/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:47:17,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:47:17,757 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:47:17,779 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:47:17,780 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:47:17,781 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:47:17,782 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:47:17,784 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:47:17,785 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:47:17,786 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:47:17,787 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:47:17,788 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:47:17,789 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:47:17,790 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:47:17,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:47:17,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:47:17,798 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:47:17,799 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:47:17,801 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:47:17,804 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:47:17,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:47:17,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:47:17,809 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:47:17,813 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:47:17,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:47:17,819 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:47:17,819 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:47:17,820 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:47:17,823 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:47:17,825 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:47:17,825 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:47:17,826 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:47:17,827 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:47:17,827 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:47:17,828 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:47:17,828 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:47:17,830 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:47:17,830 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:47:17,830 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:47:17,832 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:47:17,833 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:47:17,834 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 [2020-10-14 19:47:17,884 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:47:17,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:47:17,886 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:47:17,886 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:47:17,886 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:47:17,887 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:47:17,887 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:47:17,887 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:47:17,887 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:47:17,887 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:47:17,888 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:47:17,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:47:17,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:47:17,889 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:47:17,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:47:17,890 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:47:17,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:47:17,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:47:17,891 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:47:17,891 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:47:17,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:47:17,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:47:17,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:47:17,892 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:47:17,892 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:47:17,892 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:47:17,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:47:17,893 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:47:17,893 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:47:17,893 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 19:47:18,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:47:18,210 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:47:18,213 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:47:18,215 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:47:18,215 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:47:18,216 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label51.c [2020-10-14 19:47:18,289 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f5bc6216/94a8f14e5915430fad1d469fa3f54026/FLAG14698d57a [2020-10-14 19:47:19,226 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:47:19,226 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label51.c [2020-10-14 19:47:19,280 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f5bc6216/94a8f14e5915430fad1d469fa3f54026/FLAG14698d57a [2020-10-14 19:47:19,623 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f5bc6216/94a8f14e5915430fad1d469fa3f54026 [2020-10-14 19:47:19,631 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:47:19,632 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:47:19,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:47:19,634 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:47:19,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:47:19,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:47:19" (1/1) ... [2020-10-14 19:47:19,642 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fe4d0ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:19, skipping insertion in model container [2020-10-14 19:47:19,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:47:19" (1/1) ... [2020-10-14 19:47:19,650 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:47:19,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:47:22,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:47:22,191 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:47:23,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:47:23,330 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:47:23,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:23 WrapperNode [2020-10-14 19:47:23,331 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:47:23,332 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:47:23,332 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:47:23,332 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:47:23,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:23" (1/1) ... [2020-10-14 19:47:23,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:23" (1/1) ... [2020-10-14 19:47:23,432 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:23" (1/1) ... [2020-10-14 19:47:23,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:23" (1/1) ... [2020-10-14 19:47:23,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:23" (1/1) ... [2020-10-14 19:47:23,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:23" (1/1) ... [2020-10-14 19:47:24,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:23" (1/1) ... [2020-10-14 19:47:24,100 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:47:24,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:47:24,101 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:47:24,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:47:24,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:23" (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 [2020-10-14 19:47:24,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:47:24,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:47:24,198 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:47:24,199 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 19:47:24,199 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 19:47:24,199 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 19:47:24,199 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 19:47:24,200 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 19:47:24,200 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-14 19:47:24,200 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-14 19:47:24,200 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:47:24,201 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:47:24,201 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 19:47:24,201 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 19:47:24,201 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 19:47:24,202 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 19:47:24,202 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 19:47:24,202 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-14 19:47:24,202 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-14 19:47:24,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:47:24,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:47:24,203 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:47:24,204 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:47:24,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:47:24,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 19:47:32,926 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 19:47:32,926 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 19:47:32,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:47:32 BoogieIcfgContainer [2020-10-14 19:47:32,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 19:47:32,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 19:47:32,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 19:47:32,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 19:47:32,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:47:19" (1/3) ... [2020-10-14 19:47:32,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7661ece2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:47:32, skipping insertion in model container [2020-10-14 19:47:32,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:23" (2/3) ... [2020-10-14 19:47:32,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7661ece2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:47:32, skipping insertion in model container [2020-10-14 19:47:32,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:47:32" (3/3) ... [2020-10-14 19:47:32,957 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem05_label51.c [2020-10-14 19:47:32,968 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 19:47:32,980 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 19:47:32,994 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 19:47:33,028 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 19:47:33,028 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 19:47:33,028 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 19:47:33,029 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 19:47:33,029 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 19:47:33,029 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 19:47:33,029 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 19:47:33,029 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 19:47:33,086 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states. [2020-10-14 19:47:33,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1660 [2020-10-14 19:47:33,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:47:33,222 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] [2020-10-14 19:47:33,222 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:47:33,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:47:33,229 INFO L82 PathProgramCache]: Analyzing trace with hash 74035648, now seen corresponding path program 1 times [2020-10-14 19:47:33,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:47:33,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795528449] [2020-10-14 19:47:33,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:47:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:47:34,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:47:39,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:47:39,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1681 [2020-10-14 19:47:39,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:47:39,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5117 [2020-10-14 19:47:39,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:47:39,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:47:39,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 19:47:39,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:47:39,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1675 [2020-10-14 19:47:39,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 19:47:41,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:47:41,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:47:41,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:47:41,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:47:41,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:47:41,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:47:41,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 19:47:41,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:47:41,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:47:41,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:47:41,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:47:41,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:47:41,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:47:43,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:47:43,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795528449] [2020-10-14 19:47:43,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:47:43,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 19:47:43,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677655544] [2020-10-14 19:47:43,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 19:47:43,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:47:43,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 19:47:43,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 19:47:43,459 INFO L87 Difference]: Start difference. First operand 2222 states. Second operand 4 states. [2020-10-14 19:48:00,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:48:00,059 INFO L93 Difference]: Finished difference Result 6360 states and 11961 transitions. [2020-10-14 19:48:00,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:48:00,062 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1659 [2020-10-14 19:48:00,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:48:00,118 INFO L225 Difference]: With dead ends: 6360 [2020-10-14 19:48:00,119 INFO L226 Difference]: Without dead ends: 4074 [2020-10-14 19:48:00,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:48:00,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4074 states. [2020-10-14 19:48:00,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4074 to 4004. [2020-10-14 19:48:00,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4004 states. [2020-10-14 19:48:00,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4004 states to 4004 states and 6504 transitions. [2020-10-14 19:48:00,376 INFO L78 Accepts]: Start accepts. Automaton has 4004 states and 6504 transitions. Word has length 1659 [2020-10-14 19:48:00,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:48:00,383 INFO L479 AbstractCegarLoop]: Abstraction has 4004 states and 6504 transitions. [2020-10-14 19:48:00,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 19:48:00,383 INFO L276 IsEmpty]: Start isEmpty. Operand 4004 states and 6504 transitions. [2020-10-14 19:48:00,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1671 [2020-10-14 19:48:00,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:48:00,483 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:48:00,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 19:48:00,484 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:48:00,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:48:00,486 INFO L82 PathProgramCache]: Analyzing trace with hash -170252657, now seen corresponding path program 1 times [2020-10-14 19:48:00,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:48:00,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340970929] [2020-10-14 19:48:00,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:48:00,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:48:01,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:48:02,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:48:06,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:48:06,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1694 [2020-10-14 19:48:06,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:48:06,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5170 [2020-10-14 19:48:06,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:48:06,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:48:06,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 19:48:06,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 19:48:06,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1672 [2020-10-14 19:48:06,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:48:07,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:48:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:48:07,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:48:07,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:48:07,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:48:07,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:48:07,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:48:07,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:48:07,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:48:07,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:48:07,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:48:07,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:48:07,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 19:48:07,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:48:07,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:48:07,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:48:07,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:48:07,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:48:07,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:48:07,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 19:48:07,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:48:07,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:48:07,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:48:07,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:48:07,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 19:48:07,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:48:10,128 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:48:10,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340970929] [2020-10-14 19:48:10,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:48:10,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:48:10,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163367354] [2020-10-14 19:48:10,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:48:10,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:48:10,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:48:10,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:48:10,136 INFO L87 Difference]: Start difference. First operand 4004 states and 6504 transitions. Second operand 5 states. [2020-10-14 19:48:30,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:48:30,527 INFO L93 Difference]: Finished difference Result 9919 states and 16676 transitions. [2020-10-14 19:48:30,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:48:30,530 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1670 [2020-10-14 19:48:30,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:48:30,562 INFO L225 Difference]: With dead ends: 9919 [2020-10-14 19:48:30,562 INFO L226 Difference]: Without dead ends: 5921 [2020-10-14 19:48:30,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:48:30,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5921 states. [2020-10-14 19:48:30,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5921 to 5816. [2020-10-14 19:48:30,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5816 states. [2020-10-14 19:48:30,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5816 states to 5816 states and 8987 transitions. [2020-10-14 19:48:30,726 INFO L78 Accepts]: Start accepts. Automaton has 5816 states and 8987 transitions. Word has length 1670 [2020-10-14 19:48:30,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:48:30,729 INFO L479 AbstractCegarLoop]: Abstraction has 5816 states and 8987 transitions. [2020-10-14 19:48:30,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:48:30,729 INFO L276 IsEmpty]: Start isEmpty. Operand 5816 states and 8987 transitions. [2020-10-14 19:48:30,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1672 [2020-10-14 19:48:30,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:48:30,885 INFO L422 BasicCegarLoop]: trace histogram [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, 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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] [2020-10-14 19:48:30,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 19:48:30,886 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:48:30,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:48:30,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1571977732, now seen corresponding path program 1 times [2020-10-14 19:48:30,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:48:30,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272205975] [2020-10-14 19:48:30,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:48:31,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:48:31,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:48:31,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:48:36,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:48:36,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1695 [2020-10-14 19:48:36,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:48:36,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5181 [2020-10-14 19:48:36,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:48:36,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:48:36,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 19:48:36,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 19:48:36,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1273 [2020-10-14 19:48:36,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:48:40,978 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 35 [2020-10-14 19:48:41,447 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 37 [2020-10-14 19:48:41,582 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 37 [2020-10-14 19:48:41,889 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 41 [2020-10-14 19:48:42,052 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 34 [2020-10-14 19:48:42,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:48:42,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:48:42,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:48:42,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:48:42,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:48:42,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:48:42,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:48:42,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:48:42,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:48:42,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:48:42,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:48:42,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:48:42,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:48:42,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:48:42,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:48:42,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:48:43,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:48:43,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:48:43,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:48:43,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 19:48:43,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:48:43,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:48:43,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:48:43,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:48:43,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 19:48:43,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:48:59,257 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:48:59,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272205975] [2020-10-14 19:48:59,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:48:59,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 19:48:59,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424423820] [2020-10-14 19:48:59,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 19:48:59,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:48:59,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 19:48:59,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2020-10-14 19:48:59,262 INFO L87 Difference]: Start difference. First operand 5816 states and 8987 transitions. Second operand 23 states. [2020-10-14 19:49:06,865 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2020-10-14 19:49:10,776 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2020-10-14 19:49:14,554 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-10-14 19:50:06,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:50:06,610 INFO L93 Difference]: Finished difference Result 12964 states and 20604 transitions. [2020-10-14 19:50:06,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 19:50:06,612 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 1671 [2020-10-14 19:50:06,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:50:06,648 INFO L225 Difference]: With dead ends: 12964 [2020-10-14 19:50:06,648 INFO L226 Difference]: Without dead ends: 7154 [2020-10-14 19:50:06,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=207, Invalid=1353, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 19:50:06,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7154 states. [2020-10-14 19:50:06,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7154 to 7109. [2020-10-14 19:50:06,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7109 states. [2020-10-14 19:50:06,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7109 states to 7109 states and 10306 transitions. [2020-10-14 19:50:06,840 INFO L78 Accepts]: Start accepts. Automaton has 7109 states and 10306 transitions. Word has length 1671 [2020-10-14 19:50:06,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:50:06,842 INFO L479 AbstractCegarLoop]: Abstraction has 7109 states and 10306 transitions. [2020-10-14 19:50:06,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 19:50:06,842 INFO L276 IsEmpty]: Start isEmpty. Operand 7109 states and 10306 transitions. [2020-10-14 19:50:06,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1686 [2020-10-14 19:50:06,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:50:06,890 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2020-10-14 19:50:06,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 19:50:06,890 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:50:06,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:50:06,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1591295557, now seen corresponding path program 1 times [2020-10-14 19:50:06,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:50:06,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852837454] [2020-10-14 19:50:06,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:50:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:50:07,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:50:07,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:50:12,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:50:12,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1709 [2020-10-14 19:50:12,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:50:12,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-14 19:50:12,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:50:12,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:50:12,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 19:50:12,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 19:50:12,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1279 [2020-10-14 19:50:12,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:50:16,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:50:16,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:50:16,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:50:16,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:50:16,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:50:16,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:50:16,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:50:16,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:50:16,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:50:16,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:50:16,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:50:16,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:50:16,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:50:16,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:50:16,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:50:16,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:50:16,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:50:16,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 19:50:16,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:50:16,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 19:50:16,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:50:16,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:50:16,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 19:50:16,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:50:16,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 19:50:16,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:50:33,692 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:50:33,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852837454] [2020-10-14 19:50:33,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:50:33,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 19:50:33,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139038777] [2020-10-14 19:50:33,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 19:50:33,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:50:33,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 19:50:33,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2020-10-14 19:50:33,697 INFO L87 Difference]: Start difference. First operand 7109 states and 10306 transitions. Second operand 24 states. [2020-10-14 19:50:34,404 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2020-10-14 19:50:34,674 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2020-10-14 19:50:40,956 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2020-10-14 19:50:42,280 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2020-10-14 19:50:44,663 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2020-10-14 19:50:44,955 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2020-10-14 19:50:55,448 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2020-10-14 19:50:55,744 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2020-10-14 19:51:05,629 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2020-10-14 19:51:05,919 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77