/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_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:38:28,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:38:28,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:38:28,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:38:28,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:38:28,420 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:38:28,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:38:28,426 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:38:28,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:38:28,431 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:38:28,432 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:38:28,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:38:28,434 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:38:28,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:38:28,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:38:28,442 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:38:28,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:38:28,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:38:28,446 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:38:28,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:38:28,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:38:28,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:38:28,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:38:28,461 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:38:28,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:38:28,465 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:38:28,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:38:28,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:38:28,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:38:28,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:38:28,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:38:28,471 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:38:28,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:38:28,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:38:28,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:38:28,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:38:28,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:38:28,475 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:38:28,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:38:28,476 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:38:28,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:38:28,479 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 03:38:28,529 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:38:28,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:38:28,532 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:38:28,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:38:28,533 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:38:28,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:38:28,534 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:38:28,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:38:28,534 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:38:28,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:38:28,535 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:38:28,536 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:38:28,536 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:38:28,537 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:38:28,537 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:38:28,537 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:38:28,537 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:38:28,537 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:38:28,538 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:38:28,538 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:38:28,538 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:38:28,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:38:28,539 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:38:28,539 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:38:28,539 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:38:28,539 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:38:28,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:38:28,540 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:38:28,540 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:38:28,540 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 03:38:28,893 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:38:28,907 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:38:28,911 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:38:28,913 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:38:28,913 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:38:28,914 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label57.c [2020-10-14 03:38:28,986 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f3b42f4b/520481c5723b4d6c9992b2060ecabf60/FLAG2f5c58dba [2020-10-14 03:38:29,689 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:38:29,690 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label57.c [2020-10-14 03:38:29,722 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f3b42f4b/520481c5723b4d6c9992b2060ecabf60/FLAG2f5c58dba [2020-10-14 03:38:29,888 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f3b42f4b/520481c5723b4d6c9992b2060ecabf60 [2020-10-14 03:38:29,898 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:38:29,900 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:38:29,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:38:29,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:38:29,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:38:29,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:38:29" (1/1) ... [2020-10-14 03:38:29,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53d96e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:29, skipping insertion in model container [2020-10-14 03:38:29,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:38:29" (1/1) ... [2020-10-14 03:38:29,918 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:38:30,007 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:38:30,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:38:31,002 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:38:31,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:38:31,376 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:38:31,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:31 WrapperNode [2020-10-14 03:38:31,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:38:31,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:38:31,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:38:31,379 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:38:31,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:31" (1/1) ... [2020-10-14 03:38:31,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:31" (1/1) ... [2020-10-14 03:38:31,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:31" (1/1) ... [2020-10-14 03:38:31,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:31" (1/1) ... [2020-10-14 03:38:31,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:31" (1/1) ... [2020-10-14 03:38:31,557 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:31" (1/1) ... [2020-10-14 03:38:31,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:31" (1/1) ... [2020-10-14 03:38:31,613 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:38:31,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:38:31,614 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:38:31,614 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:38:31,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:31" (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 03:38:31,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:38:31,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:38:31,687 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:38:31,687 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:38:31,687 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:38:31,687 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:38:31,688 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:38:31,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:38:31,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:38:31,689 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:38:31,690 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:38:31,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:38:31,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:38:37,668 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:38:37,668 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:38:37,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:38:37 BoogieIcfgContainer [2020-10-14 03:38:37,690 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:38:37,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:38:37,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:38:37,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:38:37,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:38:29" (1/3) ... [2020-10-14 03:38:37,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28beea75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:38:37, skipping insertion in model container [2020-10-14 03:38:37,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:31" (2/3) ... [2020-10-14 03:38:37,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28beea75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:38:37, skipping insertion in model container [2020-10-14 03:38:37,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:38:37" (3/3) ... [2020-10-14 03:38:37,702 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label57.c [2020-10-14 03:38:37,714 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:38:37,729 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:38:37,748 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:38:37,788 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:38:37,789 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:38:37,789 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:38:37,789 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:38:37,789 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:38:37,789 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:38:37,789 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:38:37,790 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:38:37,834 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 03:38:37,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 03:38:37,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:38:37,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:38:37,847 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:38:37,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:38:37,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1681958245, now seen corresponding path program 1 times [2020-10-14 03:38:37,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:38:37,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897853389] [2020-10-14 03:38:37,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:38:38,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:38,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:38,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:38,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 03:38:38,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:38,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-10-14 03:38:38,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:38,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:38,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:38:38,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:38:38,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 03:38:38,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-14 03:38:38,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:38:38,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:38,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:38,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:38,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:38:38,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:38,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 03:38:38,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:38,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:38,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:38:38,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:38,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:38:38,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:38:38,768 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 03:38:38,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897853389] [2020-10-14 03:38:38,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:38:38,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:38:38,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441453134] [2020-10-14 03:38:38,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:38:38,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:38:38,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:38:38,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:38:38,801 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 03:38:45,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:38:45,042 INFO L93 Difference]: Finished difference Result 1224 states and 2200 transitions. [2020-10-14 03:38:45,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:38:45,044 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-14 03:38:45,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:38:45,069 INFO L225 Difference]: With dead ends: 1224 [2020-10-14 03:38:45,069 INFO L226 Difference]: Without dead ends: 708 [2020-10-14 03:38:45,087 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 03:38:45,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-10-14 03:38:45,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 694. [2020-10-14 03:38:45,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2020-10-14 03:38:45,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1080 transitions. [2020-10-14 03:38:45,192 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1080 transitions. Word has length 47 [2020-10-14 03:38:45,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:38:45,193 INFO L479 AbstractCegarLoop]: Abstraction has 694 states and 1080 transitions. [2020-10-14 03:38:45,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:38:45,194 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1080 transitions. [2020-10-14 03:38:45,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-14 03:38:45,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:38:45,200 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:38:45,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:38:45,201 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:38:45,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:38:45,201 INFO L82 PathProgramCache]: Analyzing trace with hash -828514075, now seen corresponding path program 1 times [2020-10-14 03:38:45,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:38:45,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95145816] [2020-10-14 03:38:45,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:38:45,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:45,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:45,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:45,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:46,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:47,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:47,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 03:38:47,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:38:47,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1905 [2020-10-14 03:38:47,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:47,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:47,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:38:47,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 03:38:47,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 03:38:47,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:38:47,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:38:47,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:47,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:47,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:47,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:38:47,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:47,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:38:47,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:47,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:47,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:38:47,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:47,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:38:47,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:38:47,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:38:47,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:47,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:47,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:47,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 03:38:47,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:47,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 03:38:47,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:47,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:47,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:38:47,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:47,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 03:38:47,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:38:47,435 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:38:47,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95145816] [2020-10-14 03:38:47,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:38:47,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:38:47,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523519740] [2020-10-14 03:38:47,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:38:47,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:38:47,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:38:47,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:38:47,440 INFO L87 Difference]: Start difference. First operand 694 states and 1080 transitions. Second operand 5 states. [2020-10-14 03:38:55,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:38:55,809 INFO L93 Difference]: Finished difference Result 1695 states and 2713 transitions. [2020-10-14 03:38:55,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:38:55,810 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-14 03:38:55,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:38:55,817 INFO L225 Difference]: With dead ends: 1695 [2020-10-14 03:38:55,818 INFO L226 Difference]: Without dead ends: 1007 [2020-10-14 03:38:55,821 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 03:38:55,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2020-10-14 03:38:55,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 1005. [2020-10-14 03:38:55,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1005 states. [2020-10-14 03:38:55,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1362 transitions. [2020-10-14 03:38:55,870 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1362 transitions. Word has length 117 [2020-10-14 03:38:55,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:38:55,871 INFO L479 AbstractCegarLoop]: Abstraction has 1005 states and 1362 transitions. [2020-10-14 03:38:55,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:38:55,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1362 transitions. [2020-10-14 03:38:55,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-14 03:38:55,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:38:55,876 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:38:55,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:38:55,876 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:38:55,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:38:55,877 INFO L82 PathProgramCache]: Analyzing trace with hash 730384645, now seen corresponding path program 1 times [2020-10-14 03:38:55,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:38:55,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859645857] [2020-10-14 03:38:55,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:38:55,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:55,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:56,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:56,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:56,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 03:38:56,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:38:56,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 983 [2020-10-14 03:38:56,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:56,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:56,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:38:56,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 03:38:56,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 03:38:56,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:38:57,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:38:57,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:57,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:57,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:57,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:38:57,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:57,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:38:57,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:57,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:57,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:38:57,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:57,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:38:57,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:38:57,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:38:57,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:57,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:57,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:57,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 03:38:57,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:57,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 03:38:57,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:57,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:57,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:38:57,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:57,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 03:38:57,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:38:57,245 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:38:57,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859645857] [2020-10-14 03:38:57,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:38:57,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:38:57,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414230086] [2020-10-14 03:38:57,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:38:57,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:38:57,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:38:57,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:38:57,251 INFO L87 Difference]: Start difference. First operand 1005 states and 1362 transitions. Second operand 5 states. [2020-10-14 03:39:06,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:39:06,526 INFO L93 Difference]: Finished difference Result 2329 states and 3322 transitions. [2020-10-14 03:39:06,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:39:06,533 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-10-14 03:39:06,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:39:06,547 INFO L225 Difference]: With dead ends: 2329 [2020-10-14 03:39:06,547 INFO L226 Difference]: Without dead ends: 1639 [2020-10-14 03:39:06,550 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 03:39:06,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2020-10-14 03:39:06,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1639. [2020-10-14 03:39:06,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1639 states. [2020-10-14 03:39:06,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 2086 transitions. [2020-10-14 03:39:06,597 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 2086 transitions. Word has length 130 [2020-10-14 03:39:06,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:39:06,598 INFO L479 AbstractCegarLoop]: Abstraction has 1639 states and 2086 transitions. [2020-10-14 03:39:06,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:39:06,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 2086 transitions. [2020-10-14 03:39:06,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-14 03:39:06,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:39:06,603 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:39:06,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:39:06,604 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:39:06,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:39:06,604 INFO L82 PathProgramCache]: Analyzing trace with hash 987837868, now seen corresponding path program 1 times [2020-10-14 03:39:06,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:39:06,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159226671] [2020-10-14 03:39:06,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:39:06,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:06,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:06,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:07,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:08,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:08,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:08,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 03:39:08,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:39:08,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1556 [2020-10-14 03:39:08,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:08,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:08,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:08,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 03:39:08,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 03:39:08,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:08,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:39:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:08,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:08,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:08,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:39:08,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:08,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:39:08,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:08,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:08,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:39:08,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:08,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:39:08,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:08,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:39:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:08,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:08,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:08,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 03:39:08,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:08,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 03:39:08,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:08,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:08,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:39:08,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:08,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 03:39:08,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:08,495 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:39:08,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159226671] [2020-10-14 03:39:08,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:39:08,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:39:08,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637048404] [2020-10-14 03:39:08,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:39:08,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:39:08,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:39:08,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:39:08,501 INFO L87 Difference]: Start difference. First operand 1639 states and 2086 transitions. Second operand 5 states. [2020-10-14 03:39:17,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:39:17,359 INFO L93 Difference]: Finished difference Result 3589 states and 4761 transitions. [2020-10-14 03:39:17,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:39:17,362 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-10-14 03:39:17,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:39:17,374 INFO L225 Difference]: With dead ends: 3589 [2020-10-14 03:39:17,374 INFO L226 Difference]: Without dead ends: 2265 [2020-10-14 03:39:17,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:39:17,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2265 states. [2020-10-14 03:39:17,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2265 to 1631. [2020-10-14 03:39:17,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1631 states. [2020-10-14 03:39:17,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2072 transitions. [2020-10-14 03:39:17,436 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2072 transitions. Word has length 133 [2020-10-14 03:39:17,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:39:17,437 INFO L479 AbstractCegarLoop]: Abstraction has 1631 states and 2072 transitions. [2020-10-14 03:39:17,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:39:17,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2072 transitions. [2020-10-14 03:39:17,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-14 03:39:17,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:39:17,441 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:39:17,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:39:17,442 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:39:17,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:39:17,443 INFO L82 PathProgramCache]: Analyzing trace with hash 305833672, now seen corresponding path program 1 times [2020-10-14 03:39:17,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:39:17,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660023800] [2020-10-14 03:39:17,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:39:17,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:17,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:17,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:18,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:18,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-14 03:39:18,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:39:18,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1308 [2020-10-14 03:39:18,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:18,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:18,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:18,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 03:39:18,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 03:39:18,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:18,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:39:18,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:18,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:18,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:18,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:39:18,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:18,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:39:18,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:18,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:18,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:39:18,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:18,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:39:18,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:18,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:39:18,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:18,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:19,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:19,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 03:39:19,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:19,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-14 03:39:19,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:19,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:19,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:39:19,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:19,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 03:39:19,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 03:39:19,179 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:39:19,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660023800] [2020-10-14 03:39:19,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:39:19,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:39:19,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307516706] [2020-10-14 03:39:19,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:39:19,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:39:19,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:39:19,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:39:19,186 INFO L87 Difference]: Start difference. First operand 1631 states and 2072 transitions. Second operand 5 states. [2020-10-14 03:39:26,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:39:26,078 INFO L93 Difference]: Finished difference Result 3569 states and 4727 transitions. [2020-10-14 03:39:26,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:39:26,080 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-14 03:39:26,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:39:26,090 INFO L225 Difference]: With dead ends: 3569 [2020-10-14 03:39:26,090 INFO L226 Difference]: Without dead ends: 2253 [2020-10-14 03:39:26,095 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 03:39:26,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2253 states. [2020-10-14 03:39:26,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2253 to 2251. [2020-10-14 03:39:26,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2251 states. [2020-10-14 03:39:26,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 2770 transitions. [2020-10-14 03:39:26,147 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 2770 transitions. Word has length 163 [2020-10-14 03:39:26,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:39:26,147 INFO L479 AbstractCegarLoop]: Abstraction has 2251 states and 2770 transitions. [2020-10-14 03:39:26,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:39:26,148 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 2770 transitions. [2020-10-14 03:39:26,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-14 03:39:26,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:39:26,151 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:39:26,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:39:26,151 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:39:26,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:39:26,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1562259491, now seen corresponding path program 1 times [2020-10-14 03:39:26,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:39:26,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1315888533] [2020-10-14 03:39:26,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:39:26,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:26,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:26,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:27,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:27,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-14 03:39:27,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:39:27,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 909 [2020-10-14 03:39:27,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:27,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:27,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:27,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-14 03:39:27,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 03:39:27,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:27,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:39:27,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:27,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:27,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:27,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:39:27,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:27,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:39:27,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:27,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:27,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:39:27,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:27,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:39:27,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:27,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:39:27,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:27,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:27,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:27,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 03:39:27,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:27,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-14 03:39:27,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:27,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:27,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:39:27,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:27,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 03:39:27,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:27,455 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:39:27,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1315888533] [2020-10-14 03:39:27,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:39:27,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:39:27,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427992423] [2020-10-14 03:39:27,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:39:27,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:39:27,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:39:27,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:39:27,458 INFO L87 Difference]: Start difference. First operand 2251 states and 2770 transitions. Second operand 5 states. [2020-10-14 03:39:33,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:39:33,820 INFO L93 Difference]: Finished difference Result 5125 states and 6528 transitions. [2020-10-14 03:39:33,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:39:33,821 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2020-10-14 03:39:33,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:39:33,834 INFO L225 Difference]: With dead ends: 5125 [2020-10-14 03:39:33,834 INFO L226 Difference]: Without dead ends: 3189 [2020-10-14 03:39:33,840 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 03:39:33,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3189 states. [2020-10-14 03:39:33,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3189 to 3186. [2020-10-14 03:39:33,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3186 states. [2020-10-14 03:39:33,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 3883 transitions. [2020-10-14 03:39:33,911 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 3883 transitions. Word has length 176 [2020-10-14 03:39:33,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:39:33,911 INFO L479 AbstractCegarLoop]: Abstraction has 3186 states and 3883 transitions. [2020-10-14 03:39:33,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:39:33,912 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 3883 transitions. [2020-10-14 03:39:33,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-14 03:39:33,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:39:33,915 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:39:33,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:39:33,916 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:39:33,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:39:33,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1578049433, now seen corresponding path program 1 times [2020-10-14 03:39:33,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:39:33,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705887658] [2020-10-14 03:39:33,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:39:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:33,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:34,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:34,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:36,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:36,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 03:39:36,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:39:36,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2098 [2020-10-14 03:39:36,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:36,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:36,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:36,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-14 03:39:36,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 03:39:36,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:36,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:39:36,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:36,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:36,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:36,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:39:36,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:36,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:39:36,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:36,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:36,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:39:36,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:36,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:39:36,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:36,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:39:36,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:36,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:36,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:36,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 03:39:36,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:36,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-14 03:39:36,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:36,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:36,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:39:36,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:36,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 03:39:36,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:36,538 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:39:36,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705887658] [2020-10-14 03:39:36,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:39:36,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:39:36,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105937114] [2020-10-14 03:39:36,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:39:36,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:39:36,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:39:36,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:39:36,542 INFO L87 Difference]: Start difference. First operand 3186 states and 3883 transitions. Second operand 5 states. [2020-10-14 03:39:43,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:39:43,158 INFO L93 Difference]: Finished difference Result 6989 states and 8764 transitions. [2020-10-14 03:39:43,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:39:43,161 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 190 [2020-10-14 03:39:43,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:39:43,181 INFO L225 Difference]: With dead ends: 6989 [2020-10-14 03:39:43,181 INFO L226 Difference]: Without dead ends: 4118 [2020-10-14 03:39:43,192 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 03:39:43,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4118 states. [2020-10-14 03:39:43,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4118 to 4118. [2020-10-14 03:39:43,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4118 states. [2020-10-14 03:39:43,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4118 states to 4118 states and 5075 transitions. [2020-10-14 03:39:43,340 INFO L78 Accepts]: Start accepts. Automaton has 4118 states and 5075 transitions. Word has length 190 [2020-10-14 03:39:43,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:39:43,340 INFO L479 AbstractCegarLoop]: Abstraction has 4118 states and 5075 transitions. [2020-10-14 03:39:43,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:39:43,341 INFO L276 IsEmpty]: Start isEmpty. Operand 4118 states and 5075 transitions. [2020-10-14 03:39:43,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-14 03:39:43,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:39:43,346 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:39:43,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:39:43,347 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:39:43,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:39:43,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1680582393, now seen corresponding path program 1 times [2020-10-14 03:39:43,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:39:43,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802167981] [2020-10-14 03:39:43,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:39:43,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:43,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:43,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:43,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:45,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:45,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:48,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:48,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-14 03:39:48,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:39:48,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-14 03:39:48,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:48,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:48,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:48,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 03:39:48,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 03:39:48,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:48,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:39:48,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:48,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:48,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:48,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:39:48,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:48,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:39:48,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:48,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:48,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:39:48,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:48,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:39:48,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:48,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:39:48,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:48,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:48,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:48,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 03:39:48,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:48,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 03:39:48,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:48,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:48,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:39:48,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:48,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 03:39:48,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:39:48,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 03:39:48,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:48,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:48,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:48,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 03:39:48,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:48,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-14 03:39:48,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:48,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:48,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:48,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:39:48,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 03:39:48,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:48,969 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:39:48,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802167981] [2020-10-14 03:39:48,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:39:48,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:39:48,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015665125] [2020-10-14 03:39:48,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:39:48,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:39:48,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:39:48,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:39:48,972 INFO L87 Difference]: Start difference. First operand 4118 states and 5075 transitions. Second operand 7 states. [2020-10-14 03:40:06,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:40:06,097 INFO L93 Difference]: Finished difference Result 13971 states and 18283 transitions. [2020-10-14 03:40:06,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:40:06,098 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 198 [2020-10-14 03:40:06,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:40:06,145 INFO L225 Difference]: With dead ends: 13971 [2020-10-14 03:40:06,145 INFO L226 Difference]: Without dead ends: 8902 [2020-10-14 03:40:06,161 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 03:40:06,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8902 states. [2020-10-14 03:40:06,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8902 to 8822. [2020-10-14 03:40:06,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8822 states. [2020-10-14 03:40:06,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8822 states to 8822 states and 10582 transitions. [2020-10-14 03:40:06,412 INFO L78 Accepts]: Start accepts. Automaton has 8822 states and 10582 transitions. Word has length 198 [2020-10-14 03:40:06,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:40:06,413 INFO L479 AbstractCegarLoop]: Abstraction has 8822 states and 10582 transitions. [2020-10-14 03:40:06,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:40:06,413 INFO L276 IsEmpty]: Start isEmpty. Operand 8822 states and 10582 transitions. [2020-10-14 03:40:06,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-14 03:40:06,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:40:06,424 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 03:40:06,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 03:40:06,425 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:40:06,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:40:06,425 INFO L82 PathProgramCache]: Analyzing trace with hash -21562039, now seen corresponding path program 1 times [2020-10-14 03:40:06,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:40:06,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693425709] [2020-10-14 03:40:06,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:40:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:06,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:06,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:06,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:08,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:10,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:11,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:11,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-14 03:40:11,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:40:11,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 03:40:11,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:11,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:11,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:40:11,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-14 03:40:11,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 03:40:11,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:40:11,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:40:11,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:11,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:11,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:11,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:40:11,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:11,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:40:11,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:11,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:11,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:40:11,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:11,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:40:11,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:40:11,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:40:11,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:11,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:11,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:11,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 03:40:11,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:11,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-14 03:40:11,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:11,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:11,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:40:11,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:11,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 03:40:11,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:40:11,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-14 03:40:11,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:11,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:12,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:12,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 03:40:12,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:12,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 03:40:12,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:12,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:12,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:40:12,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:40:12,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 03:40:12,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:12,142 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 156 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:40:12,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693425709] [2020-10-14 03:40:12,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:40:12,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:40:12,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660883812] [2020-10-14 03:40:12,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:40:12,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:40:12,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:40:12,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:40:12,153 INFO L87 Difference]: Start difference. First operand 8822 states and 10582 transitions. Second operand 7 states. [2020-10-14 03:40:22,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:40:22,169 INFO L93 Difference]: Finished difference Result 18785 states and 23532 transitions. [2020-10-14 03:40:22,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:40:22,171 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 269 [2020-10-14 03:40:22,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:40:22,229 INFO L225 Difference]: With dead ends: 18785 [2020-10-14 03:40:22,230 INFO L226 Difference]: Without dead ends: 10278 [2020-10-14 03:40:22,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:40:22,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10278 states. [2020-10-14 03:40:22,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10278 to 10271. [2020-10-14 03:40:22,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10271 states. [2020-10-14 03:40:22,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10271 states to 10271 states and 12424 transitions. [2020-10-14 03:40:22,518 INFO L78 Accepts]: Start accepts. Automaton has 10271 states and 12424 transitions. Word has length 269 [2020-10-14 03:40:22,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:40:22,519 INFO L479 AbstractCegarLoop]: Abstraction has 10271 states and 12424 transitions. [2020-10-14 03:40:22,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:40:22,519 INFO L276 IsEmpty]: Start isEmpty. Operand 10271 states and 12424 transitions. [2020-10-14 03:40:22,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-14 03:40:22,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:40:22,535 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:40:22,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 03:40:22,536 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:40:22,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:40:22,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1022727106, now seen corresponding path program 1 times [2020-10-14 03:40:22,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:40:22,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430904152] [2020-10-14 03:40:22,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:40:22,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:22,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:22,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:22,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:22,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:23,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:24,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:25,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:25,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:27,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:27,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-14 03:40:27,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 03:40:27,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-14 03:40:27,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:27,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:27,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:40:27,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-14 03:40:27,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:40:27,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:27,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:40:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:27,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:27,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:27,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:40:27,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:27,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:40:27,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:27,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:27,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:40:27,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:27,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:40:27,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:27,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:40:27,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:27,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:27,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:27,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 03:40:27,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:27,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 03:40:27,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:27,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:27,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:40:27,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:27,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:40:27,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:40:27,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 03:40:27,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:27,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:27,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:27,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 03:40:27,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:27,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 03:40:27,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:27,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:27,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:40:27,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 03:40:27,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:40:27,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:28,079 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-14 03:40:28,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430904152] [2020-10-14 03:40:28,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:40:28,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 03:40:28,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275234915] [2020-10-14 03:40:28,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:40:28,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:40:28,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:40:28,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:40:28,081 INFO L87 Difference]: Start difference. First operand 10271 states and 12424 transitions. Second operand 5 states. [2020-10-14 03:40:38,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:40:38,692 INFO L93 Difference]: Finished difference Result 28060 states and 34554 transitions. [2020-10-14 03:40:38,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:40:38,694 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 284 [2020-10-14 03:40:38,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:40:38,790 INFO L225 Difference]: With dead ends: 28060 [2020-10-14 03:40:38,790 INFO L226 Difference]: Without dead ends: 18152 [2020-10-14 03:40:38,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:40:38,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18152 states. [2020-10-14 03:40:39,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18152 to 16584. [2020-10-14 03:40:39,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16584 states. [2020-10-14 03:40:39,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16584 states to 16584 states and 20537 transitions. [2020-10-14 03:40:39,231 INFO L78 Accepts]: Start accepts. Automaton has 16584 states and 20537 transitions. Word has length 284 [2020-10-14 03:40:39,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:40:39,231 INFO L479 AbstractCegarLoop]: Abstraction has 16584 states and 20537 transitions. [2020-10-14 03:40:39,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:40:39,232 INFO L276 IsEmpty]: Start isEmpty. Operand 16584 states and 20537 transitions. [2020-10-14 03:40:39,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-14 03:40:39,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:40:39,249 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:40:39,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 03:40:39,250 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:40:39,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:40:39,250 INFO L82 PathProgramCache]: Analyzing trace with hash 415813298, now seen corresponding path program 1 times [2020-10-14 03:40:39,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:40:39,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608816094] [2020-10-14 03:40:39,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:40:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:39,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:39,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:40,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:41,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:41,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:43,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:43,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-14 03:40:43,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:40:43,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3959 [2020-10-14 03:40:43,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:43,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:43,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:40:43,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 143 [2020-10-14 03:40:43,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-14 03:40:43,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:43,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:40:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:43,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:43,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:43,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:40:43,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:43,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:40:43,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:43,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:43,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:40:43,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:43,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:40:43,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:43,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:40:43,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:43,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:43,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:43,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 03:40:43,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:43,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 03:40:43,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:43,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:43,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:40:43,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:43,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 03:40:43,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:40:43,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-14 03:40:43,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:43,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:43,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:43,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 03:40:43,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:43,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-14 03:40:43,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:43,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:43,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:40:43,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:40:43,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 03:40:43,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:43,972 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:40:43,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608816094] [2020-10-14 03:40:43,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:40:43,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:40:43,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90808468] [2020-10-14 03:40:43,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:40:43,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:40:43,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:40:43,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:40:43,975 INFO L87 Difference]: Start difference. First operand 16584 states and 20537 transitions. Second operand 7 states. [2020-10-14 03:40:55,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:40:55,468 INFO L93 Difference]: Finished difference Result 36063 states and 45824 transitions. [2020-10-14 03:40:55,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:40:55,470 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 296 [2020-10-14 03:40:55,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:40:55,568 INFO L225 Difference]: With dead ends: 36063 [2020-10-14 03:40:55,569 INFO L226 Difference]: Without dead ends: 19793 [2020-10-14 03:40:55,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 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 03:40:55,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19793 states. [2020-10-14 03:40:56,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19793 to 19773. [2020-10-14 03:40:56,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19773 states. [2020-10-14 03:40:56,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19773 states to 19773 states and 24706 transitions. [2020-10-14 03:40:56,172 INFO L78 Accepts]: Start accepts. Automaton has 19773 states and 24706 transitions. Word has length 296 [2020-10-14 03:40:56,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:40:56,173 INFO L479 AbstractCegarLoop]: Abstraction has 19773 states and 24706 transitions. [2020-10-14 03:40:56,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:40:56,173 INFO L276 IsEmpty]: Start isEmpty. Operand 19773 states and 24706 transitions. [2020-10-14 03:40:56,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-14 03:40:56,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:40:56,189 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 03:40:56,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 03:40:56,189 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:40:56,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:40:56,190 INFO L82 PathProgramCache]: Analyzing trace with hash -905765793, now seen corresponding path program 1 times [2020-10-14 03:40:56,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:40:56,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558683956] [2020-10-14 03:40:56,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:40:56,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:56,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:56,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:57,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:58,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:59,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:01,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:01,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-14 03:41:01,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:41:01,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4867 [2020-10-14 03:41:01,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:01,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:01,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:41:01,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 03:41:01,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 03:41:01,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:41:01,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:41:01,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:01,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:01,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:01,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:41:01,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:01,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:41:01,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:01,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:01,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:01,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:01,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:01,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:41:01,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:41:01,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:01,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:01,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:01,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 03:41:01,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:01,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 03:41:01,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:01,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:01,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:41:01,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:01,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 03:41:01,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:01,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-14 03:41:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:01,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:01,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:01,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 03:41:01,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:01,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-14 03:41:01,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:01,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:01,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:41:01,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:41:01,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 03:41:01,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:41:01,815 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 198 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:41:01,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558683956] [2020-10-14 03:41:01,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:41:01,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:41:01,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236319194] [2020-10-14 03:41:01,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:41:01,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:41:01,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:41:01,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:41:01,818 INFO L87 Difference]: Start difference. First operand 19773 states and 24706 transitions. Second operand 7 states. [2020-10-14 03:41:10,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:41:10,766 INFO L93 Difference]: Finished difference Result 40772 states and 52228 transitions. [2020-10-14 03:41:10,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:41:10,768 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 298 [2020-10-14 03:41:10,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:41:10,869 INFO L225 Difference]: With dead ends: 40772 [2020-10-14 03:41:10,870 INFO L226 Difference]: Without dead ends: 21393 [2020-10-14 03:41:10,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:41:10,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21393 states. [2020-10-14 03:41:11,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21393 to 21100. [2020-10-14 03:41:11,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21100 states. [2020-10-14 03:41:11,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21100 states to 21100 states and 26488 transitions. [2020-10-14 03:41:11,412 INFO L78 Accepts]: Start accepts. Automaton has 21100 states and 26488 transitions. Word has length 298 [2020-10-14 03:41:11,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:41:11,413 INFO L479 AbstractCegarLoop]: Abstraction has 21100 states and 26488 transitions. [2020-10-14 03:41:11,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:41:11,413 INFO L276 IsEmpty]: Start isEmpty. Operand 21100 states and 26488 transitions. [2020-10-14 03:41:11,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-14 03:41:11,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:41:11,431 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:41:11,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 03:41:11,431 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:41:11,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:41:11,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1747537735, now seen corresponding path program 1 times [2020-10-14 03:41:11,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:41:11,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [687488268] [2020-10-14 03:41:11,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:41:11,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:11,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:11,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:12,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:12,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:12,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-14 03:41:12,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:41:12,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1471 [2020-10-14 03:41:12,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:12,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:12,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:41:12,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 269 [2020-10-14 03:41:12,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 03:41:12,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:13,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:41:13,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:13,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:13,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:13,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:41:13,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:13,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:41:13,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:13,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:13,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:13,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:13,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:13,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:13,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:41:13,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:13,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:13,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:13,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-14 03:41:13,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:13,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-14 03:41:13,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:13,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:13,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:41:13,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:13,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 254 [2020-10-14 03:41:13,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:13,430 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:41:13,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [687488268] [2020-10-14 03:41:13,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:41:13,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:41:13,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855508965] [2020-10-14 03:41:13,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:41:13,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:41:13,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:41:13,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:41:13,432 INFO L87 Difference]: Start difference. First operand 21100 states and 26488 transitions. Second operand 5 states. [2020-10-14 03:41:23,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:41:23,019 INFO L93 Difference]: Finished difference Result 50228 states and 63198 transitions. [2020-10-14 03:41:23,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:41:23,021 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 306 [2020-10-14 03:41:23,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:41:23,154 INFO L225 Difference]: With dead ends: 50228 [2020-10-14 03:41:23,155 INFO L226 Difference]: Without dead ends: 27957 [2020-10-14 03:41:23,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:41:23,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27957 states. [2020-10-14 03:41:23,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27957 to 27335. [2020-10-14 03:41:23,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27335 states. [2020-10-14 03:41:23,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27335 states to 27335 states and 33850 transitions. [2020-10-14 03:41:23,847 INFO L78 Accepts]: Start accepts. Automaton has 27335 states and 33850 transitions. Word has length 306 [2020-10-14 03:41:23,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:41:23,848 INFO L479 AbstractCegarLoop]: Abstraction has 27335 states and 33850 transitions. [2020-10-14 03:41:23,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:41:23,848 INFO L276 IsEmpty]: Start isEmpty. Operand 27335 states and 33850 transitions. [2020-10-14 03:41:23,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-14 03:41:23,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:41:23,879 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:41:23,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 03:41:23,879 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:41:23,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:41:23,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1353506992, now seen corresponding path program 1 times [2020-10-14 03:41:23,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:41:23,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304038245] [2020-10-14 03:41:23,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:41:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:23,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:24,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:24,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:25,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:25,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:27,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:27,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-14 03:41:27,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:41:27,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3955 [2020-10-14 03:41:27,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:27,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:27,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:41:27,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-14 03:41:27,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-14 03:41:27,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:27,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:41:27,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:27,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:27,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:27,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:41:27,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:27,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:41:27,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:27,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:27,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:27,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:27,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:27,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:28,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:41:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:28,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:28,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:28,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 03:41:28,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:28,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 03:41:28,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:28,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:28,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:41:28,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:28,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 03:41:28,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:41:28,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-14 03:41:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:28,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:28,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:28,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 03:41:28,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:28,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-14 03:41:28,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:28,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:28,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:41:28,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:41:28,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 03:41:28,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:28,602 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:41:28,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304038245] [2020-10-14 03:41:28,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:41:28,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:41:28,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42106558] [2020-10-14 03:41:28,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:41:28,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:41:28,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:41:28,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:41:28,604 INFO L87 Difference]: Start difference. First operand 27335 states and 33850 transitions. Second operand 7 states. [2020-10-14 03:41:47,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:41:47,662 INFO L93 Difference]: Finished difference Result 55679 states and 71744 transitions. [2020-10-14 03:41:47,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:41:47,664 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 318 [2020-10-14 03:41:47,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:41:47,830 INFO L225 Difference]: With dead ends: 55679 [2020-10-14 03:41:47,830 INFO L226 Difference]: Without dead ends: 34842 [2020-10-14 03:41:47,905 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 03:41:47,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34842 states. [2020-10-14 03:41:48,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34842 to 33616. [2020-10-14 03:41:48,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33616 states. [2020-10-14 03:41:48,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33616 states to 33616 states and 40401 transitions. [2020-10-14 03:41:48,770 INFO L78 Accepts]: Start accepts. Automaton has 33616 states and 40401 transitions. Word has length 318 [2020-10-14 03:41:48,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:41:48,771 INFO L479 AbstractCegarLoop]: Abstraction has 33616 states and 40401 transitions. [2020-10-14 03:41:48,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:41:48,771 INFO L276 IsEmpty]: Start isEmpty. Operand 33616 states and 40401 transitions. [2020-10-14 03:41:48,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-14 03:41:48,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:41:48,785 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 03:41:48,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 03:41:48,786 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:41:48,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:41:48,786 INFO L82 PathProgramCache]: Analyzing trace with hash 565096897, now seen corresponding path program 1 times [2020-10-14 03:41:48,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:41:48,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273693446] [2020-10-14 03:41:48,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:41:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:48,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:49,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:49,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:51,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:51,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-14 03:41:51,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:41:51,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2770 [2020-10-14 03:41:51,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:51,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:51,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:41:51,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 289 [2020-10-14 03:41:51,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 03:41:51,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:51,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:41:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:51,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:51,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:51,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:41:51,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:51,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:41:51,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:51,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:51,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:51,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:51,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:51,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:51,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:41:51,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:51,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:51,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:51,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 03:41:51,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:51,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 03:41:51,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:51,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:51,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:51,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:51,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:51,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:51,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-14 03:41:51,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:51,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:51,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:51,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-14 03:41:51,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:51,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 03:41:51,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:51,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:51,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:41:51,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:51,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 03:41:51,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:51,931 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-14 03:41:51,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273693446] [2020-10-14 03:41:51,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:41:51,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:41:51,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863441537] [2020-10-14 03:41:51,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:41:51,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:41:51,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:41:51,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:41:51,933 INFO L87 Difference]: Start difference. First operand 33616 states and 40401 transitions. Second operand 5 states. [2020-10-14 03:41:59,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:41:59,932 INFO L93 Difference]: Finished difference Result 66918 states and 80504 transitions. [2020-10-14 03:41:59,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:41:59,934 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 324 [2020-10-14 03:41:59,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:42:00,053 INFO L225 Difference]: With dead ends: 66918 [2020-10-14 03:42:00,053 INFO L226 Difference]: Without dead ends: 33616 [2020-10-14 03:42:00,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 03:42:00,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33616 states. [2020-10-14 03:42:00,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33616 to 33604. [2020-10-14 03:42:00,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33604 states. [2020-10-14 03:42:00,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33604 states to 33604 states and 39590 transitions. [2020-10-14 03:42:00,814 INFO L78 Accepts]: Start accepts. Automaton has 33604 states and 39590 transitions. Word has length 324 [2020-10-14 03:42:00,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:42:00,814 INFO L479 AbstractCegarLoop]: Abstraction has 33604 states and 39590 transitions. [2020-10-14 03:42:00,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:42:00,815 INFO L276 IsEmpty]: Start isEmpty. Operand 33604 states and 39590 transitions. [2020-10-14 03:42:00,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-14 03:42:00,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:42:00,829 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 03:42:00,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 03:42:00,829 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:42:00,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:42:00,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1722999514, now seen corresponding path program 1 times [2020-10-14 03:42:00,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:42:00,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142998564] [2020-10-14 03:42:00,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:42:00,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:00,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:00,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:01,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:01,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:03,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:05,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:05,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:05,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 342 [2020-10-14 03:42:05,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 03:42:05,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-14 03:42:05,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:05,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:05,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:42:05,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-14 03:42:05,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:42:05,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:05,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:42:05,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:05,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:05,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:05,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:42:05,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:05,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:42:05,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:05,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:05,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:42:05,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:42:05,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:42:05,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:05,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:42:06,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:06,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:06,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:06,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 03:42:06,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:06,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 03:42:06,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:06,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:06,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:42:06,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:42:06,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:42:06,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:06,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 03:42:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:06,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:06,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:06,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 03:42:06,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:06,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 03:42:06,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:06,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:06,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:42:06,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 03:42:06,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:42:06,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:06,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-14 03:42:06,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:06,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:06,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:06,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 03:42:06,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:06,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 03:42:06,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:06,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:06,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:42:06,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-14 03:42:06,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:42:06,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:42:06,328 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2020-10-14 03:42:06,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142998564] [2020-10-14 03:42:06,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:42:06,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:42:06,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129812153] [2020-10-14 03:42:06,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:42:06,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:42:06,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:42:06,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:42:06,330 INFO L87 Difference]: Start difference. First operand 33604 states and 39590 transitions. Second operand 5 states.