/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:01:33,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:01:33,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:01:33,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:01:33,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:01:33,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:01:33,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:01:33,661 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:01:33,665 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:01:33,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:01:33,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:01:33,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:01:33,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:01:33,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:01:33,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:01:33,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:01:33,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:01:33,680 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:01:33,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:01:33,689 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:01:33,693 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:01:33,694 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:01:33,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:01:33,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:01:33,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:01:33,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:01:33,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:01:33,706 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:01:33,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:01:33,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:01:33,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:01:33,708 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:01:33,709 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:01:33,710 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:01:33,711 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:01:33,711 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:01:33,712 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:01:33,712 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:01:33,712 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:01:33,713 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:01:33,715 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:01:33,715 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 22:01:33,742 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:01:33,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:01:33,744 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:01:33,744 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:01:33,744 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:01:33,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:01:33,745 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:01:33,745 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:01:33,745 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:01:33,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:01:33,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:01:33,746 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:01:33,746 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:01:33,746 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:01:33,746 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:01:33,746 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:01:33,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:01:33,747 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:01:33,747 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:01:33,747 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:01:33,747 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:01:33,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:01:33,748 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:01:33,748 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:01:33,748 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:01:33,748 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:01:33,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:01:33,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:01:33,749 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:01:33,749 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 22:01:34,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:01:34,078 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:01:34,083 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:01:34,087 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:01:34,088 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:01:34,089 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label39.c [2020-10-14 22:01:34,148 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc52120d3/c0c134f604544cf8b0caa29e010162d5/FLAG5727a3f59 [2020-10-14 22:01:34,837 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:01:34,838 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label39.c [2020-10-14 22:01:34,863 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc52120d3/c0c134f604544cf8b0caa29e010162d5/FLAG5727a3f59 [2020-10-14 22:01:34,964 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc52120d3/c0c134f604544cf8b0caa29e010162d5 [2020-10-14 22:01:34,974 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:01:34,976 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:01:34,979 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:01:34,979 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:01:34,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:01:34,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:01:34" (1/1) ... [2020-10-14 22:01:34,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72b8b919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:34, skipping insertion in model container [2020-10-14 22:01:34,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:01:34" (1/1) ... [2020-10-14 22:01:34,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:01:35,088 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:01:36,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:01:36,036 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:01:36,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:01:36,453 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:01:36,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:36 WrapperNode [2020-10-14 22:01:36,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:01:36,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:01:36,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:01:36,455 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:01:36,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:36" (1/1) ... [2020-10-14 22:01:36,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:36" (1/1) ... [2020-10-14 22:01:36,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:36" (1/1) ... [2020-10-14 22:01:36,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:36" (1/1) ... [2020-10-14 22:01:36,582 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:36" (1/1) ... [2020-10-14 22:01:36,597 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:36" (1/1) ... [2020-10-14 22:01:36,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:36" (1/1) ... [2020-10-14 22:01:36,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:01:36,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:01:36,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:01:36,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:01:36,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:01:36,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:01:36,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:01:36,714 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:01:36,714 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:01:36,714 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:01:36,714 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:01:36,715 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:01:36,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:01:36,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:01:36,716 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:01:36,717 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:01:36,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:01:36,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:01:42,877 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:01:42,878 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:01:42,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:01:42 BoogieIcfgContainer [2020-10-14 22:01:42,886 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:01:42,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:01:42,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:01:42,891 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:01:42,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:01:34" (1/3) ... [2020-10-14 22:01:42,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bdea93d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:01:42, skipping insertion in model container [2020-10-14 22:01:42,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:36" (2/3) ... [2020-10-14 22:01:42,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bdea93d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:01:42, skipping insertion in model container [2020-10-14 22:01:42,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:01:42" (3/3) ... [2020-10-14 22:01:42,895 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label39.c [2020-10-14 22:01:42,908 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:01:42,918 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:01:42,935 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:01:42,964 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:01:42,964 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:01:42,964 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:01:42,964 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:01:42,965 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:01:42,965 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:01:42,965 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:01:42,965 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:01:42,993 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 22:01:43,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 22:01:43,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:01:43,002 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:01:43,003 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:01:43,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:01:43,010 INFO L82 PathProgramCache]: Analyzing trace with hash 512802637, now seen corresponding path program 1 times [2020-10-14 22:01:43,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:01:43,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674864404] [2020-10-14 22:01:43,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:01:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:01:43,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:43,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:01:43,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 22:01:43,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:01:43,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 373 [2020-10-14 22:01:43,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:01:43,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:01:43,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:01:43,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:01:43,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 22:01:43,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 22:01:43,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:01:43,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:01:43,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:43,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:01:43,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:01:43,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:01:43,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 22:01:43,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:01:43,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:01:43,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:01:43,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:01:43,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:01:43,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:01:43,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:01:43,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674864404] [2020-10-14 22:01:43,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:01:43,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 22:01:43,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181079721] [2020-10-14 22:01:43,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 22:01:43,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:01:43,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 22:01:43,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 22:01:43,772 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 22:01:52,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:01:52,373 INFO L93 Difference]: Finished difference Result 1245 states and 2225 transitions. [2020-10-14 22:01:52,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:01:52,374 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-14 22:01:52,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:01:52,398 INFO L225 Difference]: With dead ends: 1245 [2020-10-14 22:01:52,398 INFO L226 Difference]: Without dead ends: 729 [2020-10-14 22:01:52,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:01:52,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2020-10-14 22:01:52,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 712. [2020-10-14 22:01:52,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 712 states. [2020-10-14 22:01:52,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1206 transitions. [2020-10-14 22:01:52,520 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1206 transitions. Word has length 17 [2020-10-14 22:01:52,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:01:52,521 INFO L479 AbstractCegarLoop]: Abstraction has 712 states and 1206 transitions. [2020-10-14 22:01:52,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 22:01:52,521 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1206 transitions. [2020-10-14 22:01:52,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-14 22:01:52,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:01:52,527 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 22:01:52,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:01:52,529 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:01:52,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:01:52,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1473821494, now seen corresponding path program 1 times [2020-10-14 22:01:52,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:01:52,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032087923] [2020-10-14 22:01:52,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:01:52,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:01:52,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:52,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:53,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:01:53,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 22:01:53,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:01:53,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1077 [2020-10-14 22:01:53,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:01:53,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:01:53,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:01:53,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:01:53,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 22:01:53,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 22:01:53,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:01:53,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:01:53,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:53,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:01:53,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:01:53,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:01:53,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:01:53,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:01:53,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:01:53,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:01:53,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:01:53,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:01:53,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:01:53,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:01:53,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:01:53,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:53,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:01:53,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 22:01:53,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:01:53,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-14 22:01:53,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:01:53,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:01:53,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:01:53,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:01:53,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 22:01:53,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:01:54,010 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:01:54,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032087923] [2020-10-14 22:01:54,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:01:54,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:01:54,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285983343] [2020-10-14 22:01:54,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:01:54,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:01:54,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:01:54,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:01:54,015 INFO L87 Difference]: Start difference. First operand 712 states and 1206 transitions. Second operand 7 states. [2020-10-14 22:02:03,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:02:03,570 INFO L93 Difference]: Finished difference Result 2095 states and 3603 transitions. [2020-10-14 22:02:03,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:02:03,570 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 86 [2020-10-14 22:02:03,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:02:03,584 INFO L225 Difference]: With dead ends: 2095 [2020-10-14 22:02:03,584 INFO L226 Difference]: Without dead ends: 1389 [2020-10-14 22:02:03,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:02:03,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2020-10-14 22:02:03,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1347. [2020-10-14 22:02:03,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1347 states. [2020-10-14 22:02:03,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 1963 transitions. [2020-10-14 22:02:03,648 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 1963 transitions. Word has length 86 [2020-10-14 22:02:03,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:02:03,649 INFO L479 AbstractCegarLoop]: Abstraction has 1347 states and 1963 transitions. [2020-10-14 22:02:03,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:02:03,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 1963 transitions. [2020-10-14 22:02:03,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 22:02:03,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:02:03,652 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 22:02:03,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:02:03,653 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:02:03,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:02:03,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1669071699, now seen corresponding path program 1 times [2020-10-14 22:02:03,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:02:03,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295696647] [2020-10-14 22:02:03,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:02:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:03,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:03,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:04,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:04,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 22:02:04,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:02:04,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 652 [2020-10-14 22:02:04,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:04,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:04,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:02:04,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:02:04,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:02:04,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:04,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:02:04,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:04,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:04,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:04,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:02:04,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:04,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 22:02:04,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:04,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:04,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:02:04,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:02:04,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:02:04,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:04,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:02:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:04,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:04,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:04,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 22:02:04,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:04,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 22:02:04,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:04,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:04,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:02:04,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:02:04,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 22:02:04,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:04,708 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:02:04,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295696647] [2020-10-14 22:02:04,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:02:04,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:02:04,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607280929] [2020-10-14 22:02:04,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:02:04,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:02:04,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:02:04,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:02:04,711 INFO L87 Difference]: Start difference. First operand 1347 states and 1963 transitions. Second operand 7 states. [2020-10-14 22:02:16,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:02:16,139 INFO L93 Difference]: Finished difference Result 4037 states and 6002 transitions. [2020-10-14 22:02:16,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:02:16,142 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 87 [2020-10-14 22:02:16,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:02:16,158 INFO L225 Difference]: With dead ends: 4037 [2020-10-14 22:02:16,158 INFO L226 Difference]: Without dead ends: 2696 [2020-10-14 22:02:16,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:02:16,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2696 states. [2020-10-14 22:02:16,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2696 to 2624. [2020-10-14 22:02:16,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2624 states. [2020-10-14 22:02:16,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2624 states to 2624 states and 3416 transitions. [2020-10-14 22:02:16,253 INFO L78 Accepts]: Start accepts. Automaton has 2624 states and 3416 transitions. Word has length 87 [2020-10-14 22:02:16,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:02:16,253 INFO L479 AbstractCegarLoop]: Abstraction has 2624 states and 3416 transitions. [2020-10-14 22:02:16,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:02:16,254 INFO L276 IsEmpty]: Start isEmpty. Operand 2624 states and 3416 transitions. [2020-10-14 22:02:16,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-14 22:02:16,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:02:16,256 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 22:02:16,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:02:16,256 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:02:16,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:02:16,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1105740148, now seen corresponding path program 1 times [2020-10-14 22:02:16,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:02:16,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548585608] [2020-10-14 22:02:16,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:02:16,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:16,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:16,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:16,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 22:02:16,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:16,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-14 22:02:16,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:16,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:16,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:02:16,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 22:02:16,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 22:02:16,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:16,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:02:16,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:16,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:16,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:16,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:02:16,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:16,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:02:16,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:16,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:16,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:02:16,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:02:16,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:02:16,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:16,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:02:16,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:16,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:16,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:16,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 22:02:16,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:16,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 22:02:16,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:16,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:16,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:02:16,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:02:16,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 22:02:16,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:16,756 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:02:16,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548585608] [2020-10-14 22:02:16,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:02:16,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:02:16,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759768878] [2020-10-14 22:02:16,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:02:16,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:02:16,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:02:16,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:02:16,759 INFO L87 Difference]: Start difference. First operand 2624 states and 3416 transitions. Second operand 5 states. [2020-10-14 22:02:26,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:02:26,144 INFO L93 Difference]: Finished difference Result 7754 states and 10247 transitions. [2020-10-14 22:02:26,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:02:26,150 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-14 22:02:26,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:02:26,169 INFO L225 Difference]: With dead ends: 7754 [2020-10-14 22:02:26,170 INFO L226 Difference]: Without dead ends: 3876 [2020-10-14 22:02:26,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:02:26,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3876 states. [2020-10-14 22:02:26,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3876 to 3868. [2020-10-14 22:02:26,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3868 states. [2020-10-14 22:02:26,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3868 states to 3868 states and 4613 transitions. [2020-10-14 22:02:26,277 INFO L78 Accepts]: Start accepts. Automaton has 3868 states and 4613 transitions. Word has length 112 [2020-10-14 22:02:26,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:02:26,277 INFO L479 AbstractCegarLoop]: Abstraction has 3868 states and 4613 transitions. [2020-10-14 22:02:26,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:02:26,278 INFO L276 IsEmpty]: Start isEmpty. Operand 3868 states and 4613 transitions. [2020-10-14 22:02:26,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-14 22:02:26,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:02:26,282 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 22:02:26,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:02:26,282 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:02:26,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:02:26,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1227015719, now seen corresponding path program 1 times [2020-10-14 22:02:26,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:02:26,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901628224] [2020-10-14 22:02:26,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:02:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:26,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:27,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:27,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-14 22:02:27,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:27,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1170 [2020-10-14 22:02:27,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:27,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:27,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:02:27,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:02:27,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-14 22:02:27,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:27,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:02:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:27,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:27,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:27,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:02:27,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:27,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 22:02:27,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:27,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:27,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:02:27,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:02:27,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:02:27,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:27,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:02:27,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:27,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:28,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:28,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-14 22:02:28,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:28,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 687 [2020-10-14 22:02:28,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:28,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:28,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:02:28,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:02:28,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-10-14 22:02:28,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:28,792 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:02:28,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901628224] [2020-10-14 22:02:28,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:02:28,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:02:28,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739183593] [2020-10-14 22:02:28,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:02:28,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:02:28,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:02:28,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:02:28,797 INFO L87 Difference]: Start difference. First operand 3868 states and 4613 transitions. Second operand 8 states. [2020-10-14 22:02:39,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:02:39,055 INFO L93 Difference]: Finished difference Result 11912 states and 14694 transitions. [2020-10-14 22:02:39,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 22:02:39,057 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 254 [2020-10-14 22:02:39,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:02:39,101 INFO L225 Difference]: With dead ends: 11912 [2020-10-14 22:02:39,101 INFO L226 Difference]: Without dead ends: 7737 [2020-10-14 22:02:39,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-14 22:02:39,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7737 states. [2020-10-14 22:02:39,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7737 to 7655. [2020-10-14 22:02:39,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7655 states. [2020-10-14 22:02:39,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7655 states to 7655 states and 9263 transitions. [2020-10-14 22:02:39,389 INFO L78 Accepts]: Start accepts. Automaton has 7655 states and 9263 transitions. Word has length 254 [2020-10-14 22:02:39,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:02:39,392 INFO L479 AbstractCegarLoop]: Abstraction has 7655 states and 9263 transitions. [2020-10-14 22:02:39,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:02:39,394 INFO L276 IsEmpty]: Start isEmpty. Operand 7655 states and 9263 transitions. [2020-10-14 22:02:39,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-14 22:02:39,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:02:39,405 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 22:02:39,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:02:39,405 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:02:39,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:02:39,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1629740519, now seen corresponding path program 1 times [2020-10-14 22:02:39,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:02:39,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762955243] [2020-10-14 22:02:39,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:02:39,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:39,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:40,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:40,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:40,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-14 22:02:40,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:02:40,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1210 [2020-10-14 22:02:40,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:40,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:40,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:02:40,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:02:40,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 295 [2020-10-14 22:02:40,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:02:40,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:02:40,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:40,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:40,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:40,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:02:40,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:40,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:02:40,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:40,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:40,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:02:40,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:02:40,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:02:40,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:40,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:02:40,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:40,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:41,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:41,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 22:02:41,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:41,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 427 [2020-10-14 22:02:41,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:41,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:41,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:02:41,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:02:41,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-14 22:02:41,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:41,688 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 22:02:41,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762955243] [2020-10-14 22:02:41,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:02:41,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:02:41,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219416911] [2020-10-14 22:02:41,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:02:41,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:02:41,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:02:41,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:02:41,692 INFO L87 Difference]: Start difference. First operand 7655 states and 9263 transitions. Second operand 6 states. [2020-10-14 22:02:47,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:02:47,663 INFO L93 Difference]: Finished difference Result 8620 states and 10361 transitions. [2020-10-14 22:02:47,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 22:02:47,666 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 291 [2020-10-14 22:02:47,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:02:47,703 INFO L225 Difference]: With dead ends: 8620 [2020-10-14 22:02:47,704 INFO L226 Difference]: Without dead ends: 8618 [2020-10-14 22:02:47,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:02:47,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8618 states. [2020-10-14 22:02:47,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8618 to 8594. [2020-10-14 22:02:47,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8594 states. [2020-10-14 22:02:47,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8594 states to 8594 states and 10308 transitions. [2020-10-14 22:02:47,916 INFO L78 Accepts]: Start accepts. Automaton has 8594 states and 10308 transitions. Word has length 291 [2020-10-14 22:02:47,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:02:47,918 INFO L479 AbstractCegarLoop]: Abstraction has 8594 states and 10308 transitions. [2020-10-14 22:02:47,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 22:02:47,918 INFO L276 IsEmpty]: Start isEmpty. Operand 8594 states and 10308 transitions. [2020-10-14 22:02:47,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-14 22:02:47,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:02:47,924 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, 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] [2020-10-14 22:02:47,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:02:47,924 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:02:47,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:02:47,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1549327553, now seen corresponding path program 1 times [2020-10-14 22:02:47,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:02:47,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511669023] [2020-10-14 22:02:47,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:02:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:48,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:48,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:49,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:51,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:51,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-14 22:02:51,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:02:51,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3052 [2020-10-14 22:02:51,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:51,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:51,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 22:02:51,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:02:51,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 314 [2020-10-14 22:02:51,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:02:51,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:02:51,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:51,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:51,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:51,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:02:51,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:51,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:02:51,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:51,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:51,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:02:51,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:02:51,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:02:51,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:02:51,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:02:51,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:51,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:51,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:51,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 22:02:51,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:51,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 384 [2020-10-14 22:02:51,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:51,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:51,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:02:51,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:02:51,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 22:02:51,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:02:51,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 22:02:51,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:51,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:51,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:51,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 22:02:51,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:51,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-14 22:02:51,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:51,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:51,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:02:51,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:02:51,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 22:02:51,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:52,243 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 107 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 22:02:52,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511669023] [2020-10-14 22:02:52,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:02:52,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:02:52,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769652047] [2020-10-14 22:02:52,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 22:02:52,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:02:52,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 22:02:52,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 22:02:52,246 INFO L87 Difference]: Start difference. First operand 8594 states and 10308 transitions. Second operand 9 states. [2020-10-14 22:03:03,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:03:03,613 INFO L93 Difference]: Finished difference Result 18967 states and 23435 transitions. [2020-10-14 22:03:03,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 22:03:03,615 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 308 [2020-10-14 22:03:03,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:03:03,686 INFO L225 Difference]: With dead ends: 18967 [2020-10-14 22:03:03,686 INFO L226 Difference]: Without dead ends: 11001 [2020-10-14 22:03:03,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-14 22:03:03,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11001 states. [2020-10-14 22:03:04,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11001 to 9566. [2020-10-14 22:03:04,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9566 states. [2020-10-14 22:03:04,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9566 states to 9566 states and 11438 transitions. [2020-10-14 22:03:04,089 INFO L78 Accepts]: Start accepts. Automaton has 9566 states and 11438 transitions. Word has length 308 [2020-10-14 22:03:04,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:03:04,092 INFO L479 AbstractCegarLoop]: Abstraction has 9566 states and 11438 transitions. [2020-10-14 22:03:04,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 22:03:04,092 INFO L276 IsEmpty]: Start isEmpty. Operand 9566 states and 11438 transitions. [2020-10-14 22:03:04,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2020-10-14 22:03:04,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:03:04,100 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:03:04,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:03:04,101 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:03:04,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:03:04,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1631740198, now seen corresponding path program 1 times [2020-10-14 22:03:04,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:03:04,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011269879] [2020-10-14 22:03:04,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:03:04,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:04,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:04,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:06,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:07,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:07,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 376 [2020-10-14 22:03:07,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:03:07,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3234 [2020-10-14 22:03:07,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:07,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:07,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 22:03:07,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:03:07,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 370 [2020-10-14 22:03:07,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:03:07,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:03:07,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:07,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:07,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:07,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:03:07,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:07,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:03:07,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:07,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:07,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:03:07,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:07,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:03:07,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:03:07,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:03:07,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:07,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:08,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:08,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 22:03:08,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:08,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 436 [2020-10-14 22:03:08,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:08,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:08,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:03:08,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:03:08,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 22:03:08,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:03:08,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 22:03:08,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:08,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:08,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:08,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 22:03:08,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:08,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-14 22:03:08,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:08,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:08,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:03:08,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:03:08,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-14 22:03:08,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:08,815 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 163 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 22:03:08,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011269879] [2020-10-14 22:03:08,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:03:08,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:03:08,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379044112] [2020-10-14 22:03:08,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 22:03:08,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:03:08,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 22:03:08,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-14 22:03:08,818 INFO L87 Difference]: Start difference. First operand 9566 states and 11438 transitions. Second operand 9 states. [2020-10-14 22:03:19,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:03:19,783 INFO L93 Difference]: Finished difference Result 19946 states and 24638 transitions. [2020-10-14 22:03:19,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 22:03:19,786 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 364 [2020-10-14 22:03:19,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:03:19,857 INFO L225 Difference]: With dead ends: 19946 [2020-10-14 22:03:19,857 INFO L226 Difference]: Without dead ends: 11960 [2020-10-14 22:03:19,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-14 22:03:19,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11960 states. [2020-10-14 22:03:20,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11960 to 10511. [2020-10-14 22:03:20,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10511 states. [2020-10-14 22:03:20,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10511 states to 10511 states and 12520 transitions. [2020-10-14 22:03:20,321 INFO L78 Accepts]: Start accepts. Automaton has 10511 states and 12520 transitions. Word has length 364 [2020-10-14 22:03:20,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:03:20,322 INFO L479 AbstractCegarLoop]: Abstraction has 10511 states and 12520 transitions. [2020-10-14 22:03:20,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 22:03:20,322 INFO L276 IsEmpty]: Start isEmpty. Operand 10511 states and 12520 transitions. [2020-10-14 22:03:20,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2020-10-14 22:03:20,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:03:20,331 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:03:20,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:03:20,332 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:03:20,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:03:20,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1630996304, now seen corresponding path program 1 times [2020-10-14 22:03:20,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:03:20,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781390034] [2020-10-14 22:03:20,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:03:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:20,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:20,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:22,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:25,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:25,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 399 [2020-10-14 22:03:25,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:03:25,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 22:03:25,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:25,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:25,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:03:25,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-14 22:03:25,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-14 22:03:25,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:03:25,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:03:25,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:25,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:25,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:25,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:03:25,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:25,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 22:03:25,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:25,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:25,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:03:25,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:25,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:03:25,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:03:25,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:03:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:25,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:26,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:26,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 22:03:26,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:26,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 476 [2020-10-14 22:03:26,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:26,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:26,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:03:26,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:26,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 22:03:26,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:03:26,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 22:03:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:26,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:26,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:26,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-14 22:03:26,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:26,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-10-14 22:03:26,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:26,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:26,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:03:26,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:03:26,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-14 22:03:26,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:03:26,989 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:03:26,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781390034] [2020-10-14 22:03:27,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:03:27,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:03:27,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140206472] [2020-10-14 22:03:27,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:03:27,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:03:27,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:03:27,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:03:27,004 INFO L87 Difference]: Start difference. First operand 10511 states and 12520 transitions. Second operand 7 states. [2020-10-14 22:03:38,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:03:38,698 INFO L93 Difference]: Finished difference Result 25789 states and 31636 transitions. [2020-10-14 22:03:38,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:03:38,700 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 387 [2020-10-14 22:03:38,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:03:38,772 INFO L225 Difference]: With dead ends: 25789 [2020-10-14 22:03:38,772 INFO L226 Difference]: Without dead ends: 15591 [2020-10-14 22:03:38,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:03:38,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15591 states. [2020-10-14 22:03:39,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15591 to 15533. [2020-10-14 22:03:39,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15533 states. [2020-10-14 22:03:39,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15533 states to 15533 states and 18174 transitions. [2020-10-14 22:03:39,163 INFO L78 Accepts]: Start accepts. Automaton has 15533 states and 18174 transitions. Word has length 387 [2020-10-14 22:03:39,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:03:39,164 INFO L479 AbstractCegarLoop]: Abstraction has 15533 states and 18174 transitions. [2020-10-14 22:03:39,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:03:39,167 INFO L276 IsEmpty]: Start isEmpty. Operand 15533 states and 18174 transitions. [2020-10-14 22:03:39,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2020-10-14 22:03:39,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:03:39,179 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:03:39,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:03:39,180 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:03:39,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:03:39,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1714023393, now seen corresponding path program 1 times [2020-10-14 22:03:39,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:03:39,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486674088] [2020-10-14 22:03:39,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:03:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:39,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:39,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:41,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:42,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:44,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:44,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 433 [2020-10-14 22:03:44,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:03:44,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-14 22:03:44,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:44,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:44,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:03:44,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:03:44,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-14 22:03:44,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:44,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:03:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:44,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:44,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:44,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:03:44,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:44,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:03:44,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:44,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:44,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:03:44,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:44,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:03:44,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:44,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:03:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:44,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:44,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:44,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 22:03:44,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:44,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-14 22:03:44,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:44,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:44,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:03:44,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:03:44,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 22:03:44,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:44,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 22:03:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:44,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:44,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:44,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:03:44,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:44,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 22:03:44,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:44,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:44,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:03:44,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 22:03:44,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:03:44,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:44,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-14 22:03:44,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:45,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:45,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:45,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 22:03:45,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:45,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 22:03:45,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:45,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:45,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:03:45,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 22:03:45,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:03:45,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:45,387 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 30 proven. 192 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2020-10-14 22:03:45,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486674088] [2020-10-14 22:03:45,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:03:45,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:03:45,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445192421] [2020-10-14 22:03:45,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:03:45,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:03:45,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:03:45,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:03:45,390 INFO L87 Difference]: Start difference. First operand 15533 states and 18174 transitions. Second operand 7 states. [2020-10-14 22:03:54,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:03:54,790 INFO L93 Difference]: Finished difference Result 30783 states and 36117 transitions. [2020-10-14 22:03:54,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 22:03:54,795 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 419 [2020-10-14 22:03:54,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:03:54,850 INFO L225 Difference]: With dead ends: 30783 [2020-10-14 22:03:54,850 INFO L226 Difference]: Without dead ends: 15563 [2020-10-14 22:03:54,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:03:54,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15563 states. [2020-10-14 22:03:55,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15563 to 15545. [2020-10-14 22:03:55,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15545 states. [2020-10-14 22:03:55,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15545 states to 15545 states and 18186 transitions. [2020-10-14 22:03:55,230 INFO L78 Accepts]: Start accepts. Automaton has 15545 states and 18186 transitions. Word has length 419 [2020-10-14 22:03:55,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:03:55,231 INFO L479 AbstractCegarLoop]: Abstraction has 15545 states and 18186 transitions. [2020-10-14 22:03:55,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:03:55,231 INFO L276 IsEmpty]: Start isEmpty. Operand 15545 states and 18186 transitions. [2020-10-14 22:03:55,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2020-10-14 22:03:55,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:03:55,247 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:03:55,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 22:03:55,248 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:03:55,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:03:55,248 INFO L82 PathProgramCache]: Analyzing trace with hash -352228007, now seen corresponding path program 1 times [2020-10-14 22:03:55,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:03:55,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842273573] [2020-10-14 22:03:55,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:03:55,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:55,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:56,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:57,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:57,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 473 [2020-10-14 22:03:57,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:03:57,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2022 [2020-10-14 22:03:57,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:57,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:57,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:03:57,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 22:03:57,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-14 22:03:57,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:03:57,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:03:57,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:57,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:57,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:57,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:03:57,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:57,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:03:57,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:57,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:57,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:03:57,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:57,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:03:57,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:03:57,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:03:57,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:57,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:57,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:57,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 22:03:57,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:57,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-14 22:03:57,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:57,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:57,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:03:57,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:57,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 22:03:57,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:58,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:03:58,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:58,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:58,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:58,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-14 22:03:58,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:58,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-14 22:03:58,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:58,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:58,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:03:58,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:03:58,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-14 22:03:58,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:03:58,704 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:03:58,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842273573] [2020-10-14 22:03:58,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:03:58,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:03:58,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012544323] [2020-10-14 22:03:58,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:03:58,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:03:58,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:03:58,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:03:58,707 INFO L87 Difference]: Start difference. First operand 15545 states and 18186 transitions. Second operand 7 states. [2020-10-14 22:04:11,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:04:11,060 INFO L93 Difference]: Finished difference Result 35521 states and 42928 transitions. [2020-10-14 22:04:11,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:04:11,064 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 461 [2020-10-14 22:04:11,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:04:11,123 INFO L225 Difference]: With dead ends: 35521 [2020-10-14 22:04:11,124 INFO L226 Difference]: Without dead ends: 20289 [2020-10-14 22:04:11,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:04:11,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20289 states. [2020-10-14 22:04:11,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20289 to 20255. [2020-10-14 22:04:11,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20255 states. [2020-10-14 22:04:11,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20255 states to 20255 states and 23512 transitions. [2020-10-14 22:04:11,617 INFO L78 Accepts]: Start accepts. Automaton has 20255 states and 23512 transitions. Word has length 461 [2020-10-14 22:04:11,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:04:11,618 INFO L479 AbstractCegarLoop]: Abstraction has 20255 states and 23512 transitions. [2020-10-14 22:04:11,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:04:11,618 INFO L276 IsEmpty]: Start isEmpty. Operand 20255 states and 23512 transitions. [2020-10-14 22:04:11,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2020-10-14 22:04:11,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:04:11,632 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:04:11,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 22:04:11,633 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:04:11,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:04:11,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1493336950, now seen corresponding path program 1 times [2020-10-14 22:04:11,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:04:11,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832394036] [2020-10-14 22:04:11,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:04:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:12,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:12,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:13,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:15,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:15,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 507 [2020-10-14 22:04:15,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:04:15,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3738 [2020-10-14 22:04:15,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:15,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:15,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:04:15,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 22:04:15,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 22:04:15,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:04:15,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:04:15,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:15,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:15,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:15,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:04:15,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:15,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:04:15,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:15,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:15,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:04:15,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:15,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:04:15,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:04:15,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:04:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:16,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:16,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:16,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 22:04:16,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:16,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-14 22:04:16,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:16,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:16,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:04:16,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:16,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 22:04:16,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:04:16,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:04:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:16,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:16,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:16,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:04:16,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:16,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 22:04:16,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:16,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:16,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:04:16,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:04:16,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:04:16,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:16,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-14 22:04:16,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:16,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:16,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:16,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 22:04:16,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:16,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 22:04:16,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:16,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:16,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:04:16,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 22:04:16,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:04:16,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:17,055 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 142 proven. 90 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-14 22:04:17,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832394036] [2020-10-14 22:04:17,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:04:17,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:04:17,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152124047] [2020-10-14 22:04:17,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:04:17,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:04:17,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:04:17,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:04:17,058 INFO L87 Difference]: Start difference. First operand 20255 states and 23512 transitions. Second operand 7 states. [2020-10-14 22:04:29,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:04:29,739 INFO L93 Difference]: Finished difference Result 41785 states and 48586 transitions. [2020-10-14 22:04:29,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:04:29,742 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 493 [2020-10-14 22:04:29,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:04:29,819 INFO L225 Difference]: With dead ends: 41785 [2020-10-14 22:04:29,819 INFO L226 Difference]: Without dead ends: 21843 [2020-10-14 22:04:29,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:04:29,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21843 states. [2020-10-14 22:04:30,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21843 to 21801. [2020-10-14 22:04:30,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21801 states. [2020-10-14 22:04:30,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21801 states to 21801 states and 25138 transitions. [2020-10-14 22:04:30,316 INFO L78 Accepts]: Start accepts. Automaton has 21801 states and 25138 transitions. Word has length 493 [2020-10-14 22:04:30,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:04:30,317 INFO L479 AbstractCegarLoop]: Abstraction has 21801 states and 25138 transitions. [2020-10-14 22:04:30,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:04:30,317 INFO L276 IsEmpty]: Start isEmpty. Operand 21801 states and 25138 transitions. [2020-10-14 22:04:30,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2020-10-14 22:04:30,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:04:30,324 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:04:30,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 22:04:30,324 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:04:30,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:04:30,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1771554622, now seen corresponding path program 1 times [2020-10-14 22:04:30,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:04:30,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1263377747] [2020-10-14 22:04:30,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:04:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:30,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:31,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:31,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:31,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 519 [2020-10-14 22:04:31,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:04:31,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1162 [2020-10-14 22:04:31,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:31,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:31,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:04:31,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 22:04:31,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 22:04:31,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:04:31,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:04:31,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:31,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:31,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:31,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:04:31,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:31,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:04:31,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:31,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:31,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:04:31,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:31,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:04:31,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:04:31,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:04:31,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:31,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:31,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:31,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:04:31,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:31,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 22:04:31,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:31,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:31,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:04:31,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:31,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:04:31,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:31,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:04:31,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:31,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:32,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:32,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:04:32,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:32,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 22:04:32,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:32,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:32,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:04:32,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:32,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 22:04:32,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:32,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 22:04:32,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:32,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:32,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:32,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 22:04:32,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:32,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 22:04:32,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:32,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:32,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:04:32,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:04:32,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 22:04:32,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:32,302 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 211 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 22:04:32,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1263377747] [2020-10-14 22:04:32,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:04:32,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:04:32,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851200827] [2020-10-14 22:04:32,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:04:32,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:04:32,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:04:32,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:04:32,304 INFO L87 Difference]: Start difference. First operand 21801 states and 25138 transitions. Second operand 7 states. [2020-10-14 22:04:43,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:04:43,617 INFO L93 Difference]: Finished difference Result 44564 states and 52307 transitions. [2020-10-14 22:04:43,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:04:43,620 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 505 [2020-10-14 22:04:43,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:04:43,683 INFO L225 Difference]: With dead ends: 44564 [2020-10-14 22:04:43,683 INFO L226 Difference]: Without dead ends: 24337 [2020-10-14 22:04:43,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:04:43,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24337 states. [2020-10-14 22:04:44,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24337 to 23678. [2020-10-14 22:04:44,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23678 states. [2020-10-14 22:04:44,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23678 states to 23678 states and 27145 transitions. [2020-10-14 22:04:44,126 INFO L78 Accepts]: Start accepts. Automaton has 23678 states and 27145 transitions. Word has length 505 [2020-10-14 22:04:44,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:04:44,127 INFO L479 AbstractCegarLoop]: Abstraction has 23678 states and 27145 transitions. [2020-10-14 22:04:44,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:04:44,127 INFO L276 IsEmpty]: Start isEmpty. Operand 23678 states and 27145 transitions. [2020-10-14 22:04:44,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2020-10-14 22:04:44,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:04:44,132 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 22:04:44,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 22:04:44,133 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:04:44,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:04:44,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1088833530, now seen corresponding path program 1 times [2020-10-14 22:04:44,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:04:44,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [18061937] [2020-10-14 22:04:44,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:04:44,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:44,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:44,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:46,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:46,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 556 [2020-10-14 22:04:46,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:04:46,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1945 [2020-10-14 22:04:46,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:46,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:46,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:04:46,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 22:04:46,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-14 22:04:46,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:46,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:04:46,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:46,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:46,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:46,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:04:46,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:46,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:04:46,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:46,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:46,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:04:46,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:46,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:04:46,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:46,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:04:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:46,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:46,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:46,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:04:46,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:46,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 22:04:46,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:46,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:46,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:04:46,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:46,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:04:46,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:46,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:04:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:46,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:46,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:46,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:04:46,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:46,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 22:04:46,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:46,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:46,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:04:46,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:46,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 22:04:46,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:46,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 22:04:46,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:46,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:46,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:46,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 22:04:46,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:46,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-14 22:04:46,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:46,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:46,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:04:46,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:04:46,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 22:04:46,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:04:47,122 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 268 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 22:04:47,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [18061937] [2020-10-14 22:04:47,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:04:47,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:04:47,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016339060] [2020-10-14 22:04:47,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:04:47,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:04:47,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:04:47,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:04:47,124 INFO L87 Difference]: Start difference. First operand 23678 states and 27145 transitions. Second operand 7 states. [2020-10-14 22:05:01,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:05:01,262 INFO L93 Difference]: Finished difference Result 49455 states and 58333 transitions. [2020-10-14 22:05:01,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:05:01,266 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 542 [2020-10-14 22:05:01,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:05:01,352 INFO L225 Difference]: With dead ends: 49455 [2020-10-14 22:05:01,352 INFO L226 Difference]: Without dead ends: 29530 [2020-10-14 22:05:01,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:05:01,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29530 states. [2020-10-14 22:05:01,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29530 to 27676. [2020-10-14 22:05:01,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27676 states. [2020-10-14 22:05:01,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27676 states to 27676 states and 32522 transitions. [2020-10-14 22:05:01,885 INFO L78 Accepts]: Start accepts. Automaton has 27676 states and 32522 transitions. Word has length 542 [2020-10-14 22:05:01,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:05:01,886 INFO L479 AbstractCegarLoop]: Abstraction has 27676 states and 32522 transitions. [2020-10-14 22:05:01,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:05:01,886 INFO L276 IsEmpty]: Start isEmpty. Operand 27676 states and 32522 transitions. [2020-10-14 22:05:01,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2020-10-14 22:05:01,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:05:01,895 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:05:01,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 22:05:01,895 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:05:01,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:05:01,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1261329478, now seen corresponding path program 1 times [2020-10-14 22:05:01,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:05:01,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371851994] [2020-10-14 22:05:01,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:05:02,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:02,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:02,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:03,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:06,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:06,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 670 [2020-10-14 22:05:06,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:05:06,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4892 [2020-10-14 22:05:06,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:06,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:06,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 22:05:06,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-14 22:05:06,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-14 22:05:06,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:07,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:05:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:07,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:07,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:07,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:05:07,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:07,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:05:07,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:07,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:07,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:05:07,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:07,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:05:07,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:07,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:05:07,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:07,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:07,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:07,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:05:07,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:07,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-10-14 22:05:07,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:07,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:07,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:05:07,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:07,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-14 22:05:07,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:07,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:05:07,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:07,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:07,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:07,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:05:07,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:07,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 22:05:07,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:07,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:07,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:05:07,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:05:07,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:05:07,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:07,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 22:05:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:07,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:07,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:07,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 22:05:07,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:07,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-14 22:05:07,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:07,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:07,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:05:07,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:05:07,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-14 22:05:07,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:08,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-10-14 22:05:08,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:08,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:08,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:08,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 22:05:08,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:08,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 22:05:08,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:08,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:08,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:05:08,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 22:05:08,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:05:08,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:08,374 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 406 proven. 184 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-14 22:05:08,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371851994] [2020-10-14 22:05:08,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:05:08,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 22:05:08,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970571312] [2020-10-14 22:05:08,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:05:08,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:05:08,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:05:08,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:05:08,376 INFO L87 Difference]: Start difference. First operand 27676 states and 32522 transitions. Second operand 10 states.