/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 18:44:53,741 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 18:44:53,745 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 18:44:53,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 18:44:53,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 18:44:53,812 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 18:44:53,814 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 18:44:53,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 18:44:53,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 18:44:53,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 18:44:53,832 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 18:44:53,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 18:44:53,838 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 18:44:53,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 18:44:53,845 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 18:44:53,847 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 18:44:53,849 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 18:44:53,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 18:44:53,862 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 18:44:53,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 18:44:53,875 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 18:44:53,877 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 18:44:53,879 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 18:44:53,880 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 18:44:53,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 18:44:53,912 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 18:44:53,916 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 18:44:53,917 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 18:44:53,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 18:44:53,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 18:44:53,920 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 18:44:53,921 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 18:44:53,923 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 18:44:53,925 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 18:44:53,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 18:44:53,927 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 18:44:53,928 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 18:44:53,928 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 18:44:53,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 18:44:53,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 18:44:53,930 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 18:44:53,938 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 18:44:53,988 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 18:44:53,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 18:44:53,993 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 18:44:53,994 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 18:44:53,994 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 18:44:53,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 18:44:53,994 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 18:44:53,995 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 18:44:53,995 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 18:44:53,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 18:44:53,996 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 18:44:53,997 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 18:44:53,997 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 18:44:53,997 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 18:44:53,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 18:44:53,997 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 18:44:53,998 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 18:44:53,998 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 18:44:53,998 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 18:44:53,998 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 18:44:53,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 18:44:53,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:44:53,999 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 18:44:53,999 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 18:44:53,999 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 18:44:54,000 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 18:44:54,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 18:44:54,000 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 18:44:54,000 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 18:44:54,000 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 18:44:54,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 18:44:54,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 18:44:54,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 18:44:54,479 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 18:44:54,480 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 18:44:54,481 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+lhb-reducer.c [2020-10-28 18:44:54,571 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe13053e2/6278601734dd4647b9fecf951810421f/FLAG1bd2b3c7f [2020-10-28 18:44:55,726 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 18:44:55,727 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+lhb-reducer.c [2020-10-28 18:44:55,788 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe13053e2/6278601734dd4647b9fecf951810421f/FLAG1bd2b3c7f [2020-10-28 18:44:56,096 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe13053e2/6278601734dd4647b9fecf951810421f [2020-10-28 18:44:56,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 18:44:56,106 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 18:44:56,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 18:44:56,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 18:44:56,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 18:44:56,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:44:56" (1/1) ... [2020-10-28 18:44:56,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d36efc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:44:56, skipping insertion in model container [2020-10-28 18:44:56,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:44:56" (1/1) ... [2020-10-28 18:44:56,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 18:44:56,453 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 18:44:58,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:44:58,747 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 18:45:00,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:45:00,110 INFO L208 MainTranslator]: Completed translation [2020-10-28 18:45:00,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:45:00 WrapperNode [2020-10-28 18:45:00,112 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 18:45:00,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 18:45:00,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 18:45:00,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 18:45:00,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:45:00" (1/1) ... [2020-10-28 18:45:00,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:45:00" (1/1) ... [2020-10-28 18:45:00,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:45:00" (1/1) ... [2020-10-28 18:45:00,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:45:00" (1/1) ... [2020-10-28 18:45:00,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:45:00" (1/1) ... [2020-10-28 18:45:00,395 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:45:00" (1/1) ... [2020-10-28 18:45:00,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:45:00" (1/1) ... [2020-10-28 18:45:00,482 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 18:45:00,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 18:45:00,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 18:45:00,483 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 18:45:00,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:45:00" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-28 18:45:00,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 18:45:00,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 18:45:00,560 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 18:45:00,561 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 18:45:00,561 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 18:45:00,561 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 18:45:00,561 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 18:45:00,561 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 18:45:00,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 18:45:00,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 18:45:00,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 18:45:00,562 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 18:45:00,562 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 18:45:00,562 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 18:45:00,562 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 18:45:00,563 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 18:45:00,563 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 18:45:00,563 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 18:45:00,563 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 18:45:00,563 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-28 18:45:00,563 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-28 18:45:00,563 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-28 18:45:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 18:45:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 18:45:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 18:45:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 18:45:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 18:45:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 18:45:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 18:45:00,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 18:45:00,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 18:45:11,504 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 18:45:11,504 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 18:45:11,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:45:11 BoogieIcfgContainer [2020-10-28 18:45:11,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 18:45:11,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 18:45:11,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 18:45:11,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 18:45:11,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 06:44:56" (1/3) ... [2020-10-28 18:45:11,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a643336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:45:11, skipping insertion in model container [2020-10-28 18:45:11,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:45:00" (2/3) ... [2020-10-28 18:45:11,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a643336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:45:11, skipping insertion in model container [2020-10-28 18:45:11,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:45:11" (3/3) ... [2020-10-28 18:45:11,519 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+lhb-reducer.c [2020-10-28 18:45:11,531 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 18:45:11,539 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 18:45:11,554 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 18:45:11,594 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 18:45:11,594 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 18:45:11,595 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 18:45:11,595 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 18:45:11,595 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 18:45:11,595 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 18:45:11,595 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 18:45:11,596 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 18:45:11,651 INFO L276 IsEmpty]: Start isEmpty. Operand 2091 states. [2020-10-28 18:45:11,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-28 18:45:11,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:45:11,691 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:45:11,692 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:45:11,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:45:11,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1948812266, now seen corresponding path program 1 times [2020-10-28 18:45:11,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:45:11,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510184677] [2020-10-28 18:45:11,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:45:12,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:45:12,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:12,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:13,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:13,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:13,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:14,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:14,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:15,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:15,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:16,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:17,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:17,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:45:17,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 18:45:17,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:45:17,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-28 18:45:17,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:45:17,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:45:17,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:45:17,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:45:17,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 18:45:17,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 18:45:25,942 WARN L193 SmtUtils]: Spent 8.02 s on a formula simplification that was a NOOP. DAG size: 799 [2020-10-28 18:45:25,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:45:25,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:45:26,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:45:26,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:45:26,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:45:26,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:45:26,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-28 18:45:26,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:45:26,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:45:26,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:45:26,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:45:26,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:45:26,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:45:26,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:45:26,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510184677] [2020-10-28 18:45:26,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:45:26,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:45:26,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626187249] [2020-10-28 18:45:26,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:45:26,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:45:26,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:45:26,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:45:26,283 INFO L87 Difference]: Start difference. First operand 2091 states. Second operand 6 states. [2020-10-28 18:45:34,942 WARN L193 SmtUtils]: Spent 8.42 s on a formula simplification that was a NOOP. DAG size: 808 [2020-10-28 18:46:08,299 WARN L193 SmtUtils]: Spent 8.47 s on a formula simplification that was a NOOP. DAG size: 806 [2020-10-28 18:46:09,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:46:09,659 INFO L93 Difference]: Finished difference Result 3633 states and 6476 transitions. [2020-10-28 18:46:09,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:46:09,662 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2020-10-28 18:46:09,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:46:09,711 INFO L225 Difference]: With dead ends: 3633 [2020-10-28 18:46:09,711 INFO L226 Difference]: Without dead ends: 2109 [2020-10-28 18:46:09,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 25.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:46:09,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2109 states. [2020-10-28 18:46:09,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2109 to 2027. [2020-10-28 18:46:09,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2027 states. [2020-10-28 18:46:09,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2027 states to 2027 states and 2763 transitions. [2020-10-28 18:46:09,948 INFO L78 Accepts]: Start accepts. Automaton has 2027 states and 2763 transitions. Word has length 106 [2020-10-28 18:46:09,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:46:09,949 INFO L481 AbstractCegarLoop]: Abstraction has 2027 states and 2763 transitions. [2020-10-28 18:46:09,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:46:09,950 INFO L276 IsEmpty]: Start isEmpty. Operand 2027 states and 2763 transitions. [2020-10-28 18:46:09,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-28 18:46:09,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:46:09,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:46:09,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 18:46:09,963 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:46:09,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:46:09,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1460411003, now seen corresponding path program 1 times [2020-10-28 18:46:09,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:46:09,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602829171] [2020-10-28 18:46:09,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:46:10,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:46:10,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:10,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:10,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:10,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:10,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:11,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:12,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:13,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:14,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:14,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:15,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:46:15,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 18:46:15,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 18:46:15,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-28 18:46:15,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:46:15,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:46:15,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 18:46:15,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 18:46:15,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 18:46:15,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:46:23,713 WARN L193 SmtUtils]: Spent 8.35 s on a formula simplification that was a NOOP. DAG size: 799 [2020-10-28 18:46:23,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:46:23,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:46:23,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:46:23,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:46:23,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:46:23,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:46:23,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 18:46:23,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:46:23,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:46:23,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:46:23,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:46:23,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:46:23,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:46:23,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:46:23,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602829171] [2020-10-28 18:46:23,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:46:23,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 18:46:23,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434358992] [2020-10-28 18:46:23,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 18:46:23,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:46:23,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 18:46:23,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:46:23,862 INFO L87 Difference]: Start difference. First operand 2027 states and 2763 transitions. Second operand 7 states. [2020-10-28 18:46:32,673 WARN L193 SmtUtils]: Spent 8.55 s on a formula simplification that was a NOOP. DAG size: 803 [2020-10-28 18:47:08,268 WARN L193 SmtUtils]: Spent 8.35 s on a formula simplification that was a NOOP. DAG size: 803 [2020-10-28 18:47:18,106 WARN L193 SmtUtils]: Spent 8.59 s on a formula simplification that was a NOOP. DAG size: 805 [2020-10-28 18:47:28,338 WARN L193 SmtUtils]: Spent 8.42 s on a formula simplification that was a NOOP. DAG size: 800 [2020-10-28 18:47:36,498 WARN L193 SmtUtils]: Spent 8.02 s on a formula simplification that was a NOOP. DAG size: 801 [2020-10-28 18:47:47,151 WARN L193 SmtUtils]: Spent 8.21 s on a formula simplification that was a NOOP. DAG size: 802 [2020-10-28 18:47:55,433 WARN L193 SmtUtils]: Spent 8.21 s on a formula simplification that was a NOOP. DAG size: 803 [2020-10-28 18:48:04,119 WARN L193 SmtUtils]: Spent 8.18 s on a formula simplification that was a NOOP. DAG size: 804 [2020-10-28 18:48:04,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:48:04,165 INFO L93 Difference]: Finished difference Result 7567 states and 10801 transitions. [2020-10-28 18:48:04,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 18:48:04,169 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 107 [2020-10-28 18:48:04,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:48:04,202 INFO L225 Difference]: With dead ends: 7567 [2020-10-28 18:48:04,202 INFO L226 Difference]: Without dead ends: 6039 [2020-10-28 18:48:04,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 75.5s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-28 18:48:04,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6039 states. [2020-10-28 18:48:04,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6039 to 4159. [2020-10-28 18:48:04,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4159 states. [2020-10-28 18:48:04,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4159 states to 4159 states and 5934 transitions. [2020-10-28 18:48:04,454 INFO L78 Accepts]: Start accepts. Automaton has 4159 states and 5934 transitions. Word has length 107 [2020-10-28 18:48:04,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:48:04,460 INFO L481 AbstractCegarLoop]: Abstraction has 4159 states and 5934 transitions. [2020-10-28 18:48:04,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 18:48:04,460 INFO L276 IsEmpty]: Start isEmpty. Operand 4159 states and 5934 transitions. [2020-10-28 18:48:04,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-28 18:48:04,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:48:04,478 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:48:04,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 18:48:04,478 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:48:04,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:48:04,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1712957349, now seen corresponding path program 1 times [2020-10-28 18:48:04,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:48:04,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002285942] [2020-10-28 18:48:04,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:48:04,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:48:04,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:04,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:04,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:05,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:05,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:06,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:07,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:08,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:09,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:48:09,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 18:48:09,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:48:09,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-28 18:48:09,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:48:09,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:48:09,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:48:09,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:48:09,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 18:48:09,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:48:17,957 WARN L193 SmtUtils]: Spent 8.01 s on a formula simplification that was a NOOP. DAG size: 799 [2020-10-28 18:48:17,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:48:17,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:48:18,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:18,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:48:18,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:48:18,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:48:18,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-28 18:48:18,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:48:18,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:48:18,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:48:18,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:48:18,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:48:18,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:48:18,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:48:18,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002285942] [2020-10-28 18:48:18,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:48:18,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:48:18,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033151211] [2020-10-28 18:48:18,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:48:18,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:48:18,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:48:18,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:48:18,276 INFO L87 Difference]: Start difference. First operand 4159 states and 5934 transitions. Second operand 6 states. [2020-10-28 18:48:26,697 WARN L193 SmtUtils]: Spent 8.20 s on a formula simplification that was a NOOP. DAG size: 808 [2020-10-28 18:48:48,688 WARN L193 SmtUtils]: Spent 7.92 s on a formula simplification that was a NOOP. DAG size: 806 [2020-10-28 18:48:49,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:48:49,952 INFO L93 Difference]: Finished difference Result 10018 states and 14553 transitions. [2020-10-28 18:48:49,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:48:49,955 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2020-10-28 18:48:49,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:48:49,983 INFO L225 Difference]: With dead ends: 10018 [2020-10-28 18:48:49,983 INFO L226 Difference]: Without dead ends: 6142 [2020-10-28 18:48:49,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:48:49,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6142 states. [2020-10-28 18:48:50,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6142 to 6084. [2020-10-28 18:48:50,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6084 states. [2020-10-28 18:48:50,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6084 states to 6084 states and 8862 transitions. [2020-10-28 18:48:50,308 INFO L78 Accepts]: Start accepts. Automaton has 6084 states and 8862 transitions. Word has length 108 [2020-10-28 18:48:50,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:48:50,308 INFO L481 AbstractCegarLoop]: Abstraction has 6084 states and 8862 transitions. [2020-10-28 18:48:50,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:48:50,308 INFO L276 IsEmpty]: Start isEmpty. Operand 6084 states and 8862 transitions. [2020-10-28 18:48:50,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-28 18:48:50,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:48:50,322 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:48:50,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 18:48:50,323 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:48:50,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:48:50,323 INFO L82 PathProgramCache]: Analyzing trace with hash 367435518, now seen corresponding path program 1 times [2020-10-28 18:48:50,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:48:50,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658517146] [2020-10-28 18:48:50,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY