/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:23:25,301 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:23:25,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:23:25,350 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:23:25,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:23:25,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:23:25,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:23:25,369 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:23:25,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:23:25,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:23:25,376 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:23:25,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:23:25,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:23:25,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:23:25,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:23:25,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:23:25,388 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:23:25,389 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:23:25,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:23:25,393 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:23:25,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:23:25,396 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:23:25,398 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:23:25,399 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:23:25,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:23:25,402 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:23:25,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:23:25,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:23:25,404 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:23:25,405 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:23:25,405 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:23:25,406 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:23:25,408 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:23:25,409 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:23:25,410 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:23:25,410 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:23:25,411 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:23:25,412 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:23:25,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:23:25,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:23:25,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:23:25,415 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 [2020-09-24 17:23:25,442 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:23:25,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:23:25,444 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:23:25,444 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:23:25,444 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:23:25,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:23:25,445 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:23:25,445 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:23:25,445 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:23:25,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:23:25,446 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:23:25,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:23:25,446 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:23:25,446 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:23:25,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:23:25,447 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:23:25,447 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:23:25,447 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:23:25,447 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:23:25,447 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:23:25,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:23:25,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:23:25,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:23:25,448 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:23:25,448 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:23:25,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:23:25,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:23:25,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:23:25,449 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:23:25,449 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement 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;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; [2020-09-24 17:23:25,900 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:23:25,929 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:23:25,933 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:23:25,935 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:23:25,937 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:23:25,939 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c [2020-09-24 17:23:26,038 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a91d19ca7/f8c4586a8db64a5bbe9b6d38145077b5/FLAGbae3d378a [2020-09-24 17:23:26,656 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:23:26,657 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c [2020-09-24 17:23:26,682 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a91d19ca7/f8c4586a8db64a5bbe9b6d38145077b5/FLAGbae3d378a [2020-09-24 17:23:26,992 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a91d19ca7/f8c4586a8db64a5bbe9b6d38145077b5 [2020-09-24 17:23:27,006 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:23:27,012 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:23:27,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:23:27,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:23:27,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:23:27,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:23:26" (1/1) ... [2020-09-24 17:23:27,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a35e781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:23:27, skipping insertion in model container [2020-09-24 17:23:27,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:23:26" (1/1) ... [2020-09-24 17:23:27,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:23:27,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:23:27,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:23:27,720 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:23:27,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:23:27,818 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:23:27,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:23:27 WrapperNode [2020-09-24 17:23:27,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:23:27,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:23:27,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:23:27,820 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:23:27,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:23:27" (1/1) ... [2020-09-24 17:23:27,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:23:27" (1/1) ... [2020-09-24 17:23:27,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:23:27" (1/1) ... [2020-09-24 17:23:27,850 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:23:27" (1/1) ... [2020-09-24 17:23:27,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:23:27" (1/1) ... [2020-09-24 17:23:27,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:23:27" (1/1) ... [2020-09-24 17:23:27,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:23:27" (1/1) ... [2020-09-24 17:23:27,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:23:27,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:23:27,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:23:27,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:23:27,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:23:27" (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 [2020-09-24 17:23:27,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:23:27,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:23:27,988 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 17:23:27,988 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side1_failed_history [2020-09-24 17:23:27,988 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2020-09-24 17:23:27,989 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side2_failed_history [2020-09-24 17:23:27,989 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2020-09-24 17:23:27,990 INFO L138 BoogieDeclarations]: Found implementation of procedure write_active_side_history [2020-09-24 17:23:27,990 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2020-09-24 17:23:27,991 INFO L138 BoogieDeclarations]: Found implementation of procedure write_manual_selection_history [2020-09-24 17:23:27,991 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2020-09-24 17:23:27,991 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-09-24 17:23:27,991 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2020-09-24 17:23:27,991 INFO L138 BoogieDeclarations]: Found implementation of procedure Console_task_each_pals_period [2020-09-24 17:23:27,992 INFO L138 BoogieDeclarations]: Found implementation of procedure Side1_activestandby_task_each_pals_period [2020-09-24 17:23:27,993 INFO L138 BoogieDeclarations]: Found implementation of procedure Side2_activestandby_task_each_pals_period [2020-09-24 17:23:27,993 INFO L138 BoogieDeclarations]: Found implementation of procedure Pendulum_prism_task_each_pals_period [2020-09-24 17:23:27,993 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-09-24 17:23:27,993 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:23:27,994 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-09-24 17:23:27,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:23:27,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 17:23:27,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 17:23:27,994 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-24 17:23:27,995 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-24 17:23:27,996 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-24 17:23:27,996 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 17:23:27,996 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 17:23:27,996 INFO L130 BoogieDeclarations]: Found specification of procedure write_side1_failed_history [2020-09-24 17:23:27,996 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2020-09-24 17:23:27,997 INFO L130 BoogieDeclarations]: Found specification of procedure write_side2_failed_history [2020-09-24 17:23:27,997 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2020-09-24 17:23:27,997 INFO L130 BoogieDeclarations]: Found specification of procedure write_active_side_history [2020-09-24 17:23:27,997 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2020-09-24 17:23:27,997 INFO L130 BoogieDeclarations]: Found specification of procedure write_manual_selection_history [2020-09-24 17:23:27,997 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2020-09-24 17:23:27,997 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-24 17:23:27,998 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2020-09-24 17:23:27,998 INFO L130 BoogieDeclarations]: Found specification of procedure Console_task_each_pals_period [2020-09-24 17:23:27,998 INFO L130 BoogieDeclarations]: Found specification of procedure Side1_activestandby_task_each_pals_period [2020-09-24 17:23:27,998 INFO L130 BoogieDeclarations]: Found specification of procedure Side2_activestandby_task_each_pals_period [2020-09-24 17:23:27,998 INFO L130 BoogieDeclarations]: Found specification of procedure Pendulum_prism_task_each_pals_period [2020-09-24 17:23:27,998 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 17:23:27,999 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:23:27,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:23:27,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:23:29,142 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:23:29,143 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 17:23:29,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:23:29 BoogieIcfgContainer [2020-09-24 17:23:29,153 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:23:29,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:23:29,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:23:29,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:23:29,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:23:26" (1/3) ... [2020-09-24 17:23:29,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@380f3aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:23:29, skipping insertion in model container [2020-09-24 17:23:29,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:23:27" (2/3) ... [2020-09-24 17:23:29,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@380f3aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:23:29, skipping insertion in model container [2020-09-24 17:23:29,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:23:29" (3/3) ... [2020-09-24 17:23:29,162 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c [2020-09-24 17:23:29,174 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:23:29,186 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:23:29,210 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:23:29,247 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:23:29,247 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:23:29,247 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:23:29,247 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:23:29,248 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:23:29,248 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:23:29,248 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:23:29,248 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:23:29,282 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states. [2020-09-24 17:23:29,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-09-24 17:23:29,306 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:23:29,308 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:23:29,308 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:23:29,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:23:29,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1455574608, now seen corresponding path program 1 times [2020-09-24 17:23:29,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:23:29,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828741398] [2020-09-24 17:23:29,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:23:29,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:29,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:30,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:30,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:30,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:30,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:30,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:31,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:33,619 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:33,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-09-24 17:23:33,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 17:23:33,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3930 [2020-09-24 17:23:33,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:33,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:33,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 230 [2020-09-24 17:23:33,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:33,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 17:23:34,012 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-24 17:23:34,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:23:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:34,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:34,075 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:34,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 17:23:34,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:34,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 17:23:34,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:34,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:34,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:34,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:34,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:34,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-24 17:23:34,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:34,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:34,116 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:34,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:23:34,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:34,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:23:34,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:34,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:34,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:34,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:34,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:23:34,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 17:23:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:34,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:34,133 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:34,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:23:34,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:34,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:23:34,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:34,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:34,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:34,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:34,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 17:23:34,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-09-24 17:23:34,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:34,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:34,218 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:34,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 17:23:34,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:34,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 17:23:34,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:34,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:34,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:34,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:34,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-24 17:23:34,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:23:34,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:34,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:34,273 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:34,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:23:34,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:34,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 17:23:34,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:34,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:34,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:34,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:34,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:34,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-24 17:23:34,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:34,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:34,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:34,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:34,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:34,421 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:34,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 17:23:34,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 17:23:34,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-24 17:23:34,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:34,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:34,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 17:23:34,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:34,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:34,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 17:23:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:34,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:34,457 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:34,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:23:34,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:34,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:23:34,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:34,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:34,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:34,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:34,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:34,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-09-24 17:23:34,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:34,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:34,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:34,599 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:34,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 17:23:34,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:23:34,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-24 17:23:34,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:34,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:34,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 17:23:34,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:34,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:34,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 17:23:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:34,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:34,644 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:34,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:23:34,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:34,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:23:34,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:34,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:34,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:34,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:34,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:34,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:23:34,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828741398] [2020-09-24 17:23:34,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:23:34,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 17:23:34,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631420306] [2020-09-24 17:23:34,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 17:23:34,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:23:34,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 17:23:34,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-24 17:23:34,772 INFO L87 Difference]: Start difference. First operand 577 states. Second operand 9 states. [2020-09-24 17:23:37,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:23:37,501 INFO L93 Difference]: Finished difference Result 1024 states and 1272 transitions. [2020-09-24 17:23:37,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 17:23:37,503 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 228 [2020-09-24 17:23:37,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:23:37,541 INFO L225 Difference]: With dead ends: 1024 [2020-09-24 17:23:37,542 INFO L226 Difference]: Without dead ends: 565 [2020-09-24 17:23:37,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=131, Invalid=249, Unknown=0, NotChecked=0, Total=380 [2020-09-24 17:23:37,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-09-24 17:23:37,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 565. [2020-09-24 17:23:37,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 565 states. [2020-09-24 17:23:37,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 670 transitions. [2020-09-24 17:23:37,719 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 670 transitions. Word has length 228 [2020-09-24 17:23:37,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:23:37,733 INFO L479 AbstractCegarLoop]: Abstraction has 565 states and 670 transitions. [2020-09-24 17:23:37,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 17:23:37,733 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 670 transitions. [2020-09-24 17:23:37,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-09-24 17:23:37,744 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:23:37,744 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:23:37,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:23:37,745 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:23:37,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:23:37,745 INFO L82 PathProgramCache]: Analyzing trace with hash -839714288, now seen corresponding path program 1 times [2020-09-24 17:23:37,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:23:37,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829666201] [2020-09-24 17:23:37,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:23:37,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:37,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:38,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:40,066 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:40,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-09-24 17:23:40,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:23:40,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2278 [2020-09-24 17:23:40,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:40,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:23:40,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 245 [2020-09-24 17:23:40,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 17:23:40,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:40,328 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-24 17:23:40,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:23:40,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:40,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:40,380 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:40,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 17:23:40,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:40,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 17:23:40,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:40,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:40,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:40,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:40,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:23:40,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-24 17:23:40,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:40,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:40,409 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:40,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:23:40,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:40,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:23:40,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:40,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:40,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:40,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:40,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:23:40,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 17:23:40,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:40,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:40,424 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:40,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:23:40,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:40,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:23:40,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:40,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:40,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:40,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:40,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:23:40,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-09-24 17:23:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:40,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:40,481 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:40,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 17:23:40,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:40,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 17:23:40,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:40,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:40,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:40,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:40,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:23:40,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:23:40,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:40,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:40,520 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:40,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:23:40,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:40,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:23:40,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:40,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:40,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:40,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:40,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:23:40,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-24 17:23:40,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:40,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:40,583 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:40,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 17:23:40,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:40,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 17:23:40,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:40,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:40,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:40,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:40,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:40,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 17:23:40,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:40,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:40,618 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:40,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:23:40,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:40,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:23:40,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:40,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:40,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:40,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:40,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:40,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-09-24 17:23:40,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:40,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:40,683 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:40,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 17:23:40,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:40,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 17:23:40,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:40,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:40,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:40,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:40,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:40,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 17:23:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:40,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:40,722 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:23:40,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:23:40,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:23:40,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:23:40,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:23:40,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:23:40,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:23:40,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:23:40,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:23:40,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:23:40,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829666201] [2020-09-24 17:23:40,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:23:40,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 17:23:40,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503271257] [2020-09-24 17:23:40,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 17:23:40,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:23:40,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 17:23:40,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-24 17:23:40,828 INFO L87 Difference]: Start difference. First operand 565 states and 670 transitions. Second operand 11 states. [2020-09-24 17:23:43,121 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-09-24 17:23:43,284 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-09-24 17:23:44,440 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-09-24 17:23:45,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:23:45,203 INFO L93 Difference]: Finished difference Result 996 states and 1200 transitions. [2020-09-24 17:23:45,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 17:23:45,204 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 228 [2020-09-24 17:23:45,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:23:45,211 INFO L225 Difference]: With dead ends: 996 [2020-09-24 17:23:45,212 INFO L226 Difference]: Without dead ends: 572 [2020-09-24 17:23:45,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=201, Invalid=399, Unknown=0, NotChecked=0, Total=600 [2020-09-24 17:23:45,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2020-09-24 17:23:45,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 570. [2020-09-24 17:23:45,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 570 states. [2020-09-24 17:23:45,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 674 transitions. [2020-09-24 17:23:45,268 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 674 transitions. Word has length 228 [2020-09-24 17:23:45,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:23:45,269 INFO L479 AbstractCegarLoop]: Abstraction has 570 states and 674 transitions. [2020-09-24 17:23:45,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 17:23:45,270 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 674 transitions. [2020-09-24 17:23:45,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-09-24 17:23:45,275 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:23:45,275 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:23:45,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:23:45,276 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:23:45,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:23:45,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1393853320, now seen corresponding path program 1 times [2020-09-24 17:23:45,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:23:45,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286418221] [2020-09-24 17:23:45,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:23:45,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:23:45,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:45,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:48,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:23:49,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:05,285 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:24:05,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-09-24 17:24:05,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 17:24:05,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19965 [2020-09-24 17:24:05,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:24:05,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:24:05,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-24 17:24:05,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 17:24:05,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:24:05,507 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-24 17:24:05,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:24:05,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:24:05,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:05,554 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:24:05,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 17:24:05,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:24:05,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 17:24:05,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:24:05,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:24:05,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:24:05,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:24:05,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:24:05,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-24 17:24:05,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:24:05,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:05,598 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:24:05,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:24:05,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:24:05,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 17:24:05,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:24:05,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:24:05,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:24:05,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 17:24:05,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:24:05,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 17:24:05,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:24:05,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:05,653 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:24:05,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:24:05,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:24:05,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 17:24:05,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:24:05,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:24:05,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 17:24:05,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:24:05,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:24:05,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-09-24 17:24:05,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:24:05,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:05,744 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:24:05,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 17:24:05,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:24:05,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 17:24:05,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:24:05,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:24:05,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 17:24:05,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:24:05,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:24:05,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 17:24:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:24:05,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:05,788 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:24:05,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:24:05,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:24:05,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:24:05,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:24:05,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:24:05,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:24:05,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:24:05,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:24:05,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-24 17:24:05,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:24:05,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:05,878 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:24:05,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 17:24:05,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:24:05,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 17:24:05,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:24:05,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:24:05,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-24 17:24:05,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:24:05,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:24:05,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 17:24:05,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:24:05,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:05,927 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:24:05,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:24:05,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:24:05,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:24:05,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:24:05,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:24:05,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:24:05,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:24:05,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:24:05,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-09-24 17:24:05,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:24:06,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:06,024 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:24:06,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 17:24:06,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:24:06,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 17:24:06,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:24:06,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:24:06,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-24 17:24:06,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:24:06,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 22 [2020-09-24 17:24:06,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 17:24:06,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:24:06,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:06,101 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:24:06,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:24:06,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:24:06,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:24:06,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:24:06,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:24:06,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:24:06,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:24:06,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 17:24:06,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-24 17:24:06,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:24:06,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:06,175 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:24:06,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 17:24:06,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:24:06,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 17:24:06,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:24:06,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:24:06,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 17:24:06,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:24:06,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:24:06,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 17:24:06,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:24:06,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:06,192 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:24:06,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:24:06,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:24:06,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:24:06,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:24:06,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:24:06,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:24:06,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:24:06,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:24:06,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 17:24:06,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:24:06,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:06,242 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:24:06,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:24:06,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:24:06,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:24:06,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:24:06,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:24:06,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:24:06,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:24:06,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:24:06,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-09-24 17:24:06,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:24:06,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:06,260 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:24:06,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:24:06,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:24:06,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:24:06,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:24:06,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:24:06,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 17:24:06,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:24:06,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:24:06,431 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 17:24:06,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286418221] [2020-09-24 17:24:06,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:24:06,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 17:24:06,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107767101] [2020-09-24 17:24:06,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 17:24:06,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:24:06,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 17:24:06,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-09-24 17:24:06,438 INFO L87 Difference]: Start difference. First operand 570 states and 674 transitions. Second operand 16 states. [2020-09-24 17:24:07,363 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-09-24 17:24:07,690 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-09-24 17:24:07,892 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-09-24 17:24:12,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:24:12,297 INFO L93 Difference]: Finished difference Result 1050 states and 1252 transitions. [2020-09-24 17:24:12,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 17:24:12,298 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 301 [2020-09-24 17:24:12,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:24:12,303 INFO L225 Difference]: With dead ends: 1050 [2020-09-24 17:24:12,303 INFO L226 Difference]: Without dead ends: 586 [2020-09-24 17:24:12,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=329, Invalid=931, Unknown=0, NotChecked=0, Total=1260 [2020-09-24 17:24:12,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-09-24 17:24:12,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 558. [2020-09-24 17:24:12,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 558 states. [2020-09-24 17:24:12,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 650 transitions. [2020-09-24 17:24:12,343 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 650 transitions. Word has length 301 [2020-09-24 17:24:12,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:24:12,343 INFO L479 AbstractCegarLoop]: Abstraction has 558 states and 650 transitions. [2020-09-24 17:24:12,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 17:24:12,344 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 650 transitions. [2020-09-24 17:24:12,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-09-24 17:24:12,350 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:24:12,350 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:24:12,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 17:24:12,351 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:24:12,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:24:12,351 INFO L82 PathProgramCache]: Analyzing trace with hash -734642201, now seen corresponding path program 1 times [2020-09-24 17:24:12,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:24:12,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839512989] [2020-09-24 17:24:12,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:24:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:24:12,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:13,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:13,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking...