/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 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=BIGGEST --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 -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 11:45:34,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 11:45:34,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 11:45:34,688 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 11:45:34,689 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 11:45:34,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 11:45:34,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 11:45:34,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 11:45:34,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 11:45:34,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 11:45:34,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 11:45:34,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 11:45:34,710 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 11:45:34,712 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 11:45:34,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 11:45:34,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 11:45:34,718 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 11:45:34,719 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 11:45:34,720 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 11:45:34,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 11:45:34,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 11:45:34,731 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 11:45:34,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 11:45:34,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 11:45:34,745 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 11:45:34,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 11:45:34,751 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 11:45:34,752 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 11:45:34,754 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 11:45:34,755 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 11:45:34,755 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 11:45:34,756 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 11:45:34,757 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 11:45:34,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 11:45:34,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 11:45:34,762 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 11:45:34,762 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 11:45:34,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 11:45:34,763 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 11:45:34,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 11:45:34,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 11:45:34,770 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 [2020-10-12 11:45:34,810 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 11:45:34,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 11:45:34,812 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 11:45:34,812 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 11:45:34,812 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 11:45:34,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 11:45:34,813 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 11:45:34,813 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 11:45:34,814 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 11:45:34,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 11:45:34,815 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 11:45:34,815 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 11:45:34,815 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 11:45:34,816 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 11:45:34,816 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 11:45:34,816 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 11:45:34,816 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 11:45:34,816 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 11:45:34,817 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 11:45:34,817 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 11:45:34,817 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 11:45:34,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:45:34,818 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 11:45:34,818 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 11:45:34,818 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 11:45:34,818 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 11:45:34,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 11:45:34,819 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 11:45:34,819 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 11:45:34,819 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 -> 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 11:45:35,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 11:45:35,167 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 11:45:35,170 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 11:45:35,171 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 11:45:35,172 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 11:45:35,172 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label00.c [2020-10-12 11:45:35,236 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dabe95bb0/8091b6c4ca974b03a1c4b5b91f3f029f/FLAG935406af9 [2020-10-12 11:45:36,206 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 11:45:36,207 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label00.c [2020-10-12 11:45:36,269 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dabe95bb0/8091b6c4ca974b03a1c4b5b91f3f029f/FLAG935406af9 [2020-10-12 11:45:36,522 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dabe95bb0/8091b6c4ca974b03a1c4b5b91f3f029f [2020-10-12 11:45:36,535 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 11:45:36,537 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 11:45:36,542 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 11:45:36,542 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 11:45:36,546 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 11:45:36,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:45:36" (1/1) ... [2020-10-12 11:45:36,551 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35692340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:36, skipping insertion in model container [2020-10-12 11:45:36,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:45:36" (1/1) ... [2020-10-12 11:45:36,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 11:45:36,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 11:45:39,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:45:39,518 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 11:45:40,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:45:40,956 INFO L208 MainTranslator]: Completed translation [2020-10-12 11:45:40,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:40 WrapperNode [2020-10-12 11:45:40,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 11:45:40,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 11:45:40,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 11:45:40,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 11:45:40,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:40" (1/1) ... [2020-10-12 11:45:40,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:40" (1/1) ... [2020-10-12 11:45:41,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:40" (1/1) ... [2020-10-12 11:45:41,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:40" (1/1) ... [2020-10-12 11:45:41,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:40" (1/1) ... [2020-10-12 11:45:41,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:40" (1/1) ... [2020-10-12 11:45:41,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:40" (1/1) ... [2020-10-12 11:45:41,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 11:45:41,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 11:45:41,591 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 11:45:41,591 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 11:45:41,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:40" (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 [2020-10-12 11:45:41,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 11:45:41,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 11:45:41,677 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 11:45:41,677 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 11:45:41,677 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 11:45:41,677 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 11:45:41,677 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-12 11:45:41,677 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-12 11:45:41,678 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-12 11:45:41,678 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-12 11:45:41,678 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 11:45:41,678 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 11:45:41,679 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 11:45:41,679 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 11:45:41,679 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 11:45:41,679 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-12 11:45:41,679 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-12 11:45:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-12 11:45:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-12 11:45:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 11:45:41,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 11:45:41,681 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 11:45:41,681 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 11:45:41,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 11:45:41,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 11:45:50,155 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 11:45:50,155 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 11:45:50,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:45:50 BoogieIcfgContainer [2020-10-12 11:45:50,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 11:45:50,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 11:45:50,176 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 11:45:50,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 11:45:50,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:45:36" (1/3) ... [2020-10-12 11:45:50,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca7aba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:45:50, skipping insertion in model container [2020-10-12 11:45:50,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:45:40" (2/3) ... [2020-10-12 11:45:50,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca7aba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:45:50, skipping insertion in model container [2020-10-12 11:45:50,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:45:50" (3/3) ... [2020-10-12 11:45:50,186 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem05_label00.c [2020-10-12 11:45:50,196 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 11:45:50,206 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 11:45:50,222 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 11:45:50,255 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 11:45:50,256 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 11:45:50,256 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 11:45:50,256 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 11:45:50,256 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 11:45:50,256 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 11:45:50,256 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 11:45:50,257 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 11:45:50,305 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states. [2020-10-12 11:45:50,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1653 [2020-10-12 11:45:50,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:45:50,406 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] [2020-10-12 11:45:50,406 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:45:50,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:45:50,414 INFO L82 PathProgramCache]: Analyzing trace with hash -555900871, now seen corresponding path program 1 times [2020-10-12 11:45:50,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:45:50,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76449234] [2020-10-12 11:45:50,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:45:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:45:52,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:45:56,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:45:56,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1674 [2020-10-12 11:45:56,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:45:56,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5139 [2020-10-12 11:45:56,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:45:56,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 11:45:56,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:45:56,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1668 [2020-10-12 11:45:56,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 11:45:58,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:45:58,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:45:58,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:45:58,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:45:58,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:45:58,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:45:58,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 11:45:58,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:45:58,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:45:58,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:45:58,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:45:58,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:46:01,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:46:01,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76449234] [2020-10-12 11:46:01,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 11:46:01,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 11:46:01,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308284563] [2020-10-12 11:46:01,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 11:46:01,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:46:01,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 11:46:01,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 11:46:01,072 INFO L87 Difference]: Start difference. First operand 2222 states. Second operand 4 states. [2020-10-12 11:46:17,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:46:17,579 INFO L93 Difference]: Finished difference Result 6311 states and 11851 transitions. [2020-10-12 11:46:17,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:46:17,581 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1652 [2020-10-12 11:46:17,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:46:17,632 INFO L225 Difference]: With dead ends: 6311 [2020-10-12 11:46:17,632 INFO L226 Difference]: Without dead ends: 4025 [2020-10-12 11:46:17,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 11:46:17,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4025 states. [2020-10-12 11:46:17,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4025 to 3996. [2020-10-12 11:46:17,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3996 states. [2020-10-12 11:46:17,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3996 states to 3996 states and 6427 transitions. [2020-10-12 11:46:17,881 INFO L78 Accepts]: Start accepts. Automaton has 3996 states and 6427 transitions. Word has length 1652 [2020-10-12 11:46:17,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:46:17,888 INFO L479 AbstractCegarLoop]: Abstraction has 3996 states and 6427 transitions. [2020-10-12 11:46:17,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 11:46:17,889 INFO L276 IsEmpty]: Start isEmpty. Operand 3996 states and 6427 transitions. [2020-10-12 11:46:17,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1662 [2020-10-12 11:46:17,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:46:17,994 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] [2020-10-12 11:46:17,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 11:46:17,995 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:46:17,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:46:17,996 INFO L82 PathProgramCache]: Analyzing trace with hash 844890222, now seen corresponding path program 1 times [2020-10-12 11:46:17,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:46:17,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035817233] [2020-10-12 11:46:17,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:46:18,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:46:18,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:46:20,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:46:23,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:46:23,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1685 [2020-10-12 11:46:23,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:46:23,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5096 [2020-10-12 11:46:23,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:46:23,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 11:46:23,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 11:46:23,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1665 [2020-10-12 11:46:23,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:46:24,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:46:24,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:46:24,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:46:24,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:46:24,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:46:24,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:46:24,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:46:24,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:46:24,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:46:24,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:46:24,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:46:24,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:46:24,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:46:24,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:46:24,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:46:24,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:46:24,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 11:46:24,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:46:24,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 11:46:24,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:46:24,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:46:24,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:46:24,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 11:46:24,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:46:27,201 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:46:27,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035817233] [2020-10-12 11:46:27,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:46:27,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:46:27,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444228960] [2020-10-12 11:46:27,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:46:27,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:46:27,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:46:27,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:46:27,208 INFO L87 Difference]: Start difference. First operand 3996 states and 6427 transitions. Second operand 6 states. [2020-10-12 11:46:55,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:46:55,564 INFO L93 Difference]: Finished difference Result 15224 states and 24991 transitions. [2020-10-12 11:46:55,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 11:46:55,565 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1661 [2020-10-12 11:46:55,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:46:55,628 INFO L225 Difference]: With dead ends: 15224 [2020-10-12 11:46:55,628 INFO L226 Difference]: Without dead ends: 11234 [2020-10-12 11:46:55,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:46:55,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11234 states. [2020-10-12 11:46:55,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11234 to 11079. [2020-10-12 11:46:55,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11079 states. [2020-10-12 11:46:55,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11079 states to 11079 states and 17677 transitions. [2020-10-12 11:46:55,945 INFO L78 Accepts]: Start accepts. Automaton has 11079 states and 17677 transitions. Word has length 1661 [2020-10-12 11:46:55,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:46:55,948 INFO L479 AbstractCegarLoop]: Abstraction has 11079 states and 17677 transitions. [2020-10-12 11:46:55,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 11:46:55,948 INFO L276 IsEmpty]: Start isEmpty. Operand 11079 states and 17677 transitions. [2020-10-12 11:46:56,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1670 [2020-10-12 11:46:56,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:46:56,007 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 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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] [2020-10-12 11:46:56,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 11:46:56,008 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:46:56,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:46:56,009 INFO L82 PathProgramCache]: Analyzing trace with hash -501837198, now seen corresponding path program 1 times [2020-10-12 11:46:56,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:46:56,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127717291] [2020-10-12 11:46:56,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:46:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:46:56,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:46:56,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:47:01,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:47:01,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1695 [2020-10-12 11:47:01,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:47:01,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5114 [2020-10-12 11:47:01,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:47:01,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:47:01,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:47:01,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 11:47:01,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:47:01,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:47:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:47:01,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:47:01,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:47:01,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:47:01,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:47:01,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 11:47:01,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:47:01,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:47:01,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:47:01,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:47:01,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:47:01,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:47:01,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:47:01,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:47:01,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:47:01,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 11:47:01,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:47:01,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 11:47:01,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:47:01,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:47:01,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:47:01,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 11:47:01,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:47:01,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-12 11:47:01,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:47:01,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:47:01,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:47:01,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 11:47:01,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:47:01,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:47:01,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:47:01,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:47:01,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 11:47:01,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:47:01,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:47:02,974 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 11:47:02,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127717291] [2020-10-12 11:47:02,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:47:02,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:47:02,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091007842] [2020-10-12 11:47:02,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:47:02,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:47:02,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:47:02,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:47:02,979 INFO L87 Difference]: Start difference. First operand 11079 states and 17677 transitions. Second operand 7 states. [2020-10-12 11:47:27,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:47:27,075 INFO L93 Difference]: Finished difference Result 33436 states and 55367 transitions. [2020-10-12 11:47:27,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 11:47:27,077 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1669 [2020-10-12 11:47:27,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:47:27,169 INFO L225 Difference]: With dead ends: 33436 [2020-10-12 11:47:27,169 INFO L226 Difference]: Without dead ends: 22363 [2020-10-12 11:47:27,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:47:27,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22363 states. [2020-10-12 11:47:27,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22363 to 21941. [2020-10-12 11:47:27,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21941 states. [2020-10-12 11:47:27,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21941 states to 21941 states and 32556 transitions. [2020-10-12 11:47:27,987 INFO L78 Accepts]: Start accepts. Automaton has 21941 states and 32556 transitions. Word has length 1669 [2020-10-12 11:47:27,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:47:27,988 INFO L479 AbstractCegarLoop]: Abstraction has 21941 states and 32556 transitions. [2020-10-12 11:47:27,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:47:27,989 INFO L276 IsEmpty]: Start isEmpty. Operand 21941 states and 32556 transitions. [2020-10-12 11:47:28,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1672 [2020-10-12 11:47:28,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:47:28,099 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2020-10-12 11:47:28,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 11:47:28,099 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:47:28,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:47:28,100 INFO L82 PathProgramCache]: Analyzing trace with hash -848602034, now seen corresponding path program 1 times [2020-10-12 11:47:28,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:47:28,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186454965] [2020-10-12 11:47:28,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:47:28,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:47:28,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:47:28,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:47:30,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:47:33,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:47:33,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1697 [2020-10-12 11:47:33,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:47:33,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5295 [2020-10-12 11:47:33,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:47:33,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:47:33,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:47:33,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 11:47:33,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:47:34,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:47:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:47:34,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:47:34,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:47:34,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:47:34,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:47:34,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 11:47:34,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:47:34,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:47:34,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:47:34,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:47:34,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:47:34,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:47:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:47:34,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:47:34,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:47:34,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:47:34,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:47:34,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:47:34,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 11:47:34,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:47:34,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:47:34,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:47:34,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:47:34,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:47:34,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:47:34,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:47:34,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:47:34,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:47:34,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 11:47:34,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:47:34,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:47:34,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:47:34,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:47:34,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:47:34,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 11:47:34,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:47:35,210 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 11:47:35,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186454965] [2020-10-12 11:47:35,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:47:35,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:47:35,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32090889] [2020-10-12 11:47:35,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:47:35,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:47:35,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:47:35,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:47:35,214 INFO L87 Difference]: Start difference. First operand 21941 states and 32556 transitions. Second operand 7 states. [2020-10-12 11:47:59,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:47:59,623 INFO L93 Difference]: Finished difference Result 55091 states and 87155 transitions. [2020-10-12 11:47:59,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 11:47:59,624 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1671 [2020-10-12 11:47:59,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:47:59,764 INFO L225 Difference]: With dead ends: 55091 [2020-10-12 11:47:59,764 INFO L226 Difference]: Without dead ends: 33156 [2020-10-12 11:47:59,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:47:59,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33156 states. [2020-10-12 11:48:00,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33156 to 32790. [2020-10-12 11:48:00,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32790 states. [2020-10-12 11:48:00,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32790 states to 32790 states and 48948 transitions. [2020-10-12 11:48:00,666 INFO L78 Accepts]: Start accepts. Automaton has 32790 states and 48948 transitions. Word has length 1671 [2020-10-12 11:48:00,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:48:00,667 INFO L479 AbstractCegarLoop]: Abstraction has 32790 states and 48948 transitions. [2020-10-12 11:48:00,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:48:00,667 INFO L276 IsEmpty]: Start isEmpty. Operand 32790 states and 48948 transitions. [2020-10-12 11:48:00,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1723 [2020-10-12 11:48:00,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:48:00,786 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2020-10-12 11:48:00,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 11:48:00,786 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:48:00,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:48:00,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1140848903, now seen corresponding path program 1 times [2020-10-12 11:48:00,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:48:00,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673907165] [2020-10-12 11:48:00,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:48:00,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:48:01,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:01,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:06,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:48:06,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1748 [2020-10-12 11:48:06,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:48:06,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-12 11:48:06,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:48:06,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:48:06,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:48:06,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 11:48:06,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:48:06,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:48:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:48:06,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:06,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:48:06,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:48:06,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:48:06,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:48:06,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:48:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:48:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:48:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:48:06,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:48:06,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:48:06,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:48:06,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:06,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:48:06,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-12 11:48:06,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:48:06,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 11:48:06,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:48:06,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:48:06,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:48:06,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 11:48:06,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:48:06,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 11:48:06,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:48:06,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:06,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:48:06,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 11:48:06,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:48:06,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 11:48:06,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:48:06,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:48:06,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-12 11:48:06,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:48:06,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:48:07,686 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 64 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 11:48:07,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673907165] [2020-10-12 11:48:07,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:48:07,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:48:07,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173890996] [2020-10-12 11:48:07,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:48:07,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:48:07,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:48:07,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:48:07,690 INFO L87 Difference]: Start difference. First operand 32790 states and 48948 transitions. Second operand 7 states. [2020-10-12 11:48:35,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:48:35,249 INFO L93 Difference]: Finished difference Result 78421 states and 127455 transitions. [2020-10-12 11:48:35,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 11:48:35,250 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1722 [2020-10-12 11:48:35,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:48:35,434 INFO L225 Difference]: With dead ends: 78421 [2020-10-12 11:48:35,434 INFO L226 Difference]: Without dead ends: 45637 [2020-10-12 11:48:35,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-12 11:48:35,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45637 states. [2020-10-12 11:48:36,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45637 to 44767. [2020-10-12 11:48:36,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44767 states. [2020-10-12 11:48:36,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44767 states to 44767 states and 65330 transitions. [2020-10-12 11:48:36,713 INFO L78 Accepts]: Start accepts. Automaton has 44767 states and 65330 transitions. Word has length 1722 [2020-10-12 11:48:36,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:48:36,714 INFO L479 AbstractCegarLoop]: Abstraction has 44767 states and 65330 transitions. [2020-10-12 11:48:36,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:48:36,714 INFO L276 IsEmpty]: Start isEmpty. Operand 44767 states and 65330 transitions. [2020-10-12 11:48:36,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1799 [2020-10-12 11:48:36,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:48:36,865 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:48:36,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 11:48:36,865 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:48:36,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:48:36,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1993727423, now seen corresponding path program 1 times [2020-10-12 11:48:36,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:48:36,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028135296] [2020-10-12 11:48:36,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:48:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:48:37,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:37,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:37,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:42,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:48:42,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1824 [2020-10-12 11:48:42,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:48:42,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 11:48:42,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:48:42,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 11:48:42,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-12 11:48:42,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 773 [2020-10-12 11:48:42,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:48:45,364 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2020-10-12 11:48:45,511 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2020-10-12 11:48:45,657 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2020-10-12 11:48:45,870 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 42 [2020-10-12 11:48:46,287 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 38 [2020-10-12 11:48:46,658 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 50 [2020-10-12 11:48:46,997 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 49 [2020-10-12 11:48:47,224 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 29 [2020-10-12 11:48:47,615 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 29 [2020-10-12 11:48:47,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:48:47,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:48:47,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:47,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:48:47,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:48:47,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:48:47,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:48:47,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:48:47,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:48:47,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:48:47,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:48:47,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:48:47,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:48:47,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:48:47,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:47,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:48:47,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 11:48:47,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:48:47,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 11:48:47,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:48:47,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:48:47,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:48:47,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:48:47,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:48:47,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 11:48:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:48:47,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:48:48,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:48:48,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 11:48:48,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:48:48,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-12 11:48:48,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:48:48,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 11:48:48,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:48:48,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 11:48:48,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:49:01,648 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-12 11:49:01,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028135296] [2020-10-12 11:49:01,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:49:01,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 11:49:01,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723192026] [2020-10-12 11:49:01,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 11:49:01,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:49:01,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 11:49:01,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-10-12 11:49:01,652 INFO L87 Difference]: Start difference. First operand 44767 states and 65330 transitions. Second operand 20 states. [2020-10-12 11:49:04,162 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-12 11:49:04,341 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 83