/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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_label14.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:26:35,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:26:35,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:26:35,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:26:35,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:26:35,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:26:35,681 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:26:35,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:26:35,684 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:26:35,685 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:26:35,686 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:26:35,687 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:26:35,687 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:26:35,688 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:26:35,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:26:35,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:26:35,691 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:26:35,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:26:35,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:26:35,695 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:26:35,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:26:35,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:26:35,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:26:35,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:26:35,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:26:35,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:26:35,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:26:35,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:26:35,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:26:35,705 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:26:35,705 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:26:35,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:26:35,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:26:35,707 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:26:35,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:26:35,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:26:35,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:26:35,709 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:26:35,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:26:35,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:26:35,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:26:35,711 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 03:26:35,744 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:26:35,744 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:26:35,745 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:26:35,745 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:26:35,745 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:26:35,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:26:35,746 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:26:35,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:26:35,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:26:35,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:26:35,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:26:35,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:26:35,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:26:35,747 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:26:35,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:26:35,747 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:26:35,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:26:35,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:26:35,748 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:26:35,748 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:26:35,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:26:35,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:26:35,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:26:35,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:26:35,749 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:26:35,749 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:26:35,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:26:35,750 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:26:35,750 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:26:35,750 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 03:26:36,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:26:36,095 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:26:36,100 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:26:36,102 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:26:36,102 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:26:36,103 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label14.c [2020-10-14 03:26:36,176 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/861b3ce28/051c701a81bd402cbbdd7d34fd4de71a/FLAG4508a50b6 [2020-10-14 03:26:36,877 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:26:36,878 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label14.c [2020-10-14 03:26:36,901 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/861b3ce28/051c701a81bd402cbbdd7d34fd4de71a/FLAG4508a50b6 [2020-10-14 03:26:37,078 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/861b3ce28/051c701a81bd402cbbdd7d34fd4de71a [2020-10-14 03:26:37,089 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:26:37,092 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:26:37,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:26:37,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:26:37,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:26:37,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:26:37" (1/1) ... [2020-10-14 03:26:37,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66948a6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:26:37, skipping insertion in model container [2020-10-14 03:26:37,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:26:37" (1/1) ... [2020-10-14 03:26:37,112 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:26:37,192 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:26:38,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:26:38,390 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:26:39,063 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:26:39,088 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:26:39,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:26:39 WrapperNode [2020-10-14 03:26:39,090 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:26:39,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:26:39,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:26:39,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:26:39,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:26:39" (1/1) ... [2020-10-14 03:26:39,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:26:39" (1/1) ... [2020-10-14 03:26:39,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:26:39" (1/1) ... [2020-10-14 03:26:39,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:26:39" (1/1) ... [2020-10-14 03:26:39,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:26:39" (1/1) ... [2020-10-14 03:26:39,297 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:26:39" (1/1) ... [2020-10-14 03:26:39,335 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:26:39" (1/1) ... [2020-10-14 03:26:39,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:26:39,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:26:39,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:26:39,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:26:39,364 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:26:39" (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 03:26:39,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:26:39,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:26:39,460 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:26:39,460 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:26:39,460 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:26:39,461 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:26:39,462 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:26:39,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:26:39,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:26:39,464 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:26:39,464 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:26:39,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:26:39,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:26:45,834 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:26:45,835 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:26:45,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:26:45 BoogieIcfgContainer [2020-10-14 03:26:45,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:26:45,847 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:26:45,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:26:45,852 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:26:45,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:26:37" (1/3) ... [2020-10-14 03:26:45,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51147a21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:26:45, skipping insertion in model container [2020-10-14 03:26:45,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:26:39" (2/3) ... [2020-10-14 03:26:45,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51147a21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:26:45, skipping insertion in model container [2020-10-14 03:26:45,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:26:45" (3/3) ... [2020-10-14 03:26:45,856 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label14.c [2020-10-14 03:26:45,869 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:26:45,887 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:26:45,907 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:26:45,938 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:26:45,938 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:26:45,938 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:26:45,939 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:26:45,939 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:26:45,939 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:26:45,939 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:26:45,939 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:26:45,974 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 03:26:45,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 03:26:45,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:26:45,985 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] [2020-10-14 03:26:45,985 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:26:45,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:26:45,993 INFO L82 PathProgramCache]: Analyzing trace with hash -436791267, now seen corresponding path program 1 times [2020-10-14 03:26:46,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:26:46,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836029511] [2020-10-14 03:26:46,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:26:46,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:46,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:46,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:46,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 03:26:46,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:46,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-10-14 03:26:46,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:46,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:46,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:26:46,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:26:46,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 03:26:46,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 03:26:46,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:26:46,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:46,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:46,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:46,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:26:46,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:46,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 03:26:46,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:46,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:46,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:26:46,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:46,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:26:46,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:46,747 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 03:26:46,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836029511] [2020-10-14 03:26:46,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:26:46,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:26:46,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496434910] [2020-10-14 03:26:46,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:26:46,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:26:46,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:26:46,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:26:46,782 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 03:26:55,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:26:55,336 INFO L93 Difference]: Finished difference Result 1224 states and 2200 transitions. [2020-10-14 03:26:55,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:26:55,339 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-14 03:26:55,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:26:55,376 INFO L225 Difference]: With dead ends: 1224 [2020-10-14 03:26:55,376 INFO L226 Difference]: Without dead ends: 708 [2020-10-14 03:26:55,386 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 03:26:55,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-10-14 03:26:55,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 694. [2020-10-14 03:26:55,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2020-10-14 03:26:55,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1080 transitions. [2020-10-14 03:26:55,513 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1080 transitions. Word has length 21 [2020-10-14 03:26:55,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:26:55,514 INFO L479 AbstractCegarLoop]: Abstraction has 694 states and 1080 transitions. [2020-10-14 03:26:55,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:26:55,514 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1080 transitions. [2020-10-14 03:26:55,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-14 03:26:55,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:26:55,520 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 03:26:55,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:26:55,521 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:26:55,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:26:55,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1007316285, now seen corresponding path program 1 times [2020-10-14 03:26:55,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:26:55,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095203102] [2020-10-14 03:26:55,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:26:55,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:55,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:55,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:56,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:56,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:56,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 03:26:56,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:26:56,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1188 [2020-10-14 03:26:56,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:56,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:56,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:56,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 03:26:56,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 03:26:56,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:26:56,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:26:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:56,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:56,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:56,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:26:56,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:56,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:26:56,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:56,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:56,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:26:56,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:56,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:26:56,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:26:56,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:26:56,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:56,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:56,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:56,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 03:26:56,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:56,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 03:26:56,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:56,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:56,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:26:56,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:56,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 03:26:56,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:57,044 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:26:57,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095203102] [2020-10-14 03:26:57,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:26:57,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:26:57,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322917817] [2020-10-14 03:26:57,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:26:57,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:26:57,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:26:57,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:26:57,052 INFO L87 Difference]: Start difference. First operand 694 states and 1080 transitions. Second operand 5 states. [2020-10-14 03:27:03,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:27:03,320 INFO L93 Difference]: Finished difference Result 1695 states and 2713 transitions. [2020-10-14 03:27:03,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:27:03,322 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2020-10-14 03:27:03,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:27:03,328 INFO L225 Difference]: With dead ends: 1695 [2020-10-14 03:27:03,329 INFO L226 Difference]: Without dead ends: 1007 [2020-10-14 03:27:03,331 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 03:27:03,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2020-10-14 03:27:03,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 1005. [2020-10-14 03:27:03,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1005 states. [2020-10-14 03:27:03,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1362 transitions. [2020-10-14 03:27:03,378 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1362 transitions. Word has length 91 [2020-10-14 03:27:03,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:27:03,379 INFO L479 AbstractCegarLoop]: Abstraction has 1005 states and 1362 transitions. [2020-10-14 03:27:03,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:27:03,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1362 transitions. [2020-10-14 03:27:03,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 03:27:03,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:27:03,383 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 03:27:03,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:27:03,384 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:27:03,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:27:03,384 INFO L82 PathProgramCache]: Analyzing trace with hash 369389085, now seen corresponding path program 1 times [2020-10-14 03:27:03,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:27:03,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1452890193] [2020-10-14 03:27:03,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:27:03,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:03,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:03,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:04,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:04,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 03:27:04,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:27:04,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 785 [2020-10-14 03:27:04,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:04,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:04,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:27:04,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 03:27:04,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 03:27:04,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:04,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:27:04,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:04,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:04,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:04,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:27:04,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:04,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:27:04,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:04,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:04,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:04,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:04,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:04,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:04,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:27:04,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:04,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:04,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:04,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 03:27:04,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:04,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-14 03:27:04,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:04,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:04,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:27:04,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:04,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 03:27:04,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:04,503 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:27:04,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1452890193] [2020-10-14 03:27:04,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:27:04,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:27:04,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144424026] [2020-10-14 03:27:04,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:27:04,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:27:04,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:27:04,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:27:04,506 INFO L87 Difference]: Start difference. First operand 1005 states and 1362 transitions. Second operand 5 states. [2020-10-14 03:27:13,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:27:13,217 INFO L93 Difference]: Finished difference Result 2017 states and 2942 transitions. [2020-10-14 03:27:13,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:27:13,218 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-14 03:27:13,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:27:13,227 INFO L225 Difference]: With dead ends: 2017 [2020-10-14 03:27:13,227 INFO L226 Difference]: Without dead ends: 1327 [2020-10-14 03:27:13,229 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 03:27:13,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2020-10-14 03:27:13,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 1327. [2020-10-14 03:27:13,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1327 states. [2020-10-14 03:27:13,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 1744 transitions. [2020-10-14 03:27:13,268 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 1744 transitions. Word has length 104 [2020-10-14 03:27:13,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:27:13,269 INFO L479 AbstractCegarLoop]: Abstraction has 1327 states and 1744 transitions. [2020-10-14 03:27:13,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:27:13,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 1744 transitions. [2020-10-14 03:27:13,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-14 03:27:13,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:27:13,273 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 03:27:13,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:27:13,274 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:27:13,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:27:13,274 INFO L82 PathProgramCache]: Analyzing trace with hash 2125557984, now seen corresponding path program 1 times [2020-10-14 03:27:13,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:27:13,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625609414] [2020-10-14 03:27:13,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:27:13,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:13,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:13,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:14,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:14,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-14 03:27:14,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:27:14,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1260 [2020-10-14 03:27:14,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:14,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:14,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:27:14,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 03:27:14,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 03:27:14,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:27:14,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:27:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:14,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:14,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:14,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:27:14,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:14,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:27:14,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:14,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:14,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:14,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:14,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:14,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:14,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:27:14,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:14,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:14,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:14,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 03:27:14,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:14,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-14 03:27:14,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:14,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:14,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:27:14,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:14,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 03:27:14,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:14,938 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:27:14,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625609414] [2020-10-14 03:27:14,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:27:14,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:27:14,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872209497] [2020-10-14 03:27:14,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:27:14,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:27:14,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:27:14,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:27:14,944 INFO L87 Difference]: Start difference. First operand 1327 states and 1744 transitions. Second operand 5 states. [2020-10-14 03:27:21,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:27:21,698 INFO L93 Difference]: Finished difference Result 3270 states and 4442 transitions. [2020-10-14 03:27:21,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:27:21,702 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-10-14 03:27:21,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:27:21,715 INFO L225 Difference]: With dead ends: 3270 [2020-10-14 03:27:21,715 INFO L226 Difference]: Without dead ends: 2258 [2020-10-14 03:27:21,720 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 03:27:21,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2020-10-14 03:27:21,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 2256. [2020-10-14 03:27:21,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2256 states. [2020-10-14 03:27:21,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2256 states to 2256 states and 2774 transitions. [2020-10-14 03:27:21,784 INFO L78 Accepts]: Start accepts. Automaton has 2256 states and 2774 transitions. Word has length 137 [2020-10-14 03:27:21,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:27:21,785 INFO L479 AbstractCegarLoop]: Abstraction has 2256 states and 2774 transitions. [2020-10-14 03:27:21,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:27:21,785 INFO L276 IsEmpty]: Start isEmpty. Operand 2256 states and 2774 transitions. [2020-10-14 03:27:21,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-14 03:27:21,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:27:21,789 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 03:27:21,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:27:21,789 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:27:21,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:27:21,790 INFO L82 PathProgramCache]: Analyzing trace with hash -436609504, now seen corresponding path program 1 times [2020-10-14 03:27:21,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:27:21,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277047762] [2020-10-14 03:27:21,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:27:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:21,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:22,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:22,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:23,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:23,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:23,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 03:27:23,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:27:23,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1267 [2020-10-14 03:27:23,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:23,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:23,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:27:23,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-14 03:27:23,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 03:27:23,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:23,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:27:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:23,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:23,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:23,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:27:23,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:23,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:27:23,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:23,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:23,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:23,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:23,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:23,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:23,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:27:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:23,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:23,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:23,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 03:27:23,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:23,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 03:27:23,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:23,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:23,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:27:23,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:23,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 03:27:23,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:23,398 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:27:23,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277047762] [2020-10-14 03:27:23,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:27:23,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:27:23,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899486621] [2020-10-14 03:27:23,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:27:23,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:27:23,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:27:23,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:27:23,401 INFO L87 Difference]: Start difference. First operand 2256 states and 2774 transitions. Second operand 5 states. [2020-10-14 03:27:30,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:27:30,489 INFO L93 Difference]: Finished difference Result 5131 states and 6526 transitions. [2020-10-14 03:27:30,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:27:30,491 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-10-14 03:27:30,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:27:30,509 INFO L225 Difference]: With dead ends: 5131 [2020-10-14 03:27:30,509 INFO L226 Difference]: Without dead ends: 3190 [2020-10-14 03:27:30,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 03:27:30,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3190 states. [2020-10-14 03:27:30,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3190 to 3190. [2020-10-14 03:27:30,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3190 states. [2020-10-14 03:27:30,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3190 states to 3190 states and 4009 transitions. [2020-10-14 03:27:30,595 INFO L78 Accepts]: Start accepts. Automaton has 3190 states and 4009 transitions. Word has length 144 [2020-10-14 03:27:30,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:27:30,595 INFO L479 AbstractCegarLoop]: Abstraction has 3190 states and 4009 transitions. [2020-10-14 03:27:30,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:27:30,596 INFO L276 IsEmpty]: Start isEmpty. Operand 3190 states and 4009 transitions. [2020-10-14 03:27:30,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 03:27:30,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:27:30,598 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 03:27:30,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:27:30,599 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:27:30,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:27:30,599 INFO L82 PathProgramCache]: Analyzing trace with hash -212784395, now seen corresponding path program 1 times [2020-10-14 03:27:30,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:27:30,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290051520] [2020-10-14 03:27:30,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:27:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:30,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:30,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:31,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:31,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 03:27:31,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:27:31,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1084 [2020-10-14 03:27:31,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:31,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:31,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:27:31,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-14 03:27:31,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 03:27:31,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:31,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:27:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:31,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:31,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:31,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:27:31,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:31,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 03:27:31,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:31,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:31,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:31,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:31,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:31,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:31,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:27:31,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:31,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:32,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:32,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 03:27:32,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:32,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-14 03:27:32,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:32,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:32,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:27:32,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:32,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 03:27:32,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:32,119 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:27:32,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290051520] [2020-10-14 03:27:32,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:27:32,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:27:32,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960357717] [2020-10-14 03:27:32,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:27:32,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:27:32,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:27:32,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:27:32,124 INFO L87 Difference]: Start difference. First operand 3190 states and 4009 transitions. Second operand 5 states. [2020-10-14 03:27:41,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:27:41,879 INFO L93 Difference]: Finished difference Result 7005 states and 9167 transitions. [2020-10-14 03:27:41,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:27:41,883 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-14 03:27:41,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:27:41,902 INFO L225 Difference]: With dead ends: 7005 [2020-10-14 03:27:41,902 INFO L226 Difference]: Without dead ends: 4130 [2020-10-14 03:27:41,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 03:27:41,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4130 states. [2020-10-14 03:27:41,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4130 to 4127. [2020-10-14 03:27:41,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4127 states. [2020-10-14 03:27:42,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4127 states to 4127 states and 5130 transitions. [2020-10-14 03:27:42,008 INFO L78 Accepts]: Start accepts. Automaton has 4127 states and 5130 transitions. Word has length 150 [2020-10-14 03:27:42,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:27:42,009 INFO L479 AbstractCegarLoop]: Abstraction has 4127 states and 5130 transitions. [2020-10-14 03:27:42,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:27:42,009 INFO L276 IsEmpty]: Start isEmpty. Operand 4127 states and 5130 transitions. [2020-10-14 03:27:42,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-14 03:27:42,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:27:42,012 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 03:27:42,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:27:42,012 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:27:42,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:27:42,013 INFO L82 PathProgramCache]: Analyzing trace with hash 66993, now seen corresponding path program 1 times [2020-10-14 03:27:42,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:27:42,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436284816] [2020-10-14 03:27:42,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:27:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:42,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:42,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:42,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:42,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-14 03:27:42,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:27:42,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 885 [2020-10-14 03:27:42,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:42,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:42,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:27:42,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-14 03:27:42,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 03:27:42,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:43,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:27:43,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:43,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:43,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:43,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:27:43,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:43,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:27:43,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:43,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:43,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:43,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:43,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:43,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:43,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:27:43,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:43,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:43,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:43,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 03:27:43,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:43,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-14 03:27:43,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:43,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:43,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:27:43,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:43,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 03:27:43,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:43,400 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:27:43,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436284816] [2020-10-14 03:27:43,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:27:43,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 03:27:43,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957468783] [2020-10-14 03:27:43,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 03:27:43,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:27:43,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 03:27:43,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:27:43,406 INFO L87 Difference]: Start difference. First operand 4127 states and 5130 transitions. Second operand 6 states. [2020-10-14 03:27:53,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:27:53,791 INFO L93 Difference]: Finished difference Result 8866 states and 11400 transitions. [2020-10-14 03:27:53,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 03:27:53,792 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2020-10-14 03:27:53,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:27:53,814 INFO L225 Difference]: With dead ends: 8866 [2020-10-14 03:27:53,814 INFO L226 Difference]: Without dead ends: 5054 [2020-10-14 03:27:53,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:27:53,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5054 states. [2020-10-14 03:27:53,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5054 to 5054. [2020-10-14 03:27:53,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5054 states. [2020-10-14 03:27:53,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5054 states to 5054 states and 6407 transitions. [2020-10-14 03:27:53,957 INFO L78 Accepts]: Start accepts. Automaton has 5054 states and 6407 transitions. Word has length 164 [2020-10-14 03:27:53,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:27:53,957 INFO L479 AbstractCegarLoop]: Abstraction has 5054 states and 6407 transitions. [2020-10-14 03:27:53,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 03:27:53,958 INFO L276 IsEmpty]: Start isEmpty. Operand 5054 states and 6407 transitions. [2020-10-14 03:27:53,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-14 03:27:53,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:27:53,965 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 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] [2020-10-14 03:27:53,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:27:53,965 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:27:53,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:27:53,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1388877794, now seen corresponding path program 1 times [2020-10-14 03:27:53,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:27:53,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103397373] [2020-10-14 03:27:53,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:27:54,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:54,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:54,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:54,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:56,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:59,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:59,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-14 03:27:59,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:27:59,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 03:27:59,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:59,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:59,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:27:59,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 03:27:59,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 03:27:59,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:59,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:27:59,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:59,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:59,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:59,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:27:59,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:59,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:27:59,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:59,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:59,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:59,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:59,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:59,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:59,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:27:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:59,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:59,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:59,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 03:27:59,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:59,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 03:27:59,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:59,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:59,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:27:59,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:59,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 03:27:59,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:59,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 03:27:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:59,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:59,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:59,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 03:27:59,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:59,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-14 03:27:59,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:59,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:59,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:27:59,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:27:59,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 03:27:59,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:27:59,804 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:27:59,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103397373] [2020-10-14 03:27:59,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:27:59,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:27:59,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81549044] [2020-10-14 03:27:59,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:27:59,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:27:59,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:27:59,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:27:59,807 INFO L87 Difference]: Start difference. First operand 5054 states and 6407 transitions. Second operand 7 states. [2020-10-14 03:28:13,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:28:13,598 INFO L93 Difference]: Finished difference Result 14285 states and 18870 transitions. [2020-10-14 03:28:13,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:28:13,600 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2020-10-14 03:28:13,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:28:13,656 INFO L225 Difference]: With dead ends: 14285 [2020-10-14 03:28:13,657 INFO L226 Difference]: Without dead ends: 9546 [2020-10-14 03:28:13,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:28:13,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9546 states. [2020-10-14 03:28:13,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9546 to 9446. [2020-10-14 03:28:13,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9446 states. [2020-10-14 03:28:13,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9446 states to 9446 states and 11825 transitions. [2020-10-14 03:28:13,945 INFO L78 Accepts]: Start accepts. Automaton has 9446 states and 11825 transitions. Word has length 203 [2020-10-14 03:28:13,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:28:13,946 INFO L479 AbstractCegarLoop]: Abstraction has 9446 states and 11825 transitions. [2020-10-14 03:28:13,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:28:13,946 INFO L276 IsEmpty]: Start isEmpty. Operand 9446 states and 11825 transitions. [2020-10-14 03:28:13,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-14 03:28:13,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:28:13,957 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:28:13,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 03:28:13,957 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:28:13,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:28:13,958 INFO L82 PathProgramCache]: Analyzing trace with hash -540091892, now seen corresponding path program 1 times [2020-10-14 03:28:13,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:28:13,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435416765] [2020-10-14 03:28:13,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:28:14,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:14,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:14,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:14,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:15,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:16,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:17,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:17,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-14 03:28:17,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:28:17,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3797 [2020-10-14 03:28:17,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:17,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:17,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:28:17,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-14 03:28:17,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 03:28:17,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:28:17,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:28:17,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:17,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:17,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:17,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:28:17,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:17,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:28:17,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:17,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:17,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:28:17,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:17,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:28:17,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:17,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:28:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:18,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:18,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:18,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 03:28:18,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:18,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-14 03:28:18,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:18,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:18,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:28:18,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:18,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 03:28:18,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:18,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-14 03:28:18,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:18,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:18,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:18,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 03:28:18,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:18,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-14 03:28:18,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:18,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:18,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:28:18,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:28:18,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 03:28:18,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:18,630 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:28:18,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435416765] [2020-10-14 03:28:18,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:28:18,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:28:18,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772322862] [2020-10-14 03:28:18,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:28:18,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:28:18,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:28:18,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:28:18,642 INFO L87 Difference]: Start difference. First operand 9446 states and 11825 transitions. Second operand 7 states. [2020-10-14 03:28:35,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:28:35,121 INFO L93 Difference]: Finished difference Result 30066 states and 41667 transitions. [2020-10-14 03:28:35,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:28:35,124 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 245 [2020-10-14 03:28:35,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:28:35,212 INFO L225 Difference]: With dead ends: 30066 [2020-10-14 03:28:35,212 INFO L226 Difference]: Without dead ends: 19638 [2020-10-14 03:28:35,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:28:35,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19638 states. [2020-10-14 03:28:35,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19638 to 15092. [2020-10-14 03:28:35,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15092 states. [2020-10-14 03:28:35,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15092 states to 15092 states and 18072 transitions. [2020-10-14 03:28:35,776 INFO L78 Accepts]: Start accepts. Automaton has 15092 states and 18072 transitions. Word has length 245 [2020-10-14 03:28:35,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:28:35,777 INFO L479 AbstractCegarLoop]: Abstraction has 15092 states and 18072 transitions. [2020-10-14 03:28:35,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:28:35,777 INFO L276 IsEmpty]: Start isEmpty. Operand 15092 states and 18072 transitions. [2020-10-14 03:28:35,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-14 03:28:35,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:28:35,786 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:28:35,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 03:28:35,786 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:28:35,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:28:35,787 INFO L82 PathProgramCache]: Analyzing trace with hash -619785957, now seen corresponding path program 1 times [2020-10-14 03:28:35,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:28:35,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302628095] [2020-10-14 03:28:35,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:28:35,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:35,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:35,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:37,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:37,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:39,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:40,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:40,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-14 03:28:40,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:28:40,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4953 [2020-10-14 03:28:40,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:40,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:40,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:28:40,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-14 03:28:40,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 03:28:40,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:28:40,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:28:40,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:40,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:40,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:40,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:28:40,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:40,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:28:40,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:40,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:40,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:28:40,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:40,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:28:40,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:40,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:28:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:41,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:41,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:41,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 03:28:41,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:41,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-14 03:28:41,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:41,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:41,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:28:41,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:28:41,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 03:28:41,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:28:41,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-14 03:28:41,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:41,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:41,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:28:41,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 03:28:41,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:28:41,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-14 03:28:41,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:28:41,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:28:41,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:28:41,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:28:41,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 03:28:41,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:28:41,558 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:28:41,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302628095] [2020-10-14 03:28:41,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:28:41,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:28:41,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221142015] [2020-10-14 03:28:41,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:28:41,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:28:41,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:28:41,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:28:41,561 INFO L87 Difference]: Start difference. First operand 15092 states and 18072 transitions. Second operand 7 states. [2020-10-14 03:28:54,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:28:54,695 INFO L93 Difference]: Finished difference Result 38742 states and 48169 transitions. [2020-10-14 03:28:54,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:28:54,698 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 265 [2020-10-14 03:28:54,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:28:54,791 INFO L225 Difference]: With dead ends: 38742 [2020-10-14 03:28:54,792 INFO L226 Difference]: Without dead ends: 23933 [2020-10-14 03:28:54,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 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 03:28:54,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23933 states. [2020-10-14 03:28:55,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23933 to 20657. [2020-10-14 03:28:55,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20657 states. [2020-10-14 03:28:55,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20657 states to 20657 states and 23918 transitions. [2020-10-14 03:28:55,322 INFO L78 Accepts]: Start accepts. Automaton has 20657 states and 23918 transitions. Word has length 265 [2020-10-14 03:28:55,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:28:55,323 INFO L479 AbstractCegarLoop]: Abstraction has 20657 states and 23918 transitions. [2020-10-14 03:28:55,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:28:55,323 INFO L276 IsEmpty]: Start isEmpty. Operand 20657 states and 23918 transitions. [2020-10-14 03:28:55,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-14 03:28:55,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:28:55,335 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:28:55,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 03:28:55,335 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:28:55,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:28:55,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1396494231, now seen corresponding path program 1 times [2020-10-14 03:28:55,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:28:55,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652918503] [2020-10-14 03:28:55,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:28:55,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:55,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:55,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:55,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:57,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:00,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:00,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-14 03:29:00,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:29:00,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 03:29:00,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:00,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:00,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:00,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 03:29:00,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 03:29:00,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:00,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:29:00,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:00,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:00,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:00,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:29:00,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:00,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:29:00,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:00,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:00,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:29:00,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:00,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:29:00,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:00,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:29:00,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:00,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:00,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:00,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 03:29:00,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:00,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 03:29:00,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:00,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:00,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:29:00,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:00,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 03:29:00,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:00,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-14 03:29:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:00,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:00,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:00,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 03:29:00,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:00,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-14 03:29:00,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:00,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:00,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:00,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:29:00,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 03:29:00,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:01,098 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 146 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:29:01,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652918503] [2020-10-14 03:29:01,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:29:01,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:29:01,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121931440] [2020-10-14 03:29:01,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:29:01,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:29:01,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:29:01,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:29:01,102 INFO L87 Difference]: Start difference. First operand 20657 states and 23918 transitions. Second operand 7 states. [2020-10-14 03:29:17,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:29:17,091 INFO L93 Difference]: Finished difference Result 48611 states and 58585 transitions. [2020-10-14 03:29:17,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:29:17,093 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 272 [2020-10-14 03:29:17,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:29:17,197 INFO L225 Difference]: With dead ends: 48611 [2020-10-14 03:29:17,197 INFO L226 Difference]: Without dead ends: 28285 [2020-10-14 03:29:17,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:29:17,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28285 states. [2020-10-14 03:29:17,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28285 to 24480. [2020-10-14 03:29:17,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24480 states. [2020-10-14 03:29:17,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24480 states to 24480 states and 28044 transitions. [2020-10-14 03:29:17,783 INFO L78 Accepts]: Start accepts. Automaton has 24480 states and 28044 transitions. Word has length 272 [2020-10-14 03:29:17,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:29:17,783 INFO L479 AbstractCegarLoop]: Abstraction has 24480 states and 28044 transitions. [2020-10-14 03:29:17,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:29:17,783 INFO L276 IsEmpty]: Start isEmpty. Operand 24480 states and 28044 transitions. [2020-10-14 03:29:17,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-14 03:29:17,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:29:17,794 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:29:17,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 03:29:17,794 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:29:17,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:29:17,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1620859769, now seen corresponding path program 1 times [2020-10-14 03:29:17,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:29:17,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823398847] [2020-10-14 03:29:17,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:29:17,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:17,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:18,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:18,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:20,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:20,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-14 03:29:20,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:29:20,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2157 [2020-10-14 03:29:20,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:20,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:20,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:20,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 289 [2020-10-14 03:29:20,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 03:29:20,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:20,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:29:20,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:20,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:20,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:20,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:29:20,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:20,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:29:20,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:20,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:20,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:29:20,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:20,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:29:20,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:20,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:29:20,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:20,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:20,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:20,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 03:29:20,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:20,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 03:29:20,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:20,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:20,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:29:20,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:20,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:29:20,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:20,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-14 03:29:20,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:20,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:20,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:20,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-14 03:29:20,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:20,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 03:29:20,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:20,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:20,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:29:20,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:20,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 03:29:20,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:20,561 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-14 03:29:20,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823398847] [2020-10-14 03:29:20,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:29:20,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:29:20,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971100050] [2020-10-14 03:29:20,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:29:20,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:29:20,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:29:20,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:29:20,563 INFO L87 Difference]: Start difference. First operand 24480 states and 28044 transitions. Second operand 5 states. [2020-10-14 03:29:31,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:29:31,100 INFO L93 Difference]: Finished difference Result 58875 states and 68240 transitions. [2020-10-14 03:29:31,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:29:31,102 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 298 [2020-10-14 03:29:31,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:29:31,242 INFO L225 Difference]: With dead ends: 58875 [2020-10-14 03:29:31,242 INFO L226 Difference]: Without dead ends: 34401 [2020-10-14 03:29:31,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 03:29:31,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34401 states. [2020-10-14 03:29:31,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34401 to 31603. [2020-10-14 03:29:31,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31603 states. [2020-10-14 03:29:31,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31603 states to 31603 states and 36528 transitions. [2020-10-14 03:29:31,947 INFO L78 Accepts]: Start accepts. Automaton has 31603 states and 36528 transitions. Word has length 298 [2020-10-14 03:29:31,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:29:31,948 INFO L479 AbstractCegarLoop]: Abstraction has 31603 states and 36528 transitions. [2020-10-14 03:29:31,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:29:31,949 INFO L276 IsEmpty]: Start isEmpty. Operand 31603 states and 36528 transitions. [2020-10-14 03:29:31,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-14 03:29:31,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:29:31,967 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:29:31,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 03:29:31,967 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:29:31,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:29:31,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1321913428, now seen corresponding path program 1 times [2020-10-14 03:29:31,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:29:31,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414386560] [2020-10-14 03:29:31,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:29:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:32,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:32,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:32,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:36,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:36,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 346 [2020-10-14 03:29:36,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:29:36,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4972 [2020-10-14 03:29:36,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:36,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:36,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:36,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 03:29:36,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 03:29:36,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:37,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:29:37,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:37,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:37,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:37,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:29:37,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:37,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:29:37,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:37,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:37,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:29:37,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:37,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:29:37,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:37,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:29:37,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:37,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:37,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:37,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 03:29:37,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:37,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-14 03:29:37,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:37,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:37,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:29:37,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:37,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 03:29:37,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:37,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 03:29:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:37,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:37,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:37,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 03:29:37,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:37,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-14 03:29:37,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:37,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:37,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:37,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:29:37,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 03:29:37,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:37,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-14 03:29:37,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:37,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:37,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:37,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 03:29:37,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:37,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 03:29:37,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:37,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:37,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:29:37,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-14 03:29:37,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:29:37,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:29:37,952 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 123 proven. 79 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-14 03:29:37,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414386560] [2020-10-14 03:29:37,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:29:37,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:29:37,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896125760] [2020-10-14 03:29:37,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:29:37,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:29:37,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:29:37,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:29:37,956 INFO L87 Difference]: Start difference. First operand 31603 states and 36528 transitions. Second operand 7 states. [2020-10-14 03:29:51,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:29:51,922 INFO L93 Difference]: Finished difference Result 58446 states and 69895 transitions. [2020-10-14 03:29:51,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:29:51,925 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 332 [2020-10-14 03:29:51,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:29:52,069 INFO L225 Difference]: With dead ends: 58446 [2020-10-14 03:29:52,069 INFO L226 Difference]: Without dead ends: 34526 [2020-10-14 03:29:52,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 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 03:29:52,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34526 states. [2020-10-14 03:29:52,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34526 to 31934. [2020-10-14 03:29:52,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31934 states. [2020-10-14 03:29:52,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31934 states to 31934 states and 36959 transitions. [2020-10-14 03:29:52,907 INFO L78 Accepts]: Start accepts. Automaton has 31934 states and 36959 transitions. Word has length 332 [2020-10-14 03:29:52,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:29:52,908 INFO L479 AbstractCegarLoop]: Abstraction has 31934 states and 36959 transitions. [2020-10-14 03:29:52,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:29:52,908 INFO L276 IsEmpty]: Start isEmpty. Operand 31934 states and 36959 transitions. [2020-10-14 03:29:52,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-10-14 03:29:52,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:29:52,924 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:29:52,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 03:29:52,925 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:29:52,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:29:52,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1868331691, now seen corresponding path program 1 times [2020-10-14 03:29:52,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:29:52,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [499709172] [2020-10-14 03:29:52,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:29:52,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:53,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:53,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:53,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:55,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:55,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 355 [2020-10-14 03:29:55,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:29:55,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2737 [2020-10-14 03:29:55,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:55,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:55,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:29:55,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 334 [2020-10-14 03:29:55,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 03:29:55,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:55,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:29:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:55,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:55,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:55,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:29:55,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:55,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:29:55,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:55,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:55,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:29:55,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:55,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:29:55,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:55,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:29:55,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:55,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:55,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:55,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 03:29:55,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:55,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 03:29:55,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:55,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:55,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:29:55,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:55,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:29:55,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:55,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 03:29:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:29:55,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:29:56,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:29:56,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 03:29:56,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:29:56,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-14 03:29:56,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:29:56,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:29:56,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:29:56,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:29:56,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-14 03:29:56,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:29:56,259 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-14 03:29:56,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [499709172] [2020-10-14 03:29:56,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:29:56,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:29:56,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378328973] [2020-10-14 03:29:56,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:29:56,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:29:56,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:29:56,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:29:56,261 INFO L87 Difference]: Start difference. First operand 31934 states and 36959 transitions. Second operand 5 states. [2020-10-14 03:30:06,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:30:06,921 INFO L93 Difference]: Finished difference Result 76537 states and 89161 transitions. [2020-10-14 03:30:06,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:30:06,925 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 343 [2020-10-14 03:30:06,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:30:07,056 INFO L225 Difference]: With dead ends: 76537 [2020-10-14 03:30:07,056 INFO L226 Difference]: Without dead ends: 44918 [2020-10-14 03:30:07,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 03:30:07,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44918 states. [2020-10-14 03:30:07,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44918 to 35044. [2020-10-14 03:30:07,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35044 states. [2020-10-14 03:30:07,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35044 states to 35044 states and 41351 transitions. [2020-10-14 03:30:07,926 INFO L78 Accepts]: Start accepts. Automaton has 35044 states and 41351 transitions. Word has length 343 [2020-10-14 03:30:07,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:30:07,927 INFO L479 AbstractCegarLoop]: Abstraction has 35044 states and 41351 transitions. [2020-10-14 03:30:07,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:30:07,928 INFO L276 IsEmpty]: Start isEmpty. Operand 35044 states and 41351 transitions. [2020-10-14 03:30:07,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2020-10-14 03:30:07,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:30:07,955 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:30:07,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 03:30:07,955 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:30:07,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:30:07,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1427768658, now seen corresponding path program 1 times [2020-10-14 03:30:07,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:30:07,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071020192] [2020-10-14 03:30:07,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:30:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:08,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:08,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:09,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:09,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:10,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:11,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:13,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:13,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 391 [2020-10-14 03:30:13,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 03:30:13,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-14 03:30:13,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:13,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:13,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:30:13,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 269 [2020-10-14 03:30:13,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 03:30:13,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:30:13,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:30:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:13,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:13,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:13,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:30:13,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:13,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:30:13,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:13,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:13,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:30:13,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:13,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:30:13,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:13,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:30:13,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:13,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:13,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:13,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-14 03:30:13,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:13,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-14 03:30:13,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:13,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:13,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:30:13,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:30:13,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 254 [2020-10-14 03:30:13,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:30:13,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-10-14 03:30:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:30:13,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:30:13,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:30:13,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 03:30:13,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:30:13,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 03:30:13,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:30:13,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:30:13,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:30:13,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:30:13,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 03:30:13,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:30:13,997 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 122 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:30:13,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2071020192] [2020-10-14 03:30:13,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:30:13,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:30:13,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144641742] [2020-10-14 03:30:13,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:30:13,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:30:13,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:30:13,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:30:13,999 INFO L87 Difference]: Start difference. First operand 35044 states and 41351 transitions. Second operand 7 states.