/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=NARROWEST --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/Problem13_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:40:12,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:40:12,750 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:40:12,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:40:12,800 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:40:12,813 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:40:12,814 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:40:12,818 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:40:12,821 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:40:12,823 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:40:12,824 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:40:12,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:40:12,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:40:12,832 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:40:12,836 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:40:12,838 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:40:12,840 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:40:12,841 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:40:12,843 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:40:12,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:40:12,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:40:12,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:40:12,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:40:12,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:40:12,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:40:12,864 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:40:12,864 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:40:12,867 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:40:12,868 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:40:12,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:40:12,869 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:40:12,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:40:12,871 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:40:12,872 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:40:12,873 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:40:12,873 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:40:12,874 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:40:12,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:40:12,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:40:12,876 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:40:12,877 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:40:12,878 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 [2020-10-13 08:40:12,927 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:40:12,928 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:40:12,930 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:40:12,931 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:40:12,931 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:40:12,931 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:40:12,932 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:40:12,932 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:40:12,932 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:40:12,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:40:12,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:40:12,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:40:12,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:40:12,935 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:40:12,935 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:40:12,935 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:40:12,935 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:40:12,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:40:12,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:40:12,936 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:40:12,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:40:12,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:40:12,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:40:12,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:40:12,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:40:12,937 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:40:12,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:40:12,938 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:40:12,938 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:40:12,938 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 08:40:13,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:40:13,277 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:40:13,281 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:40:13,283 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:40:13,284 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:40:13,285 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label42.c [2020-10-13 08:40:13,359 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c985e1b36/69f396b59430492cb67a2cb735dc259e/FLAGb9e93b790 [2020-10-13 08:40:14,145 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:40:14,146 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label42.c [2020-10-13 08:40:14,180 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c985e1b36/69f396b59430492cb67a2cb735dc259e/FLAGb9e93b790 [2020-10-13 08:40:14,264 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c985e1b36/69f396b59430492cb67a2cb735dc259e [2020-10-13 08:40:14,278 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:40:14,281 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:40:14,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:40:14,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:40:14,290 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:40:14,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:40:14" (1/1) ... [2020-10-13 08:40:14,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2362c63d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:40:14, skipping insertion in model container [2020-10-13 08:40:14,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:40:14" (1/1) ... [2020-10-13 08:40:14,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:40:14,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:40:16,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:40:16,343 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:40:17,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:40:17,168 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:40:17,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:40:17 WrapperNode [2020-10-13 08:40:17,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:40:17,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:40:17,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:40:17,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:40:17,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:40:17" (1/1) ... [2020-10-13 08:40:17,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:40:17" (1/1) ... [2020-10-13 08:40:17,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:40:17" (1/1) ... [2020-10-13 08:40:17,276 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:40:17" (1/1) ... [2020-10-13 08:40:17,468 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:40:17" (1/1) ... [2020-10-13 08:40:17,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:40:17" (1/1) ... [2020-10-13 08:40:17,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:40:17" (1/1) ... [2020-10-13 08:40:17,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:40:17,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:40:17,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:40:17,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:40:17,650 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:40:17" (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 [2020-10-13 08:40:17,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:40:17,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:40:17,764 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:40:17,764 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:40:17,764 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:40:17,764 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:40:17,764 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:40:17,767 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:40:17,768 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:40:17,768 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:40:17,768 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:40:17,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:40:17,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:40:17,769 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:40:17,769 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:40:17,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:40:17,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:40:30,122 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:40:30,122 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:40:30,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:40:30 BoogieIcfgContainer [2020-10-13 08:40:30,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:40:30,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:40:30,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:40:30,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:40:30,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:40:14" (1/3) ... [2020-10-13 08:40:30,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d8d48b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:40:30, skipping insertion in model container [2020-10-13 08:40:30,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:40:17" (2/3) ... [2020-10-13 08:40:30,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d8d48b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:40:30, skipping insertion in model container [2020-10-13 08:40:30,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:40:30" (3/3) ... [2020-10-13 08:40:30,146 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label42.c [2020-10-13 08:40:30,157 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:40:30,167 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:40:30,182 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:40:30,212 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:40:30,212 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:40:30,212 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:40:30,212 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:40:30,212 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:40:30,213 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:40:30,213 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:40:30,213 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:40:30,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-13 08:40:30,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-13 08:40:30,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:40:30,268 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] [2020-10-13 08:40:30,268 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:40:30,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:40:30,275 INFO L82 PathProgramCache]: Analyzing trace with hash -881047656, now seen corresponding path program 1 times [2020-10-13 08:40:30,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:40:30,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155284786] [2020-10-13 08:40:30,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:40:30,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:30,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:31,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:31,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 08:40:31,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:40:31,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 586 [2020-10-13 08:40:31,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:31,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:40:31,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:40:31,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 08:40:31,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:40:31,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:40:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:31,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:31,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:31,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:40:31,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:40:31,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 08:40:31,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:31,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:40:31,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:40:31,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:40:31,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:40:31,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:40:31,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155284786] [2020-10-13 08:40:31,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:40:31,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 08:40:31,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155288748] [2020-10-13 08:40:31,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:40:31,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:40:31,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:40:31,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:40:31,320 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 5 states. [2020-10-13 08:40:49,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:40:49,948 INFO L93 Difference]: Finished difference Result 4080 states and 7562 transitions. [2020-10-13 08:40:49,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:40:49,951 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-13 08:40:49,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:40:50,007 INFO L225 Difference]: With dead ends: 4080 [2020-10-13 08:40:50,008 INFO L226 Difference]: Without dead ends: 2872 [2020-10-13 08:40:50,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:40:50,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2872 states. [2020-10-13 08:40:50,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2872 to 1934. [2020-10-13 08:40:50,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1934 states. [2020-10-13 08:40:50,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 3163 transitions. [2020-10-13 08:40:50,236 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 3163 transitions. Word has length 71 [2020-10-13 08:40:50,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:40:50,238 INFO L479 AbstractCegarLoop]: Abstraction has 1934 states and 3163 transitions. [2020-10-13 08:40:50,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:40:50,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 3163 transitions. [2020-10-13 08:40:50,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-13 08:40:50,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:40:50,246 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:40:50,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:40:50,247 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:40:50,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:40:50,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1478649949, now seen corresponding path program 1 times [2020-10-13 08:40:50,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:40:50,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393614618] [2020-10-13 08:40:50,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:40:50,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:50,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:50,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:52,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:53,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:53,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 08:40:53,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:40:53,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3054 [2020-10-13 08:40:53,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:53,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:40:53,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:40:53,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 08:40:53,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:40:53,774 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 29 [2020-10-13 08:40:53,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:40:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:53,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:53,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:53,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:40:53,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:40:53,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:40:53,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:53,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:40:53,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:40:53,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:40:53,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:40:53,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:40:53,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:40:53,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:40:54,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:40:54,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:40:54,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:40:54,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-13 08:40:54,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:40:54,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:40:54,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:40:54,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:40:54,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:40:54,146 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:40:54,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393614618] [2020-10-13 08:40:54,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:40:54,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:40:54,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860131373] [2020-10-13 08:40:54,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:40:54,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:40:54,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:40:54,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:40:54,152 INFO L87 Difference]: Start difference. First operand 1934 states and 3163 transitions. Second operand 6 states. [2020-10-13 08:40:55,274 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2020-10-13 08:41:15,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:41:15,980 INFO L93 Difference]: Finished difference Result 3898 states and 6364 transitions. [2020-10-13 08:41:15,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 08:41:15,983 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2020-10-13 08:41:15,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:41:15,996 INFO L225 Difference]: With dead ends: 3898 [2020-10-13 08:41:15,996 INFO L226 Difference]: Without dead ends: 1938 [2020-10-13 08:41:16,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:41:16,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1938 states. [2020-10-13 08:41:16,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1938 to 1934. [2020-10-13 08:41:16,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1934 states. [2020-10-13 08:41:16,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 3161 transitions. [2020-10-13 08:41:16,082 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 3161 transitions. Word has length 146 [2020-10-13 08:41:16,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:41:16,085 INFO L479 AbstractCegarLoop]: Abstraction has 1934 states and 3161 transitions. [2020-10-13 08:41:16,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:41:16,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 3161 transitions. [2020-10-13 08:41:16,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-13 08:41:16,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:41:16,100 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:41:16,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:41:16,103 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:41:16,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:41:16,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1995231327, now seen corresponding path program 1 times [2020-10-13 08:41:16,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:41:16,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796180473] [2020-10-13 08:41:16,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:41:16,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:41:16,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:16,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:16,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:16,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:17,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:41:17,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 08:41:17,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:41:17,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1512 [2020-10-13 08:41:17,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:41:17,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:41:17,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 08:41:17,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:41:17,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:41:17,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:41:17,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:41:17,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:17,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:41:17,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:41:17,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:41:17,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:41:17,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:41:17,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:41:17,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:41:17,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:41:17,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:41:17,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:41:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:41:17,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:17,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:41:17,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 08:41:17,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:41:17,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 08:41:17,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:41:17,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:41:17,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-13 08:41:17,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:41:17,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:41:17,982 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:41:17,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796180473] [2020-10-13 08:41:17,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:41:17,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 08:41:17,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238872675] [2020-10-13 08:41:17,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:41:17,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:41:17,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:41:17,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:41:17,990 INFO L87 Difference]: Start difference. First operand 1934 states and 3161 transitions. Second operand 5 states. [2020-10-13 08:41:37,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:41:37,210 INFO L93 Difference]: Finished difference Result 5593 states and 9295 transitions. [2020-10-13 08:41:37,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:41:37,213 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-13 08:41:37,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:41:37,236 INFO L225 Difference]: With dead ends: 5593 [2020-10-13 08:41:37,237 INFO L226 Difference]: Without dead ends: 3665 [2020-10-13 08:41:37,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:41:37,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3665 states. [2020-10-13 08:41:37,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3665 to 3614. [2020-10-13 08:41:37,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3614 states. [2020-10-13 08:41:37,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3614 states to 3614 states and 5689 transitions. [2020-10-13 08:41:37,371 INFO L78 Accepts]: Start accepts. Automaton has 3614 states and 5689 transitions. Word has length 153 [2020-10-13 08:41:37,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:41:37,373 INFO L479 AbstractCegarLoop]: Abstraction has 3614 states and 5689 transitions. [2020-10-13 08:41:37,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:41:37,373 INFO L276 IsEmpty]: Start isEmpty. Operand 3614 states and 5689 transitions. [2020-10-13 08:41:37,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-13 08:41:37,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:41:37,377 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:41:37,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:41:37,378 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:41:37,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:41:37,379 INFO L82 PathProgramCache]: Analyzing trace with hash -391278179, now seen corresponding path program 1 times [2020-10-13 08:41:37,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:41:37,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233899863] [2020-10-13 08:41:37,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:41:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:41:37,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:37,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:38,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:38,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:39,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:40,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:41:40,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 08:41:40,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:41:40,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2582 [2020-10-13 08:41:40,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:41:40,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:41:40,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 08:41:40,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 08:41:40,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:41:40,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:41:40,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:41:40,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:40,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:41:40,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:41:40,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:41:40,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 08:41:40,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:41:40,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:41:40,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:41:40,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:41:40,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:41:40,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:41:40,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:41:40,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:41:40,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:41:40,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 08:41:40,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:41:40,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-13 08:41:40,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:41:40,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 08:41:40,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:41:40,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 08:41:40,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:41:40,562 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:41:40,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233899863] [2020-10-13 08:41:40,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:41:40,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:41:40,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383748065] [2020-10-13 08:41:40,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:41:40,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:41:40,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:41:40,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:41:40,572 INFO L87 Difference]: Start difference. First operand 3614 states and 5689 transitions. Second operand 6 states. [2020-10-13 08:42:15,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:42:15,527 INFO L93 Difference]: Finished difference Result 10500 states and 16826 transitions. [2020-10-13 08:42:15,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:42:15,530 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2020-10-13 08:42:15,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:42:15,561 INFO L225 Difference]: With dead ends: 10500 [2020-10-13 08:42:15,561 INFO L226 Difference]: Without dead ends: 6861 [2020-10-13 08:42:15,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:42:15,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6861 states. [2020-10-13 08:42:15,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6861 to 6857. [2020-10-13 08:42:15,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6857 states. [2020-10-13 08:42:15,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6857 states to 6857 states and 9569 transitions. [2020-10-13 08:42:15,740 INFO L78 Accepts]: Start accepts. Automaton has 6857 states and 9569 transitions. Word has length 153 [2020-10-13 08:42:15,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:42:15,741 INFO L479 AbstractCegarLoop]: Abstraction has 6857 states and 9569 transitions. [2020-10-13 08:42:15,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:42:15,741 INFO L276 IsEmpty]: Start isEmpty. Operand 6857 states and 9569 transitions. [2020-10-13 08:42:15,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-13 08:42:15,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:42:15,746 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:42:15,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:42:15,747 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:42:15,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:42:15,747 INFO L82 PathProgramCache]: Analyzing trace with hash 560484089, now seen corresponding path program 1 times [2020-10-13 08:42:15,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:42:15,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3915129] [2020-10-13 08:42:15,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:42:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:42:15,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:16,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:16,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:42:16,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-13 08:42:16,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:42:16,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 984 [2020-10-13 08:42:16,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:42:16,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:42:16,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-13 08:42:16,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:42:16,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:42:16,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:42:16,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:42:16,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:16,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:42:16,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:42:16,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:42:16,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:42:16,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:42:16,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:42:16,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:42:16,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:42:16,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:42:16,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:42:16,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:42:16,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:16,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:42:16,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 08:42:16,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:42:16,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 08:42:16,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:42:16,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:42:16,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:42:16,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 08:42:16,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:42:17,045 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:42:17,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3915129] [2020-10-13 08:42:17,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:42:17,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:42:17,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008467673] [2020-10-13 08:42:17,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:42:17,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:42:17,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:42:17,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:42:17,054 INFO L87 Difference]: Start difference. First operand 6857 states and 9569 transitions. Second operand 5 states. [2020-10-13 08:42:38,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:42:38,575 INFO L93 Difference]: Finished difference Result 20231 states and 28819 transitions. [2020-10-13 08:42:38,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:42:38,577 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-13 08:42:38,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:42:38,636 INFO L225 Difference]: With dead ends: 20231 [2020-10-13 08:42:38,636 INFO L226 Difference]: Without dead ends: 13380 [2020-10-13 08:42:38,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:42:38,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13380 states. [2020-10-13 08:42:39,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13380 to 13363. [2020-10-13 08:42:39,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13363 states. [2020-10-13 08:42:39,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13363 states to 13363 states and 17624 transitions. [2020-10-13 08:42:39,036 INFO L78 Accepts]: Start accepts. Automaton has 13363 states and 17624 transitions. Word has length 160 [2020-10-13 08:42:39,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:42:39,037 INFO L479 AbstractCegarLoop]: Abstraction has 13363 states and 17624 transitions. [2020-10-13 08:42:39,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:42:39,040 INFO L276 IsEmpty]: Start isEmpty. Operand 13363 states and 17624 transitions. [2020-10-13 08:42:39,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 08:42:39,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:42:39,045 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:42:39,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:42:39,046 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:42:39,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:42:39,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1810823663, now seen corresponding path program 1 times [2020-10-13 08:42:39,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:42:39,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520212747] [2020-10-13 08:42:39,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:42:39,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:42:39,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:39,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:39,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:40,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:42:40,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 08:42:40,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:42:40,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1095 [2020-10-13 08:42:40,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:42:40,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:42:40,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-13 08:42:40,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 08:42:40,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:42:40,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:42:40,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:42:40,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:40,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:42:40,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:42:40,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:42:40,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:42:40,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:42:40,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:42:40,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:42:40,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:42:40,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:42:40,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:42:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:42:40,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:40,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:42:40,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 08:42:40,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:42:40,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-13 08:42:40,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:42:40,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:42:40,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:42:40,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 08:42:40,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:42:40,721 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:42:40,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520212747] [2020-10-13 08:42:40,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:42:40,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:42:40,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626561971] [2020-10-13 08:42:40,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:42:40,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:42:40,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:42:40,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:42:40,727 INFO L87 Difference]: Start difference. First operand 13363 states and 17624 transitions. Second operand 5 states. [2020-10-13 08:42:56,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:42:56,970 INFO L93 Difference]: Finished difference Result 26784 states and 35352 transitions. [2020-10-13 08:42:56,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:42:56,972 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-13 08:42:56,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:42:57,027 INFO L225 Difference]: With dead ends: 26784 [2020-10-13 08:42:57,027 INFO L226 Difference]: Without dead ends: 13367 [2020-10-13 08:42:57,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:42:57,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13367 states. [2020-10-13 08:42:57,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13367 to 13363. [2020-10-13 08:42:57,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13363 states. [2020-10-13 08:42:57,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13363 states to 13363 states and 17599 transitions. [2020-10-13 08:42:57,471 INFO L78 Accepts]: Start accepts. Automaton has 13363 states and 17599 transitions. Word has length 172 [2020-10-13 08:42:57,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:42:57,472 INFO L479 AbstractCegarLoop]: Abstraction has 13363 states and 17599 transitions. [2020-10-13 08:42:57,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:42:57,472 INFO L276 IsEmpty]: Start isEmpty. Operand 13363 states and 17599 transitions. [2020-10-13 08:42:57,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-13 08:42:57,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:42:57,476 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:42:57,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:42:57,477 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:42:57,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:42:57,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1566470997, now seen corresponding path program 1 times [2020-10-13 08:42:57,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:42:57,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042827098] [2020-10-13 08:42:57,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:42:57,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:42:57,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:57,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:58,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:58,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:42:58,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-13 08:42:58,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:42:58,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1398 [2020-10-13 08:42:58,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:42:58,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:42:58,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-13 08:42:58,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 08:42:58,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:42:59,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:42:59,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:42:59,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:59,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:42:59,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:42:59,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:42:59,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:42:59,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:42:59,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:42:59,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:42:59,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:42:59,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:42:59,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:42:59,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:42:59,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:42:59,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:42:59,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:42:59,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:42:59,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 08:42:59,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:42:59,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:42:59,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:42:59,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:42:59,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:42:59,414 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:42:59,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042827098] [2020-10-13 08:42:59,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:42:59,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:42:59,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970038607] [2020-10-13 08:42:59,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:42:59,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:42:59,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:42:59,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:42:59,420 INFO L87 Difference]: Start difference. First operand 13363 states and 17599 transitions. Second operand 5 states. [2020-10-13 08:43:19,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:43:19,387 INFO L93 Difference]: Finished difference Result 26747 states and 35257 transitions. [2020-10-13 08:43:19,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:43:19,391 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-10-13 08:43:19,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:43:19,440 INFO L225 Difference]: With dead ends: 26747 [2020-10-13 08:43:19,441 INFO L226 Difference]: Without dead ends: 13367 [2020-10-13 08:43:19,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:43:19,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13367 states. [2020-10-13 08:43:19,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13367 to 13363. [2020-10-13 08:43:19,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13363 states. [2020-10-13 08:43:19,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13363 states to 13363 states and 17595 transitions. [2020-10-13 08:43:19,874 INFO L78 Accepts]: Start accepts. Automaton has 13363 states and 17595 transitions. Word has length 173 [2020-10-13 08:43:19,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:43:19,875 INFO L479 AbstractCegarLoop]: Abstraction has 13363 states and 17595 transitions. [2020-10-13 08:43:19,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:43:19,875 INFO L276 IsEmpty]: Start isEmpty. Operand 13363 states and 17595 transitions. [2020-10-13 08:43:19,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-13 08:43:19,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:43:19,879 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:43:19,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:43:19,879 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:43:19,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:43:19,880 INFO L82 PathProgramCache]: Analyzing trace with hash -701971687, now seen corresponding path program 1 times [2020-10-13 08:43:19,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:43:19,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914192412] [2020-10-13 08:43:19,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:43:19,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:19,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:20,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:20,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:20,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-13 08:43:20,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:43:20,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 961 [2020-10-13 08:43:20,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:20,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:43:20,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 115 [2020-10-13 08:43:20,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:43:20,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:43:20,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:43:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:20,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:20,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:20,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:43:20,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:43:20,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:43:20,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:20,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:43:20,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:43:20,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:43:20,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:43:21,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:43:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:21,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:21,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:21,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 08:43:21,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:43:21,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 08:43:21,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:21,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:43:21,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:43:21,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-13 08:43:21,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:43:21,194 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:43:21,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914192412] [2020-10-13 08:43:21,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:43:21,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:43:21,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566833148] [2020-10-13 08:43:21,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:43:21,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:43:21,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:43:21,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:43:21,197 INFO L87 Difference]: Start difference. First operand 13363 states and 17595 transitions. Second operand 5 states. [2020-10-13 08:43:54,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:43:54,985 INFO L93 Difference]: Finished difference Result 33239 states and 45504 transitions. [2020-10-13 08:43:54,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:43:54,991 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2020-10-13 08:43:54,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:43:55,080 INFO L225 Difference]: With dead ends: 33239 [2020-10-13 08:43:55,081 INFO L226 Difference]: Without dead ends: 19882 [2020-10-13 08:43:55,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:43:55,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19882 states. [2020-10-13 08:43:55,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19882 to 19870. [2020-10-13 08:43:55,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19870 states. [2020-10-13 08:43:55,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19870 states to 19870 states and 26299 transitions. [2020-10-13 08:43:55,501 INFO L78 Accepts]: Start accepts. Automaton has 19870 states and 26299 transitions. Word has length 176 [2020-10-13 08:43:55,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:43:55,501 INFO L479 AbstractCegarLoop]: Abstraction has 19870 states and 26299 transitions. [2020-10-13 08:43:55,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:43:55,502 INFO L276 IsEmpty]: Start isEmpty. Operand 19870 states and 26299 transitions. [2020-10-13 08:43:55,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-13 08:43:55,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:43:55,507 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:43:55,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:43:55,507 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:43:55,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:43:55,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1243547859, now seen corresponding path program 1 times [2020-10-13 08:43:55,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:43:55,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373264231] [2020-10-13 08:43:55,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:43:55,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:55,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:55,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:56,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:57,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:57,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 08:43:57,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:43:57,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1775 [2020-10-13 08:43:57,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:57,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:43:57,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 125 [2020-10-13 08:43:57,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 08:43:57,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:43:57,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:43:57,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:57,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:57,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:57,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:43:57,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:43:57,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:43:57,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:57,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:43:57,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:43:57,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:43:57,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:43:57,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:43:57,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:43:57,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:43:57,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:43:57,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 08:43:57,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:43:57,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-13 08:43:57,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:43:57,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:43:57,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:43:57,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-13 08:43:57,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:43:57,951 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:43:57,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [373264231] [2020-10-13 08:43:57,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:43:57,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:43:57,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801761037] [2020-10-13 08:43:57,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:43:57,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:43:57,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:43:57,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:43:57,956 INFO L87 Difference]: Start difference. First operand 19870 states and 26299 transitions. Second operand 5 states.