/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/eca-rers2012/Problem05_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 10:51:38,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 10:51:38,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 10:51:38,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 10:51:38,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 10:51:38,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 10:51:38,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 10:51:38,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 10:51:38,699 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 10:51:38,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 10:51:38,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 10:51:38,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 10:51:38,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 10:51:38,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 10:51:38,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 10:51:38,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 10:51:38,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 10:51:38,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 10:51:38,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 10:51:38,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 10:51:38,737 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 10:51:38,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 10:51:38,742 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 10:51:38,743 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 10:51:38,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 10:51:38,758 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 10:51:38,759 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 10:51:38,761 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 10:51:38,762 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 10:51:38,764 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 10:51:38,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 10:51:38,766 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 10:51:38,767 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 10:51:38,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 10:51:38,770 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 10:51:38,770 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 10:51:38,771 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 10:51:38,772 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 10:51:38,772 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 10:51:38,773 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 10:51:38,774 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 10:51:38,781 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 10:51:38,833 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 10:51:38,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 10:51:38,839 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 10:51:38,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 10:51:38,839 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 10:51:38,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 10:51:38,840 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 10:51:38,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 10:51:38,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 10:51:38,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 10:51:38,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 10:51:38,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 10:51:38,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 10:51:38,842 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 10:51:38,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 10:51:38,843 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 10:51:38,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 10:51:38,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 10:51:38,843 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 10:51:38,843 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 10:51:38,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 10:51:38,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:51:38,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 10:51:38,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 10:51:38,845 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 10:51:38,845 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 10:51:38,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 10:51:38,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 10:51:38,845 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 10:51:38,846 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 10:51:39,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 10:51:39,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 10:51:39,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 10:51:39,318 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 10:51:39,323 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 10:51:39,324 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label50.c [2020-10-28 10:51:39,395 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4a4b0f383/26fe7984a0de4ac79fcf9408b57d5835/FLAGe5790f00f [2020-10-28 10:51:40,647 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 10:51:40,647 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label50.c [2020-10-28 10:51:40,704 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4a4b0f383/26fe7984a0de4ac79fcf9408b57d5835/FLAGe5790f00f [2020-10-28 10:51:40,849 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4a4b0f383/26fe7984a0de4ac79fcf9408b57d5835 [2020-10-28 10:51:40,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 10:51:40,859 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 10:51:40,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 10:51:40,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 10:51:40,866 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 10:51:40,867 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:51:40" (1/1) ... [2020-10-28 10:51:40,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c4c0e65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:51:40, skipping insertion in model container [2020-10-28 10:51:40,871 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:51:40" (1/1) ... [2020-10-28 10:51:40,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 10:51:41,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 10:51:43,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:51:43,568 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 10:51:44,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:51:44,807 INFO L208 MainTranslator]: Completed translation [2020-10-28 10:51:44,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:51:44 WrapperNode [2020-10-28 10:51:44,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 10:51:44,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 10:51:44,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 10:51:44,810 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 10:51:44,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:51:44" (1/1) ... [2020-10-28 10:51:44,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:51:44" (1/1) ... [2020-10-28 10:51:44,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:51:44" (1/1) ... [2020-10-28 10:51:44,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:51:44" (1/1) ... [2020-10-28 10:51:45,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:51:44" (1/1) ... [2020-10-28 10:51:45,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:51:44" (1/1) ... [2020-10-28 10:51:45,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:51:44" (1/1) ... [2020-10-28 10:51:45,476 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 10:51:45,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 10:51:45,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 10:51:45,479 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 10:51:45,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:51:44" (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 10:51:45,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 10:51:45,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 10:51:45,563 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 10:51:45,563 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 10:51:45,563 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 10:51:45,563 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 10:51:45,563 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 10:51:45,563 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-28 10:51:45,564 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-28 10:51:45,564 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-28 10:51:45,564 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-28 10:51:45,564 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 10:51:45,564 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 10:51:45,564 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 10:51:45,564 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 10:51:45,565 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 10:51:45,565 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-28 10:51:45,565 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-28 10:51:45,565 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-28 10:51:45,565 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-28 10:51:45,565 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 10:51:45,566 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 10:51:45,566 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 10:51:45,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 10:51:45,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 10:51:45,566 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 10:51:45,566 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 10:51:45,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 10:51:45,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 10:51:45,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 10:51:45,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 10:51:45,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 10:51:45,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 10:51:55,917 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 10:51:55,917 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 10:51:55,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:51:55 BoogieIcfgContainer [2020-10-28 10:51:55,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 10:51:55,927 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 10:51:55,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 10:51:55,931 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 10:51:55,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:51:40" (1/3) ... [2020-10-28 10:51:55,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50e5d69e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:51:55, skipping insertion in model container [2020-10-28 10:51:55,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:51:44" (2/3) ... [2020-10-28 10:51:55,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50e5d69e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:51:55, skipping insertion in model container [2020-10-28 10:51:55,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:51:55" (3/3) ... [2020-10-28 10:51:55,935 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label50.c [2020-10-28 10:51:55,949 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 10:51:55,956 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 10:51:55,971 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 10:51:56,018 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 10:51:56,018 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 10:51:56,018 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 10:51:56,018 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 10:51:56,019 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 10:51:56,019 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 10:51:56,019 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 10:51:56,019 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 10:51:56,075 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-28 10:51:56,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1704 [2020-10-28 10:51:56,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:51:56,216 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:51:56,216 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:51:56,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:51:56,224 INFO L82 PathProgramCache]: Analyzing trace with hash 896557841, now seen corresponding path program 1 times [2020-10-28 10:51:56,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:51:56,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828621185] [2020-10-28 10:51:56,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:51:57,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:51:57,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:52:02,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:52:02,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1727 [2020-10-28 10:52:02,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:52:02,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5098 [2020-10-28 10:52:02,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:52:02,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:52:02,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 10:52:02,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:52:02,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1718 [2020-10-28 10:52:02,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 10:52:04,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:52:04,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:52:04,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:52:04,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:52:04,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:52:04,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:52:04,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 10:52:04,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:52:04,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:52:04,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:52:04,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:52:04,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:52:04,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:52:07,281 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 10:52:07,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828621185] [2020-10-28 10:52:07,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:52:07,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 10:52:07,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28744174] [2020-10-28 10:52:07,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:52:07,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:52:07,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:52:07,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:52:07,334 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 5 states. [2020-10-28 10:52:39,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:52:39,385 INFO L93 Difference]: Finished difference Result 8116 states and 15421 transitions. [2020-10-28 10:52:39,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 10:52:39,388 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1703 [2020-10-28 10:52:39,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:52:39,460 INFO L225 Difference]: With dead ends: 8116 [2020-10-28 10:52:39,460 INFO L226 Difference]: Without dead ends: 5822 [2020-10-28 10:52:39,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:52:39,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5822 states. [2020-10-28 10:52:39,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5822 to 5770. [2020-10-28 10:52:39,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5770 states. [2020-10-28 10:52:39,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5770 states to 5770 states and 10073 transitions. [2020-10-28 10:52:39,835 INFO L78 Accepts]: Start accepts. Automaton has 5770 states and 10073 transitions. Word has length 1703 [2020-10-28 10:52:39,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:52:39,843 INFO L481 AbstractCegarLoop]: Abstraction has 5770 states and 10073 transitions. [2020-10-28 10:52:39,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:52:39,844 INFO L276 IsEmpty]: Start isEmpty. Operand 5770 states and 10073 transitions. [2020-10-28 10:52:40,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1713 [2020-10-28 10:52:40,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:52:40,123 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:52:40,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 10:52:40,126 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:52:40,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:52:40,127 INFO L82 PathProgramCache]: Analyzing trace with hash 2088839573, now seen corresponding path program 1 times [2020-10-28 10:52:40,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:52:40,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17277303] [2020-10-28 10:52:40,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:52:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:52:40,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:52:42,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:52:45,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:52:45,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1738 [2020-10-28 10:52:45,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:52:45,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5128 [2020-10-28 10:52:45,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:52:45,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:52:45,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:52:45,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:52:45,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 10:52:45,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 10:52:46,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:52:46,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:52:46,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:52:46,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:52:46,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:52:46,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:52:46,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 10:52:46,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:52:46,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:52:46,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:52:46,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:52:46,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:52:46,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:52:46,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:52:46,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:52:46,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:52:46,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:52:46,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 10:52:46,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:52:46,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 10:52:46,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:52:46,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:52:46,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:52:46,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:52:46,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 10:52:46,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:52:48,028 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:52:48,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17277303] [2020-10-28 10:52:48,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:52:48,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 10:52:48,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96985772] [2020-10-28 10:52:48,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:52:48,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:52:48,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:52:48,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:52:48,035 INFO L87 Difference]: Start difference. First operand 5770 states and 10073 transitions. Second operand 8 states. [2020-10-28 10:53:32,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:53:32,017 INFO L93 Difference]: Finished difference Result 22618 states and 40704 transitions. [2020-10-28 10:53:32,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 10:53:32,025 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1712 [2020-10-28 10:53:32,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:53:32,132 INFO L225 Difference]: With dead ends: 22618 [2020-10-28 10:53:32,132 INFO L226 Difference]: Without dead ends: 16854 [2020-10-28 10:53:32,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 10:53:32,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16854 states. [2020-10-28 10:53:32,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16854 to 16593. [2020-10-28 10:53:32,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16593 states. [2020-10-28 10:53:32,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16593 states to 16593 states and 27857 transitions. [2020-10-28 10:53:32,726 INFO L78 Accepts]: Start accepts. Automaton has 16593 states and 27857 transitions. Word has length 1712 [2020-10-28 10:53:32,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:53:32,727 INFO L481 AbstractCegarLoop]: Abstraction has 16593 states and 27857 transitions. [2020-10-28 10:53:32,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:53:32,727 INFO L276 IsEmpty]: Start isEmpty. Operand 16593 states and 27857 transitions. [2020-10-28 10:53:32,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1715 [2020-10-28 10:53:32,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:53:32,907 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:53:32,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 10:53:32,908 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:53:32,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:53:32,913 INFO L82 PathProgramCache]: Analyzing trace with hash -2128730343, now seen corresponding path program 1 times [2020-10-28 10:53:32,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:53:32,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869609528] [2020-10-28 10:53:32,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:53:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:53:33,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:53:34,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:53:38,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:53:38,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1740 [2020-10-28 10:53:38,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:53:38,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 10:53:38,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:53:38,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:53:38,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:53:38,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:53:38,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 10:53:38,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:53:38,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:53:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:53:38,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:53:38,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:53:38,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:53:38,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:53:38,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 10:53:38,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:53:38,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:53:38,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:53:38,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:53:38,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:53:38,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:53:38,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:53:38,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:53:38,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:53:38,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:53:38,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 10:53:38,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:53:38,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 10:53:38,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:53:38,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:53:38,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:53:38,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:53:38,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 10:53:38,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:53:40,783 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:53:40,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869609528] [2020-10-28 10:53:40,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:53:40,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:53:40,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260970935] [2020-10-28 10:53:40,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:53:40,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:53:40,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:53:40,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:53:40,788 INFO L87 Difference]: Start difference. First operand 16593 states and 27857 transitions. Second operand 7 states. [2020-10-28 10:54:14,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:54:14,187 INFO L93 Difference]: Finished difference Result 50020 states and 87598 transitions. [2020-10-28 10:54:14,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:54:14,188 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1714 [2020-10-28 10:54:14,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:54:14,356 INFO L225 Difference]: With dead ends: 50020 [2020-10-28 10:54:14,359 INFO L226 Difference]: Without dead ends: 33433 [2020-10-28 10:54:14,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 10:54:14,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33433 states. [2020-10-28 10:54:15,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33433 to 33048. [2020-10-28 10:54:15,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33048 states. [2020-10-28 10:54:15,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33048 states to 33048 states and 49013 transitions. [2020-10-28 10:54:15,425 INFO L78 Accepts]: Start accepts. Automaton has 33048 states and 49013 transitions. Word has length 1714 [2020-10-28 10:54:15,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:54:15,426 INFO L481 AbstractCegarLoop]: Abstraction has 33048 states and 49013 transitions. [2020-10-28 10:54:15,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:54:15,426 INFO L276 IsEmpty]: Start isEmpty. Operand 33048 states and 49013 transitions. [2020-10-28 10:54:15,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1731 [2020-10-28 10:54:15,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:54:15,870 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:54:15,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 10:54:15,871 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:54:15,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:54:15,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1626122080, now seen corresponding path program 1 times [2020-10-28 10:54:15,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:54:15,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057973589] [2020-10-28 10:54:15,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:54:16,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:54:16,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:54:16,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:54:21,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:54:21,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1756 [2020-10-28 10:54:21,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:54:21,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5147 [2020-10-28 10:54:21,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:54:21,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:54:21,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:54:21,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:54:21,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 10:54:21,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:54:21,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:54:21,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:54:21,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:54:21,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:54:21,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:54:21,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:54:21,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:54:21,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:54:21,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:54:21,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:54:21,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:54:21,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:54:21,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:54:21,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:54:21,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:54:21,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:54:21,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:54:21,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 10:54:21,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:54:21,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 10:54:21,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:54:21,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:54:21,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:54:21,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:54:21,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 10:54:21,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:54:23,276 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:54:23,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057973589] [2020-10-28 10:54:23,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:54:23,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:54:23,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758005004] [2020-10-28 10:54:23,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:54:23,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:54:23,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:54:23,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:54:23,285 INFO L87 Difference]: Start difference. First operand 33048 states and 49013 transitions. Second operand 7 states. [2020-10-28 10:54:59,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:54:59,141 INFO L93 Difference]: Finished difference Result 99792 states and 160196 transitions. [2020-10-28 10:54:59,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:54:59,142 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1730 [2020-10-28 10:54:59,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:54:59,425 INFO L225 Difference]: With dead ends: 99792 [2020-10-28 10:54:59,425 INFO L226 Difference]: Without dead ends: 66750 [2020-10-28 10:54:59,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:54:59,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66750 states. [2020-10-28 10:55:01,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66750 to 66201. [2020-10-28 10:55:01,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66201 states. [2020-10-28 10:55:01,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66201 states to 66201 states and 97408 transitions. [2020-10-28 10:55:01,778 INFO L78 Accepts]: Start accepts. Automaton has 66201 states and 97408 transitions. Word has length 1730 [2020-10-28 10:55:01,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:55:01,779 INFO L481 AbstractCegarLoop]: Abstraction has 66201 states and 97408 transitions. [2020-10-28 10:55:01,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:55:01,779 INFO L276 IsEmpty]: Start isEmpty. Operand 66201 states and 97408 transitions. [2020-10-28 10:55:02,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1762 [2020-10-28 10:55:02,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:55:02,622 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:55:02,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 10:55:02,622 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:55:02,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:55:02,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1705795641, now seen corresponding path program 1 times [2020-10-28 10:55:02,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:55:02,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137367533] [2020-10-28 10:55:02,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:55:02,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:55:02,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:55:02,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:55:07,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:55:07,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1789 [2020-10-28 10:55:07,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:55:07,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5088 [2020-10-28 10:55:07,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:55:07,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:55:07,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:55:07,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:55:07,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 10:55:07,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:55:08,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:55:08,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:55:08,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:55:08,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:55:08,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:55:08,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:55:08,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 10:55:08,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:55:08,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:55:08,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:55:08,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:55:08,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:55:08,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:55:08,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:55:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:55:08,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:55:08,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:55:08,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-28 10:55:08,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:55:08,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 10:55:08,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:55:08,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:55:08,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:55:08,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:55:08,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 10:55:08,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:55:08,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 10:55:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:55:08,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:55:08,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:55:08,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 10:55:08,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:55:08,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 10:55:08,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:55:08,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:55:08,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:55:08,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 10:55:08,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:55:08,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:55:09,917 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 52 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 10:55:09,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137367533] [2020-10-28 10:55:09,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:55:09,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 10:55:09,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048990384] [2020-10-28 10:55:09,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:55:09,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:55:09,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:55:09,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:55:09,922 INFO L87 Difference]: Start difference. First operand 66201 states and 97408 transitions. Second operand 8 states.