/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/Problem06_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 12:03:35,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 12:03:35,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 12:03:35,829 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 12:03:35,829 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 12:03:35,837 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 12:03:35,839 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 12:03:35,842 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 12:03:35,845 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 12:03:35,848 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 12:03:35,849 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 12:03:35,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 12:03:35,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 12:03:35,853 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 12:03:35,856 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 12:03:35,857 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 12:03:35,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 12:03:35,860 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 12:03:35,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 12:03:35,871 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 12:03:35,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 12:03:35,874 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 12:03:35,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 12:03:35,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 12:03:35,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 12:03:35,888 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 12:03:35,895 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 12:03:35,896 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 12:03:35,897 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 12:03:35,898 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 12:03:35,898 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 12:03:35,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 12:03:35,899 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 12:03:35,900 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 12:03:35,901 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 12:03:35,901 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 12:03:35,902 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 12:03:35,902 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 12:03:35,902 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 12:03:35,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 12:03:35,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 12:03:35,905 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 12:03:35,926 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 12:03:35,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 12:03:35,927 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 12:03:35,927 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 12:03:35,928 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 12:03:35,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 12:03:35,928 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 12:03:35,928 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 12:03:35,928 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 12:03:35,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 12:03:35,929 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 12:03:35,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 12:03:35,929 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 12:03:35,929 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 12:03:35,930 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 12:03:35,930 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 12:03:35,930 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 12:03:35,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 12:03:35,930 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 12:03:35,931 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 12:03:35,931 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 12:03:35,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 12:03:35,931 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 12:03:35,931 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 12:03:35,932 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 12:03:35,932 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 12:03:35,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 12:03:35,932 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 12:03:35,932 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 12:03:35,932 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 12:03:36,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 12:03:36,262 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 12:03:36,265 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 12:03:36,266 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 12:03:36,267 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 12:03:36,268 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label03.c [2020-10-12 12:03:36,326 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09630de49/d263f8afdad7499b8c12d6d3b6bd22fb/FLAGe62ed5578 [2020-10-12 12:03:37,180 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 12:03:37,180 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label03.c [2020-10-12 12:03:37,223 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09630de49/d263f8afdad7499b8c12d6d3b6bd22fb/FLAGe62ed5578 [2020-10-12 12:03:37,669 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09630de49/d263f8afdad7499b8c12d6d3b6bd22fb [2020-10-12 12:03:37,680 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 12:03:37,682 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 12:03:37,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 12:03:37,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 12:03:37,687 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 12:03:37,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:03:37" (1/1) ... [2020-10-12 12:03:37,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d2b9410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:37, skipping insertion in model container [2020-10-12 12:03:37,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:03:37" (1/1) ... [2020-10-12 12:03:37,699 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 12:03:37,979 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 12:03:40,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 12:03:40,113 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 12:03:41,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 12:03:41,245 INFO L208 MainTranslator]: Completed translation [2020-10-12 12:03:41,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:41 WrapperNode [2020-10-12 12:03:41,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 12:03:41,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 12:03:41,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 12:03:41,246 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 12:03:41,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:41" (1/1) ... [2020-10-12 12:03:41,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:41" (1/1) ... [2020-10-12 12:03:41,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:41" (1/1) ... [2020-10-12 12:03:41,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:41" (1/1) ... [2020-10-12 12:03:41,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:41" (1/1) ... [2020-10-12 12:03:41,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:41" (1/1) ... [2020-10-12 12:03:41,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:41" (1/1) ... [2020-10-12 12:03:41,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 12:03:41,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 12:03:41,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 12:03:41,691 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 12:03:41,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:41" (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 12:03:41,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 12:03:41,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 12:03:41,773 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 12:03:41,773 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 12:03:41,773 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 12:03:41,774 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 12:03:41,774 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-12 12:03:41,774 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 12:03:41,774 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 12:03:41,774 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 12:03:41,775 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 12:03:41,775 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 12:03:41,775 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-12 12:03:41,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 12:03:41,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 12:03:41,775 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 12:03:41,776 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 12:03:41,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 12:03:41,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 12:03:48,893 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 12:03:48,893 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 12:03:48,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:03:48 BoogieIcfgContainer [2020-10-12 12:03:48,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 12:03:48,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 12:03:48,910 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 12:03:48,913 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 12:03:48,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:03:37" (1/3) ... [2020-10-12 12:03:48,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@326e3ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:03:48, skipping insertion in model container [2020-10-12 12:03:48,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:03:41" (2/3) ... [2020-10-12 12:03:48,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@326e3ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:03:48, skipping insertion in model container [2020-10-12 12:03:48,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:03:48" (3/3) ... [2020-10-12 12:03:48,916 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label03.c [2020-10-12 12:03:48,927 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 12:03:48,936 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 12:03:48,950 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 12:03:48,981 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 12:03:48,981 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 12:03:48,981 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 12:03:48,981 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 12:03:48,981 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 12:03:48,981 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 12:03:48,982 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 12:03:48,982 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 12:03:49,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-12 12:03:49,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 981 [2020-10-12 12:03:49,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:03:49,076 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:49,077 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:03:49,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:03:49,084 INFO L82 PathProgramCache]: Analyzing trace with hash -2092316825, now seen corresponding path program 1 times [2020-10-12 12:03:49,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:03:49,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405291266] [2020-10-12 12:03:49,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:03:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:03:50,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:03:53,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:03:55,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:03:55,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 996 [2020-10-12 12:03:55,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:03:55,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 12:03:55,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:03:55,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 12:03:55,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:03:55,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-12 12:03:55,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 12:03:58,101 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2020-10-12 12:03:58,466 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 75 [2020-10-12 12:03:58,704 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-12 12:03:58,864 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 69 [2020-10-12 12:03:58,992 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 63 [2020-10-12 12:03:59,142 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 63 [2020-10-12 12:03:59,322 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 63 [2020-10-12 12:03:59,478 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2020-10-12 12:04:00,208 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:04:00,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:04:00,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:04:00,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:04:00,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:04:00,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:04:00,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:04:00,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-12 12:04:00,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:04:00,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:04:00,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:04:00,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:04:00,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:04:10,817 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 12:04:10,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405291266] [2020-10-12 12:04:10,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 12:04:10,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-12 12:04:10,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209719670] [2020-10-12 12:04:10,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 12:04:10,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:04:10,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 12:04:10,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-12 12:04:10,846 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 18 states. [2020-10-12 12:04:11,213 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-12 12:04:11,809 WARN L193 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 159 [2020-10-12 12:04:12,408 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 169 [2020-10-12 12:04:13,104 WARN L193 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 178 [2020-10-12 12:04:17,204 WARN L193 SmtUtils]: Spent 890.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 177 [2020-10-12 12:04:20,430 WARN L193 SmtUtils]: Spent 899.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 175 [2020-10-12 12:04:22,805 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 163 [2020-10-12 12:04:23,414 WARN L193 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 169 [2020-10-12 12:04:24,532 WARN L193 SmtUtils]: Spent 769.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 168 [2020-10-12 12:04:33,640 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 161 [2020-10-12 12:04:34,219 WARN L193 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 166 [2020-10-12 12:04:36,962 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 165 [2020-10-12 12:04:43,889 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 159 [2020-10-12 12:04:44,516 WARN L193 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 163 [2020-10-12 12:04:46,811 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 161 [2020-10-12 12:04:59,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:04:59,408 INFO L93 Difference]: Finished difference Result 3396 states and 6359 transitions. [2020-10-12 12:04:59,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 12:04:59,414 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 980 [2020-10-12 12:04:59,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:04:59,471 INFO L225 Difference]: With dead ends: 3396 [2020-10-12 12:04:59,472 INFO L226 Difference]: Without dead ends: 2019 [2020-10-12 12:04:59,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=151, Invalid=905, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 12:04:59,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2020-10-12 12:04:59,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2019. [2020-10-12 12:04:59,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2020-10-12 12:04:59,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3053 transitions. [2020-10-12 12:04:59,668 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3053 transitions. Word has length 980 [2020-10-12 12:04:59,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:04:59,671 INFO L479 AbstractCegarLoop]: Abstraction has 2019 states and 3053 transitions. [2020-10-12 12:04:59,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 12:04:59,676 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3053 transitions. [2020-10-12 12:04:59,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1051 [2020-10-12 12:04:59,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:04:59,742 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 12:04:59,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 12:04:59,743 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:04:59,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:04:59,743 INFO L82 PathProgramCache]: Analyzing trace with hash 46889914, now seen corresponding path program 1 times [2020-10-12 12:04:59,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:04:59,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299732670] [2020-10-12 12:04:59,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:05:00,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:05:00,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:05:01,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:05:05,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:05:05,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1068 [2020-10-12 12:05:05,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:05:05,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 12:05:05,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:05:05,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 12:05:05,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-12 12:05:05,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 987 [2020-10-12 12:05:05,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:05:06,261 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:05:06,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:05:06,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:05:06,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:05:06,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:05:06,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:05:06,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:05:06,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 12:05:06,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:05:06,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:05:06,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:05:06,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:05:06,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:05:06,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:05:06,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:05:06,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:05:06,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:05:06,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:05:06,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:05:06,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-12 12:05:06,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:05:06,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:05:06,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:05:06,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 12:05:06,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:05:07,391 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 66 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 12:05:07,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299732670] [2020-10-12 12:05:07,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:05:07,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 12:05:07,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433553764] [2020-10-12 12:05:07,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 12:05:07,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:05:07,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 12:05:07,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 12:05:07,397 INFO L87 Difference]: Start difference. First operand 2019 states and 3053 transitions. Second operand 5 states. [2020-10-12 12:05:07,805 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 12:05:21,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:05:21,458 INFO L93 Difference]: Finished difference Result 4397 states and 7435 transitions. [2020-10-12 12:05:21,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 12:05:21,458 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1050 [2020-10-12 12:05:21,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:05:21,478 INFO L225 Difference]: With dead ends: 4397 [2020-10-12 12:05:21,478 INFO L226 Difference]: Without dead ends: 3138 [2020-10-12 12:05:21,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 12:05:21,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3138 states. [2020-10-12 12:05:21,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3138 to 3087. [2020-10-12 12:05:21,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3087 states. [2020-10-12 12:05:21,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3087 states to 3087 states and 4566 transitions. [2020-10-12 12:05:21,571 INFO L78 Accepts]: Start accepts. Automaton has 3087 states and 4566 transitions. Word has length 1050 [2020-10-12 12:05:21,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:05:21,573 INFO L479 AbstractCegarLoop]: Abstraction has 3087 states and 4566 transitions. [2020-10-12 12:05:21,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 12:05:21,574 INFO L276 IsEmpty]: Start isEmpty. Operand 3087 states and 4566 transitions. [2020-10-12 12:05:21,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1060 [2020-10-12 12:05:21,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:05:21,592 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:21,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 12:05:21,592 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:05:21,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:05:21,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1438579475, now seen corresponding path program 1 times [2020-10-12 12:05:21,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:05:21,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034091343] [2020-10-12 12:05:21,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:05:21,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:05:21,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:05:22,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:05:26,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:05:26,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1079 [2020-10-12 12:05:26,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:05:26,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-12 12:05:26,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:05:26,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 12:05:26,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:05:26,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 12:05:26,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:05:27,322 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:05:27,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:05:27,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:05:27,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:05:27,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:05:27,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:05:27,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:05:27,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 12:05:27,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:05:27,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:05:27,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:05:27,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:05:27,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:05:27,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:05:27,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:05:27,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:05:27,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:05:27,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:05:27,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:05:27,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-12 12:05:27,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:05:27,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:05:27,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:05:27,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 12:05:27,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:05:27,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 12:05:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:05:27,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:05:27,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:05:27,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 12:05:27,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:05:27,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 12:05:27,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:05:27,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:05:27,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:05:27,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 12:05:27,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:05:28,844 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 76 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 12:05:28,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034091343] [2020-10-12 12:05:28,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:05:28,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 12:05:28,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886341625] [2020-10-12 12:05:28,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 12:05:28,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:05:28,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 12:05:28,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 12:05:28,849 INFO L87 Difference]: Start difference. First operand 3087 states and 4566 transitions. Second operand 8 states. [2020-10-12 12:05:28,991 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 12:05:29,966 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 12:05:45,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:05:45,652 INFO L93 Difference]: Finished difference Result 7679 states and 12113 transitions. [2020-10-12 12:05:45,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 12:05:45,653 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1059 [2020-10-12 12:05:45,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:05:45,679 INFO L225 Difference]: With dead ends: 7679 [2020-10-12 12:05:45,679 INFO L226 Difference]: Without dead ends: 5352 [2020-10-12 12:05:45,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-12 12:05:45,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5352 states. [2020-10-12 12:05:45,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5352 to 5289. [2020-10-12 12:05:45,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5289 states. [2020-10-12 12:05:45,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5289 states to 5289 states and 7683 transitions. [2020-10-12 12:05:45,825 INFO L78 Accepts]: Start accepts. Automaton has 5289 states and 7683 transitions. Word has length 1059 [2020-10-12 12:05:45,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:05:45,826 INFO L479 AbstractCegarLoop]: Abstraction has 5289 states and 7683 transitions. [2020-10-12 12:05:45,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 12:05:45,826 INFO L276 IsEmpty]: Start isEmpty. Operand 5289 states and 7683 transitions. [2020-10-12 12:05:45,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1064 [2020-10-12 12:05:45,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:05:45,852 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:45,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 12:05:45,853 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:05:45,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:05:45,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1980490469, now seen corresponding path program 1 times [2020-10-12 12:05:45,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:05:45,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438903156] [2020-10-12 12:05:45,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:05:46,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:05:46,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:05:46,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:05:50,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:05:51,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:05:51,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1083 [2020-10-12 12:05:51,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 12:05:51,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 12:05:51,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:05:51,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 12:05:51,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:05:51,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-12 12:05:51,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:05:51,616 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:05:51,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:05:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:05:51,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:05:51,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:05:51,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:05:51,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:05:51,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 12:05:51,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:05:51,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:05:51,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:05:51,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:05:51,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:05:51,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:05:51,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:05:51,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:05:52,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:05:52,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:05:52,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:05:52,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-10-12 12:05:52,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:05:52,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:05:52,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:05:52,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 12:05:52,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:05:52,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 12:05:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:05:52,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:05:52,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:05:52,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 12:05:52,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:05:52,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 12:05:52,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:05:52,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:05:52,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:05:52,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 12:05:52,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 12:05:53,135 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 78 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 12:05:53,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1438903156] [2020-10-12 12:05:53,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:05:53,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 12:05:53,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746343580] [2020-10-12 12:05:53,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 12:05:53,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:05:53,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 12:05:53,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 12:05:53,139 INFO L87 Difference]: Start difference. First operand 5289 states and 7683 transitions. Second operand 8 states. [2020-10-12 12:05:53,288 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 12:05:54,374 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 12:06:11,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:06:11,703 INFO L93 Difference]: Finished difference Result 12232 states and 18098 transitions. [2020-10-12 12:06:11,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 12:06:11,704 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1063 [2020-10-12 12:06:11,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:06:11,739 INFO L225 Difference]: With dead ends: 12232 [2020-10-12 12:06:11,739 INFO L226 Difference]: Without dead ends: 7703 [2020-10-12 12:06:11,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-12 12:06:11,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7703 states. [2020-10-12 12:06:11,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7703 to 7497. [2020-10-12 12:06:11,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7497 states. [2020-10-12 12:06:11,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7497 states to 7497 states and 10832 transitions. [2020-10-12 12:06:11,921 INFO L78 Accepts]: Start accepts. Automaton has 7497 states and 10832 transitions. Word has length 1063 [2020-10-12 12:06:11,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:06:11,922 INFO L479 AbstractCegarLoop]: Abstraction has 7497 states and 10832 transitions. [2020-10-12 12:06:11,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 12:06:11,922 INFO L276 IsEmpty]: Start isEmpty. Operand 7497 states and 10832 transitions. [2020-10-12 12:06:11,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1067 [2020-10-12 12:06:11,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:06:11,953 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:06:11,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 12:06:11,954 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:06:11,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:06:11,955 INFO L82 PathProgramCache]: Analyzing trace with hash -27203625, now seen corresponding path program 1 times [2020-10-12 12:06:11,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:06:11,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594654442] [2020-10-12 12:06:11,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:06:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:06:12,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:06:12,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:06:13,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:06:15,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:06:17,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:06:17,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1086 [2020-10-12 12:06:17,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 12:06:17,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5115 [2020-10-12 12:06:17,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:06:17,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 12:06:17,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 12:06:17,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 988 [2020-10-12 12:06:17,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:06:18,063 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:06:18,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:06:18,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:06:18,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:06:18,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:06:18,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:06:18,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:06:18,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 12:06:18,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:06:18,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:06:18,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:06:18,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:06:18,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:06:18,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:06:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:06:18,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:06:18,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:06:18,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:06:18,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:06:18,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 12:06:18,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:06:18,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:06:18,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:06:18,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:06:18,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:06:18,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 12:06:18,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:06:18,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:06:18,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:06:18,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 12:06:18,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:06:18,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 12:06:18,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:06:18,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:06:18,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:06:18,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 12:06:18,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:06:19,145 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 12:06:19,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594654442] [2020-10-12 12:06:19,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:06:19,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 12:06:19,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512242419] [2020-10-12 12:06:19,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 12:06:19,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:06:19,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 12:06:19,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 12:06:19,148 INFO L87 Difference]: Start difference. First operand 7497 states and 10832 transitions. Second operand 6 states. [2020-10-12 12:06:19,289 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 12:06:19,733 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 12:06:42,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:06:42,962 INFO L93 Difference]: Finished difference Result 26860 states and 41502 transitions. [2020-10-12 12:06:42,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 12:06:42,963 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1066 [2020-10-12 12:06:42,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:06:43,050 INFO L225 Difference]: With dead ends: 26860 [2020-10-12 12:06:43,050 INFO L226 Difference]: Without dead ends: 20123 [2020-10-12 12:06:43,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 12:06:43,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20123 states. [2020-10-12 12:06:43,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20123 to 20051. [2020-10-12 12:06:43,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20051 states. [2020-10-12 12:06:43,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20051 states to 20051 states and 28990 transitions. [2020-10-12 12:06:43,538 INFO L78 Accepts]: Start accepts. Automaton has 20051 states and 28990 transitions. Word has length 1066 [2020-10-12 12:06:43,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:06:43,539 INFO L479 AbstractCegarLoop]: Abstraction has 20051 states and 28990 transitions. [2020-10-12 12:06:43,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 12:06:43,539 INFO L276 IsEmpty]: Start isEmpty. Operand 20051 states and 28990 transitions. [2020-10-12 12:06:43,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1067 [2020-10-12 12:06:43,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:06:43,617 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:06:43,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 12:06:43,617 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:06:43,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:06:43,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1207954347, now seen corresponding path program 1 times [2020-10-12 12:06:43,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:06:43,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684502508] [2020-10-12 12:06:43,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:06:43,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:06:44,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:06:44,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:06:45,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:06:49,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:06:49,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1086 [2020-10-12 12:06:49,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 12:06:49,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-12 12:06:49,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:06:49,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 12:06:49,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 12:06:49,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 988 [2020-10-12 12:06:49,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:06:49,973 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:06:49,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:06:49,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:06:49,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:06:49,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:06:49,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:06:49,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:06:49,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 12:06:49,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:06:49,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:06:49,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:06:49,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:06:49,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:06:50,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:06:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:06:50,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:06:50,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:06:50,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:06:50,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:06:50,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 12:06:50,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:06:50,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:06:50,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:06:50,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:06:50,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:06:50,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 12:06:50,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:06:50,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:06:50,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:06:50,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 12:06:50,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:06:50,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 12:06:50,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:06:50,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:06:50,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:06:50,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 12:06:50,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:06:50,923 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 12:06:50,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684502508] [2020-10-12 12:06:50,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:06:50,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 12:06:50,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574286070] [2020-10-12 12:06:50,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 12:06:50,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:06:50,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 12:06:50,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 12:06:50,927 INFO L87 Difference]: Start difference. First operand 20051 states and 28990 transitions. Second operand 5 states. [2020-10-12 12:06:51,518 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 12:07:04,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:07:04,867 INFO L93 Difference]: Finished difference Result 33070 states and 48573 transitions. [2020-10-12 12:07:04,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 12:07:04,872 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1066 [2020-10-12 12:07:04,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:07:04,962 INFO L225 Difference]: With dead ends: 33070 [2020-10-12 12:07:04,963 INFO L226 Difference]: Without dead ends: 20055 [2020-10-12 12:07:04,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 12:07:05,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20055 states. [2020-10-12 12:07:05,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20055 to 20051. [2020-10-12 12:07:05,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20051 states. [2020-10-12 12:07:05,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20051 states to 20051 states and 27564 transitions. [2020-10-12 12:07:05,631 INFO L78 Accepts]: Start accepts. Automaton has 20051 states and 27564 transitions. Word has length 1066 [2020-10-12 12:07:05,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:07:05,632 INFO L479 AbstractCegarLoop]: Abstraction has 20051 states and 27564 transitions. [2020-10-12 12:07:05,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 12:07:05,633 INFO L276 IsEmpty]: Start isEmpty. Operand 20051 states and 27564 transitions. [2020-10-12 12:07:05,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1077 [2020-10-12 12:07:05,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:07:05,697 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:07:05,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 12:07:05,697 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:07:05,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:07:05,698 INFO L82 PathProgramCache]: Analyzing trace with hash 544020156, now seen corresponding path program 1 times [2020-10-12 12:07:05,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:07:05,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831847042] [2020-10-12 12:07:05,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:07:05,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:07:05,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:07:06,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:07:07,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:07:10,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:07:10,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1098 [2020-10-12 12:07:10,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 12:07:10,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5123 [2020-10-12 12:07:10,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:07:10,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 12:07:10,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:07:10,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-12 12:07:10,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:07:11,257 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:07:11,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:07:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:07:11,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:07:11,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:07:11,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:07:11,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:07:11,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 12:07:11,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:07:11,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:07:11,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:07:11,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:07:11,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:07:11,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:07:11,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:07:11,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:07:11,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:07:11,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:07:11,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:07:11,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-12 12:07:11,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:07:11,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:07:11,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:07:11,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 12:07:11,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:07:11,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 12:07:11,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:07:11,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:07:11,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:07:11,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 12:07:11,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:07:11,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 12:07:11,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:07:11,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:07:11,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:07:11,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 12:07:11,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:07:11,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-12 12:07:11,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:07:11,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:07:11,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:07:11,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 12:07:11,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:07:11,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 12:07:11,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:07:11,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:07:11,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 12:07:11,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:07:11,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:07:12,960 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 90 proven. 19 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 12:07:12,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831847042] [2020-10-12 12:07:12,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:07:12,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 12:07:12,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199390218] [2020-10-12 12:07:12,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 12:07:12,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:07:12,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 12:07:12,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 12:07:12,963 INFO L87 Difference]: Start difference. First operand 20051 states and 27564 transitions. Second operand 8 states. [2020-10-12 12:07:13,117 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 12:07:14,035 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 136