/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/Problem13_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:32:10,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:32:10,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:32:10,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:32:10,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:32:10,764 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:32:10,766 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:32:10,770 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:32:10,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:32:10,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:32:10,778 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:32:10,779 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:32:10,779 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:32:10,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:32:10,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:32:10,788 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:32:10,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:32:10,793 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:32:10,795 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:32:10,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:32:10,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:32:10,809 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:32:10,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:32:10,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:32:10,823 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:32:10,827 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:32:10,827 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:32:10,828 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:32:10,829 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:32:10,830 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:32:10,830 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:32:10,836 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:32:10,837 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:32:10,837 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:32:10,840 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:32:10,841 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:32:10,842 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:32:10,842 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:32:10,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:32:10,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:32:10,844 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:32:10,845 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 21:32:10,887 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:32:10,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:32:10,890 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:32:10,890 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:32:10,891 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:32:10,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:32:10,891 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:32:10,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:32:10,892 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:32:10,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:32:10,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:32:10,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:32:10,894 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:32:10,894 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:32:10,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:32:10,895 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:32:10,895 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:32:10,895 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:32:10,895 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:32:10,895 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:32:10,896 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:32:10,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:32:10,896 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:32:10,897 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:32:10,897 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:32:10,897 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:32:10,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:32:10,897 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:32:10,897 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:32:10,898 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 21:32:11,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:32:11,233 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:32:11,237 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:32:11,239 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:32:11,239 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:32:11,240 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label38.c [2020-10-14 21:32:11,314 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f7a45203/8d3dd8351ecd43a0b5d41342f0453633/FLAG445286b9b [2020-10-14 21:32:12,215 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:32:12,216 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label38.c [2020-10-14 21:32:12,255 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f7a45203/8d3dd8351ecd43a0b5d41342f0453633/FLAG445286b9b [2020-10-14 21:32:12,631 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f7a45203/8d3dd8351ecd43a0b5d41342f0453633 [2020-10-14 21:32:12,640 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:32:12,643 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:32:12,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:32:12,645 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:32:12,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:32:12,653 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:32:12" (1/1) ... [2020-10-14 21:32:12,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aae5b2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:32:12, skipping insertion in model container [2020-10-14 21:32:12,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:32:12" (1/1) ... [2020-10-14 21:32:12,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:32:12,879 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:32:14,665 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:32:14,673 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:32:15,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:32:15,442 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:32:15,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:32:15 WrapperNode [2020-10-14 21:32:15,444 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:32:15,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:32:15,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:32:15,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:32:15,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:32:15" (1/1) ... [2020-10-14 21:32:15,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:32:15" (1/1) ... [2020-10-14 21:32:15,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:32:15" (1/1) ... [2020-10-14 21:32:15,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:32:15" (1/1) ... [2020-10-14 21:32:15,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:32:15" (1/1) ... [2020-10-14 21:32:15,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:32:15" (1/1) ... [2020-10-14 21:32:15,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:32:15" (1/1) ... [2020-10-14 21:32:15,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:32:15,853 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:32:15,854 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:32:15,854 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:32:15,855 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:32:15" (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 21:32:15,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:32:15,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:32:15,939 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:32:15,940 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:32:15,940 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:32:15,940 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:32:15,940 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:32:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:32:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:32:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:32:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:32:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:32:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:32:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:32:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:32:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:32:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:32:28,481 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:32:28,482 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:32:28,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:32:28 BoogieIcfgContainer [2020-10-14 21:32:28,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:32:28,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:32:28,505 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:32:28,515 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:32:28,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:32:12" (1/3) ... [2020-10-14 21:32:28,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a0ac15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:32:28, skipping insertion in model container [2020-10-14 21:32:28,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:32:15" (2/3) ... [2020-10-14 21:32:28,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a0ac15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:32:28, skipping insertion in model container [2020-10-14 21:32:28,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:32:28" (3/3) ... [2020-10-14 21:32:28,521 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label38.c [2020-10-14 21:32:28,536 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:32:28,551 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:32:28,565 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:32:28,604 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:32:28,604 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:32:28,604 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:32:28,604 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:32:28,604 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:32:28,604 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:32:28,604 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:32:28,605 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:32:28,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 21:32:28,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 21:32:28,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:32:28,662 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:32:28,662 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:32:28,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:32:28,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1954796256, now seen corresponding path program 1 times [2020-10-14 21:32:28,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:32:28,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428738379] [2020-10-14 21:32:28,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:32:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:32:29,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:29,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:32:29,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 21:32:29,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:32:29,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 502 [2020-10-14 21:32:29,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:32:29,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:32:29,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:32:29,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:32:29,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 21:32:29,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 96 [2020-10-14 21:32:29,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:32:29,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:32:29,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:29,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:32:29,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:32:29,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:32:29,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:32:29,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:32:29,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:32:29,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:32:29,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:32:29,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:32:29,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:32:29,714 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 21:32:29,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428738379] [2020-10-14 21:32:29,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:32:29,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:32:29,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880733826] [2020-10-14 21:32:29,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:32:29,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:32:29,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:32:29,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:32:29,752 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-14 21:32:48,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:32:48,427 INFO L93 Difference]: Finished difference Result 3204 states and 5913 transitions. [2020-10-14 21:32:48,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:32:48,432 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-10-14 21:32:48,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:32:48,478 INFO L225 Difference]: With dead ends: 3204 [2020-10-14 21:32:48,479 INFO L226 Difference]: Without dead ends: 2006 [2020-10-14 21:32:48,494 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 21:32:48,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2006 states. [2020-10-14 21:32:48,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2006 to 1920. [2020-10-14 21:32:48,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1920 states. [2020-10-14 21:32:48,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 3311 transitions. [2020-10-14 21:32:48,739 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 3311 transitions. Word has length 65 [2020-10-14 21:32:48,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:32:48,741 INFO L479 AbstractCegarLoop]: Abstraction has 1920 states and 3311 transitions. [2020-10-14 21:32:48,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:32:48,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 3311 transitions. [2020-10-14 21:32:48,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 21:32:48,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:32:48,750 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:32:48,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:32:48,751 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:32:48,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:32:48,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1729921401, now seen corresponding path program 1 times [2020-10-14 21:32:48,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:32:48,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13743500] [2020-10-14 21:32:48,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:32:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:32:48,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:48,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:50,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:50,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:32:50,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 21:32:50,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:32:50,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2170 [2020-10-14 21:32:50,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:32:50,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:32:50,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:32:50,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 21:32:50,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 21:32:50,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 21:32:51,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:32:51,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:32:51,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:51,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:32:51,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:32:51,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:32:51,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:32:51,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:32:51,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:32:51,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:32:51,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:32:51,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:32:51,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:32:51,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:32:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:32:51,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:51,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:32:51,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:32:51,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:32:51,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 21:32:51,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:32:51,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:32:51,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:32:51,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:32:51,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 21:32:51,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:32:51,370 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 57 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:32:51,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13743500] [2020-10-14 21:32:51,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:32:51,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:32:51,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588148691] [2020-10-14 21:32:51,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:32:51,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:32:51,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:32:51,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:32:51,377 INFO L87 Difference]: Start difference. First operand 1920 states and 3311 transitions. Second operand 5 states. [2020-10-14 21:33:10,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:33:10,265 INFO L93 Difference]: Finished difference Result 5543 states and 9678 transitions. [2020-10-14 21:33:10,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:33:10,266 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-14 21:33:10,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:33:10,291 INFO L225 Difference]: With dead ends: 5543 [2020-10-14 21:33:10,292 INFO L226 Difference]: Without dead ends: 3629 [2020-10-14 21:33:10,300 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 21:33:10,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3629 states. [2020-10-14 21:33:10,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3629 to 3603. [2020-10-14 21:33:10,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3603 states. [2020-10-14 21:33:10,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3603 states to 3603 states and 5379 transitions. [2020-10-14 21:33:10,434 INFO L78 Accepts]: Start accepts. Automaton has 3603 states and 5379 transitions. Word has length 134 [2020-10-14 21:33:10,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:33:10,436 INFO L479 AbstractCegarLoop]: Abstraction has 3603 states and 5379 transitions. [2020-10-14 21:33:10,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:33:10,436 INFO L276 IsEmpty]: Start isEmpty. Operand 3603 states and 5379 transitions. [2020-10-14 21:33:10,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-14 21:33:10,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:33:10,441 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:33:10,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:33:10,441 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:33:10,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:33:10,442 INFO L82 PathProgramCache]: Analyzing trace with hash 2038343489, now seen corresponding path program 1 times [2020-10-14 21:33:10,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:33:10,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972519885] [2020-10-14 21:33:10,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:33:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:33:10,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:10,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:11,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:33:11,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 21:33:11,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:33:11,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1072 [2020-10-14 21:33:11,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:33:11,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:33:11,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:33:11,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-14 21:33:11,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 21:33:11,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:33:11,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:33:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:33:11,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:11,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:33:11,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:33:11,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:33:11,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:33:11,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:33:11,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:33:11,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:33:11,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:33:11,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:33:11,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:33:11,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:33:11,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:33:11,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:11,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:33:11,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 21:33:11,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:33:11,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 21:33:11,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:33:11,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:33:11,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:33:11,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:33:11,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 21:33:11,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:33:11,872 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 57 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:33:11,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972519885] [2020-10-14 21:33:11,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:33:11,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:33:11,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032801424] [2020-10-14 21:33:11,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:33:11,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:33:11,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:33:11,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:33:11,879 INFO L87 Difference]: Start difference. First operand 3603 states and 5379 transitions. Second operand 5 states. [2020-10-14 21:33:31,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:33:31,602 INFO L93 Difference]: Finished difference Result 8867 states and 13821 transitions. [2020-10-14 21:33:31,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:33:31,607 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-10-14 21:33:31,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:33:31,644 INFO L225 Difference]: With dead ends: 8867 [2020-10-14 21:33:31,644 INFO L226 Difference]: Without dead ends: 5270 [2020-10-14 21:33:31,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:33:31,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5270 states. [2020-10-14 21:33:31,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5270 to 5249. [2020-10-14 21:33:31,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5249 states. [2020-10-14 21:33:31,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5249 states to 5249 states and 7412 transitions. [2020-10-14 21:33:31,869 INFO L78 Accepts]: Start accepts. Automaton has 5249 states and 7412 transitions. Word has length 138 [2020-10-14 21:33:31,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:33:31,873 INFO L479 AbstractCegarLoop]: Abstraction has 5249 states and 7412 transitions. [2020-10-14 21:33:31,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:33:31,874 INFO L276 IsEmpty]: Start isEmpty. Operand 5249 states and 7412 transitions. [2020-10-14 21:33:31,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-14 21:33:31,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:33:31,885 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:33:31,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:33:31,886 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:33:31,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:33:31,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1473817253, now seen corresponding path program 1 times [2020-10-14 21:33:31,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:33:31,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481261638] [2020-10-14 21:33:31,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:33:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:33:31,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:32,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:33,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:33:33,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-14 21:33:33,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:33:33,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1138 [2020-10-14 21:33:33,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:33:33,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:33:33,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:33:33,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:33:33,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 21:33:33,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:33:33,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:33:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:33:33,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:33,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:33:33,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:33:33,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:33:33,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 21:33:33,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:33:33,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:33:33,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:33:33,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:33:33,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:33:33,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:33:33,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:33:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:33:33,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:33,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:33:33,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 21:33:33,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:33:33,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-14 21:33:33,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:33:33,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:33:33,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:33:33,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:33:33,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 21:33:33,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:33:33,589 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:33:33,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481261638] [2020-10-14 21:33:33,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:33:33,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:33:33,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867550103] [2020-10-14 21:33:33,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:33:33,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:33:33,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:33:33,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:33:33,593 INFO L87 Difference]: Start difference. First operand 5249 states and 7412 transitions. Second operand 7 states. [2020-10-14 21:34:05,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:34:05,559 INFO L93 Difference]: Finished difference Result 15704 states and 22980 transitions. [2020-10-14 21:34:05,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:34:05,560 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 155 [2020-10-14 21:34:05,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:34:05,616 INFO L225 Difference]: With dead ends: 15704 [2020-10-14 21:34:05,616 INFO L226 Difference]: Without dead ends: 10461 [2020-10-14 21:34:05,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:34:05,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10461 states. [2020-10-14 21:34:05,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10461 to 10393. [2020-10-14 21:34:05,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10393 states. [2020-10-14 21:34:05,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10393 states to 10393 states and 14066 transitions. [2020-10-14 21:34:05,979 INFO L78 Accepts]: Start accepts. Automaton has 10393 states and 14066 transitions. Word has length 155 [2020-10-14 21:34:05,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:34:05,980 INFO L479 AbstractCegarLoop]: Abstraction has 10393 states and 14066 transitions. [2020-10-14 21:34:05,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:34:05,980 INFO L276 IsEmpty]: Start isEmpty. Operand 10393 states and 14066 transitions. [2020-10-14 21:34:05,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-14 21:34:05,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:34:05,983 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:34:05,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:34:05,983 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:34:05,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:34:05,984 INFO L82 PathProgramCache]: Analyzing trace with hash -2007593031, now seen corresponding path program 1 times [2020-10-14 21:34:05,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:34:05,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406469045] [2020-10-14 21:34:05,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:34:06,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:34:06,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:34:06,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:34:06,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:34:06,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-14 21:34:06,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:34:06,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 778 [2020-10-14 21:34:06,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:34:06,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:34:06,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:34:06,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:34:06,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-14 21:34:06,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:34:06,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:34:06,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:34:06,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:34:06,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:34:06,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:34:06,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:34:06,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:34:06,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:34:06,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:34:06,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:34:06,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:34:06,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:34:06,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:34:06,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:34:06,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:34:06,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:34:07,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:34:07,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 21:34:07,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:34:07,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-14 21:34:07,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:34:07,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:34:07,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:34:07,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:34:07,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 21:34:07,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:34:07,219 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:34:07,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406469045] [2020-10-14 21:34:07,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:34:07,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:34:07,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233867117] [2020-10-14 21:34:07,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:34:07,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:34:07,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:34:07,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:34:07,222 INFO L87 Difference]: Start difference. First operand 10393 states and 14066 transitions. Second operand 6 states. [2020-10-14 21:34:31,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:34:31,828 INFO L93 Difference]: Finished difference Result 30680 states and 42310 transitions. [2020-10-14 21:34:31,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:34:31,831 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2020-10-14 21:34:31,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:34:32,019 INFO L225 Difference]: With dead ends: 30680 [2020-10-14 21:34:32,019 INFO L226 Difference]: Without dead ends: 20293 [2020-10-14 21:34:32,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:34:32,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20293 states. [2020-10-14 21:34:32,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20293 to 20272. [2020-10-14 21:34:32,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20272 states. [2020-10-14 21:34:32,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20272 states to 20272 states and 26796 transitions. [2020-10-14 21:34:32,654 INFO L78 Accepts]: Start accepts. Automaton has 20272 states and 26796 transitions. Word has length 165 [2020-10-14 21:34:32,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:34:32,655 INFO L479 AbstractCegarLoop]: Abstraction has 20272 states and 26796 transitions. [2020-10-14 21:34:32,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:34:32,655 INFO L276 IsEmpty]: Start isEmpty. Operand 20272 states and 26796 transitions. [2020-10-14 21:34:32,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-14 21:34:32,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:34:32,660 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:34:32,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:34:32,660 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:34:32,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:34:32,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1689820503, now seen corresponding path program 1 times [2020-10-14 21:34:32,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:34:32,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424879167] [2020-10-14 21:34:32,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:34:32,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:34:32,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:34:33,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:34:34,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:34:34,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 21:34:34,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:34:34,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1820 [2020-10-14 21:34:34,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:34:34,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:34:34,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:34:34,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:34:34,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 21:34:34,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:34:34,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:34:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:34:34,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:34:34,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:34:34,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:34:34,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:34:34,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:34:34,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:34:34,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:34:34,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:34:34,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:34:34,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:34:34,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:34:34,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:34:34,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:34:34,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:34:34,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:34:34,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 21:34:34,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:34:34,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-14 21:34:34,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:34:34,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:34:34,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:34:34,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:34:34,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 21:34:34,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:34:35,101 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:34:35,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424879167] [2020-10-14 21:34:35,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:34:35,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 21:34:35,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487649278] [2020-10-14 21:34:35,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:34:35,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:34:35,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:34:35,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:34:35,106 INFO L87 Difference]: Start difference. First operand 20272 states and 26796 transitions. Second operand 8 states. [2020-10-14 21:35:04,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:35:04,636 INFO L93 Difference]: Finished difference Result 67180 states and 94210 transitions. [2020-10-14 21:35:04,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:35:04,639 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 174 [2020-10-14 21:35:04,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:35:04,808 INFO L225 Difference]: With dead ends: 67180 [2020-10-14 21:35:04,808 INFO L226 Difference]: Without dead ends: 46914 [2020-10-14 21:35:04,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-14 21:35:04,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46914 states. [2020-10-14 21:35:05,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46914 to 46096. [2020-10-14 21:35:05,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46096 states. [2020-10-14 21:35:05,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46096 states to 46096 states and 59624 transitions. [2020-10-14 21:35:05,945 INFO L78 Accepts]: Start accepts. Automaton has 46096 states and 59624 transitions. Word has length 174 [2020-10-14 21:35:05,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:35:05,945 INFO L479 AbstractCegarLoop]: Abstraction has 46096 states and 59624 transitions. [2020-10-14 21:35:05,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:35:05,946 INFO L276 IsEmpty]: Start isEmpty. Operand 46096 states and 59624 transitions. [2020-10-14 21:35:05,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-14 21:35:05,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:35:05,949 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:35:05,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:35:05,949 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:35:05,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:35:05,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1887476717, now seen corresponding path program 1 times [2020-10-14 21:35:05,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:35:05,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88507316] [2020-10-14 21:35:05,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:35:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:35:06,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:35:06,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:35:06,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:35:08,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:35:08,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-14 21:35:08,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:35:08,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2576 [2020-10-14 21:35:08,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:35:08,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:35:08,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:35:08,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:35:08,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:35:08,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:35:08,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:35:08,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:35:08,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:35:08,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:35:08,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:35:08,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:35:08,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:35:08,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:35:08,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:35:08,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:35:08,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:35:08,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:35:08,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:35:08,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:35:08,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:35:08,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:35:09,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:35:09,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 21:35:09,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:35:09,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-14 21:35:09,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:35:09,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:35:09,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:35:09,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:35:09,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 21:35:09,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:35:09,322 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:35:09,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88507316] [2020-10-14 21:35:09,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:35:09,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:35:09,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298917388] [2020-10-14 21:35:09,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:35:09,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:35:09,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:35:09,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:35:09,329 INFO L87 Difference]: Start difference. First operand 46096 states and 59624 transitions. Second operand 7 states. [2020-10-14 21:35:34,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:35:34,631 INFO L93 Difference]: Finished difference Result 84690 states and 112188 transitions. [2020-10-14 21:35:34,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:35:34,636 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 185 [2020-10-14 21:35:34,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:35:34,799 INFO L225 Difference]: With dead ends: 84690 [2020-10-14 21:35:34,800 INFO L226 Difference]: Without dead ends: 46744 [2020-10-14 21:35:34,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:35:34,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46744 states. [2020-10-14 21:35:35,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46744 to 46711. [2020-10-14 21:35:35,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46711 states. [2020-10-14 21:35:35,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46711 states to 46711 states and 61604 transitions. [2020-10-14 21:35:35,731 INFO L78 Accepts]: Start accepts. Automaton has 46711 states and 61604 transitions. Word has length 185 [2020-10-14 21:35:35,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:35:35,731 INFO L479 AbstractCegarLoop]: Abstraction has 46711 states and 61604 transitions. [2020-10-14 21:35:35,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:35:35,732 INFO L276 IsEmpty]: Start isEmpty. Operand 46711 states and 61604 transitions. [2020-10-14 21:35:35,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-14 21:35:35,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:35:35,739 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 21:35:35,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:35:35,740 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:35:35,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:35:35,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1655721530, now seen corresponding path program 1 times [2020-10-14 21:35:35,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:35:35,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849761125] [2020-10-14 21:35:35,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:35:35,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:35:35,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:35:37,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:35:37,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:35:38,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:35:38,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:35:40,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:35:40,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-10-14 21:35:40,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:35:40,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4267 [2020-10-14 21:35:40,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:35:40,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:35:40,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:35:40,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:35:40,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-14 21:35:40,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:35:40,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:35:40,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:35:40,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:35:40,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:35:40,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:35:40,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:35:40,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:35:40,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:35:40,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:35:40,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:35:40,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:35:40,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:35:40,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:35:40,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:35:40,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:35:40,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:35:40,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:35:40,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 21:35:40,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:35:40,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-14 21:35:40,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:35:40,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:35:40,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:35:40,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:35:40,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 21:35:40,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:35:40,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 21:35:40,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:35:40,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:35:40,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:35:40,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:35:40,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 21:35:40,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:35:40,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 335 [2020-10-14 21:35:40,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:35:40,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:35:40,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:35:40,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:35:40,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 21:35:40,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:35:41,161 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 117 proven. 2 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-14 21:35:41,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849761125] [2020-10-14 21:35:41,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:35:41,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:35:41,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14287961] [2020-10-14 21:35:41,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:35:41,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:35:41,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:35:41,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:35:41,164 INFO L87 Difference]: Start difference. First operand 46711 states and 61604 transitions. Second operand 7 states.