and 807 transitions. [2021-05-02 18:15:44,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 18:15:44,104 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 5 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 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 18:15:44,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:15:44,107 INFO L225 Difference]: With dead ends: 541 [2021-05-02 18:15:44,107 INFO L226 Difference]: Without dead ends: 541 [2021-05-02 18:15:44,107 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 90.6ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-02 18:15:44,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2021-05-02 18:15:44,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 156. [2021-05-02 18:15:44,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 152 states have (on average 1.486842105263158) internal successors, (226), 152 states have internal predecessors, (226), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:15:44,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 229 transitions. [2021-05-02 18:15:44,113 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 229 transitions. Word has length 143 [2021-05-02 18:15:44,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:15:44,113 INFO L480 AbstractCegarLoop]: Abstraction has 156 states and 229 transitions. [2021-05-02 18:15:44,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 5 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:15:44,114 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 229 transitions. [2021-05-02 18:15:44,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-02 18:15:44,115 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:15:44,115 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:15:44,115 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-02 18:15:44,115 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:15:44,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:15:44,116 INFO L82 PathProgramCache]: Analyzing trace with hash -997824459, now seen corresponding path program 1 times [2021-05-02 18:15:44,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:15:44,116 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016065815] [2021-05-02 18:15:44,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:15:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:15:44,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:15:44,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:15:44,188 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 18:15:44,188 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:15:44,188 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016065815] [2021-05-02 18:15:44,188 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016065815] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:15:44,188 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:15:44,188 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-02 18:15:44,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151346124] [2021-05-02 18:15:44,189 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 18:15:44,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:15:44,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 18:15:44,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-02 18:15:44,190 INFO L87 Difference]: Start difference. First operand 156 states and 229 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 6 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:15:45,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:15:45,546 INFO L93 Difference]: Finished difference Result 669 states and 999 transitions. [2021-05-02 18:15:45,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 18:15:45,546 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 6 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 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 18:15:45,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:15:45,549 INFO L225 Difference]: With dead ends: 669 [2021-05-02 18:15:45,549 INFO L226 Difference]: Without dead ends: 669 [2021-05-02 18:15:45,549 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 108.6ms TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2021-05-02 18:15:45,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2021-05-02 18:15:45,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 164. [2021-05-02 18:15:45,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 160 states have (on average 1.4875) internal successors, (238), 160 states have internal predecessors, (238), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:15:45,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 241 transitions. [2021-05-02 18:15:45,556 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 241 transitions. Word has length 143 [2021-05-02 18:15:45,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:15:45,556 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 241 transitions. [2021-05-02 18:15:45,556 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 6 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:15:45,556 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 241 transitions. [2021-05-02 18:15:45,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-02 18:15:45,557 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:15:45,557 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:15:45,557 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-02 18:15:45,557 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:15:45,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:15:45,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1194337964, now seen corresponding path program 1 times [2021-05-02 18:15:45,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:15:45,558 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031158969] [2021-05-02 18:15:45,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:15:45,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:15:45,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:15:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:15:45,635 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 18:15:45,635 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:15:45,635 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031158969] [2021-05-02 18:15:45,635 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031158969] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:15:45,635 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:15:45,635 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-02 18:15:45,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535495797] [2021-05-02 18:15:45,636 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 18:15:45,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:15:45,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 18:15:45,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-02 18:15:45,637 INFO L87 Difference]: Start difference. First operand 164 states and 241 transitions. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 7 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:15:47,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:15:47,270 INFO L93 Difference]: Finished difference Result 795 states and 1188 transitions. [2021-05-02 18:15:47,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 18:15:47,270 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 7 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 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 18:15:47,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:15:47,273 INFO L225 Difference]: With dead ends: 795 [2021-05-02 18:15:47,273 INFO L226 Difference]: Without dead ends: 795 [2021-05-02 18:15:47,273 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 143.2ms TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-05-02 18:15:47,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2021-05-02 18:15:47,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 174. [2021-05-02 18:15:47,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 170 states have (on average 1.488235294117647) internal successors, (253), 170 states have internal predecessors, (253), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:15:47,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 256 transitions. [2021-05-02 18:15:47,279 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 256 transitions. Word has length 143 [2021-05-02 18:15:47,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:15:47,280 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 256 transitions. [2021-05-02 18:15:47,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 7 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:15:47,280 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 256 transitions. [2021-05-02 18:15:47,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-02 18:15:47,281 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:15:47,281 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:15:47,281 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-02 18:15:47,281 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:15:47,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:15:47,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1065255245, now seen corresponding path program 1 times [2021-05-02 18:15:47,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:15:47,282 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687211118] [2021-05-02 18:15:47,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:15:47,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:15:47,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:15:47,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:15:47,361 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 18:15:47,361 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:15:47,361 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687211118] [2021-05-02 18:15:47,362 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687211118] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:15:47,362 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:15:47,362 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-02 18:15:47,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714629242] [2021-05-02 18:15:47,362 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 18:15:47,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:15:47,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 18:15:47,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-02 18:15:47,363 INFO L87 Difference]: Start difference. First operand 174 states and 256 transitions. Second operand has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 8 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:15:49,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:15:49,480 INFO L93 Difference]: Finished difference Result 919 states and 1374 transitions. [2021-05-02 18:15:49,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 18:15:49,480 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 8 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 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 18:15:49,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:15:49,483 INFO L225 Difference]: With dead ends: 919 [2021-05-02 18:15:49,483 INFO L226 Difference]: Without dead ends: 919 [2021-05-02 18:15:49,487 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 168.4ms TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2021-05-02 18:15:49,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2021-05-02 18:15:49,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 186. [2021-05-02 18:15:49,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 182 states have (on average 1.489010989010989) internal successors, (271), 182 states have internal predecessors, (271), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:15:49,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 274 transitions. [2021-05-02 18:15:49,494 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 274 transitions. Word has length 143 [2021-05-02 18:15:49,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:15:49,494 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 274 transitions. [2021-05-02 18:15:49,494 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 8 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:15:49,494 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 274 transitions. [2021-05-02 18:15:49,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-02 18:15:49,495 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:15:49,495 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:15:49,495 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-02 18:15:49,495 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:15:49,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:15:49,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1570813870, now seen corresponding path program 1 times [2021-05-02 18:15:49,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:15:49,496 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160784752] [2021-05-02 18:15:49,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:15:49,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:15:49,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:15:49,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:15:49,596 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 18:15:49,596 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:15:49,596 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160784752] [2021-05-02 18:15:49,597 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160784752] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:15:49,597 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:15:49,597 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-02 18:15:49,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392065652] [2021-05-02 18:15:49,597 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 18:15:49,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:15:49,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 18:15:49,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-02 18:15:49,598 INFO L87 Difference]: Start difference. First operand 186 states and 274 transitions. Second operand has 10 states, 10 states have (on average 14.0) internal successors, (140), 9 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:15:51,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:15:51,959 INFO L93 Difference]: Finished difference Result 1041 states and 1557 transitions. [2021-05-02 18:15:51,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 18:15:51,960 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.0) internal successors, (140), 9 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 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 18:15:51,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:15:51,963 INFO L225 Difference]: With dead ends: 1041 [2021-05-02 18:15:51,963 INFO L226 Difference]: Without dead ends: 1041 [2021-05-02 18:15:51,964 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 182.9ms TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2021-05-02 18:15:51,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2021-05-02 18:15:51,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 200. [2021-05-02 18:15:51,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 196 states have (on average 1.489795918367347) internal successors, (292), 196 states have internal predecessors, (292), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:15:51,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 295 transitions. [2021-05-02 18:15:51,972 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 295 transitions. Word has length 143 [2021-05-02 18:15:51,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:15:51,974 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 295 transitions. [2021-05-02 18:15:51,975 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 14.0) internal successors, (140), 9 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:15:51,975 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 295 transitions. [2021-05-02 18:15:51,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-02 18:15:51,975 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:15:51,976 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:15:51,976 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-02 18:15:51,976 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:15:51,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:15:51,976 INFO L82 PathProgramCache]: Analyzing trace with hash -2081348047, now seen corresponding path program 1 times [2021-05-02 18:15:51,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:15:51,976 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750634734] [2021-05-02 18:15:51,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:15:51,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:15:52,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:15:52,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:15:52,079 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 18:15:52,079 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:15:52,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750634734] [2021-05-02 18:15:52,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750634734] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:15:52,079 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:15:52,079 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-05-02 18:15:52,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876366518] [2021-05-02 18:15:52,080 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 18:15:52,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:15:52,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 18:15:52,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-02 18:15:52,080 INFO L87 Difference]: Start difference. First operand 200 states and 295 transitions. Second operand has 11 states, 11 states have (on average 12.727272727272727) internal successors, (140), 10 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:15:54,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:15:54,499 INFO L93 Difference]: Finished difference Result 1161 states and 1737 transitions. [2021-05-02 18:15:54,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 18:15:54,500 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.727272727272727) internal successors, (140), 10 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 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 18:15:54,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:15:54,503 INFO L225 Difference]: With dead ends: 1161 [2021-05-02 18:15:54,503 INFO L226 Difference]: Without dead ends: 1161 [2021-05-02 18:15:54,505 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 218.5ms TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2021-05-02 18:15:54,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2021-05-02 18:15:54,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 216. [2021-05-02 18:15:54,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 212 states have (on average 1.490566037735849) internal successors, (316), 212 states have internal predecessors, (316), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:15:54,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 319 transitions. [2021-05-02 18:15:54,511 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 319 transitions. Word has length 143 [2021-05-02 18:15:54,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:15:54,512 INFO L480 AbstractCegarLoop]: Abstraction has 216 states and 319 transitions. [2021-05-02 18:15:54,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 12.727272727272727) internal successors, (140), 10 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:15:54,512 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 319 transitions. [2021-05-02 18:15:54,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-02 18:15:54,513 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:15:54,513 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:15:54,513 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-02 18:15:54,513 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:15:54,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:15:54,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1216546896, now seen corresponding path program 1 times [2021-05-02 18:15:54,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:15:54,514 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384830586] [2021-05-02 18:15:54,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:15:54,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:15:54,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:15:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:15:54,619 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 18:15:54,619 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:15:54,619 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384830586] [2021-05-02 18:15:54,619 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384830586] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:15:54,619 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:15:54,619 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-05-02 18:15:54,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446991426] [2021-05-02 18:15:54,620 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 18:15:54,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:15:54,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 18:15:54,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-05-02 18:15:54,620 INFO L87 Difference]: Start difference. First operand 216 states and 319 transitions. Second operand has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 11 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:15:57,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:15:57,466 INFO L93 Difference]: Finished difference Result 1279 states and 1914 transitions. [2021-05-02 18:15:57,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 18:15:57,467 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 11 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 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 18:15:57,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:15:57,470 INFO L225 Difference]: With dead ends: 1279 [2021-05-02 18:15:57,470 INFO L226 Difference]: Without dead ends: 1279 [2021-05-02 18:15:57,471 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 262.2ms TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2021-05-02 18:15:57,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2021-05-02 18:15:57,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 234. [2021-05-02 18:15:57,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 230 states have (on average 1.491304347826087) internal successors, (343), 230 states have internal predecessors, (343), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:15:57,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 346 transitions. [2021-05-02 18:15:57,478 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 346 transitions. Word has length 143 [2021-05-02 18:15:57,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:15:57,478 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 346 transitions. [2021-05-02 18:15:57,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 11 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:15:57,479 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 346 transitions. [2021-05-02 18:15:57,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-02 18:15:57,479 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:15:57,479 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:15:57,480 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-05-02 18:15:57,480 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:15:57,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:15:57,480 INFO L82 PathProgramCache]: Analyzing trace with hash 807722671, now seen corresponding path program 1 times [2021-05-02 18:15:57,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:15:57,480 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595798601] [2021-05-02 18:15:57,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:15:57,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:15:57,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:15:57,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:15:57,582 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 18:15:57,582 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:15:57,582 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595798601] [2021-05-02 18:15:57,582 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595798601] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:15:57,582 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:15:57,582 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-05-02 18:15:57,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724355462] [2021-05-02 18:15:57,583 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 18:15:57,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:15:57,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 18:15:57,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-05-02 18:15:57,585 INFO L87 Difference]: Start difference. First operand 234 states and 346 transitions. Second operand has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 12 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:16:00,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:16:00,750 INFO L93 Difference]: Finished difference Result 1395 states and 2088 transitions. [2021-05-02 18:16:00,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 18:16:00,751 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 12 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 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 18:16:00,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:16:00,754 INFO L225 Difference]: With dead ends: 1395 [2021-05-02 18:16:00,754 INFO L226 Difference]: Without dead ends: 1395 [2021-05-02 18:16:00,755 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 275.7ms TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2021-05-02 18:16:00,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2021-05-02 18:16:00,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 254. [2021-05-02 18:16:00,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 250 states have (on average 1.492) internal successors, (373), 250 states have internal predecessors, (373), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:16:00,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 376 transitions. [2021-05-02 18:16:00,761 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 376 transitions. Word has length 143 [2021-05-02 18:16:00,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:16:00,762 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 376 transitions. [2021-05-02 18:16:00,762 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 10.76923076923077) internal successors, (140), 12 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:16:00,762 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 376 transitions. [2021-05-02 18:16:00,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-02 18:16:00,763 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:16:00,763 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:16:00,763 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-05-02 18:16:00,763 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:16:00,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:16:00,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1230333618, now seen corresponding path program 1 times [2021-05-02 18:16:00,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:16:00,763 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517497018] [2021-05-02 18:16:00,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:16:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:16:00,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:16:00,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:16:00,867 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 18:16:00,867 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:16:00,868 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517497018] [2021-05-02 18:16:00,868 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517497018] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:16:00,868 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:16:00,868 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-02 18:16:00,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843561201] [2021-05-02 18:16:00,868 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 18:16:00,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:16:00,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 18:16:00,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-05-02 18:16:00,869 INFO L87 Difference]: Start difference. First operand 254 states and 376 transitions. Second operand has 14 states, 14 states have (on average 10.0) internal successors, (140), 13 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:16:04,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:16:04,351 INFO L93 Difference]: Finished difference Result 1509 states and 2259 transitions. [2021-05-02 18:16:04,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-02 18:16:04,352 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.0) internal successors, (140), 13 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 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 18:16:04,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:16:04,356 INFO L225 Difference]: With dead ends: 1509 [2021-05-02 18:16:04,356 INFO L226 Difference]: Without dead ends: 1509 [2021-05-02 18:16:04,356 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 308.8ms TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2021-05-02 18:16:04,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2021-05-02 18:16:04,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 276. [2021-05-02 18:16:04,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 272 states have (on average 1.4926470588235294) internal successors, (406), 272 states have internal predecessors, (406), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:16:04,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 409 transitions. [2021-05-02 18:16:04,363 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 409 transitions. Word has length 143 [2021-05-02 18:16:04,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:16:04,364 INFO L480 AbstractCegarLoop]: Abstraction has 276 states and 409 transitions. [2021-05-02 18:16:04,364 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 10.0) internal successors, (140), 13 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:16:04,364 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 409 transitions. [2021-05-02 18:16:04,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-02 18:16:04,365 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:16:04,365 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:16:04,365 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-05-02 18:16:04,365 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:16:04,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:16:04,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1297340371, now seen corresponding path program 1 times [2021-05-02 18:16:04,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:16:04,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547230612] [2021-05-02 18:16:04,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:16:04,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:16:04,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:16:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:16:04,480 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 18:16:04,480 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:16:04,480 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547230612] [2021-05-02 18:16:04,481 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547230612] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:16:04,481 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:16:04,481 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-02 18:16:04,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629463018] [2021-05-02 18:16:04,481 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-02 18:16:04,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:16:04,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-02 18:16:04,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-05-02 18:16:04,482 INFO L87 Difference]: Start difference. First operand 276 states and 409 transitions. Second operand has 15 states, 15 states have (on average 9.333333333333334) internal successors, (140), 14 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:16:08,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:16:08,003 INFO L93 Difference]: Finished difference Result 1621 states and 2427 transitions. [2021-05-02 18:16:08,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 18:16:08,003 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.333333333333334) internal successors, (140), 14 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 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 18:16:08,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:16:08,007 INFO L225 Difference]: With dead ends: 1621 [2021-05-02 18:16:08,007 INFO L226 Difference]: Without dead ends: 1621 [2021-05-02 18:16:08,007 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 358.9ms TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2021-05-02 18:16:08,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1621 states. [2021-05-02 18:16:08,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1621 to 300. [2021-05-02 18:16:08,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 296 states have (on average 1.4932432432432432) internal successors, (442), 296 states have internal predecessors, (442), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:16:08,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 445 transitions. [2021-05-02 18:16:08,014 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 445 transitions. Word has length 143 [2021-05-02 18:16:08,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:16:08,015 INFO L480 AbstractCegarLoop]: Abstraction has 300 states and 445 transitions. [2021-05-02 18:16:08,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 9.333333333333334) internal successors, (140), 14 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:16:08,015 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 445 transitions. [2021-05-02 18:16:08,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-02 18:16:08,016 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:16:08,016 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:16:08,016 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-05-02 18:16:08,016 INFO L428 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:16:08,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:16:08,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1266320564, now seen corresponding path program 1 times [2021-05-02 18:16:08,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:16:08,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311775303] [2021-05-02 18:16:08,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:16:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:16:08,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:16:08,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:16:08,138 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 18:16:08,139 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:16:08,139 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311775303] [2021-05-02 18:16:08,139 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311775303] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:16:08,139 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:16:08,139 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-02 18:16:08,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719275253] [2021-05-02 18:16:08,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-02 18:16:08,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:16:08,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-02 18:16:08,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-05-02 18:16:08,140 INFO L87 Difference]: Start difference. First operand 300 states and 445 transitions. Second operand has 16 states, 16 states have (on average 8.75) internal successors, (140), 15 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:16:11,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:16:11,943 INFO L93 Difference]: Finished difference Result 1731 states and 2592 transitions. [2021-05-02 18:16:11,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-02 18:16:11,943 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.75) internal successors, (140), 15 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 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 18:16:11,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:16:11,948 INFO L225 Difference]: With dead ends: 1731 [2021-05-02 18:16:11,948 INFO L226 Difference]: Without dead ends: 1731 [2021-05-02 18:16:11,948 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 400.0ms TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2021-05-02 18:16:11,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2021-05-02 18:16:11,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 326. [2021-05-02 18:16:11,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 322 states have (on average 1.4937888198757765) internal successors, (481), 322 states have internal predecessors, (481), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:16:11,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 484 transitions. [2021-05-02 18:16:11,956 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 484 transitions. Word has length 143 [2021-05-02 18:16:11,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:16:11,956 INFO L480 AbstractCegarLoop]: Abstraction has 326 states and 484 transitions. [2021-05-02 18:16:11,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 8.75) internal successors, (140), 15 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:16:11,956 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 484 transitions. [2021-05-02 18:16:11,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-02 18:16:11,957 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:16:11,957 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:16:11,957 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-05-02 18:16:11,957 INFO L428 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:16:11,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:16:11,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1521057109, now seen corresponding path program 1 times [2021-05-02 18:16:11,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:16:11,958 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411744472] [2021-05-02 18:16:11,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:16:11,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:16:12,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:16:12,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:16:12,089 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 18:16:12,089 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:16:12,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411744472] [2021-05-02 18:16:12,089 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411744472] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:16:12,089 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:16:12,090 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-05-02 18:16:12,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587214219] [2021-05-02 18:16:12,090 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-02 18:16:12,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:16:12,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-02 18:16:12,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2021-05-02 18:16:12,091 INFO L87 Difference]: Start difference. First operand 326 states and 484 transitions. Second operand has 17 states, 17 states have (on average 8.235294117647058) internal successors, (140), 16 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:16:16,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:16:16,049 INFO L93 Difference]: Finished difference Result 1839 states and 2754 transitions. [2021-05-02 18:16:16,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-02 18:16:16,049 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 8.235294117647058) internal successors, (140), 16 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 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 18:16:16,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:16:16,054 INFO L225 Difference]: With dead ends: 1839 [2021-05-02 18:16:16,054 INFO L226 Difference]: Without dead ends: 1839 [2021-05-02 18:16:16,055 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 449.5ms TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2021-05-02 18:16:16,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2021-05-02 18:16:16,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 354. [2021-05-02 18:16:16,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 350 states have (on average 1.4942857142857142) internal successors, (523), 350 states have internal predecessors, (523), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:16:16,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 526 transitions. [2021-05-02 18:16:16,088 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 526 transitions. Word has length 143 [2021-05-02 18:16:16,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:16:16,088 INFO L480 AbstractCegarLoop]: Abstraction has 354 states and 526 transitions. [2021-05-02 18:16:16,088 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 8.235294117647058) internal successors, (140), 16 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:16:16,088 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 526 transitions. [2021-05-02 18:16:16,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-02 18:16:16,089 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:16:16,089 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:16:16,090 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-05-02 18:16:16,090 INFO L428 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:16:16,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:16:16,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1509740982, now seen corresponding path program 1 times [2021-05-02 18:16:16,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:16:16,090 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970545536] [2021-05-02 18:16:16,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:16:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:16:16,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:16:16,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:16:16,315 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 18:16:16,315 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:16:16,315 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970545536] [2021-05-02 18:16:16,315 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970545536] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:16:16,315 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:16:16,315 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-05-02 18:16:16,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860541412] [2021-05-02 18:16:16,315 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-02 18:16:16,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:16:16,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-02 18:16:16,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-05-02 18:16:16,316 INFO L87 Difference]: Start difference. First operand 354 states and 526 transitions. Second operand has 18 states, 18 states have (on average 7.777777777777778) internal successors, (140), 17 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:16:20,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:16:20,896 INFO L93 Difference]: Finished difference Result 1945 states and 2913 transitions. [2021-05-02 18:16:20,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-02 18:16:20,896 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.777777777777778) internal successors, (140), 17 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 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 18:16:20,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:16:20,906 INFO L225 Difference]: With dead ends: 1945 [2021-05-02 18:16:20,906 INFO L226 Difference]: Without dead ends: 1945 [2021-05-02 18:16:20,907 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 498.8ms TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2021-05-02 18:16:20,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1945 states. [2021-05-02 18:16:20,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1945 to 384. [2021-05-02 18:16:20,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 380 states have (on average 1.4947368421052631) internal successors, (568), 380 states have internal predecessors, (568), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:16:20,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 571 transitions. [2021-05-02 18:16:20,914 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 571 transitions. Word has length 143 [2021-05-02 18:16:20,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:16:20,914 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 571 transitions. [2021-05-02 18:16:20,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 7.777777777777778) internal successors, (140), 17 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:16:20,914 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 571 transitions. [2021-05-02 18:16:20,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-02 18:16:20,915 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:16:20,916 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:16:20,916 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-05-02 18:16:20,916 INFO L428 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:16:20,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:16:20,916 INFO L82 PathProgramCache]: Analyzing trace with hash 775122473, now seen corresponding path program 1 times [2021-05-02 18:16:20,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:16:20,916 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710406560] [2021-05-02 18:16:20,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:16:20,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:16:21,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:16:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:16:21,081 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 18:16:21,081 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:16:21,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710406560] [2021-05-02 18:16:21,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710406560] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:16:21,082 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:16:21,082 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-05-02 18:16:21,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495565382] [2021-05-02 18:16:21,083 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-02 18:16:21,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:16:21,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-02 18:16:21,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2021-05-02 18:16:21,084 INFO L87 Difference]: Start difference. First operand 384 states and 571 transitions. Second operand has 19 states, 19 states have (on average 7.368421052631579) internal successors, (140), 18 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:16:25,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:16:25,790 INFO L93 Difference]: Finished difference Result 2049 states and 3069 transitions. [2021-05-02 18:16:25,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-02 18:16:25,790 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.368421052631579) internal successors, (140), 18 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 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 18:16:25,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:16:25,795 INFO L225 Difference]: With dead ends: 2049 [2021-05-02 18:16:25,795 INFO L226 Difference]: Without dead ends: 2049 [2021-05-02 18:16:25,795 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 556.6ms TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2021-05-02 18:16:25,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2049 states. [2021-05-02 18:16:25,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2049 to 416. [2021-05-02 18:16:25,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 412 states have (on average 1.4951456310679612) internal successors, (616), 412 states have internal predecessors, (616), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:16:25,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 619 transitions. [2021-05-02 18:16:25,803 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 619 transitions. Word has length 143 [2021-05-02 18:16:25,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:16:25,804 INFO L480 AbstractCegarLoop]: Abstraction has 416 states and 619 transitions. [2021-05-02 18:16:25,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 7.368421052631579) internal successors, (140), 18 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:16:25,804 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 619 transitions. [2021-05-02 18:16:25,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-02 18:16:25,805 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:16:25,805 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:16:25,805 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-05-02 18:16:25,805 INFO L428 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:16:25,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:16:25,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1800614472, now seen corresponding path program 1 times [2021-05-02 18:16:25,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:16:25,806 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266862961] [2021-05-02 18:16:25,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:16:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:16:26,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:16:26,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:16:26,989 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 18:16:26,990 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:16:26,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266862961] [2021-05-02 18:16:26,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266862961] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:16:26,990 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:16:26,990 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2021-05-02 18:16:26,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041303826] [2021-05-02 18:16:26,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-05-02 18:16:26,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:16:26,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-05-02 18:16:26,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1330, Invalid=1532, Unknown=0, NotChecked=0, Total=2862 [2021-05-02 18:16:26,994 INFO L87 Difference]: Start difference. First operand 416 states and 619 transitions. Second operand has 54 states, 54 states have (on average 2.5925925925925926) internal successors, (140), 53 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:16:30,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:16:30,476 INFO L93 Difference]: Finished difference Result 241 states and 290 transitions. [2021-05-02 18:16:30,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-02 18:16:30,476 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.5925925925925926) internal successors, (140), 53 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 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 18:16:30,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:16:30,477 INFO L225 Difference]: With dead ends: 241 [2021-05-02 18:16:30,477 INFO L226 Difference]: Without dead ends: 241 [2021-05-02 18:16:30,479 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1371 ImplicationChecksByTransitivity, 2912.4ms TimeCoverageRelationStatistics Valid=3984, Invalid=6936, Unknown=0, NotChecked=0, Total=10920 [2021-05-02 18:16:30,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-05-02 18:16:30,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2021-05-02 18:16:30,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 237 states have (on average 1.2109704641350212) internal successors, (287), 237 states have internal predecessors, (287), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:16:30,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 290 transitions. [2021-05-02 18:16:30,482 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 290 transitions. Word has length 143 [2021-05-02 18:16:30,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:16:30,483 INFO L480 AbstractCegarLoop]: Abstraction has 241 states and 290 transitions. [2021-05-02 18:16:30,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 54 states, 54 states have (on average 2.5925925925925926) internal successors, (140), 53 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:16:30,483 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 290 transitions. [2021-05-02 18:16:30,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-02 18:16:30,484 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:16:30,484 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:16:30,484 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-05-02 18:16:30,484 INFO L428 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:16:30,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:16:30,485 INFO L82 PathProgramCache]: Analyzing trace with hash -544052569, now seen corresponding path program 1 times [2021-05-02 18:16:30,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:16:30,485 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279572870] [2021-05-02 18:16:30,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:16:30,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:16:32,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:16:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:16:32,458 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 18:16:32,458 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:16:32,458 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279572870] [2021-05-02 18:16:32,458 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279572870] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:16:32,458 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:16:32,458 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2021-05-02 18:16:32,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200034424] [2021-05-02 18:16:32,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-05-02 18:16:32,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:16:32,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-05-02 18:16:32,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2021-05-02 18:16:32,460 INFO L87 Difference]: Start difference. First operand 241 states and 290 transitions. Second operand has 71 states, 71 states have (on average 1.971830985915493) internal successors, (140), 70 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:16:37,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:16:37,884 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2021-05-02 18:16:37,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-02 18:16:37,884 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.971830985915493) internal successors, (140), 70 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 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 18:16:37,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:16:37,885 INFO L225 Difference]: With dead ends: 147 [2021-05-02 18:16:37,885 INFO L226 Difference]: Without dead ends: 147 [2021-05-02 18:16:37,888 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2345 ImplicationChecksByTransitivity, 5788.2ms TimeCoverageRelationStatistics Valid=7245, Invalid=11937, Unknown=0, NotChecked=0, Total=19182 [2021-05-02 18:16:37,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-05-02 18:16:37,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 146. [2021-05-02 18:16:37,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 142 states have (on average 1.0070422535211268) internal successors, (143), 142 states have internal predecessors, (143), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:16:37,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2021-05-02 18:16:37,890 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 143 [2021-05-02 18:16:37,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:16:37,891 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2021-05-02 18:16:37,891 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 71 states, 71 states have (on average 1.971830985915493) internal successors, (140), 70 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:16:37,891 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2021-05-02 18:16:37,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-05-02 18:16:37,891 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:16:37,892 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:16:37,892 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-05-02 18:16:37,892 INFO L428 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:16:37,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:16:37,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1150564772, now seen corresponding path program 1 times [2021-05-02 18:16:37,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:16:37,892 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915374905] [2021-05-02 18:16:37,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:16:37,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:16:39,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:16:39,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:16:39,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:16:39,880 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:16:39,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915374905] [2021-05-02 18:16:39,880 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915374905] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:16:39,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377692313] [2021-05-02 18:16:39,880 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 18:16:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:16:39,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 70 conjunts are in the unsatisfiable core [2021-05-02 18:16:39,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:16:40,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:40,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:16:40,402 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377692313] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:16:40,402 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:16:40,403 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71] total 73 [2021-05-02 18:16:40,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711878231] [2021-05-02 18:16:40,403 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2021-05-02 18:16:40,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:16:40,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-05-02 18:16:40,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2021-05-02 18:16:40,405 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand has 73 states, 73 states have (on average 2.0) internal successors, (146), 72 states have internal predecessors, (146), 1 states have call successors, (3), 2 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 18:16:45,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:16:45,610 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2021-05-02 18:16:45,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-05-02 18:16:45,610 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.0) internal successors, (146), 72 states have internal predecessors, (146), 1 states have call successors, (3), 2 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 145 [2021-05-02 18:16:45,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:16:45,611 INFO L225 Difference]: With dead ends: 149 [2021-05-02 18:16:45,611 INFO L226 Difference]: Without dead ends: 149 [2021-05-02 18:16:45,613 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2615 ImplicationChecksByTransitivity, 5909.2ms TimeCoverageRelationStatistics Valid=7527, Invalid=12495, Unknown=0, NotChecked=0, Total=20022 [2021-05-02 18:16:45,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-05-02 18:16:45,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 148. [2021-05-02 18:16:45,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 144 states have (on average 1.0069444444444444) internal successors, (145), 144 states have internal predecessors, (145), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:16:45,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions. [2021-05-02 18:16:45,616 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 145 [2021-05-02 18:16:45,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:16:45,616 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions. [2021-05-02 18:16:45,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 73 states, 73 states have (on average 2.0) internal successors, (146), 72 states have internal predecessors, (146), 1 states have call successors, (3), 2 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 18:16:45,616 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions. [2021-05-02 18:16:45,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-05-02 18:16:45,617 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:16:45,617 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:16:45,835 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:16:45,835 INFO L428 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:16:45,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:16:45,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1885224289, now seen corresponding path program 2 times [2021-05-02 18:16:45,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:16:45,835 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528814685] [2021-05-02 18:16:45,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:16:45,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:16:47,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:16:47,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:16:47,908 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:16:47,908 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:16:47,908 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528814685] [2021-05-02 18:16:47,908 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528814685] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:16:47,908 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829202652] [2021-05-02 18:16:47,909 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 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 18:16:47,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:16:47,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:16:47,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 71 conjunts are in the unsatisfiable core [2021-05-02 18:16:48,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:16:48,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:48,481 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:16:48,482 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829202652] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:16:48,482 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:16:48,482 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 72] total 74 [2021-05-02 18:16:48,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783173850] [2021-05-02 18:16:48,482 INFO L460 AbstractCegarLoop]: Interpolant automaton has 74 states [2021-05-02 18:16:48,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:16:48,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-05-02 18:16:48,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2630, Invalid=2772, Unknown=0, NotChecked=0, Total=5402 [2021-05-02 18:16:48,484 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand has 74 states, 74 states have (on average 2.0) internal successors, (148), 73 states have internal predecessors, (148), 1 states have call successors, (3), 2 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 18:16:53,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:16:53,590 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2021-05-02 18:16:53,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-05-02 18:16:53,590 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.0) internal successors, (148), 73 states have internal predecessors, (148), 1 states have call successors, (3), 2 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 147 [2021-05-02 18:16:53,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:16:53,591 INFO L225 Difference]: With dead ends: 151 [2021-05-02 18:16:53,591 INFO L226 Difference]: Without dead ends: 151 [2021-05-02 18:16:53,592 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2688 ImplicationChecksByTransitivity, 5375.7ms TimeCoverageRelationStatistics Valid=7741, Invalid=12851, Unknown=0, NotChecked=0, Total=20592 [2021-05-02 18:16:53,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-05-02 18:16:53,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 150. [2021-05-02 18:16:53,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 146 states have (on average 1.0068493150684932) internal successors, (147), 146 states have internal predecessors, (147), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:16:53,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 150 transitions. [2021-05-02 18:16:53,594 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 150 transitions. Word has length 147 [2021-05-02 18:16:53,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:16:53,595 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 150 transitions. [2021-05-02 18:16:53,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 74 states, 74 states have (on average 2.0) internal successors, (148), 73 states have internal predecessors, (148), 1 states have call successors, (3), 2 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 18:16:53,595 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 150 transitions. [2021-05-02 18:16:53,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-05-02 18:16:53,595 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:16:53,595 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:16:53,812 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:16:53,813 INFO L428 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:16:53,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:16:53,813 INFO L82 PathProgramCache]: Analyzing trace with hash -776583714, now seen corresponding path program 3 times [2021-05-02 18:16:53,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:16:53,814 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762553349] [2021-05-02 18:16:53,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:16:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:16:55,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:16:55,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:16:55,221 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:16:55,223 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:16:55,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762553349] [2021-05-02 18:16:55,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762553349] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:16:55,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644803469] [2021-05-02 18:16:55,223 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 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 18:16:55,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-02 18:16:55,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:16:55,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 72 conjunts are in the unsatisfiable core [2021-05-02 18:16:55,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:16:55,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:55,625 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:16:55,625 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644803469] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:16:55,625 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:16:55,625 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 73] total 75 [2021-05-02 18:16:55,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163968746] [2021-05-02 18:16:55,626 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-05-02 18:16:55,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:16:55,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-05-02 18:16:55,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2021-05-02 18:16:55,628 INFO L87 Difference]: Start difference. First operand 150 states and 150 transitions. Second operand has 75 states, 75 states have (on average 2.0) internal successors, (150), 74 states have internal predecessors, (150), 1 states have call successors, (3), 2 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 18:17:00,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:17:00,615 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2021-05-02 18:17:00,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-05-02 18:17:00,615 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.0) internal successors, (150), 74 states have internal predecessors, (150), 1 states have call successors, (3), 2 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 149 [2021-05-02 18:17:00,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:17:00,616 INFO L225 Difference]: With dead ends: 153 [2021-05-02 18:17:00,616 INFO L226 Difference]: Without dead ends: 153 [2021-05-02 18:17:00,617 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2762 ImplicationChecksByTransitivity, 5167.1ms TimeCoverageRelationStatistics Valid=7958, Invalid=13212, Unknown=0, NotChecked=0, Total=21170 [2021-05-02 18:17:00,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-05-02 18:17:00,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2021-05-02 18:17:00,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 148 states have (on average 1.0067567567567568) internal successors, (149), 148 states have internal predecessors, (149), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:17:00,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 152 transitions. [2021-05-02 18:17:00,619 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 152 transitions. Word has length 149 [2021-05-02 18:17:00,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:17:00,619 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 152 transitions. [2021-05-02 18:17:00,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 75 states, 75 states have (on average 2.0) internal successors, (150), 74 states have internal predecessors, (150), 1 states have call successors, (3), 2 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 18:17:00,619 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 152 transitions. [2021-05-02 18:17:00,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-05-02 18:17:00,620 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:17:00,620 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:17:00,820 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:17:00,821 INFO L428 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:17:00,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:17:00,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1026433819, now seen corresponding path program 4 times [2021-05-02 18:17:00,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:17:00,821 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628154171] [2021-05-02 18:17:00,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:17:00,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:17:03,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:17:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:17:03,008 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:17:03,008 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:17:03,008 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628154171] [2021-05-02 18:17:03,008 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628154171] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:17:03,008 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981301617] [2021-05-02 18:17:03,008 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 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 18:17:03,075 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:17:03,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:17:03,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 73 conjunts are in the unsatisfiable core [2021-05-02 18:17:03,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:17:03,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:03,385 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:17:03,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981301617] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:17:03,385 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:17:03,385 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 74] total 76 [2021-05-02 18:17:03,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248222471] [2021-05-02 18:17:03,387 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-05-02 18:17:03,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:17:03,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-05-02 18:17:03,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 18:17:03,388 INFO L87 Difference]: Start difference. First operand 152 states and 152 transitions. Second operand has 76 states, 76 states have (on average 2.0) internal successors, (152), 75 states have internal predecessors, (152), 1 states have call successors, (3), 2 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 18:17:09,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:17:09,552 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2021-05-02 18:17:09,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-02 18:17:09,555 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.0) internal successors, (152), 75 states have internal predecessors, (152), 1 states have call successors, (3), 2 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 151 [2021-05-02 18:17:09,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:17:09,555 INFO L225 Difference]: With dead ends: 155 [2021-05-02 18:17:09,556 INFO L226 Difference]: Without dead ends: 155 [2021-05-02 18:17:09,557 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2837 ImplicationChecksByTransitivity, 6315.9ms TimeCoverageRelationStatistics Valid=8178, Invalid=13578, Unknown=0, NotChecked=0, Total=21756 [2021-05-02 18:17:09,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-05-02 18:17:09,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154. [2021-05-02 18:17:09,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 150 states have (on average 1.0066666666666666) internal successors, (151), 150 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:17:09,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 154 transitions. [2021-05-02 18:17:09,559 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 154 transitions. Word has length 151 [2021-05-02 18:17:09,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:17:09,559 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 154 transitions. [2021-05-02 18:17:09,559 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 76 states, 76 states have (on average 2.0) internal successors, (152), 75 states have internal predecessors, (152), 1 states have call successors, (3), 2 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 18:17:09,559 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 154 transitions. [2021-05-02 18:17:09,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-05-02 18:17:09,560 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:17:09,560 INFO L523 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:17:09,788 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:17:09,788 INFO L428 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:17:09,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:17:09,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1440504552, now seen corresponding path program 5 times [2021-05-02 18:17:09,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:17:09,789 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257023062] [2021-05-02 18:17:09,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:17:09,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:17:11,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:17:11,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:17:11,980 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:17:11,980 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:17:11,980 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257023062] [2021-05-02 18:17:11,980 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257023062] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:17:11,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040916320] [2021-05-02 18:17:11,981 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 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 18:17:12,058 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-05-02 18:17:12,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:17:12,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 74 conjunts are in the unsatisfiable core [2021-05-02 18:17:12,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:17:12,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:12,326 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:17:12,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040916320] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:17:12,326 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:17:12,326 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 75] total 77 [2021-05-02 18:17:12,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132829974] [2021-05-02 18:17:12,327 INFO L460 AbstractCegarLoop]: Interpolant automaton has 77 states [2021-05-02 18:17:12,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:17:12,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-05-02 18:17:12,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2852, Invalid=3000, Unknown=0, NotChecked=0, Total=5852 [2021-05-02 18:17:12,328 INFO L87 Difference]: Start difference. First operand 154 states and 154 transitions. Second operand has 77 states, 77 states have (on average 2.0) internal successors, (154), 76 states have internal predecessors, (154), 1 states have call successors, (3), 2 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 18:17:18,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:17:18,045 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2021-05-02 18:17:18,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-05-02 18:17:18,045 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.0) internal successors, (154), 76 states have internal predecessors, (154), 1 states have call successors, (3), 2 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 153 [2021-05-02 18:17:18,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:17:18,046 INFO L225 Difference]: With dead ends: 157 [2021-05-02 18:17:18,046 INFO L226 Difference]: Without dead ends: 157 [2021-05-02 18:17:18,047 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2913 ImplicationChecksByTransitivity, 6325.6ms TimeCoverageRelationStatistics Valid=8401, Invalid=13949, Unknown=0, NotChecked=0, Total=22350 [2021-05-02 18:17:18,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-05-02 18:17:18,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2021-05-02 18:17:18,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 152 states have (on average 1.006578947368421) internal successors, (153), 152 states have internal predecessors, (153), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:17:18,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2021-05-02 18:17:18,049 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 153 [2021-05-02 18:17:18,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:17:18,049 INFO L480 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2021-05-02 18:17:18,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 77 states, 77 states have (on average 2.0) internal successors, (154), 76 states have internal predecessors, (154), 1 states have call successors, (3), 2 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 18:17:18,049 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2021-05-02 18:17:18,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-05-02 18:17:18,050 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:17:18,050 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:17:18,266 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-05-02 18:17:18,266 INFO L428 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:17:18,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:17:18,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1346331691, now seen corresponding path program 6 times [2021-05-02 18:17:18,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:17:18,267 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473489331] [2021-05-02 18:17:18,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:17:18,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:17:20,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:17:20,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:17:20,430 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:17:20,430 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:17:20,430 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473489331] [2021-05-02 18:17:20,430 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473489331] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:17:20,430 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765749924] [2021-05-02 18:17:20,430 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 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 18:17:20,505 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-05-02 18:17:20,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:17:20,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 75 conjunts are in the unsatisfiable core [2021-05-02 18:17:20,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:17:20,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:20,811 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:17:20,811 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765749924] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:17:20,811 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:17:20,812 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 76] total 78 [2021-05-02 18:17:20,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109550163] [2021-05-02 18:17:20,813 INFO L460 AbstractCegarLoop]: Interpolant automaton has 78 states [2021-05-02 18:17:20,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:17:20,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-05-02 18:17:20,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006 [2021-05-02 18:17:20,815 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand has 78 states, 78 states have (on average 2.0) internal successors, (156), 77 states have internal predecessors, (156), 1 states have call successors, (3), 2 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 18:17:26,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:17:26,126 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2021-05-02 18:17:26,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-05-02 18:17:26,126 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 2.0) internal successors, (156), 77 states have internal predecessors, (156), 1 states have call successors, (3), 2 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 155 [2021-05-02 18:17:26,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:17:26,127 INFO L225 Difference]: With dead ends: 159 [2021-05-02 18:17:26,127 INFO L226 Difference]: Without dead ends: 159 [2021-05-02 18:17:26,128 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2990 ImplicationChecksByTransitivity, 6254.3ms TimeCoverageRelationStatistics Valid=8627, Invalid=14325, Unknown=0, NotChecked=0, Total=22952 [2021-05-02 18:17:26,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-05-02 18:17:26,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 158. [2021-05-02 18:17:26,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 154 states have (on average 1.0064935064935066) internal successors, (155), 154 states have internal predecessors, (155), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:17:26,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2021-05-02 18:17:26,130 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 155 [2021-05-02 18:17:26,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:17:26,130 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2021-05-02 18:17:26,131 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 78 states, 78 states have (on average 2.0) internal successors, (156), 77 states have internal predecessors, (156), 1 states have call successors, (3), 2 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 18:17:26,131 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2021-05-02 18:17:26,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-05-02 18:17:26,131 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:17:26,131 INFO L523 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:17:26,341 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:17:26,341 INFO L428 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:17:26,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:17:26,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1040525486, now seen corresponding path program 7 times [2021-05-02 18:17:26,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:17:26,342 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376494166] [2021-05-02 18:17:26,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:17:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:17:28,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:17:28,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:17:28,760 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:17:28,760 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:17:28,760 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376494166] [2021-05-02 18:17:28,760 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376494166] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:17:28,760 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170840804] [2021-05-02 18:17:28,760 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 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 18:17:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:17:28,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 76 conjunts are in the unsatisfiable core [2021-05-02 18:17:28,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:17:28,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:28,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:29,098 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:17:29,099 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170840804] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:17:29,099 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:17:29,099 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 77] total 79 [2021-05-02 18:17:29,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523478190] [2021-05-02 18:17:29,099 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-05-02 18:17:29,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:17:29,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-05-02 18:17:29,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2021-05-02 18:17:29,100 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand has 79 states, 79 states have (on average 2.0) internal successors, (158), 78 states have internal predecessors, (158), 1 states have call successors, (3), 2 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 18:17:34,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:17:34,968 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2021-05-02 18:17:34,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-05-02 18:17:34,968 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.0) internal successors, (158), 78 states have internal predecessors, (158), 1 states have call successors, (3), 2 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 157 [2021-05-02 18:17:34,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:17:34,969 INFO L225 Difference]: With dead ends: 161 [2021-05-02 18:17:34,969 INFO L226 Difference]: Without dead ends: 161 [2021-05-02 18:17:34,970 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3068 ImplicationChecksByTransitivity, 6769.9ms TimeCoverageRelationStatistics Valid=8856, Invalid=14706, Unknown=0, NotChecked=0, Total=23562 [2021-05-02 18:17:34,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-05-02 18:17:34,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 160. [2021-05-02 18:17:34,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 156 states have (on average 1.0064102564102564) internal successors, (157), 156 states have internal predecessors, (157), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:17:34,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 160 transitions. [2021-05-02 18:17:34,972 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 160 transitions. Word has length 157 [2021-05-02 18:17:34,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:17:34,990 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 160 transitions. [2021-05-02 18:17:34,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 79 states, 79 states have (on average 2.0) internal successors, (158), 78 states have internal predecessors, (158), 1 states have call successors, (3), 2 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 18:17:34,990 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 160 transitions. [2021-05-02 18:17:34,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-05-02 18:17:34,990 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:17:34,991 INFO L523 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:17:35,200 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-05-02 18:17:35,201 INFO L428 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:17:35,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:17:35,201 INFO L82 PathProgramCache]: Analyzing trace with hash 781461391, now seen corresponding path program 8 times [2021-05-02 18:17:35,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:17:35,202 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685443530] [2021-05-02 18:17:35,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:17:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:17:37,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:17:37,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:17:37,672 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:17:37,673 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:17:37,673 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685443530] [2021-05-02 18:17:37,673 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685443530] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:17:37,673 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961852021] [2021-05-02 18:17:37,673 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 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 18:17:37,742 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:17:37,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:17:37,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 77 conjunts are in the unsatisfiable core [2021-05-02 18:17:37,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:17:37,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:37,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:38,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:38,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:38,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:38,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:38,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:38,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:38,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:38,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:38,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:38,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:38,018 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:17:38,018 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961852021] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:17:38,018 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:17:38,018 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 78] total 80 [2021-05-02 18:17:38,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310966627] [2021-05-02 18:17:38,019 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states [2021-05-02 18:17:38,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:17:38,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-05-02 18:17:38,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3083, Invalid=3237, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 18:17:38,021 INFO L87 Difference]: Start difference. First operand 160 states and 160 transitions. Second operand has 80 states, 80 states have (on average 2.0) internal successors, (160), 79 states have internal predecessors, (160), 1 states have call successors, (3), 2 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 18:17:44,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:17:44,134 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2021-05-02 18:17:44,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-05-02 18:17:44,134 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.0) internal successors, (160), 79 states have internal predecessors, (160), 1 states have call successors, (3), 2 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 159 [2021-05-02 18:17:44,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:17:44,135 INFO L225 Difference]: With dead ends: 163 [2021-05-02 18:17:44,135 INFO L226 Difference]: Without dead ends: 163 [2021-05-02 18:17:44,136 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3147 ImplicationChecksByTransitivity, 6978.8ms TimeCoverageRelationStatistics Valid=9088, Invalid=15092, Unknown=0, NotChecked=0, Total=24180 [2021-05-02 18:17:44,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-05-02 18:17:44,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 162. [2021-05-02 18:17:44,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 158 states have (on average 1.0063291139240507) internal successors, (159), 158 states have internal predecessors, (159), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:17:44,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2021-05-02 18:17:44,138 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 159 [2021-05-02 18:17:44,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:17:44,139 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2021-05-02 18:17:44,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 80 states, 80 states have (on average 2.0) internal successors, (160), 79 states have internal predecessors, (160), 1 states have call successors, (3), 2 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 18:17:44,139 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2021-05-02 18:17:44,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-05-02 18:17:44,139 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:17:44,139 INFO L523 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:17:44,348 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-05-02 18:17:44,349 INFO L428 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:17:44,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:17:44,350 INFO L82 PathProgramCache]: Analyzing trace with hash -635806580, now seen corresponding path program 9 times [2021-05-02 18:17:44,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:17:44,350 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423217283] [2021-05-02 18:17:44,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:17:44,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:17:46,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:17:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:17:46,913 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:17:46,913 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:17:46,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423217283] [2021-05-02 18:17:46,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423217283] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:17:46,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127868572] [2021-05-02 18:17:46,913 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 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 18:17:46,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-05-02 18:17:46,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:17:46,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 78 conjunts are in the unsatisfiable core [2021-05-02 18:17:46,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:17:47,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:47,270 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:17:47,270 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127868572] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:17:47,270 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:17:47,270 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 79] total 81 [2021-05-02 18:17:47,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725215091] [2021-05-02 18:17:47,271 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states [2021-05-02 18:17:47,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:17:47,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-05-02 18:17:47,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3162, Invalid=3318, Unknown=0, NotChecked=0, Total=6480 [2021-05-02 18:17:47,272 INFO L87 Difference]: Start difference. First operand 162 states and 162 transitions. Second operand has 81 states, 81 states have (on average 2.0) internal successors, (162), 80 states have internal predecessors, (162), 1 states have call successors, (3), 2 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 18:17:53,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:17:53,188 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2021-05-02 18:17:53,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-05-02 18:17:53,188 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.0) internal successors, (162), 80 states have internal predecessors, (162), 1 states have call successors, (3), 2 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 161 [2021-05-02 18:17:53,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:17:53,189 INFO L225 Difference]: With dead ends: 165 [2021-05-02 18:17:53,189 INFO L226 Difference]: Without dead ends: 165 [2021-05-02 18:17:53,190 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3227 ImplicationChecksByTransitivity, 7131.8ms TimeCoverageRelationStatistics Valid=9323, Invalid=15483, Unknown=0, NotChecked=0, Total=24806 [2021-05-02 18:17:53,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-05-02 18:17:53,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 164. [2021-05-02 18:17:53,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 160 states have (on average 1.00625) internal successors, (161), 160 states have internal predecessors, (161), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:17:53,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 164 transitions. [2021-05-02 18:17:53,192 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 164 transitions. Word has length 161 [2021-05-02 18:17:53,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:17:53,192 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 164 transitions. [2021-05-02 18:17:53,192 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 81 states, 81 states have (on average 2.0) internal successors, (162), 80 states have internal predecessors, (162), 1 states have call successors, (3), 2 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 18:17:53,192 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 164 transitions. [2021-05-02 18:17:53,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-05-02 18:17:53,193 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:17:53,193 INFO L523 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:17:53,400 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-05-02 18:17:53,401 INFO L428 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:17:53,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:17:53,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1125693879, now seen corresponding path program 10 times [2021-05-02 18:17:53,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:17:53,401 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125275031] [2021-05-02 18:17:53,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:17:53,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:17:56,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:17:56,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:17:56,082 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:17:56,082 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:17:56,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125275031] [2021-05-02 18:17:56,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125275031] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:17:56,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140608023] [2021-05-02 18:17:56,082 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 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 18:17:56,153 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:17:56,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:17:56,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 79 conjunts are in the unsatisfiable core [2021-05-02 18:17:56,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:17:56,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:56,454 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:17:56,454 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140608023] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:17:56,454 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:17:56,454 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 80] total 82 [2021-05-02 18:17:56,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151354500] [2021-05-02 18:17:56,454 INFO L460 AbstractCegarLoop]: Interpolant automaton has 82 states [2021-05-02 18:17:56,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:17:56,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-05-02 18:17:56,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642 [2021-05-02 18:17:56,456 INFO L87 Difference]: Start difference. First operand 164 states and 164 transitions. Second operand has 82 states, 82 states have (on average 2.0) internal successors, (164), 81 states have internal predecessors, (164), 1 states have call successors, (3), 2 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 18:18:02,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:18:02,230 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2021-05-02 18:18:02,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-05-02 18:18:02,231 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 2.0) internal successors, (164), 81 states have internal predecessors, (164), 1 states have call successors, (3), 2 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 163 [2021-05-02 18:18:02,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:18:02,231 INFO L225 Difference]: With dead ends: 167 [2021-05-02 18:18:02,231 INFO L226 Difference]: Without dead ends: 167 [2021-05-02 18:18:02,233 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3308 ImplicationChecksByTransitivity, 7190.1ms TimeCoverageRelationStatistics Valid=9561, Invalid=15879, Unknown=0, NotChecked=0, Total=25440 [2021-05-02 18:18:02,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-05-02 18:18:02,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 166. [2021-05-02 18:18:02,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 162 states have (on average 1.0061728395061729) internal successors, (163), 162 states have internal predecessors, (163), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:18:02,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2021-05-02 18:18:02,235 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 163 [2021-05-02 18:18:02,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:18:02,235 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2021-05-02 18:18:02,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 82 states, 82 states have (on average 2.0) internal successors, (164), 81 states have internal predecessors, (164), 1 states have call successors, (3), 2 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 18:18:02,235 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2021-05-02 18:18:02,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-05-02 18:18:02,236 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:18:02,236 INFO L523 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:18:02,444 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-05-02 18:18:02,445 INFO L428 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:18:02,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:18:02,445 INFO L82 PathProgramCache]: Analyzing trace with hash 539014342, now seen corresponding path program 11 times [2021-05-02 18:18:02,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:18:02,445 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104577938] [2021-05-02 18:18:02,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:18:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:18:05,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:18:05,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:18:05,023 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:18:05,023 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:18:05,023 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104577938] [2021-05-02 18:18:05,023 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104577938] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:18:05,024 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905632451] [2021-05-02 18:18:05,024 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 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 18:18:05,096 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-05-02 18:18:05,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:18:05,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 80 conjunts are in the unsatisfiable core [2021-05-02 18:18:05,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:18:05,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:05,387 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:18:05,387 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905632451] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:18:05,388 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:18:05,388 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 81] total 83 [2021-05-02 18:18:05,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404084167] [2021-05-02 18:18:05,388 INFO L460 AbstractCegarLoop]: Interpolant automaton has 83 states [2021-05-02 18:18:05,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:18:05,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-05-02 18:18:05,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806 [2021-05-02 18:18:05,390 INFO L87 Difference]: Start difference. First operand 166 states and 166 transitions. Second operand has 83 states, 83 states have (on average 2.0) internal successors, (166), 82 states have internal predecessors, (166), 1 states have call successors, (3), 2 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 18:18:12,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:18:12,277 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2021-05-02 18:18:12,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-05-02 18:18:12,277 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.0) internal successors, (166), 82 states have internal predecessors, (166), 1 states have call successors, (3), 2 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 165 [2021-05-02 18:18:12,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:18:12,278 INFO L225 Difference]: With dead ends: 169 [2021-05-02 18:18:12,278 INFO L226 Difference]: Without dead ends: 169 [2021-05-02 18:18:12,279 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3390 ImplicationChecksByTransitivity, 7337.1ms TimeCoverageRelationStatistics Valid=9802, Invalid=16280, Unknown=0, NotChecked=0, Total=26082 [2021-05-02 18:18:12,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-05-02 18:18:12,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 168. [2021-05-02 18:18:12,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 164 states have (on average 1.0060975609756098) internal successors, (165), 164 states have internal predecessors, (165), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:18:12,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 168 transitions. [2021-05-02 18:18:12,281 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 168 transitions. Word has length 165 [2021-05-02 18:18:12,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:18:12,281 INFO L480 AbstractCegarLoop]: Abstraction has 168 states and 168 transitions. [2021-05-02 18:18:12,281 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 83 states, 83 states have (on average 2.0) internal successors, (166), 82 states have internal predecessors, (166), 1 states have call successors, (3), 2 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 18:18:12,281 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 168 transitions. [2021-05-02 18:18:12,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-05-02 18:18:12,282 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:18:12,282 INFO L523 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:18:12,492 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-05-02 18:18:12,493 INFO L428 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:18:12,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:18:12,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1699186685, now seen corresponding path program 12 times [2021-05-02 18:18:12,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:18:12,494 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958674791] [2021-05-02 18:18:12,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:18:12,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:18:15,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:18:15,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:18:15,316 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:18:15,316 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:18:15,316 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958674791] [2021-05-02 18:18:15,317 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958674791] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:18:15,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834901035] [2021-05-02 18:18:15,317 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 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 18:18:15,397 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-05-02 18:18:15,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:18:15,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 81 conjunts are in the unsatisfiable core [2021-05-02 18:18:15,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:18:15,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:15,705 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:18:15,705 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834901035] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:18:15,705 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:18:15,705 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 82] total 84 [2021-05-02 18:18:15,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437106867] [2021-05-02 18:18:15,706 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states [2021-05-02 18:18:15,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:18:15,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-05-02 18:18:15,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3405, Invalid=3567, Unknown=0, NotChecked=0, Total=6972 [2021-05-02 18:18:15,707 INFO L87 Difference]: Start difference. First operand 168 states and 168 transitions. Second operand has 84 states, 84 states have (on average 2.0) internal successors, (168), 83 states have internal predecessors, (168), 1 states have call successors, (3), 2 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 18:18:22,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:18:22,597 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2021-05-02 18:18:22,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-05-02 18:18:22,598 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 2.0) internal successors, (168), 83 states have internal predecessors, (168), 1 states have call successors, (3), 2 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 167 [2021-05-02 18:18:22,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:18:22,599 INFO L225 Difference]: With dead ends: 171 [2021-05-02 18:18:22,599 INFO L226 Difference]: Without dead ends: 171 [2021-05-02 18:18:22,600 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3473 ImplicationChecksByTransitivity, 7685.5ms TimeCoverageRelationStatistics Valid=10046, Invalid=16686, Unknown=0, NotChecked=0, Total=26732 [2021-05-02 18:18:22,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-05-02 18:18:22,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 170. [2021-05-02 18:18:22,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 166 states have (on average 1.0060240963855422) internal successors, (167), 166 states have internal predecessors, (167), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:18:22,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 170 transitions. [2021-05-02 18:18:22,602 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 170 transitions. Word has length 167 [2021-05-02 18:18:22,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:18:22,602 INFO L480 AbstractCegarLoop]: Abstraction has 170 states and 170 transitions. [2021-05-02 18:18:22,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 84 states, 84 states have (on average 2.0) internal successors, (168), 83 states have internal predecessors, (168), 1 states have call successors, (3), 2 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 18:18:22,602 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 170 transitions. [2021-05-02 18:18:22,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-05-02 18:18:22,602 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:18:22,602 INFO L523 BasicCegarLoop]: trace histogram [13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:18:22,812 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:18:22,813 INFO L428 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:18:22,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:18:22,813 INFO L82 PathProgramCache]: Analyzing trace with hash -831758336, now seen corresponding path program 13 times [2021-05-02 18:18:22,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:18:22,813 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917592438] [2021-05-02 18:18:22,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:18:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:18:25,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:18:25,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:18:25,731 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:18:25,732 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:18:25,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917592438] [2021-05-02 18:18:25,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917592438] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:18:25,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832150380] [2021-05-02 18:18:25,732 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 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 18:18:25,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:18:25,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 82 conjunts are in the unsatisfiable core [2021-05-02 18:18:25,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:18:25,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:25,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:26,090 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:18:26,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832150380] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:18:26,091 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:18:26,091 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 83] total 85 [2021-05-02 18:18:26,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968718093] [2021-05-02 18:18:26,091 INFO L460 AbstractCegarLoop]: Interpolant automaton has 85 states [2021-05-02 18:18:26,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:18:26,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-05-02 18:18:26,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140 [2021-05-02 18:18:26,092 INFO L87 Difference]: Start difference. First operand 170 states and 170 transitions. Second operand has 85 states, 85 states have (on average 2.0) internal successors, (170), 84 states have internal predecessors, (170), 1 states have call successors, (3), 2 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 18:18:32,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:18:32,652 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2021-05-02 18:18:32,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-05-02 18:18:32,652 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.0) internal successors, (170), 84 states have internal predecessors, (170), 1 states have call successors, (3), 2 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 169 [2021-05-02 18:18:32,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:18:32,653 INFO L225 Difference]: With dead ends: 173 [2021-05-02 18:18:32,653 INFO L226 Difference]: Without dead ends: 173 [2021-05-02 18:18:32,654 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3557 ImplicationChecksByTransitivity, 7736.6ms TimeCoverageRelationStatistics Valid=10293, Invalid=17097, Unknown=0, NotChecked=0, Total=27390 [2021-05-02 18:18:32,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-05-02 18:18:32,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 172. [2021-05-02 18:18:32,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 168 states have (on average 1.005952380952381) internal successors, (169), 168 states have internal predecessors, (169), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:18:32,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 172 transitions. [2021-05-02 18:18:32,656 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 172 transitions. Word has length 169 [2021-05-02 18:18:32,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:18:32,657 INFO L480 AbstractCegarLoop]: Abstraction has 172 states and 172 transitions. [2021-05-02 18:18:32,657 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 85 states, 85 states have (on average 2.0) internal successors, (170), 84 states have internal predecessors, (170), 1 states have call successors, (3), 2 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 18:18:32,657 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 172 transitions. [2021-05-02 18:18:32,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-05-02 18:18:32,657 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:18:32,657 INFO L523 BasicCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:18:32,864 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-05-02 18:18:32,865 INFO L428 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:18:32,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:18:32,865 INFO L82 PathProgramCache]: Analyzing trace with hash -456770371, now seen corresponding path program 14 times [2021-05-02 18:18:32,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:18:32,865 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552763683] [2021-05-02 18:18:32,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:18:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:18:35,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:18:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:18:35,918 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:18:35,919 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:18:35,919 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552763683] [2021-05-02 18:18:35,919 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552763683] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:18:35,919 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003981699] [2021-05-02 18:18:35,919 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 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 18:18:35,989 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:18:35,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:18:35,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 83 conjunts are in the unsatisfiable core [2021-05-02 18:18:35,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:18:36,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:36,285 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:18:36,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003981699] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:18:36,286 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:18:36,286 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 84] total 86 [2021-05-02 18:18:36,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867453480] [2021-05-02 18:18:36,286 INFO L460 AbstractCegarLoop]: Interpolant automaton has 86 states [2021-05-02 18:18:36,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:18:36,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2021-05-02 18:18:36,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3572, Invalid=3738, Unknown=0, NotChecked=0, Total=7310 [2021-05-02 18:18:36,287 INFO L87 Difference]: Start difference. First operand 172 states and 172 transitions. Second operand has 86 states, 86 states have (on average 2.0) internal successors, (172), 85 states have internal predecessors, (172), 1 states have call successors, (3), 2 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 18:18:42,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:18:42,425 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2021-05-02 18:18:42,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-05-02 18:18:42,425 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 2.0) internal successors, (172), 85 states have internal predecessors, (172), 1 states have call successors, (3), 2 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 171 [2021-05-02 18:18:42,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:18:42,426 INFO L225 Difference]: With dead ends: 175 [2021-05-02 18:18:42,426 INFO L226 Difference]: Without dead ends: 175 [2021-05-02 18:18:42,428 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3642 ImplicationChecksByTransitivity, 7567.0ms TimeCoverageRelationStatistics Valid=10543, Invalid=17513, Unknown=0, NotChecked=0, Total=28056 [2021-05-02 18:18:42,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-05-02 18:18:42,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2021-05-02 18:18:42,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 170 states have (on average 1.0058823529411764) internal successors, (171), 170 states have internal predecessors, (171), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:18:42,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 174 transitions. [2021-05-02 18:18:42,446 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 174 transitions. Word has length 171 [2021-05-02 18:18:42,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:18:42,446 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 174 transitions. [2021-05-02 18:18:42,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 86 states, 86 states have (on average 2.0) internal successors, (172), 85 states have internal predecessors, (172), 1 states have call successors, (3), 2 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 18:18:42,446 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 174 transitions. [2021-05-02 18:18:42,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-05-02 18:18:42,447 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:18:42,447 INFO L523 BasicCegarLoop]: trace histogram [15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:18:42,647 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:18:42,648 INFO L428 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:18:42,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:18:42,648 INFO L82 PathProgramCache]: Analyzing trace with hash -870588870, now seen corresponding path program 15 times [2021-05-02 18:18:42,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:18:42,648 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310940835] [2021-05-02 18:18:42,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:18:42,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:18:45,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:18:45,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:18:45,162 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:18:45,162 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:18:45,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310940835] [2021-05-02 18:18:45,162 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310940835] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:18:45,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227844317] [2021-05-02 18:18:45,163 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 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 18:18:45,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-05-02 18:18:45,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:18:45,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 84 conjunts are in the unsatisfiable core [2021-05-02 18:18:45,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:18:45,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:45,561 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:18:45,561 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227844317] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:18:45,561 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:18:45,561 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 85] total 87 [2021-05-02 18:18:45,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382382714] [2021-05-02 18:18:45,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2021-05-02 18:18:45,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:18:45,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-05-02 18:18:45,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2021-05-02 18:18:45,563 INFO L87 Difference]: Start difference. First operand 174 states and 174 transitions. Second operand has 87 states, 87 states have (on average 2.0) internal successors, (174), 86 states have internal predecessors, (174), 1 states have call successors, (3), 2 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 18:18:52,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:18:52,678 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2021-05-02 18:18:52,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-05-02 18:18:52,679 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.0) internal successors, (174), 86 states have internal predecessors, (174), 1 states have call successors, (3), 2 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 173 [2021-05-02 18:18:52,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:18:52,679 INFO L225 Difference]: With dead ends: 177 [2021-05-02 18:18:52,679 INFO L226 Difference]: Without dead ends: 177 [2021-05-02 18:18:52,681 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3728 ImplicationChecksByTransitivity, 7525.8ms TimeCoverageRelationStatistics Valid=10796, Invalid=17934, Unknown=0, NotChecked=0, Total=28730 [2021-05-02 18:18:52,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-05-02 18:18:52,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 176. [2021-05-02 18:18:52,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 172 states have (on average 1.005813953488372) internal successors, (173), 172 states have internal predecessors, (173), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:18:52,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2021-05-02 18:18:52,682 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 173 [2021-05-02 18:18:52,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:18:52,683 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2021-05-02 18:18:52,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 87 states, 87 states have (on average 2.0) internal successors, (174), 86 states have internal predecessors, (174), 1 states have call successors, (3), 2 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 18:18:52,683 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2021-05-02 18:18:52,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-05-02 18:18:52,683 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:18:52,684 INFO L523 BasicCegarLoop]: trace histogram [16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:18:52,892 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-05-02 18:18:52,893 INFO L428 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:18:52,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:18:52,893 INFO L82 PathProgramCache]: Analyzing trace with hash 881792119, now seen corresponding path program 16 times [2021-05-02 18:18:52,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:18:52,893 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742956718] [2021-05-02 18:18:52,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:18:52,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:18:56,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:18:56,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:18:56,079 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:18:56,079 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:18:56,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742956718] [2021-05-02 18:18:56,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742956718] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:18:56,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551081308] [2021-05-02 18:18:56,079 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 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 18:18:56,144 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:18:56,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:18:56,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 85 conjunts are in the unsatisfiable core [2021-05-02 18:18:56,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:18:56,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:56,451 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:18:56,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551081308] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:18:56,451 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:18:56,451 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 86] total 88 [2021-05-02 18:18:56,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8914749] [2021-05-02 18:18:56,452 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2021-05-02 18:18:56,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:18:56,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-05-02 18:18:56,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 18:18:56,453 INFO L87 Difference]: Start difference. First operand 176 states and 176 transitions. Second operand has 88 states, 88 states have (on average 2.0) internal successors, (176), 87 states have internal predecessors, (176), 1 states have call successors, (3), 2 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 18:19:03,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:19:03,721 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2021-05-02 18:19:03,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-02 18:19:03,721 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 2.0) internal successors, (176), 87 states have internal predecessors, (176), 1 states have call successors, (3), 2 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 175 [2021-05-02 18:19:03,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:19:03,722 INFO L225 Difference]: With dead ends: 179 [2021-05-02 18:19:03,722 INFO L226 Difference]: Without dead ends: 179 [2021-05-02 18:19:03,723 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3815 ImplicationChecksByTransitivity, 8380.3ms TimeCoverageRelationStatistics Valid=11052, Invalid=18360, Unknown=0, NotChecked=0, Total=29412 [2021-05-02 18:19:03,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-05-02 18:19:03,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 178. [2021-05-02 18:19:03,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 174 states have (on average 1.0057471264367817) internal successors, (175), 174 states have internal predecessors, (175), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:19:03,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 178 transitions. [2021-05-02 18:19:03,725 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 178 transitions. Word has length 175 [2021-05-02 18:19:03,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:19:03,725 INFO L480 AbstractCegarLoop]: Abstraction has 178 states and 178 transitions. [2021-05-02 18:19:03,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 88 states, 88 states have (on average 2.0) internal successors, (176), 87 states have internal predecessors, (176), 1 states have call successors, (3), 2 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 18:19:03,725 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 178 transitions. [2021-05-02 18:19:03,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-05-02 18:19:03,725 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:19:03,726 INFO L523 BasicCegarLoop]: trace histogram [17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:19:03,936 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:19:03,937 INFO L428 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:19:03,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:19:03,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1292742516, now seen corresponding path program 17 times [2021-05-02 18:19:03,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:19:03,938 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844615603] [2021-05-02 18:19:03,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:19:03,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:19:06,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:19:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:19:06,957 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:19:06,957 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:19:06,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844615603] [2021-05-02 18:19:06,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844615603] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:19:06,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095012211] [2021-05-02 18:19:06,957 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 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 18:19:07,049 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-05-02 18:19:07,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:19:07,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 86 conjunts are in the unsatisfiable core [2021-05-02 18:19:07,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:19:07,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:07,364 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:19:07,365 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095012211] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:19:07,365 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:19:07,365 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 87] total 89 [2021-05-02 18:19:07,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639459202] [2021-05-02 18:19:07,367 INFO L460 AbstractCegarLoop]: Interpolant automaton has 89 states [2021-05-02 18:19:07,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:19:07,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-05-02 18:19:07,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3830, Invalid=4002, Unknown=0, NotChecked=0, Total=7832 [2021-05-02 18:19:07,368 INFO L87 Difference]: Start difference. First operand 178 states and 178 transitions. Second operand has 89 states, 89 states have (on average 2.0) internal successors, (178), 88 states have internal predecessors, (178), 1 states have call successors, (3), 2 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 18:19:13,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:19:13,740 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2021-05-02 18:19:13,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-05-02 18:19:13,741 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.0) internal successors, (178), 88 states have internal predecessors, (178), 1 states have call successors, (3), 2 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 177 [2021-05-02 18:19:13,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:19:13,742 INFO L225 Difference]: With dead ends: 181 [2021-05-02 18:19:13,742 INFO L226 Difference]: Without dead ends: 181 [2021-05-02 18:19:13,743 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3903 ImplicationChecksByTransitivity, 7937.3ms TimeCoverageRelationStatistics Valid=11311, Invalid=18791, Unknown=0, NotChecked=0, Total=30102 [2021-05-02 18:19:13,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-05-02 18:19:13,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 180. [2021-05-02 18:19:13,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 176 states have (on average 1.0056818181818181) internal successors, (177), 176 states have internal predecessors, (177), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:19:13,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 180 transitions. [2021-05-02 18:19:13,744 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 180 transitions. Word has length 177 [2021-05-02 18:19:13,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:19:13,745 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 180 transitions. [2021-05-02 18:19:13,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 89 states, 89 states have (on average 2.0) internal successors, (178), 88 states have internal predecessors, (178), 1 states have call successors, (3), 2 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 18:19:13,745 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 180 transitions. [2021-05-02 18:19:13,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-05-02 18:19:13,745 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:19:13,745 INFO L523 BasicCegarLoop]: trace histogram [18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:19:13,952 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-05-02 18:19:13,953 INFO L428 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:19:13,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:19:13,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1079082801, now seen corresponding path program 18 times [2021-05-02 18:19:13,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:19:13,953 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325986151] [2021-05-02 18:19:13,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:19:13,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:19:17,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:19:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:19:17,079 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:19:17,079 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:19:17,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325986151] [2021-05-02 18:19:17,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325986151] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:19:17,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502862004] [2021-05-02 18:19:17,079 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 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 18:19:17,186 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-05-02 18:19:17,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:19:17,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 87 conjunts are in the unsatisfiable core [2021-05-02 18:19:17,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:19:17,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:17,572 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:19:17,572 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502862004] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:19:17,572 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:19:17,572 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 88] total 90 [2021-05-02 18:19:17,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87466558] [2021-05-02 18:19:17,573 INFO L460 AbstractCegarLoop]: Interpolant automaton has 90 states [2021-05-02 18:19:17,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:19:17,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-05-02 18:19:17,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3918, Invalid=4092, Unknown=0, NotChecked=0, Total=8010 [2021-05-02 18:19:17,574 INFO L87 Difference]: Start difference. First operand 180 states and 180 transitions. Second operand has 90 states, 90 states have (on average 2.0) internal successors, (180), 89 states have internal predecessors, (180), 1 states have call successors, (3), 2 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 18:19:25,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:19:25,183 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2021-05-02 18:19:25,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-05-02 18:19:25,184 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 2.0) internal successors, (180), 89 states have internal predecessors, (180), 1 states have call successors, (3), 2 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 179 [2021-05-02 18:19:25,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:19:25,185 INFO L225 Difference]: With dead ends: 183 [2021-05-02 18:19:25,185 INFO L226 Difference]: Without dead ends: 183 [2021-05-02 18:19:25,186 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3992 ImplicationChecksByTransitivity, 9027.5ms TimeCoverageRelationStatistics Valid=11573, Invalid=19227, Unknown=0, NotChecked=0, Total=30800 [2021-05-02 18:19:25,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-05-02 18:19:25,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 182. [2021-05-02 18:19:25,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 178 states have (on average 1.0056179775280898) internal successors, (179), 178 states have internal predecessors, (179), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:19:25,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 182 transitions. [2021-05-02 18:19:25,188 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 182 transitions. Word has length 179 [2021-05-02 18:19:25,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:19:25,189 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 182 transitions. [2021-05-02 18:19:25,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 90 states, 90 states have (on average 2.0) internal successors, (180), 89 states have internal predecessors, (180), 1 states have call successors, (3), 2 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 18:19:25,189 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 182 transitions. [2021-05-02 18:19:25,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-05-02 18:19:25,189 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:19:25,190 INFO L523 BasicCegarLoop]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:19:25,407 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-05-02 18:19:25,407 INFO L428 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:19:25,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:19:25,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1910526894, now seen corresponding path program 19 times [2021-05-02 18:19:25,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:19:25,408 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758234803] [2021-05-02 18:19:25,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:19:25,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:19:28,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:19:28,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:19:28,728 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:19:28,729 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:19:28,729 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758234803] [2021-05-02 18:19:28,729 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758234803] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:19:28,729 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198608136] [2021-05-02 18:19:28,729 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 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 18:19:28,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:19:28,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 88 conjunts are in the unsatisfiable core [2021-05-02 18:19:28,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:19:28,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:28,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:29,118 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:19:29,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198608136] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:19:29,118 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:19:29,118 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 89] total 91 [2021-05-02 18:19:29,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038270301] [2021-05-02 18:19:29,119 INFO L460 AbstractCegarLoop]: Interpolant automaton has 91 states [2021-05-02 18:19:29,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:19:29,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-05-02 18:19:29,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2021-05-02 18:19:29,120 INFO L87 Difference]: Start difference. First operand 182 states and 182 transitions. Second operand has 91 states, 91 states have (on average 2.0) internal successors, (182), 90 states have internal predecessors, (182), 1 states have call successors, (3), 2 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 18:19:35,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:19:35,199 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2021-05-02 18:19:35,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-05-02 18:19:35,200 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.0) internal successors, (182), 90 states have internal predecessors, (182), 1 states have call successors, (3), 2 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 181 [2021-05-02 18:19:35,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:19:35,200 INFO L225 Difference]: With dead ends: 185 [2021-05-02 18:19:35,200 INFO L226 Difference]: Without dead ends: 185 [2021-05-02 18:19:35,201 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4082 ImplicationChecksByTransitivity, 7770.4ms TimeCoverageRelationStatistics Valid=11838, Invalid=19668, Unknown=0, NotChecked=0, Total=31506 [2021-05-02 18:19:35,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-05-02 18:19:35,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 184. [2021-05-02 18:19:35,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 180 states have (on average 1.0055555555555555) internal successors, (181), 180 states have internal predecessors, (181), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:19:35,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2021-05-02 18:19:35,204 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 181 [2021-05-02 18:19:35,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:19:35,204 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2021-05-02 18:19:35,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 91 states, 91 states have (on average 2.0) internal successors, (182), 90 states have internal predecessors, (182), 1 states have call successors, (3), 2 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 18:19:35,204 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2021-05-02 18:19:35,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-05-02 18:19:35,205 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:19:35,205 INFO L523 BasicCegarLoop]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:19:35,424 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-05-02 18:19:35,424 INFO L428 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:19:35,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:19:35,424 INFO L82 PathProgramCache]: Analyzing trace with hash 2064383211, now seen corresponding path program 20 times [2021-05-02 18:19:35,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:19:35,424 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811426618] [2021-05-02 18:19:35,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:19:35,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:19:38,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:19:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:19:38,757 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:19:38,757 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:19:38,757 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811426618] [2021-05-02 18:19:38,757 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811426618] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:19:38,757 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727694900] [2021-05-02 18:19:38,757 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 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 18:19:38,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:19:38,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:19:38,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 89 conjunts are in the unsatisfiable core [2021-05-02 18:19:38,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:19:38,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:38,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:39,162 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:19:39,163 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727694900] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:19:39,163 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:19:39,163 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 90] total 92 [2021-05-02 18:19:39,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943370244] [2021-05-02 18:19:39,163 INFO L460 AbstractCegarLoop]: Interpolant automaton has 92 states [2021-05-02 18:19:39,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:19:39,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-05-02 18:19:39,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4097, Invalid=4275, Unknown=0, NotChecked=0, Total=8372 [2021-05-02 18:19:39,164 INFO L87 Difference]: Start difference. First operand 184 states and 184 transitions. Second operand has 92 states, 92 states have (on average 2.0) internal successors, (184), 91 states have internal predecessors, (184), 1 states have call successors, (3), 2 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 18:19:47,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:19:47,265 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2021-05-02 18:19:47,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-05-02 18:19:47,266 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 2.0) internal successors, (184), 91 states have internal predecessors, (184), 1 states have call successors, (3), 2 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 183 [2021-05-02 18:19:47,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:19:47,266 INFO L225 Difference]: With dead ends: 187 [2021-05-02 18:19:47,267 INFO L226 Difference]: Without dead ends: 187 [2021-05-02 18:19:47,268 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4173 ImplicationChecksByTransitivity, 9174.2ms TimeCoverageRelationStatistics Valid=12106, Invalid=20114, Unknown=0, NotChecked=0, Total=32220 [2021-05-02 18:19:47,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-05-02 18:19:47,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 186. [2021-05-02 18:19:47,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 182 states have (on average 1.0054945054945055) internal successors, (183), 182 states have internal predecessors, (183), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:19:47,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 186 transitions. [2021-05-02 18:19:47,270 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 186 transitions. Word has length 183 [2021-05-02 18:19:47,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:19:47,270 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 186 transitions. [2021-05-02 18:19:47,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 92 states, 92 states have (on average 2.0) internal successors, (184), 91 states have internal predecessors, (184), 1 states have call successors, (3), 2 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 18:19:47,270 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 186 transitions. [2021-05-02 18:19:47,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-05-02 18:19:47,271 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:19:47,271 INFO L523 BasicCegarLoop]: trace histogram [21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:19:47,471 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-05-02 18:19:47,471 INFO L428 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:19:47,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:19:47,472 INFO L82 PathProgramCache]: Analyzing trace with hash -403551512, now seen corresponding path program 21 times [2021-05-02 18:19:47,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:19:47,472 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787647667] [2021-05-02 18:19:47,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:19:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:19:50,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:19:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:19:50,853 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:19:50,853 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:19:50,853 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787647667] [2021-05-02 18:19:50,853 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787647667] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:19:50,853 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800183247] [2021-05-02 18:19:50,853 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 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 18:19:50,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-05-02 18:19:50,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:19:50,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 90 conjunts are in the unsatisfiable core [2021-05-02 18:19:50,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:19:50,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:50,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:50,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:50,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:50,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:50,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:50,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:50,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:50,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:50,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:50,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:50,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:50,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:50,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:50,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:50,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:50,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:50,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:51,257 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:19:51,257 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800183247] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:19:51,257 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:19:51,257 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 91] total 93 [2021-05-02 18:19:51,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96255899] [2021-05-02 18:19:51,258 INFO L460 AbstractCegarLoop]: Interpolant automaton has 93 states [2021-05-02 18:19:51,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:19:51,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-05-02 18:19:51,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556 [2021-05-02 18:19:51,259 INFO L87 Difference]: Start difference. First operand 186 states and 186 transitions. Second operand has 93 states, 93 states have (on average 2.0) internal successors, (186), 92 states have internal predecessors, (186), 1 states have call successors, (3), 2 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 18:19:58,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:19:58,815 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2021-05-02 18:19:58,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-05-02 18:19:58,815 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.0) internal successors, (186), 92 states have internal predecessors, (186), 1 states have call successors, (3), 2 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 185 [2021-05-02 18:19:58,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:19:58,816 INFO L225 Difference]: With dead ends: 189 [2021-05-02 18:19:58,816 INFO L226 Difference]: Without dead ends: 189 [2021-05-02 18:19:58,817 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4265 ImplicationChecksByTransitivity, 8953.6ms TimeCoverageRelationStatistics Valid=12377, Invalid=20565, Unknown=0, NotChecked=0, Total=32942 [2021-05-02 18:19:58,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-05-02 18:19:58,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 188. [2021-05-02 18:19:58,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 184 states have (on average 1.0054347826086956) internal successors, (185), 184 states have internal predecessors, (185), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:19:58,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 188 transitions. [2021-05-02 18:19:58,819 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 188 transitions. Word has length 185 [2021-05-02 18:19:58,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:19:58,819 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 188 transitions. [2021-05-02 18:19:58,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 93 states, 93 states have (on average 2.0) internal successors, (186), 92 states have internal predecessors, (186), 1 states have call successors, (3), 2 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 18:19:58,819 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 188 transitions. [2021-05-02 18:19:58,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-05-02 18:19:58,820 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:19:58,820 INFO L523 BasicCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:19:59,020 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-05-02 18:19:59,021 INFO L428 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:19:59,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:19:59,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1266872923, now seen corresponding path program 22 times [2021-05-02 18:19:59,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:19:59,022 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383345968] [2021-05-02 18:19:59,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:19:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:20:02,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:20:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:20:02,154 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:20:02,154 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:20:02,154 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383345968] [2021-05-02 18:20:02,154 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383345968] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:20:02,154 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118412360] [2021-05-02 18:20:02,154 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 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 18:20:02,235 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:20:02,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:20:02,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 91 conjunts are in the unsatisfiable core [2021-05-02 18:20:02,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:20:02,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:02,532 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:20:02,532 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118412360] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:20:02,532 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:20:02,532 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 92] total 94 [2021-05-02 18:20:02,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547114933] [2021-05-02 18:20:02,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 94 states [2021-05-02 18:20:02,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:20:02,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-05-02 18:20:02,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742 [2021-05-02 18:20:02,534 INFO L87 Difference]: Start difference. First operand 188 states and 188 transitions. Second operand has 94 states, 94 states have (on average 2.0) internal successors, (188), 93 states have internal predecessors, (188), 1 states have call successors, (3), 2 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 18:20:09,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:20:09,133 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2021-05-02 18:20:09,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-05-02 18:20:09,134 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 2.0) internal successors, (188), 93 states have internal predecessors, (188), 1 states have call successors, (3), 2 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 187 [2021-05-02 18:20:09,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:20:09,135 INFO L225 Difference]: With dead ends: 191 [2021-05-02 18:20:09,135 INFO L226 Difference]: Without dead ends: 191 [2021-05-02 18:20:09,136 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4358 ImplicationChecksByTransitivity, 8334.5ms TimeCoverageRelationStatistics Valid=12651, Invalid=21021, Unknown=0, NotChecked=0, Total=33672 [2021-05-02 18:20:09,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-05-02 18:20:09,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 190. [2021-05-02 18:20:09,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 186 states have (on average 1.0053763440860215) internal successors, (187), 186 states have internal predecessors, (187), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:20:09,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 190 transitions. [2021-05-02 18:20:09,138 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 190 transitions. Word has length 187 [2021-05-02 18:20:09,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:20:09,138 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 190 transitions. [2021-05-02 18:20:09,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 94 states, 94 states have (on average 2.0) internal successors, (188), 93 states have internal predecessors, (188), 1 states have call successors, (3), 2 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 18:20:09,138 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 190 transitions. [2021-05-02 18:20:09,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-05-02 18:20:09,139 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:20:09,139 INFO L523 BasicCegarLoop]: trace histogram [23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:20:09,355 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:20:09,356 INFO L428 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:20:09,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:20:09,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1990060766, now seen corresponding path program 23 times [2021-05-02 18:20:09,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:20:09,356 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984301424] [2021-05-02 18:20:09,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:20:09,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:20:12,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:20:12,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:20:12,891 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:20:12,891 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:20:12,891 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984301424] [2021-05-02 18:20:12,891 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984301424] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:20:12,891 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861042728] [2021-05-02 18:20:12,891 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 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 18:20:12,976 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-05-02 18:20:12,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:20:12,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 92 conjunts are in the unsatisfiable core [2021-05-02 18:20:12,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:20:12,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:12,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:12,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:12,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:13,335 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:20:13,335 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861042728] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:20:13,335 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:20:13,335 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 93] total 95 [2021-05-02 18:20:13,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158154571] [2021-05-02 18:20:13,335 INFO L460 AbstractCegarLoop]: Interpolant automaton has 95 states [2021-05-02 18:20:13,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:20:13,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2021-05-02 18:20:13,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930 [2021-05-02 18:20:13,336 INFO L87 Difference]: Start difference. First operand 190 states and 190 transitions. Second operand has 95 states, 95 states have (on average 2.0) internal successors, (190), 94 states have internal predecessors, (190), 1 states have call successors, (3), 2 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 18:20:21,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:20:21,458 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2021-05-02 18:20:21,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-05-02 18:20:21,459 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.0) internal successors, (190), 94 states have internal predecessors, (190), 1 states have call successors, (3), 2 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 189 [2021-05-02 18:20:21,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:20:21,459 INFO L225 Difference]: With dead ends: 193 [2021-05-02 18:20:21,459 INFO L226 Difference]: Without dead ends: 193 [2021-05-02 18:20:21,461 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4452 ImplicationChecksByTransitivity, 9494.4ms TimeCoverageRelationStatistics Valid=12928, Invalid=21482, Unknown=0, NotChecked=0, Total=34410 [2021-05-02 18:20:21,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-05-02 18:20:21,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 192. [2021-05-02 18:20:21,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 188 states have (on average 1.0053191489361701) internal successors, (189), 188 states have internal predecessors, (189), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:20:21,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 192 transitions. [2021-05-02 18:20:21,462 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 192 transitions. Word has length 189 [2021-05-02 18:20:21,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:20:21,463 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 192 transitions. [2021-05-02 18:20:21,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 95 states, 95 states have (on average 2.0) internal successors, (190), 94 states have internal predecessors, (190), 1 states have call successors, (3), 2 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 18:20:21,463 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 192 transitions. [2021-05-02 18:20:21,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-05-02 18:20:21,463 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:20:21,463 INFO L523 BasicCegarLoop]: trace histogram [24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:20:21,664 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-05-02 18:20:21,664 INFO L428 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:20:21,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:20:21,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1188875937, now seen corresponding path program 24 times [2021-05-02 18:20:21,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:20:21,665 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546252644] [2021-05-02 18:20:21,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:20:21,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:20:25,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:20:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:20:25,158 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:20:25,158 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:20:25,159 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546252644] [2021-05-02 18:20:25,159 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546252644] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:20:25,159 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434440911] [2021-05-02 18:20:25,159 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 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 18:20:25,255 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-05-02 18:20:25,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:20:25,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 93 conjunts are in the unsatisfiable core [2021-05-02 18:20:25,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:20:25,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:25,638 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:20:25,638 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434440911] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:20:25,639 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:20:25,639 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 94] total 96 [2021-05-02 18:20:25,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72405522] [2021-05-02 18:20:25,639 INFO L460 AbstractCegarLoop]: Interpolant automaton has 96 states [2021-05-02 18:20:25,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:20:25,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-05-02 18:20:25,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4467, Invalid=4653, Unknown=0, NotChecked=0, Total=9120 [2021-05-02 18:20:25,640 INFO L87 Difference]: Start difference. First operand 192 states and 192 transitions. Second operand has 96 states, 96 states have (on average 2.0) internal successors, (192), 95 states have internal predecessors, (192), 1 states have call successors, (3), 2 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 18:20:33,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:20:33,744 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2021-05-02 18:20:33,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-05-02 18:20:33,744 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.0) internal successors, (192), 95 states have internal predecessors, (192), 1 states have call successors, (3), 2 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 191 [2021-05-02 18:20:33,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:20:33,745 INFO L225 Difference]: With dead ends: 195 [2021-05-02 18:20:33,745 INFO L226 Difference]: Without dead ends: 195 [2021-05-02 18:20:33,746 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4547 ImplicationChecksByTransitivity, 9571.8ms TimeCoverageRelationStatistics Valid=13208, Invalid=21948, Unknown=0, NotChecked=0, Total=35156 [2021-05-02 18:20:33,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-05-02 18:20:33,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 194. [2021-05-02 18:20:33,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 190 states have (on average 1.0052631578947369) internal successors, (191), 190 states have internal predecessors, (191), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:20:33,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2021-05-02 18:20:33,748 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 191 [2021-05-02 18:20:33,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:20:33,748 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2021-05-02 18:20:33,749 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 96 states, 96 states have (on average 2.0) internal successors, (192), 95 states have internal predecessors, (192), 1 states have call successors, (3), 2 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 18:20:33,749 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2021-05-02 18:20:33,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-05-02 18:20:33,749 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:20:33,749 INFO L523 BasicCegarLoop]: trace histogram [25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:20:33,965 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:20:33,966 INFO L428 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:20:33,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:20:33,966 INFO L82 PathProgramCache]: Analyzing trace with hash -49401252, now seen corresponding path program 25 times [2021-05-02 18:20:33,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:20:33,966 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673152856] [2021-05-02 18:20:33,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:20:33,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:20:37,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:20:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:20:37,414 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:20:37,415 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:20:37,415 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673152856] [2021-05-02 18:20:37,415 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673152856] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:20:37,415 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062921261] [2021-05-02 18:20:37,415 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 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 18:20:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:20:37,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 94 conjunts are in the unsatisfiable core [2021-05-02 18:20:37,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:20:37,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:37,848 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:20:37,849 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062921261] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:20:37,849 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:20:37,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 95] total 97 [2021-05-02 18:20:37,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629292439] [2021-05-02 18:20:37,849 INFO L460 AbstractCegarLoop]: Interpolant automaton has 97 states [2021-05-02 18:20:37,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:20:37,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-05-02 18:20:37,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2021-05-02 18:20:37,850 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand has 97 states, 97 states have (on average 2.0) internal successors, (194), 96 states have internal predecessors, (194), 1 states have call successors, (3), 2 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 18:20:45,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:20:45,318 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2021-05-02 18:20:45,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-05-02 18:20:45,318 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.0) internal successors, (194), 96 states have internal predecessors, (194), 1 states have call successors, (3), 2 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 193 [2021-05-02 18:20:45,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:20:45,319 INFO L225 Difference]: With dead ends: 197 [2021-05-02 18:20:45,319 INFO L226 Difference]: Without dead ends: 197 [2021-05-02 18:20:45,320 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4643 ImplicationChecksByTransitivity, 9612.7ms TimeCoverageRelationStatistics Valid=13491, Invalid=22419, Unknown=0, NotChecked=0, Total=35910 [2021-05-02 18:20:45,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-05-02 18:20:45,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 196. [2021-05-02 18:20:45,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 192 states have (on average 1.0052083333333333) internal successors, (193), 192 states have internal predecessors, (193), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:20:45,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 196 transitions. [2021-05-02 18:20:45,322 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 196 transitions. Word has length 193 [2021-05-02 18:20:45,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:20:45,322 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 196 transitions. [2021-05-02 18:20:45,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 97 states, 97 states have (on average 2.0) internal successors, (194), 96 states have internal predecessors, (194), 1 states have call successors, (3), 2 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 18:20:45,322 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 196 transitions. [2021-05-02 18:20:45,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-05-02 18:20:45,323 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:20:45,323 INFO L523 BasicCegarLoop]: trace histogram [26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:20:45,523 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-05-02 18:20:45,524 INFO L428 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:20:45,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:20:45,524 INFO L82 PathProgramCache]: Analyzing trace with hash -230889447, now seen corresponding path program 26 times [2021-05-02 18:20:45,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:20:45,524 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010684760] [2021-05-02 18:20:45,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:20:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:20:49,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:20:49,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:20:49,207 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:20:49,207 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:20:49,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010684760] [2021-05-02 18:20:49,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010684760] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:20:49,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371049939] [2021-05-02 18:20:49,207 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 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 18:20:49,284 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:20:49,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:20:49,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 95 conjunts are in the unsatisfiable core [2021-05-02 18:20:49,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:20:49,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:49,622 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:20:49,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371049939] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:20:49,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:20:49,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 96] total 98 [2021-05-02 18:20:49,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361064721] [2021-05-02 18:20:49,623 INFO L460 AbstractCegarLoop]: Interpolant automaton has 98 states [2021-05-02 18:20:49,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:20:49,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2021-05-02 18:20:49,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4658, Invalid=4848, Unknown=0, NotChecked=0, Total=9506 [2021-05-02 18:20:49,624 INFO L87 Difference]: Start difference. First operand 196 states and 196 transitions. Second operand has 98 states, 98 states have (on average 2.0) internal successors, (196), 97 states have internal predecessors, (196), 1 states have call successors, (3), 2 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 18:20:57,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:20:57,014 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2021-05-02 18:20:57,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-05-02 18:20:57,014 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 2.0) internal successors, (196), 97 states have internal predecessors, (196), 1 states have call successors, (3), 2 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 195 [2021-05-02 18:20:57,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:20:57,015 INFO L225 Difference]: With dead ends: 199 [2021-05-02 18:20:57,015 INFO L226 Difference]: Without dead ends: 199 [2021-05-02 18:20:57,016 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4740 ImplicationChecksByTransitivity, 9395.4ms TimeCoverageRelationStatistics Valid=13777, Invalid=22895, Unknown=0, NotChecked=0, Total=36672 [2021-05-02 18:20:57,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-05-02 18:20:57,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198. [2021-05-02 18:20:57,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 194 states have (on average 1.0051546391752577) internal successors, (195), 194 states have internal predecessors, (195), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:20:57,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 198 transitions. [2021-05-02 18:20:57,018 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 198 transitions. Word has length 195 [2021-05-02 18:20:57,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:20:57,018 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 198 transitions. [2021-05-02 18:20:57,018 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 98 states, 98 states have (on average 2.0) internal successors, (196), 97 states have internal predecessors, (196), 1 states have call successors, (3), 2 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 18:20:57,018 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 198 transitions. [2021-05-02 18:20:57,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-05-02 18:20:57,019 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:20:57,019 INFO L523 BasicCegarLoop]: trace histogram [27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:20:57,219 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:20:57,221 INFO L428 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:20:57,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:20:57,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1452614294, now seen corresponding path program 27 times [2021-05-02 18:20:57,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:20:57,222 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279468775] [2021-05-02 18:20:57,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:20:57,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:01,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:01,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:01,024 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:01,024 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:01,024 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279468775] [2021-05-02 18:21:01,025 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279468775] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:01,025 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631730377] [2021-05-02 18:21:01,025 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 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 18:21:01,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2021-05-02 18:21:01,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:01,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 96 conjunts are in the unsatisfiable core [2021-05-02 18:21:01,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:01,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:01,640 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:01,640 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631730377] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:01,640 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:01,640 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 97] total 99 [2021-05-02 18:21:01,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099493694] [2021-05-02 18:21:01,641 INFO L460 AbstractCegarLoop]: Interpolant automaton has 99 states [2021-05-02 18:21:01,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:01,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-05-02 18:21:01,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2021-05-02 18:21:01,657 INFO L87 Difference]: Start difference. First operand 198 states and 198 transitions. Second operand has 99 states, 99 states have (on average 2.0) internal successors, (198), 98 states have internal predecessors, (198), 1 states have call successors, (3), 2 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 18:21:10,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:10,614 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2021-05-02 18:21:10,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-05-02 18:21:10,615 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.0) internal successors, (198), 98 states have internal predecessors, (198), 1 states have call successors, (3), 2 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 197 [2021-05-02 18:21:10,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:10,616 INFO L225 Difference]: With dead ends: 201 [2021-05-02 18:21:10,616 INFO L226 Difference]: Without dead ends: 201 [2021-05-02 18:21:10,617 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4838 ImplicationChecksByTransitivity, 10461.1ms TimeCoverageRelationStatistics Valid=14066, Invalid=23376, Unknown=0, NotChecked=0, Total=37442 [2021-05-02 18:21:10,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-05-02 18:21:10,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 200. [2021-05-02 18:21:10,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 196 states have (on average 1.0051020408163265) internal successors, (197), 196 states have internal predecessors, (197), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:10,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 200 transitions. [2021-05-02 18:21:10,619 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 200 transitions. Word has length 197 [2021-05-02 18:21:10,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:10,619 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 200 transitions. [2021-05-02 18:21:10,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 99 states, 99 states have (on average 2.0) internal successors, (198), 98 states have internal predecessors, (198), 1 states have call successors, (3), 2 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 18:21:10,619 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 200 transitions. [2021-05-02 18:21:10,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-05-02 18:21:10,620 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:10,620 INFO L523 BasicCegarLoop]: trace histogram [28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:10,832 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-05-02 18:21:10,833 INFO L428 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:10,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:10,833 INFO L82 PathProgramCache]: Analyzing trace with hash 97038803, now seen corresponding path program 28 times [2021-05-02 18:21:10,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:10,833 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298752933] [2021-05-02 18:21:10,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:10,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:14,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:14,683 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:14,683 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:14,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298752933] [2021-05-02 18:21:14,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298752933] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:14,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467796917] [2021-05-02 18:21:14,683 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 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 18:21:14,761 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:21:14,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:14,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 97 conjunts are in the unsatisfiable core [2021-05-02 18:21:14,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:14,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:14,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,109 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:15,109 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467796917] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:15,109 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:15,109 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 98] total 100 [2021-05-02 18:21:15,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949270239] [2021-05-02 18:21:15,112 INFO L460 AbstractCegarLoop]: Interpolant automaton has 100 states [2021-05-02 18:21:15,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:15,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-05-02 18:21:15,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 18:21:15,113 INFO L87 Difference]: Start difference. First operand 200 states and 200 transitions. Second operand has 100 states, 100 states have (on average 2.0) internal successors, (200), 99 states have internal predecessors, (200), 1 states have call successors, (3), 2 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 18:21:23,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:23,619 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2021-05-02 18:21:23,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-05-02 18:21:23,619 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.0) internal successors, (200), 99 states have internal predecessors, (200), 1 states have call successors, (3), 2 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 199 [2021-05-02 18:21:23,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:23,620 INFO L225 Difference]: With dead ends: 203 [2021-05-02 18:21:23,620 INFO L226 Difference]: Without dead ends: 203 [2021-05-02 18:21:23,621 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4937 ImplicationChecksByTransitivity, 10193.7ms TimeCoverageRelationStatistics Valid=14358, Invalid=23862, Unknown=0, NotChecked=0, Total=38220 [2021-05-02 18:21:23,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-05-02 18:21:23,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 202. [2021-05-02 18:21:23,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 198 states have (on average 1.005050505050505) internal successors, (199), 198 states have internal predecessors, (199), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:23,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 202 transitions. [2021-05-02 18:21:23,623 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 202 transitions. Word has length 199 [2021-05-02 18:21:23,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:23,623 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 202 transitions. [2021-05-02 18:21:23,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 100 states, 100 states have (on average 2.0) internal successors, (200), 99 states have internal predecessors, (200), 1 states have call successors, (3), 2 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 18:21:23,623 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 202 transitions. [2021-05-02 18:21:23,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-05-02 18:21:23,624 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:23,624 INFO L523 BasicCegarLoop]: trace histogram [29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:23,839 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:23,840 INFO L428 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:23,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:23,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1235917360, now seen corresponding path program 29 times [2021-05-02 18:21:23,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:23,840 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031157645] [2021-05-02 18:21:23,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:27,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:27,481 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:27,481 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:27,481 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031157645] [2021-05-02 18:21:27,481 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031157645] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:27,481 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488763720] [2021-05-02 18:21:27,481 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 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 18:21:27,567 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2021-05-02 18:21:27,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:27,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 98 conjunts are in the unsatisfiable core [2021-05-02 18:21:27,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:27,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,033 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:28,033 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488763720] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:28,033 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:28,033 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 99] total 101 [2021-05-02 18:21:28,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77648564] [2021-05-02 18:21:28,038 INFO L460 AbstractCegarLoop]: Interpolant automaton has 101 states [2021-05-02 18:21:28,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:28,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2021-05-02 18:21:28,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4952, Invalid=5148, Unknown=0, NotChecked=0, Total=10100 [2021-05-02 18:21:28,040 INFO L87 Difference]: Start difference. First operand 202 states and 202 transitions. Second operand has 101 states, 101 states have (on average 2.0) internal successors, (202), 100 states have internal predecessors, (202), 1 states have call successors, (3), 2 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 18:21:37,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:37,000 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2021-05-02 18:21:37,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-05-02 18:21:37,001 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.0) internal successors, (202), 100 states have internal predecessors, (202), 1 states have call successors, (3), 2 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 201 [2021-05-02 18:21:37,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:37,001 INFO L225 Difference]: With dead ends: 205 [2021-05-02 18:21:37,001 INFO L226 Difference]: Without dead ends: 205 [2021-05-02 18:21:37,003 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5037 ImplicationChecksByTransitivity, 10382.1ms TimeCoverageRelationStatistics Valid=14653, Invalid=24353, Unknown=0, NotChecked=0, Total=39006 [2021-05-02 18:21:37,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-05-02 18:21:37,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 204. [2021-05-02 18:21:37,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 200 states have (on average 1.005) internal successors, (201), 200 states have internal predecessors, (201), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:37,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 204 transitions. [2021-05-02 18:21:37,004 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 204 transitions. Word has length 201 [2021-05-02 18:21:37,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:37,005 INFO L480 AbstractCegarLoop]: Abstraction has 204 states and 204 transitions. [2021-05-02 18:21:37,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 101 states, 101 states have (on average 2.0) internal successors, (202), 100 states have internal predecessors, (202), 1 states have call successors, (3), 2 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 18:21:37,005 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 204 transitions. [2021-05-02 18:21:37,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-05-02 18:21:37,005 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:37,005 INFO L523 BasicCegarLoop]: trace histogram [30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:37,222 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-05-02 18:21:37,222 INFO L428 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:37,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:37,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1988431501, now seen corresponding path program 30 times [2021-05-02 18:21:37,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:37,222 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640026869] [2021-05-02 18:21:37,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:37,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:41,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:41,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:41,153 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:41,153 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:41,153 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640026869] [2021-05-02 18:21:41,154 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640026869] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:41,154 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022337245] [2021-05-02 18:21:41,154 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 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 18:21:41,260 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-05-02 18:21:41,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:41,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 99 conjunts are in the unsatisfiable core [2021-05-02 18:21:41,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:41,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,702 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:41,703 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022337245] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:41,703 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:41,703 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 100] total 102 [2021-05-02 18:21:41,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646300564] [2021-05-02 18:21:41,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 102 states [2021-05-02 18:21:41,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:41,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-05-02 18:21:41,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5052, Invalid=5250, Unknown=0, NotChecked=0, Total=10302 [2021-05-02 18:21:41,704 INFO L87 Difference]: Start difference. First operand 204 states and 204 transitions. Second operand has 102 states, 102 states have (on average 2.0) internal successors, (204), 101 states have internal predecessors, (204), 1 states have call successors, (3), 2 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 18:21:51,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:51,055 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2021-05-02 18:21:51,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-05-02 18:21:51,056 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 2.0) internal successors, (204), 101 states have internal predecessors, (204), 1 states have call successors, (3), 2 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 203 [2021-05-02 18:21:51,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:51,056 INFO L225 Difference]: With dead ends: 207 [2021-05-02 18:21:51,056 INFO L226 Difference]: Without dead ends: 207 [2021-05-02 18:21:51,058 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5138 ImplicationChecksByTransitivity, 11008.9ms TimeCoverageRelationStatistics Valid=14951, Invalid=24849, Unknown=0, NotChecked=0, Total=39800 [2021-05-02 18:21:51,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-05-02 18:21:51,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 206. [2021-05-02 18:21:51,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 202 states have (on average 1.004950495049505) internal successors, (203), 202 states have internal predecessors, (203), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:51,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 206 transitions. [2021-05-02 18:21:51,059 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 206 transitions. Word has length 203 [2021-05-02 18:21:51,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:51,060 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 206 transitions. [2021-05-02 18:21:51,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 102 states, 102 states have (on average 2.0) internal successors, (204), 101 states have internal predecessors, (204), 1 states have call successors, (3), 2 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 18:21:51,060 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 206 transitions. [2021-05-02 18:21:51,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-05-02 18:21:51,060 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:51,060 INFO L523 BasicCegarLoop]: trace histogram [31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:51,272 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:51,273 INFO L428 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:51,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:51,273 INFO L82 PathProgramCache]: Analyzing trace with hash -378700790, now seen corresponding path program 31 times [2021-05-02 18:21:51,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:51,273 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156794249] [2021-05-02 18:21:51,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:51,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:55,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:55,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:55,104 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:55,104 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:55,104 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156794249] [2021-05-02 18:21:55,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156794249] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:55,104 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913099078] [2021-05-02 18:21:55,104 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 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 18:21:55,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:55,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 100 conjunts are in the unsatisfiable core [2021-05-02 18:21:55,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:55,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,878 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:55,878 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913099078] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:55,878 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:55,878 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 101] total 103 [2021-05-02 18:21:55,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762684754] [2021-05-02 18:21:55,879 INFO L460 AbstractCegarLoop]: Interpolant automaton has 103 states [2021-05-02 18:21:55,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:55,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-05-02 18:21:55,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2021-05-02 18:21:55,880 INFO L87 Difference]: Start difference. First operand 206 states and 206 transitions. Second operand has 103 states, 103 states have (on average 2.0) internal successors, (206), 102 states have internal predecessors, (206), 1 states have call successors, (3), 2 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 18:22:05,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:05,742 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2021-05-02 18:22:05,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-05-02 18:22:05,744 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.0) internal successors, (206), 102 states have internal predecessors, (206), 1 states have call successors, (3), 2 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 205 [2021-05-02 18:22:05,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:05,745 INFO L225 Difference]: With dead ends: 209 [2021-05-02 18:22:05,745 INFO L226 Difference]: Without dead ends: 209 [2021-05-02 18:22:05,747 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5240 ImplicationChecksByTransitivity, 11312.3ms TimeCoverageRelationStatistics Valid=15252, Invalid=25350, Unknown=0, NotChecked=0, Total=40602 [2021-05-02 18:22:05,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-05-02 18:22:05,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 208. [2021-05-02 18:22:05,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 204 states have (on average 1.0049019607843137) internal successors, (205), 204 states have internal predecessors, (205), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:05,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 208 transitions. [2021-05-02 18:22:05,748 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 208 transitions. Word has length 205 [2021-05-02 18:22:05,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:05,748 INFO L480 AbstractCegarLoop]: Abstraction has 208 states and 208 transitions. [2021-05-02 18:22:05,749 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 103 states, 103 states have (on average 2.0) internal successors, (206), 102 states have internal predecessors, (206), 1 states have call successors, (3), 2 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 18:22:05,749 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 208 transitions. [2021-05-02 18:22:05,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-05-02 18:22:05,749 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:05,749 INFO L523 BasicCegarLoop]: trace histogram [32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:05,956 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-05-02 18:22:05,957 INFO L428 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:05,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:05,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1139834439, now seen corresponding path program 32 times [2021-05-02 18:22:05,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:05,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036550722] [2021-05-02 18:22:05,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:05,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:10,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:10,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:10,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 1024 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:10,297 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:10,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036550722] [2021-05-02 18:22:10,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036550722] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:10,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912375756] [2021-05-02 18:22:10,297 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 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 18:22:10,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:22:10,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:22:10,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 101 conjunts are in the unsatisfiable core [2021-05-02 18:22:10,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:10,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 1024 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:10,890 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912375756] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:10,890 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:10,890 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 102] total 104 [2021-05-02 18:22:10,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529088729] [2021-05-02 18:22:10,890 INFO L460 AbstractCegarLoop]: Interpolant automaton has 104 states [2021-05-02 18:22:10,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:10,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-05-02 18:22:10,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=5457, Unknown=0, NotChecked=0, Total=10712 [2021-05-02 18:22:10,891 INFO L87 Difference]: Start difference. First operand 208 states and 208 transitions. Second operand has 104 states, 104 states have (on average 2.0) internal successors, (208), 103 states have internal predecessors, (208), 1 states have call successors, (3), 2 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 18:22:19,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:19,724 INFO L93 Difference]: Finished difference Result 210 states and 210 transitions. [2021-05-02 18:22:19,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-05-02 18:22:19,725 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 2.0) internal successors, (208), 103 states have internal predecessors, (208), 1 states have call successors, (3), 2 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 207 [2021-05-02 18:22:19,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:19,725 INFO L225 Difference]: With dead ends: 210 [2021-05-02 18:22:19,725 INFO L226 Difference]: Without dead ends: 210 [2021-05-02 18:22:19,727 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5343 ImplicationChecksByTransitivity, 11163.9ms TimeCoverageRelationStatistics Valid=15556, Invalid=25856, Unknown=0, NotChecked=0, Total=41412 [2021-05-02 18:22:19,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-05-02 18:22:19,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2021-05-02 18:22:19,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 206 states have (on average 1.0048543689320388) internal successors, (207), 206 states have internal predecessors, (207), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:19,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 210 transitions. [2021-05-02 18:22:19,729 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 210 transitions. Word has length 207 [2021-05-02 18:22:19,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:19,729 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 210 transitions. [2021-05-02 18:22:19,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 104 states, 104 states have (on average 2.0) internal successors, (208), 103 states have internal predecessors, (208), 1 states have call successors, (3), 2 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 18:22:19,729 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 210 transitions. [2021-05-02 18:22:19,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-05-02 18:22:19,729 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:19,730 INFO L523 BasicCegarLoop]: trace histogram [33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:19,936 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-05-02 18:22:19,937 INFO L428 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:19,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:19,937 INFO L82 PathProgramCache]: Analyzing trace with hash 163308868, now seen corresponding path program 33 times [2021-05-02 18:22:19,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:19,937 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631387143] [2021-05-02 18:22:19,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:19,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:21,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:21,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:21,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:21,486 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:21,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631387143] [2021-05-02 18:22:21,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631387143] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:21,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606760438] [2021-05-02 18:22:21,486 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 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 18:22:21,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-05-02 18:22:21,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:22:21,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 110 conjunts are in the unsatisfiable core [2021-05-02 18:22:21,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:21,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:21,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:22,192 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606760438] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:22,192 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:22,192 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54] total 56 [2021-05-02 18:22:22,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315598399] [2021-05-02 18:22:22,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2021-05-02 18:22:22,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:22,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-05-02 18:22:22,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=2970, Unknown=0, NotChecked=0, Total=3080 [2021-05-02 18:22:22,194 INFO L87 Difference]: Start difference. First operand 210 states and 210 transitions. Second operand has 56 states, 56 states have (on average 3.732142857142857) internal successors, (209), 55 states have internal predecessors, (209), 1 states have call successors, (3), 2 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 18:22:29,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:29,664 INFO L93 Difference]: Finished difference Result 214 states and 214 transitions. [2021-05-02 18:22:29,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-02 18:22:29,665 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 3.732142857142857) internal successors, (209), 55 states have internal predecessors, (209), 1 states have call successors, (3), 2 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 209 [2021-05-02 18:22:29,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:29,665 INFO L225 Difference]: With dead ends: 214 [2021-05-02 18:22:29,665 INFO L226 Difference]: Without dead ends: 213 [2021-05-02 18:22:29,666 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 208 SyntacticMatches, 2 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1376 ImplicationChecksByTransitivity, 4221.4ms TimeCoverageRelationStatistics Valid=321, Invalid=11235, Unknown=0, NotChecked=0, Total=11556 [2021-05-02 18:22:29,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-05-02 18:22:29,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 212. [2021-05-02 18:22:29,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 208 states have (on average 1.0048076923076923) internal successors, (209), 208 states have internal predecessors, (209), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:29,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 212 transitions. [2021-05-02 18:22:29,668 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 212 transitions. Word has length 209 [2021-05-02 18:22:29,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:29,668 INFO L480 AbstractCegarLoop]: Abstraction has 212 states and 212 transitions. [2021-05-02 18:22:29,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 56 states, 56 states have (on average 3.732142857142857) internal successors, (209), 55 states have internal predecessors, (209), 1 states have call successors, (3), 2 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 18:22:29,668 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 212 transitions. [2021-05-02 18:22:29,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-05-02 18:22:29,669 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:29,669 INFO L523 BasicCegarLoop]: trace histogram [34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:29,869 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:29,870 INFO L428 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:29,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:29,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1974894335, now seen corresponding path program 34 times [2021-05-02 18:22:29,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:29,870 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532992141] [2021-05-02 18:22:29,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:31,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:31,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:31,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 1156 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:31,118 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:31,118 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532992141] [2021-05-02 18:22:31,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532992141] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:22:31,118 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:22:31,118 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2021-05-02 18:22:31,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108204097] [2021-05-02 18:22:31,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states [2021-05-02 18:22:31,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:31,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-05-02 18:22:31,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2021-05-02 18:22:31,119 INFO L87 Difference]: Start difference. First operand 212 states and 212 transitions. Second operand has 53 states, 53 states have (on average 3.9245283018867925) internal successors, (208), 52 states have internal predecessors, (208), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:32,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:32,930 INFO L93 Difference]: Finished difference Result 207 states and 206 transitions. [2021-05-02 18:22:32,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-02 18:22:32,930 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 3.9245283018867925) internal successors, (208), 52 states have internal predecessors, (208), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 211 [2021-05-02 18:22:32,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:32,930 INFO L225 Difference]: With dead ends: 207 [2021-05-02 18:22:32,930 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 18:22:32,931 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 2698.3ms TimeCoverageRelationStatistics Valid=3978, Invalid=6528, Unknown=0, NotChecked=0, Total=10506 [2021-05-02 18:22:32,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 18:22:32,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 18:22:32,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-02 18:22:32,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 18:22:32,931 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 211 [2021-05-02 18:22:32,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:32,931 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 18:22:32,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 53 states, 53 states have (on average 3.9245283018867925) internal successors, (208), 52 states have internal predecessors, (208), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:32,931 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 18:22:32,931 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 18:22:32,932 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-05-02 18:22:32,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:22:32 BasicIcfg [2021-05-02 18:22:32,935 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 18:22:32,935 INFO L168 Benchmark]: Toolchain (without parser) took 413830.30 ms. Allocated memory was 209.7 MB in the beginning and 647.0 MB in the end (delta: 437.3 MB). Free memory was 174.7 MB in the beginning and 526.2 MB in the end (delta: -351.5 MB). Peak memory consumption was 87.1 MB. Max. memory is 8.0 GB. [2021-05-02 18:22:32,935 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 209.7 MB. Free memory is still 191.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 18:22:32,935 INFO L168 Benchmark]: CACSL2BoogieTranslator took 446.74 ms. Allocated memory is still 209.7 MB. Free memory was 174.5 MB in the beginning and 184.9 MB in the end (delta: -10.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 8.0 GB. [2021-05-02 18:22:32,935 INFO L168 Benchmark]: Boogie Preprocessor took 61.71 ms. Allocated memory is still 209.7 MB. Free memory was 184.9 MB in the beginning and 182.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 18:22:32,935 INFO L168 Benchmark]: RCFGBuilder took 728.06 ms. Allocated memory is still 209.7 MB. Free memory was 182.0 MB in the beginning and 170.6 MB in the end (delta: 11.4 MB). Peak memory consumption was 47.9 MB. Max. memory is 8.0 GB. [2021-05-02 18:22:32,935 INFO L168 Benchmark]: IcfgTransformer took 25.04 ms. Allocated memory is still 209.7 MB. Free memory was 170.6 MB in the beginning and 166.9 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-05-02 18:22:32,935 INFO L168 Benchmark]: TraceAbstraction took 412561.29 ms. Allocated memory was 209.7 MB in the beginning and 647.0 MB in the end (delta: 437.3 MB). Free memory was 166.4 MB in the beginning and 526.2 MB in the end (delta: -359.8 MB). Peak memory consumption was 77.5 MB. Max. memory is 8.0 GB. [2021-05-02 18:22:32,936 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 209.7 MB. Free memory is still 191.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 446.74 ms. Allocated memory is still 209.7 MB. Free memory was 174.5 MB in the beginning and 184.9 MB in the end (delta: -10.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 61.71 ms. Allocated memory is still 209.7 MB. Free memory was 184.9 MB in the beginning and 182.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 728.06 ms. Allocated memory is still 209.7 MB. Free memory was 182.0 MB in the beginning and 170.6 MB in the end (delta: 11.4 MB). Peak memory consumption was 47.9 MB. Max. memory is 8.0 GB. * IcfgTransformer took 25.04 ms. Allocated memory is still 209.7 MB. Free memory was 170.6 MB in the beginning and 166.9 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 412561.29 ms. Allocated memory was 209.7 MB in the beginning and 647.0 MB in the end (delta: 437.3 MB). Free memory was 166.4 MB in the beginning and 526.2 MB in the end (delta: -359.8 MB). Peak memory consumption was 77.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 444]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 149 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 412517.7ms, OverallIterations: 52, TraceHistogramMax: 34, EmptinessCheckTime: 58.1ms, AutomataDifference: 286134.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 668 SDtfs, 31885 SDslu, 8627 SDs, 0 SdLazy, 174447 SolverSat, 49689 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 73101.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12274 GetRequests, 6065 SyntacticMatches, 2 SemanticMatches, 6207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131965 ImplicationChecksByTransitivity, 283207.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=416occurred in iteration=16, InterpolantAutomatonStates: 3217, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 247.6ms AutomataMinimizationTime, 52 MinimizatonAttempts, 15281 StatesRemovedByMinimization, 49 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 520.8ms SsaConstructionTime, 2851.6ms SatisfiabilityAnalysisTime, 114751.7ms InterpolantComputationTime, 14467 NumberOfCodeBlocks, 14467 NumberOfCodeBlocksAsserted, 379 NumberOfCheckSat, 14382 ConstructedInterpolants, 0 QuantifiedInterpolants, 41359 SizeOfPredicates, 5 NumberOfNonLiveVariables, 16599 ConjunctsInSsa, 2846 ConjunctsInUnsatCore, 85 InterpolantComputations, 19 PerfectInterpolantSequences, 1156/26214 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...