/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/nla-digbench-scaling/prod4br-ll_unwindbound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 21:41:27,035 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 21:41:27,037 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 21:41:27,068 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 21:41:27,068 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 21:41:27,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 21:41:27,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 21:41:27,076 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 21:41:27,078 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 21:41:27,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 21:41:27,082 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 21:41:27,083 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 21:41:27,083 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 21:41:27,084 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 21:41:27,085 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 21:41:27,086 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 21:41:27,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 21:41:27,088 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 21:41:27,090 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 21:41:27,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 21:41:27,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 21:41:27,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 21:41:27,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 21:41:27,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 21:41:27,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-02 21:41:27,111 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-02 21:41:27,111 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-02 21:41:27,113 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-02 21:41:27,113 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-02 21:41:27,113 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-02 21:41:27,114 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-02 21:41:27,114 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-02 21:41:27,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-02 21:41:27,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-02 21:41:27,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-02 21:41:27,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-02 21:41:27,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-02 21:41:27,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-02 21:41:27,117 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 21:41:27,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 21:41:27,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 21:41:27,121 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 21:41:27,133 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 21:41:27,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 21:41:27,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 21:41:27,135 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 21:41:27,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 21:41:27,136 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 21:41:27,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 21:41:27,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 21:41:27,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 21:41:27,136 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 21:41:27,137 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 21:41:27,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 21:41:27,137 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 21:41:27,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 21:41:27,137 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 21:41:27,137 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 21:41:27,137 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 21:41:27,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 21:41:27,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 21:41:27,138 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 21:41:27,138 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 21:41:27,139 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 21:41:27,139 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 21:41:27,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 21:41:27,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 21:41:27,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 21:41:27,415 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 21:41:27,416 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 21:41:27,417 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_unwindbound100.c [2021-05-02 21:41:27,470 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b516a4af2/383e7bee842e4da6b7c1a50f9b10b161/FLAG40b7256c0 [2021-05-02 21:41:27,797 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 21:41:27,801 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_unwindbound100.c [2021-05-02 21:41:27,805 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b516a4af2/383e7bee842e4da6b7c1a50f9b10b161/FLAG40b7256c0 [2021-05-02 21:41:28,217 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b516a4af2/383e7bee842e4da6b7c1a50f9b10b161 [2021-05-02 21:41:28,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 21:41:28,221 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 21:41:28,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 21:41:28,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 21:41:28,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 21:41:28,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 09:41:28" (1/1) ... [2021-05-02 21:41:28,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@396e89a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:41:28, skipping insertion in model container [2021-05-02 21:41:28,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 09:41:28" (1/1) ... [2021-05-02 21:41:28,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 21:41:28,248 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 21:41:28,385 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_unwindbound100.c[524,537] [2021-05-02 21:41:28,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 21:41:28,416 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 21:41:28,423 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_unwindbound100.c[524,537] [2021-05-02 21:41:28,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 21:41:28,449 INFO L208 MainTranslator]: Completed translation [2021-05-02 21:41:28,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:41:28 WrapperNode [2021-05-02 21:41:28,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 21:41:28,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 21:41:28,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 21:41:28,450 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 21:41:28,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:41:28" (1/1) ... [2021-05-02 21:41:28,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:41:28" (1/1) ... [2021-05-02 21:41:28,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:41:28" (1/1) ... [2021-05-02 21:41:28,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:41:28" (1/1) ... [2021-05-02 21:41:28,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:41:28" (1/1) ... [2021-05-02 21:41:28,524 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:41:28" (1/1) ... [2021-05-02 21:41:28,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:41:28" (1/1) ... [2021-05-02 21:41:28,526 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 21:41:28,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 21:41:28,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 21:41:28,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 21:41:28,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:41:28" (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 21:41:28,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 21:41:28,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 21:41:28,670 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 21:41:28,670 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 21:41:28,670 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 21:41:28,671 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 21:41:28,671 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 21:41:28,671 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 21:41:28,671 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 21:41:28,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 21:41:28,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 21:41:28,672 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 21:41:28,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 21:41:28,672 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 21:41:28,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 21:41:28,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 21:41:28,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 21:41:28,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 21:41:28,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 21:41:28,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 21:41:28,955 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 21:41:28,956 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 21:41:28,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 09:41:28 BoogieIcfgContainer [2021-05-02 21:41:28,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 21:41:28,957 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 21:41:28,957 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 21:41:28,958 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 21:41:28,959 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 09:41:28" (1/1) ... [2021-05-02 21:41:28,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 09:41:28 BasicIcfg [2021-05-02 21:41:28,987 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 21:41:28,987 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 21:41:28,987 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 21:41:28,989 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 21:41:28,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 09:41:28" (1/4) ... [2021-05-02 21:41:28,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4394c7f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 09:41:28, skipping insertion in model container [2021-05-02 21:41:28,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:41:28" (2/4) ... [2021-05-02 21:41:28,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4394c7f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 09:41:28, skipping insertion in model container [2021-05-02 21:41:28,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 09:41:28" (3/4) ... [2021-05-02 21:41:28,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4394c7f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 09:41:28, skipping insertion in model container [2021-05-02 21:41:28,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 09:41:28" (4/4) ... [2021-05-02 21:41:28,991 INFO L111 eAbstractionObserver]: Analyzing ICFG prod4br-ll_unwindbound100.cJordan [2021-05-02 21:41:28,994 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 21:41:28,996 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 21:41:29,023 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 21:41:29,051 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 21:41:29,051 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 21:41:29,051 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 21:41:29,051 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 21:41:29,051 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 21:41:29,051 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 21:41:29,051 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 21:41:29,051 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 21:41:29,073 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 21:41:29,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-02 21:41:29,078 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:41:29,078 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:41:29,078 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:41:29,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:41:29,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1119019339, now seen corresponding path program 1 times [2021-05-02 21:41:29,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:41:29,086 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193657784] [2021-05-02 21:41:29,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:41:29,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:41:29,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 21:41:29,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:41:29,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 21:41:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:41:29,334 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 21:41:29,334 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:41:29,334 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193657784] [2021-05-02 21:41:29,335 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193657784] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 21:41:29,335 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 21:41:29,335 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 21:41:29,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756554379] [2021-05-02 21:41:29,353 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 21:41:29,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:41:29,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 21:41:29,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 21:41:29,362 INFO L87 Difference]: Start difference. First operand has 32 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 21:41:29,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:41:29,440 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2021-05-02 21:41:29,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 21:41:29,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-05-02 21:41:29,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:41:29,446 INFO L225 Difference]: With dead ends: 33 [2021-05-02 21:41:29,446 INFO L226 Difference]: Without dead ends: 28 [2021-05-02 21:41:29,447 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 21:41:29,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-05-02 21:41:29,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2021-05-02 21:41:29,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 21:41:29,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2021-05-02 21:41:29,468 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 17 [2021-05-02 21:41:29,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:41:29,469 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2021-05-02 21:41:29,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 21:41:29,469 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2021-05-02 21:41:29,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-02 21:41:29,469 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:41:29,469 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:41:29,470 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 21:41:29,470 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:41:29,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:41:29,470 INFO L82 PathProgramCache]: Analyzing trace with hash -496973861, now seen corresponding path program 1 times [2021-05-02 21:41:29,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:41:29,471 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286628214] [2021-05-02 21:41:29,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:41:29,520 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:41:29,520 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1838358814] [2021-05-02 21:41:29,520 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 21:41:29,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:41:29,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 21:41:29,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:41:29,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:29,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:29,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:29,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:29,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:29,670 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 21:41:29,670 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:41:29,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286628214] [2021-05-02 21:41:29,671 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:41:29,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838358814] [2021-05-02 21:41:29,671 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838358814] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 21:41:29,671 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 21:41:29,671 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 21:41:29,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943338545] [2021-05-02 21:41:29,672 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 21:41:29,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:41:29,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 21:41:29,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 21:41:29,674 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 21:41:29,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:41:29,683 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2021-05-02 21:41:29,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 21:41:29,683 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2021-05-02 21:41:29,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:41:29,684 INFO L225 Difference]: With dead ends: 29 [2021-05-02 21:41:29,684 INFO L226 Difference]: Without dead ends: 29 [2021-05-02 21:41:29,685 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.6ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 21:41:29,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-02 21:41:29,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-05-02 21:41:29,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 21:41:29,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2021-05-02 21:41:29,689 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 18 [2021-05-02 21:41:29,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:41:29,689 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-05-02 21:41:29,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 21:41:29,690 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2021-05-02 21:41:29,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-02 21:41:29,690 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:41:29,690 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:41:29,893 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 21:41:29,893 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:41:29,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:41:29,893 INFO L82 PathProgramCache]: Analyzing trace with hash -495871594, now seen corresponding path program 1 times [2021-05-02 21:41:29,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:41:29,894 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359406134] [2021-05-02 21:41:29,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:41:29,905 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:41:29,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1174830120] [2021-05-02 21:41:29,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:41:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:41:30,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 21:41:30,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:41:30,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:30,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:30,080 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 21:41:30,081 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:41:30,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359406134] [2021-05-02 21:41:30,081 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:41:30,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174830120] [2021-05-02 21:41:30,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174830120] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 21:41:30,081 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 21:41:30,081 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-02 21:41:30,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323636721] [2021-05-02 21:41:30,082 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 21:41:30,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:41:30,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 21:41:30,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-02 21:41:30,083 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 21:41:30,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:41:30,184 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2021-05-02 21:41:30,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 21:41:30,184 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-05-02 21:41:30,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:41:30,187 INFO L225 Difference]: With dead ends: 40 [2021-05-02 21:41:30,187 INFO L226 Difference]: Without dead ends: 40 [2021-05-02 21:41:30,188 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 44.6ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-02 21:41:30,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-05-02 21:41:30,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2021-05-02 21:41:30,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 24 states have internal predecessors, (28), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 21:41:30,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2021-05-02 21:41:30,198 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 18 [2021-05-02 21:41:30,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:41:30,198 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2021-05-02 21:41:30,198 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 21:41:30,198 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2021-05-02 21:41:30,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-05-02 21:41:30,199 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:41:30,199 INFO L523 BasicCegarLoop]: trace histogram [2, 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 21:41:30,416 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:41:30,416 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:41:30,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:41:30,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1025358414, now seen corresponding path program 1 times [2021-05-02 21:41:30,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:41:30,417 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573135895] [2021-05-02 21:41:30,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:41:30,425 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:41:30,425 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2137109523] [2021-05-02 21:41:30,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 21:41:30,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:41:30,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 21:41:30,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:41:30,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:30,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:30,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:30,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:30,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:30,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:30,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:30,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:30,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:30,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:30,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:30,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:30,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:30,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 21:41:30,720 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:41:30,720 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573135895] [2021-05-02 21:41:30,720 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:41:30,720 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137109523] [2021-05-02 21:41:30,720 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137109523] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:41:30,720 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:41:30,720 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-05-02 21:41:30,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207946823] [2021-05-02 21:41:30,721 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 21:41:30,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:41:30,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 21:41:30,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-05-02 21:41:30,722 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 9 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:41:31,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:41:31,044 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2021-05-02 21:41:31,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-02 21:41:31,045 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 9 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2021-05-02 21:41:31,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:41:31,046 INFO L225 Difference]: With dead ends: 49 [2021-05-02 21:41:31,046 INFO L226 Difference]: Without dead ends: 43 [2021-05-02 21:41:31,047 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 214.3ms TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2021-05-02 21:41:31,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-05-02 21:41:31,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2021-05-02 21:41:31,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 29 states have internal predecessors, (36), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 21:41:31,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2021-05-02 21:41:31,052 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 24 [2021-05-02 21:41:31,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:41:31,052 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2021-05-02 21:41:31,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 9 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:41:31,052 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2021-05-02 21:41:31,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-02 21:41:31,053 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:41:31,053 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] [2021-05-02 21:41:31,268 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:41:31,269 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:41:31,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:41:31,269 INFO L82 PathProgramCache]: Analyzing trace with hash -2117889998, now seen corresponding path program 1 times [2021-05-02 21:41:31,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:41:31,270 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441004229] [2021-05-02 21:41:31,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:41:31,278 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:41:31,278 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2096306691] [2021-05-02 21:41:31,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 21:41:31,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:41:31,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 21:41:31,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:41:31,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:31,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:31,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:31,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:31,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:31,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:31,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:31,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:31,384 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 21:41:31,384 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:41:31,384 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441004229] [2021-05-02 21:41:31,384 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:41:31,384 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096306691] [2021-05-02 21:41:31,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096306691] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:41:31,385 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:41:31,385 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-05-02 21:41:31,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799439904] [2021-05-02 21:41:31,385 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 21:41:31,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:41:31,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 21:41:31,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-02 21:41:31,386 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 21:41:31,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:41:31,411 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2021-05-02 21:41:31,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 21:41:31,411 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 27 [2021-05-02 21:41:31,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:41:31,412 INFO L225 Difference]: With dead ends: 48 [2021-05-02 21:41:31,412 INFO L226 Difference]: Without dead ends: 48 [2021-05-02 21:41:31,412 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 12.5ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 21:41:31,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-05-02 21:41:31,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-05-02 21:41:31,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 36 states have internal predecessors, (47), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 21:41:31,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 61 transitions. [2021-05-02 21:41:31,415 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 61 transitions. Word has length 27 [2021-05-02 21:41:31,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:41:31,416 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 61 transitions. [2021-05-02 21:41:31,416 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 21:41:31,416 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 61 transitions. [2021-05-02 21:41:31,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-02 21:41:31,416 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:41:31,416 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:41:31,617 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:41:31,617 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:41:31,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:41:31,617 INFO L82 PathProgramCache]: Analyzing trace with hash -2116787731, now seen corresponding path program 1 times [2021-05-02 21:41:31,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:41:31,618 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400865633] [2021-05-02 21:41:31,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:41:31,626 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:41:31,626 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [304786672] [2021-05-02 21:41:31,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 21:41:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:41:31,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-02 21:41:31,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:41:31,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:31,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:31,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:31,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:31,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:31,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:31,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:31,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:31,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:31,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:31,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:31,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:31,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:31,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:31,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:31,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:31,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:31,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:31,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:31,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:31,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:31,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:32,012 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 21:41:32,012 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:41:32,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400865633] [2021-05-02 21:41:32,013 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:41:32,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304786672] [2021-05-02 21:41:32,013 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304786672] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:41:32,013 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:41:32,013 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-02 21:41:32,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524164443] [2021-05-02 21:41:32,013 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 21:41:32,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:41:32,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 21:41:32,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-05-02 21:41:32,014 INFO L87 Difference]: Start difference. First operand 48 states and 61 transitions. Second operand has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:41:36,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:41:36,455 INFO L93 Difference]: Finished difference Result 61 states and 79 transitions. [2021-05-02 21:41:36,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 21:41:36,456 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2021-05-02 21:41:36,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:41:36,457 INFO L225 Difference]: With dead ends: 61 [2021-05-02 21:41:36,457 INFO L226 Difference]: Without dead ends: 61 [2021-05-02 21:41:36,457 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 83.2ms TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-05-02 21:41:36,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-05-02 21:41:36,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2021-05-02 21:41:36,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 40 states have (on average 1.3) internal successors, (52), 42 states have internal predecessors, (52), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 21:41:36,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2021-05-02 21:41:36,461 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 27 [2021-05-02 21:41:36,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:41:36,461 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2021-05-02 21:41:36,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:41:36,461 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2021-05-02 21:41:36,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-02 21:41:36,461 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:41:36,462 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:41:36,677 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:41:36,677 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:41:36,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:41:36,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1857795251, now seen corresponding path program 1 times [2021-05-02 21:41:36,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:41:36,678 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339326127] [2021-05-02 21:41:36,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:41:36,685 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:41:36,685 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [615100177] [2021-05-02 21:41:36,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 21:41:36,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:41:36,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-02 21:41:36,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:41:36,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:36,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:36,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:36,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:36,886 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 21:41:36,886 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:41:36,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339326127] [2021-05-02 21:41:36,886 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:41:36,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615100177] [2021-05-02 21:41:36,886 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615100177] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:41:36,886 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:41:36,886 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-02 21:41:36,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311740199] [2021-05-02 21:41:36,887 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 21:41:36,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:41:36,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 21:41:36,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-05-02 21:41:36,887 INFO L87 Difference]: Start difference. First operand 55 states and 68 transitions. Second operand has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:41:41,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:41:41,324 INFO L93 Difference]: Finished difference Result 64 states and 79 transitions. [2021-05-02 21:41:41,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 21:41:41,325 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2021-05-02 21:41:41,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:41:41,325 INFO L225 Difference]: With dead ends: 64 [2021-05-02 21:41:41,325 INFO L226 Difference]: Without dead ends: 64 [2021-05-02 21:41:41,326 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 106.5ms TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-05-02 21:41:41,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-05-02 21:41:41,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-05-02 21:41:41,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 47 states have (on average 1.297872340425532) internal successors, (61), 49 states have internal predecessors, (61), 10 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 21:41:41,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 79 transitions. [2021-05-02 21:41:41,329 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 79 transitions. Word has length 28 [2021-05-02 21:41:41,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:41:41,330 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 79 transitions. [2021-05-02 21:41:41,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:41:41,330 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 79 transitions. [2021-05-02 21:41:41,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 21:41:41,330 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:41:41,330 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:41:41,540 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:41:41,541 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:41:41,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:41:41,541 INFO L82 PathProgramCache]: Analyzing trace with hash -2004143825, now seen corresponding path program 1 times [2021-05-02 21:41:41,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:41:41,541 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866976197] [2021-05-02 21:41:41,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:41:41,551 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:41:41,551 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [376811556] [2021-05-02 21:41:41,551 INFO L95 rtionOrderModulation]: Keeping assertion order 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 21:41:41,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:41:41,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-02 21:41:41,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:41:41,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:41,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:41,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:41,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:41,733 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 21:41:41,733 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:41:41,733 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866976197] [2021-05-02 21:41:41,733 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:41:41,734 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376811556] [2021-05-02 21:41:41,734 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376811556] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:41:41,734 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:41:41,734 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-02 21:41:41,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004885063] [2021-05-02 21:41:41,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 21:41:41,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:41:41,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 21:41:41,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-05-02 21:41:41,735 INFO L87 Difference]: Start difference. First operand 64 states and 79 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:41:46,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:41:46,176 INFO L93 Difference]: Finished difference Result 77 states and 96 transitions. [2021-05-02 21:41:46,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 21:41:46,176 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2021-05-02 21:41:46,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:41:46,177 INFO L225 Difference]: With dead ends: 77 [2021-05-02 21:41:46,177 INFO L226 Difference]: Without dead ends: 77 [2021-05-02 21:41:46,177 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 90.4ms TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-05-02 21:41:46,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-05-02 21:41:46,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 74. [2021-05-02 21:41:46,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 55 states have (on average 1.290909090909091) internal successors, (71), 57 states have internal predecessors, (71), 11 states have call successors, (11), 8 states have call predecessors, (11), 7 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-02 21:41:46,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 91 transitions. [2021-05-02 21:41:46,182 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 91 transitions. Word has length 29 [2021-05-02 21:41:46,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:41:46,182 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 91 transitions. [2021-05-02 21:41:46,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:41:46,182 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 91 transitions. [2021-05-02 21:41:46,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 21:41:46,183 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:41:46,183 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:41:46,389 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:41:46,390 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:41:46,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:41:46,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1116640144, now seen corresponding path program 1 times [2021-05-02 21:41:46,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:41:46,390 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576884942] [2021-05-02 21:41:46,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:41:46,397 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:41:46,397 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1279752859] [2021-05-02 21:41:46,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:41:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:41:46,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 29 conjunts are in the unsatisfiable core [2021-05-02 21:41:46,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:41:46,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:46,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:46,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:46,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:46,562 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 21:41:46,562 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:41:46,562 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576884942] [2021-05-02 21:41:46,562 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:41:46,564 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279752859] [2021-05-02 21:41:46,564 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279752859] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:41:46,564 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:41:46,564 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-02 21:41:46,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516359558] [2021-05-02 21:41:46,565 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 21:41:46,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:41:46,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 21:41:46,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-05-02 21:41:46,565 INFO L87 Difference]: Start difference. First operand 74 states and 91 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:41:46,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:41:46,703 INFO L93 Difference]: Finished difference Result 85 states and 107 transitions. [2021-05-02 21:41:46,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 21:41:46,704 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2021-05-02 21:41:46,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:41:46,705 INFO L225 Difference]: With dead ends: 85 [2021-05-02 21:41:46,705 INFO L226 Difference]: Without dead ends: 85 [2021-05-02 21:41:46,705 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 58.8ms TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-05-02 21:41:46,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-05-02 21:41:46,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 72. [2021-05-02 21:41:46,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 53 states have (on average 1.3018867924528301) internal successors, (69), 55 states have internal predecessors, (69), 11 states have call successors, (11), 8 states have call predecessors, (11), 7 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-02 21:41:46,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 89 transitions. [2021-05-02 21:41:46,709 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 89 transitions. Word has length 29 [2021-05-02 21:41:46,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:41:46,709 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 89 transitions. [2021-05-02 21:41:46,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:41:46,709 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 89 transitions. [2021-05-02 21:41:46,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-02 21:41:46,710 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:41:46,710 INFO L523 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:41:46,918 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-05-02 21:41:46,919 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:41:46,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:41:46,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1454559031, now seen corresponding path program 1 times [2021-05-02 21:41:46,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:41:46,919 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908841226] [2021-05-02 21:41:46,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:41:46,925 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:41:46,925 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [522321805] [2021-05-02 21:41:46,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 21:41:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:41:46,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-02 21:41:46,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:41:47,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:47,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:47,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:47,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:47,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:47,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:47,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:47,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:47,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:47,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:47,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:47,076 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:41:47,076 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:41:47,076 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908841226] [2021-05-02 21:41:47,076 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:41:47,076 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522321805] [2021-05-02 21:41:47,076 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522321805] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 21:41:47,077 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 21:41:47,077 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-02 21:41:47,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385696746] [2021-05-02 21:41:47,077 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 21:41:47,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:41:47,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 21:41:47,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-02 21:41:47,078 INFO L87 Difference]: Start difference. First operand 72 states and 89 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 21:41:47,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:41:47,155 INFO L93 Difference]: Finished difference Result 90 states and 118 transitions. [2021-05-02 21:41:47,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 21:41:47,155 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 33 [2021-05-02 21:41:47,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:41:47,156 INFO L225 Difference]: With dead ends: 90 [2021-05-02 21:41:47,156 INFO L226 Difference]: Without dead ends: 90 [2021-05-02 21:41:47,157 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 44.9ms TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-05-02 21:41:47,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-05-02 21:41:47,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 85. [2021-05-02 21:41:47,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 63 states have (on average 1.3333333333333333) internal successors, (84), 66 states have internal predecessors, (84), 14 states have call successors, (14), 8 states have call predecessors, (14), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-02 21:41:47,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 110 transitions. [2021-05-02 21:41:47,167 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 110 transitions. Word has length 33 [2021-05-02 21:41:47,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:41:47,167 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 110 transitions. [2021-05-02 21:41:47,167 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 21:41:47,167 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 110 transitions. [2021-05-02 21:41:47,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-02 21:41:47,168 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:41:47,168 INFO L523 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:41:47,368 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:41:47,368 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:41:47,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:41:47,369 INFO L82 PathProgramCache]: Analyzing trace with hash 482870923, now seen corresponding path program 1 times [2021-05-02 21:41:47,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:41:47,369 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477994484] [2021-05-02 21:41:47,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:41:47,376 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:41:47,376 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [896240025] [2021-05-02 21:41:47,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 21:41:47,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:41:47,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-02 21:41:47,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:41:47,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:47,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:47,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:47,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:47,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:47,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:47,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:47,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:47,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:47,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:47,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:47,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:47,646 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 21:41:47,647 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:41:47,647 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477994484] [2021-05-02 21:41:47,647 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:41:47,647 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896240025] [2021-05-02 21:41:47,647 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896240025] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:41:47,647 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:41:47,647 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-05-02 21:41:47,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793962683] [2021-05-02 21:41:47,647 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 21:41:47,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:41:47,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 21:41:47,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-05-02 21:41:47,648 INFO L87 Difference]: Start difference. First operand 85 states and 110 transitions. Second operand has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 21:41:49,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:41:49,938 INFO L93 Difference]: Finished difference Result 101 states and 135 transitions. [2021-05-02 21:41:49,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 21:41:49,939 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 35 [2021-05-02 21:41:49,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:41:49,941 INFO L225 Difference]: With dead ends: 101 [2021-05-02 21:41:49,941 INFO L226 Difference]: Without dead ends: 101 [2021-05-02 21:41:49,941 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 194.5ms TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-05-02 21:41:49,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-05-02 21:41:49,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 94. [2021-05-02 21:41:49,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 69 states have (on average 1.3333333333333333) internal successors, (92), 73 states have internal predecessors, (92), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2021-05-02 21:41:49,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 122 transitions. [2021-05-02 21:41:49,962 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 122 transitions. Word has length 35 [2021-05-02 21:41:49,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:41:49,962 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 122 transitions. [2021-05-02 21:41:49,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 21:41:49,962 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 122 transitions. [2021-05-02 21:41:49,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-02 21:41:49,963 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:41:49,963 INFO L523 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:41:50,168 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-05-02 21:41:50,169 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:41:50,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:41:50,169 INFO L82 PathProgramCache]: Analyzing trace with hash 189467916, now seen corresponding path program 1 times [2021-05-02 21:41:50,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:41:50,170 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351342692] [2021-05-02 21:41:50,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:41:50,177 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:41:50,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [246086669] [2021-05-02 21:41:50,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 21:41:50,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:41:50,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-02 21:41:50,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:41:50,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:50,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:50,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:50,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:50,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:50,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:50,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:50,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:50,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:50,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:50,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:50,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:50,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:50,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:50,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:50,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:50,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:50,504 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 21:41:50,504 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:41:50,504 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351342692] [2021-05-02 21:41:50,504 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:41:50,504 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246086669] [2021-05-02 21:41:50,505 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246086669] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:41:50,505 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:41:50,505 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-05-02 21:41:50,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409906152] [2021-05-02 21:41:50,505 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 21:41:50,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:41:50,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 21:41:50,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-05-02 21:41:50,506 INFO L87 Difference]: Start difference. First operand 94 states and 122 transitions. Second operand has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 21:41:51,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:41:51,261 INFO L93 Difference]: Finished difference Result 121 states and 161 transitions. [2021-05-02 21:41:51,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-02 21:41:51,262 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 35 [2021-05-02 21:41:51,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:41:51,263 INFO L225 Difference]: With dead ends: 121 [2021-05-02 21:41:51,263 INFO L226 Difference]: Without dead ends: 110 [2021-05-02 21:41:51,263 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 402.3ms TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2021-05-02 21:41:51,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-05-02 21:41:51,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 101. [2021-05-02 21:41:51,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 75 states have (on average 1.3466666666666667) internal successors, (101), 79 states have internal predecessors, (101), 17 states have call successors, (17), 9 states have call predecessors, (17), 8 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2021-05-02 21:41:51,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 133 transitions. [2021-05-02 21:41:51,268 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 133 transitions. Word has length 35 [2021-05-02 21:41:51,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:41:51,268 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 133 transitions. [2021-05-02 21:41:51,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 21:41:51,269 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 133 transitions. [2021-05-02 21:41:51,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-02 21:41:51,273 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:41:51,273 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:41:51,473 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-05-02 21:41:51,474 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:41:51,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:41:51,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1979136443, now seen corresponding path program 2 times [2021-05-02 21:41:51,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:41:51,474 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006322692] [2021-05-02 21:41:51,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:41:51,483 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:41:51,483 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [696058874] [2021-05-02 21:41:51,483 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 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 21:41:51,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 21:41:51,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:41:51,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 21:41:51,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:41:51,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:51,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:51,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:51,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:51,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:51,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:51,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:51,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:51,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:51,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:51,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:51,594 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 21:41:51,595 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:41:51,595 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006322692] [2021-05-02 21:41:51,602 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:41:51,603 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696058874] [2021-05-02 21:41:51,603 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696058874] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:41:51,603 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:41:51,603 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-05-02 21:41:51,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370780554] [2021-05-02 21:41:51,603 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 21:41:51,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:41:51,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 21:41:51,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 21:41:51,604 INFO L87 Difference]: Start difference. First operand 101 states and 133 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 21:41:51,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:41:51,639 INFO L93 Difference]: Finished difference Result 120 states and 157 transitions. [2021-05-02 21:41:51,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 21:41:51,639 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 36 [2021-05-02 21:41:51,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:41:51,640 INFO L225 Difference]: With dead ends: 120 [2021-05-02 21:41:51,640 INFO L226 Difference]: Without dead ends: 120 [2021-05-02 21:41:51,641 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 28.8ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-05-02 21:41:51,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-05-02 21:41:51,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-05-02 21:41:51,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 94 states have (on average 1.3297872340425532) internal successors, (125), 96 states have internal predecessors, (125), 17 states have call successors, (17), 9 states have call predecessors, (17), 8 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2021-05-02 21:41:51,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 157 transitions. [2021-05-02 21:41:51,646 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 157 transitions. Word has length 36 [2021-05-02 21:41:51,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:41:51,646 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 157 transitions. [2021-05-02 21:41:51,646 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 21:41:51,646 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 157 transitions. [2021-05-02 21:41:51,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-02 21:41:51,647 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:41:51,647 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:41:51,852 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:41:51,852 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:41:51,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:41:51,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1980238710, now seen corresponding path program 2 times [2021-05-02 21:41:51,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:41:51,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126821235] [2021-05-02 21:41:51,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:41:51,858 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:41:51,859 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1820127989] [2021-05-02 21:41:51,859 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 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 21:41:51,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 21:41:51,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:41:51,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 51 conjunts are in the unsatisfiable core [2021-05-02 21:41:51,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:41:51,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:51,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:51,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:51,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:52,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:41:52,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:04,501 WARN L205 SmtUtils]: Spent 10.42 s on a formula simplification that was a NOOP. DAG size: 26 [2021-05-02 21:42:16,785 WARN L205 SmtUtils]: Spent 12.25 s on a formula simplification. DAG size of input: 47 DAG size of output: 34 [2021-05-02 21:42:16,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:16,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:16,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:16,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:16,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:16,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:16,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:16,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:16,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:16,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:16,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:16,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:16,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:16,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:16,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:16,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:16,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:16,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:16,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:16,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:16,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:16,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:16,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:16,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:16,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:16,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:16,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:16,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:17,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:17,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:17,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:17,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:17,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:17,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:17,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:17,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:17,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:17,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:17,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:17,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:17,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:17,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:17,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:17,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:17,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:17,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:17,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:17,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:18,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:18,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:18,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:18,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:18,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:42:18,209 WARN L159 QuantifierPusher]: Ignoring assumption.