/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=BIGGEST --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/Problem12_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 13:28:42,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 13:28:42,535 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 13:28:42,589 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 13:28:42,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 13:28:42,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 13:28:42,605 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 13:28:42,610 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 13:28:42,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 13:28:42,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 13:28:42,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 13:28:42,619 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 13:28:42,620 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 13:28:42,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 13:28:42,627 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 13:28:42,629 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 13:28:42,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 13:28:42,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 13:28:42,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 13:28:42,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 13:28:42,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 13:28:42,649 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 13:28:42,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 13:28:42,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 13:28:42,665 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 13:28:42,666 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 13:28:42,666 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 13:28:42,671 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 13:28:42,672 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 13:28:42,673 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 13:28:42,673 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 13:28:42,679 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 13:28:42,681 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 13:28:42,682 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 13:28:42,682 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 13:28:42,683 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 13:28:42,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 13:28:42,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 13:28:42,684 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 13:28:42,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 13:28:42,691 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 13:28:42,692 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 [2020-10-12 13:28:42,736 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 13:28:42,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 13:28:42,739 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 13:28:42,740 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 13:28:42,740 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 13:28:42,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 13:28:42,741 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 13:28:42,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 13:28:42,741 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 13:28:42,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 13:28:42,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 13:28:42,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 13:28:42,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 13:28:42,743 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 13:28:42,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 13:28:42,743 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 13:28:42,744 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 13:28:42,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 13:28:42,744 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 13:28:42,744 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 13:28:42,745 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 13:28:42,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:28:42,745 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 13:28:42,746 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 13:28:42,746 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 13:28:42,746 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 13:28:42,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 13:28:42,746 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 13:28:42,747 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 13:28:42,747 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 13:28:43,077 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 13:28:43,101 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 13:28:43,108 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 13:28:43,113 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 13:28:43,114 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 13:28:43,115 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label43.c [2020-10-12 13:28:43,212 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d39f3aa00/b5a29065b50c4f41bd90ccf52eeaaafc/FLAG9eb844bd5 [2020-10-12 13:28:44,105 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 13:28:44,106 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label43.c [2020-10-12 13:28:44,144 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d39f3aa00/b5a29065b50c4f41bd90ccf52eeaaafc/FLAG9eb844bd5 [2020-10-12 13:28:44,626 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d39f3aa00/b5a29065b50c4f41bd90ccf52eeaaafc [2020-10-12 13:28:44,637 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 13:28:44,640 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 13:28:44,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 13:28:44,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 13:28:44,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 13:28:44,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:28:44" (1/1) ... [2020-10-12 13:28:44,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e7cadc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:28:44, skipping insertion in model container [2020-10-12 13:28:44,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:28:44" (1/1) ... [2020-10-12 13:28:44,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 13:28:44,808 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 13:28:46,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:28:46,839 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 13:28:47,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:28:47,691 INFO L208 MainTranslator]: Completed translation [2020-10-12 13:28:47,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:28:47 WrapperNode [2020-10-12 13:28:47,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 13:28:47,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 13:28:47,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 13:28:47,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 13:28:47,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:28:47" (1/1) ... [2020-10-12 13:28:47,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:28:47" (1/1) ... [2020-10-12 13:28:47,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:28:47" (1/1) ... [2020-10-12 13:28:47,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:28:47" (1/1) ... [2020-10-12 13:28:47,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:28:47" (1/1) ... [2020-10-12 13:28:47,934 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:28:47" (1/1) ... [2020-10-12 13:28:47,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:28:47" (1/1) ... [2020-10-12 13:28:47,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 13:28:47,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 13:28:47,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 13:28:47,997 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 13:28:47,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:28:47" (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 [2020-10-12 13:28:48,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 13:28:48,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 13:28:48,079 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 13:28:48,079 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 13:28:48,079 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 13:28:48,079 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 13:28:48,080 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 13:28:48,081 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 13:28:48,081 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 13:28:48,081 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 13:28:48,081 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 13:28:48,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 13:28:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 13:28:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 13:28:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 13:28:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 13:28:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 13:28:53,308 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 13:28:53,308 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 13:28:53,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:28:53 BoogieIcfgContainer [2020-10-12 13:28:53,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 13:28:53,334 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 13:28:53,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 13:28:53,340 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 13:28:53,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 01:28:44" (1/3) ... [2020-10-12 13:28:53,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6399d398 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:28:53, skipping insertion in model container [2020-10-12 13:28:53,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:28:47" (2/3) ... [2020-10-12 13:28:53,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6399d398 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:28:53, skipping insertion in model container [2020-10-12 13:28:53,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:28:53" (3/3) ... [2020-10-12 13:28:53,349 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label43.c [2020-10-12 13:28:53,362 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 13:28:53,379 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 13:28:53,400 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 13:28:53,439 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 13:28:53,439 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 13:28:53,440 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 13:28:53,440 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 13:28:53,440 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 13:28:53,440 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 13:28:53,440 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 13:28:53,440 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 13:28:53,499 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-12 13:28:53,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-12 13:28:53,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:28:53,515 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] [2020-10-12 13:28:53,516 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:28:53,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:28:53,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1358413806, now seen corresponding path program 1 times [2020-10-12 13:28:53,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:28:53,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822267667] [2020-10-12 13:28:53,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:28:53,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:28:53,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:54,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:28:54,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-12 13:28:54,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:28:54,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 504 [2020-10-12 13:28:54,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:28:54,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:28:54,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:28:54,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 13:28:54,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 13:28:54,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:28:54,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:28:54,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:54,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:28:54,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:28:54,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:28:54,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 13:28:54,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:28:54,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:28:54,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:28:54,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:28:54,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 13:28:54,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:28:54,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822267667] [2020-10-12 13:28:54,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:28:54,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 13:28:54,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172998885] [2020-10-12 13:28:54,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 13:28:54,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:28:54,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 13:28:54,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 13:28:54,672 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-12 13:29:04,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:29:04,074 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-12 13:29:04,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:29:04,077 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-12 13:29:04,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:29:04,139 INFO L225 Difference]: With dead ends: 2471 [2020-10-12 13:29:04,139 INFO L226 Difference]: Without dead ends: 1568 [2020-10-12 13:29:04,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:29:04,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-12 13:29:04,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-12 13:29:04,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-12 13:29:04,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2725 transitions. [2020-10-12 13:29:04,358 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2725 transitions. Word has length 47 [2020-10-12 13:29:04,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:29:04,359 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2725 transitions. [2020-10-12 13:29:04,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 13:29:04,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2725 transitions. [2020-10-12 13:29:04,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 13:29:04,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:29:04,366 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] [2020-10-12 13:29:04,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 13:29:04,367 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:29:04,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:29:04,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1502234911, now seen corresponding path program 1 times [2020-10-12 13:29:04,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:29:04,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508992171] [2020-10-12 13:29:04,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:29:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:04,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:04,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:05,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:05,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:05,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 13:29:05,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:29:05,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1170 [2020-10-12 13:29:05,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:05,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:29:05,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:29:05,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-12 13:29:05,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:29:05,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:29:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:05,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:05,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:05,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:29:05,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:05,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 13:29:05,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:05,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:29:05,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:29:05,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:29:05,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:29:05,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:29:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:05,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:05,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:05,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:05,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 13:29:05,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:29:05,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-12 13:29:05,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:05,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:29:05,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:29:05,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 13:29:05,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:29:06,020 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 13:29:06,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508992171] [2020-10-12 13:29:06,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:29:06,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:29:06,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838940242] [2020-10-12 13:29:06,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:29:06,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:29:06,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:29:06,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:29:06,025 INFO L87 Difference]: Start difference. First operand 1553 states and 2725 transitions. Second operand 7 states. [2020-10-12 13:29:20,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:29:20,402 INFO L93 Difference]: Finished difference Result 6243 states and 11113 transitions. [2020-10-12 13:29:20,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 13:29:20,406 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2020-10-12 13:29:20,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:29:20,439 INFO L225 Difference]: With dead ends: 6243 [2020-10-12 13:29:20,439 INFO L226 Difference]: Without dead ends: 4696 [2020-10-12 13:29:20,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-10-12 13:29:20,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4696 states. [2020-10-12 13:29:20,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4696 to 4673. [2020-10-12 13:29:20,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4673 states. [2020-10-12 13:29:20,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4673 states to 4673 states and 7255 transitions. [2020-10-12 13:29:20,608 INFO L78 Accepts]: Start accepts. Automaton has 4673 states and 7255 transitions. Word has length 116 [2020-10-12 13:29:20,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:29:20,608 INFO L479 AbstractCegarLoop]: Abstraction has 4673 states and 7255 transitions. [2020-10-12 13:29:20,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:29:20,609 INFO L276 IsEmpty]: Start isEmpty. Operand 4673 states and 7255 transitions. [2020-10-12 13:29:20,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 13:29:20,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:29:20,612 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] [2020-10-12 13:29:20,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 13:29:20,613 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:29:20,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:29:20,613 INFO L82 PathProgramCache]: Analyzing trace with hash 155650379, now seen corresponding path program 1 times [2020-10-12 13:29:20,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:29:20,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640489270] [2020-10-12 13:29:20,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:29:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:20,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:20,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:21,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:21,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:21,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:29:21,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:29:21,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 691 [2020-10-12 13:29:21,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:21,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:29:21,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:29:21,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-12 13:29:21,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:29:21,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:29:21,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:21,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:21,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:21,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:29:21,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:21,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 13:29:21,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:21,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:29:21,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:29:21,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:29:21,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:29:21,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:29:21,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:21,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:21,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:21,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:29:21,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:21,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-12 13:29:21,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:21,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:29:21,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:29:21,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:29:21,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:29:21,967 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 13:29:21,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640489270] [2020-10-12 13:29:21,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:29:21,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:29:21,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129568421] [2020-10-12 13:29:21,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:29:21,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:29:21,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:29:21,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:29:21,970 INFO L87 Difference]: Start difference. First operand 4673 states and 7255 transitions. Second operand 6 states. [2020-10-12 13:29:34,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:29:34,589 INFO L93 Difference]: Finished difference Result 14095 states and 22247 transitions. [2020-10-12 13:29:34,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 13:29:34,590 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2020-10-12 13:29:34,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:29:34,650 INFO L225 Difference]: With dead ends: 14095 [2020-10-12 13:29:34,651 INFO L226 Difference]: Without dead ends: 9428 [2020-10-12 13:29:34,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:29:34,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9428 states. [2020-10-12 13:29:34,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9428 to 9405. [2020-10-12 13:29:34,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9405 states. [2020-10-12 13:29:35,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9405 states to 9405 states and 13128 transitions. [2020-10-12 13:29:35,043 INFO L78 Accepts]: Start accepts. Automaton has 9405 states and 13128 transitions. Word has length 122 [2020-10-12 13:29:35,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:29:35,046 INFO L479 AbstractCegarLoop]: Abstraction has 9405 states and 13128 transitions. [2020-10-12 13:29:35,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:29:35,047 INFO L276 IsEmpty]: Start isEmpty. Operand 9405 states and 13128 transitions. [2020-10-12 13:29:35,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-12 13:29:35,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:29:35,059 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] [2020-10-12 13:29:35,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 13:29:35,060 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:29:35,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:29:35,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1116982291, now seen corresponding path program 1 times [2020-10-12 13:29:35,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:29:35,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357770393] [2020-10-12 13:29:35,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:29:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:35,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:35,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:36,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:36,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-12 13:29:36,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:29:36,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1098 [2020-10-12 13:29:36,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:36,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:29:36,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:29:36,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-12 13:29:36,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:29:36,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:29:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:36,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:36,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:36,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:29:36,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:36,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 13:29:36,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:36,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:29:36,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:29:36,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:29:36,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:29:36,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:29:36,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:36,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:36,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:36,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 13:29:36,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:36,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-12 13:29:36,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:36,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:29:36,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:29:36,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 13:29:36,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 13:29:36,812 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:29:36,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357770393] [2020-10-12 13:29:36,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:29:36,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:29:36,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564300007] [2020-10-12 13:29:36,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:29:36,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:29:36,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:29:36,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:29:36,816 INFO L87 Difference]: Start difference. First operand 9405 states and 13128 transitions. Second operand 7 states. [2020-10-12 13:29:52,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:29:52,107 INFO L93 Difference]: Finished difference Result 27131 states and 39532 transitions. [2020-10-12 13:29:52,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:29:52,109 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 126 [2020-10-12 13:29:52,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:29:52,200 INFO L225 Difference]: With dead ends: 27131 [2020-10-12 13:29:52,200 INFO L226 Difference]: Without dead ends: 17732 [2020-10-12 13:29:52,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:29:52,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17732 states. [2020-10-12 13:29:52,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17732 to 17404. [2020-10-12 13:29:52,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17404 states. [2020-10-12 13:29:52,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17404 states to 17404 states and 23781 transitions. [2020-10-12 13:29:52,773 INFO L78 Accepts]: Start accepts. Automaton has 17404 states and 23781 transitions. Word has length 126 [2020-10-12 13:29:52,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:29:52,775 INFO L479 AbstractCegarLoop]: Abstraction has 17404 states and 23781 transitions. [2020-10-12 13:29:52,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:29:52,776 INFO L276 IsEmpty]: Start isEmpty. Operand 17404 states and 23781 transitions. [2020-10-12 13:29:52,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-12 13:29:52,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:29:52,782 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] [2020-10-12 13:29:52,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 13:29:52,783 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:29:52,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:29:52,784 INFO L82 PathProgramCache]: Analyzing trace with hash -604948593, now seen corresponding path program 1 times [2020-10-12 13:29:52,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:29:52,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626786064] [2020-10-12 13:29:52,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:29:52,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:52,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:53,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:53,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:53,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:54,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:54,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-12 13:29:54,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:29:54,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1625 [2020-10-12 13:29:54,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:54,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:29:54,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-12 13:29:54,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 13:29:54,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:29:54,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:29:54,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:54,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:54,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:54,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:29:54,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:54,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 13:29:54,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:54,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:29:54,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:29:54,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:29:54,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:29:54,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:29:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:54,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:54,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:54,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:29:54,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:54,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-12 13:29:54,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:54,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:29:54,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:29:54,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 13:29:54,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:29:54,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 13:29:54,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:54,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:54,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:55,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:55,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 13:29:55,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:29:55,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396 [2020-10-12 13:29:55,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:55,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:29:55,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:29:55,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 13:29:55,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:29:55,450 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 13:29:55,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626786064] [2020-10-12 13:29:55,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:29:55,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:29:55,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875876011] [2020-10-12 13:29:55,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:29:55,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:29:55,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:29:55,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:29:55,453 INFO L87 Difference]: Start difference. First operand 17404 states and 23781 transitions. Second operand 6 states. [2020-10-12 13:30:05,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:30:05,691 INFO L93 Difference]: Finished difference Result 32808 states and 45438 transitions. [2020-10-12 13:30:05,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:30:05,693 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 222 [2020-10-12 13:30:05,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:30:05,760 INFO L225 Difference]: With dead ends: 32808 [2020-10-12 13:30:05,761 INFO L226 Difference]: Without dead ends: 15134 [2020-10-12 13:30:05,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-12 13:30:05,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15134 states. [2020-10-12 13:30:06,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15134 to 15040. [2020-10-12 13:30:06,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15040 states. [2020-10-12 13:30:06,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15040 states to 15040 states and 20041 transitions. [2020-10-12 13:30:06,278 INFO L78 Accepts]: Start accepts. Automaton has 15040 states and 20041 transitions. Word has length 222 [2020-10-12 13:30:06,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:30:06,279 INFO L479 AbstractCegarLoop]: Abstraction has 15040 states and 20041 transitions. [2020-10-12 13:30:06,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:30:06,279 INFO L276 IsEmpty]: Start isEmpty. Operand 15040 states and 20041 transitions. [2020-10-12 13:30:06,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-12 13:30:06,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:30:06,286 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] [2020-10-12 13:30:06,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 13:30:06,286 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:30:06,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:30:06,287 INFO L82 PathProgramCache]: Analyzing trace with hash -821948230, now seen corresponding path program 1 times [2020-10-12 13:30:06,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:30:06,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948946490] [2020-10-12 13:30:06,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:30:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:06,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:06,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:07,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:07,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-12 13:30:07,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:30:07,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1429 [2020-10-12 13:30:07,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:07,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:30:07,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:30:07,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-12 13:30:07,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:30:07,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:30:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:07,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:07,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:07,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:30:07,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:30:07,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 13:30:07,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:07,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:30:07,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:30:07,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:30:07,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:30:07,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:30:08,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:08,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:08,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:08,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-12 13:30:08,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:30:08,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-12 13:30:08,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:08,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:30:08,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:30:08,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-12 13:30:08,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:30:08,748 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:30:08,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948946490] [2020-10-12 13:30:08,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:30:08,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:30:08,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87522554] [2020-10-12 13:30:08,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:30:08,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:30:08,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:30:08,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:30:08,752 INFO L87 Difference]: Start difference. First operand 15040 states and 20041 transitions. Second operand 7 states. [2020-10-12 13:30:22,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:30:22,182 INFO L93 Difference]: Finished difference Result 33974 states and 48482 transitions. [2020-10-12 13:30:22,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:30:22,184 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 245 [2020-10-12 13:30:22,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:30:22,254 INFO L225 Difference]: With dead ends: 33974 [2020-10-12 13:30:22,255 INFO L226 Difference]: Without dead ends: 18940 [2020-10-12 13:30:22,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:30:22,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18940 states. [2020-10-12 13:30:22,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18940 to 17744. [2020-10-12 13:30:22,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17744 states. [2020-10-12 13:30:22,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17744 states to 17744 states and 23219 transitions. [2020-10-12 13:30:22,691 INFO L78 Accepts]: Start accepts. Automaton has 17744 states and 23219 transitions. Word has length 245 [2020-10-12 13:30:22,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:30:22,692 INFO L479 AbstractCegarLoop]: Abstraction has 17744 states and 23219 transitions. [2020-10-12 13:30:22,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:30:22,692 INFO L276 IsEmpty]: Start isEmpty. Operand 17744 states and 23219 transitions. [2020-10-12 13:30:22,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-12 13:30:22,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:30:22,697 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:30:22,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 13:30:22,698 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:30:22,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:30:22,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1193262274, now seen corresponding path program 1 times [2020-10-12 13:30:22,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:30:22,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378387556] [2020-10-12 13:30:22,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:30:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:22,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:23,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:23,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:24,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:24,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-12 13:30:24,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:30:24,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1323 [2020-10-12 13:30:24,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:24,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:30:24,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-12 13:30:24,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-12 13:30:24,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:30:24,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:30:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:24,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:24,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:24,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:30:24,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:30:24,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:30:24,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:24,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:30:24,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:30:24,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:30:24,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:30:24,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:30:24,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:24,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:24,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:24,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:30:24,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:30:24,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-12 13:30:24,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:24,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:30:24,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:30:24,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-12 13:30:24,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:30:24,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:30:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:24,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:24,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:24,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 13:30:24,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:30:24,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-12 13:30:24,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:24,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:30:24,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:30:24,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 13:30:24,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:30:24,992 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 124 proven. 40 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:30:24,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378387556] [2020-10-12 13:30:24,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:30:24,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:30:24,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884772694] [2020-10-12 13:30:24,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:30:24,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:30:24,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:30:24,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:30:24,997 INFO L87 Difference]: Start difference. First operand 17744 states and 23219 transitions. Second operand 6 states. [2020-10-12 13:30:43,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:30:43,064 INFO L93 Difference]: Finished difference Result 50856 states and 70460 transitions. [2020-10-12 13:30:43,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:30:43,066 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 281 [2020-10-12 13:30:43,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:30:43,179 INFO L225 Difference]: With dead ends: 50856 [2020-10-12 13:30:43,179 INFO L226 Difference]: Without dead ends: 33885 [2020-10-12 13:30:43,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:30:43,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33885 states. [2020-10-12 13:30:43,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33885 to 33030. [2020-10-12 13:30:43,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33030 states. [2020-10-12 13:30:43,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33030 states to 33030 states and 44090 transitions. [2020-10-12 13:30:43,891 INFO L78 Accepts]: Start accepts. Automaton has 33030 states and 44090 transitions. Word has length 281 [2020-10-12 13:30:43,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:30:43,891 INFO L479 AbstractCegarLoop]: Abstraction has 33030 states and 44090 transitions. [2020-10-12 13:30:43,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:30:43,892 INFO L276 IsEmpty]: Start isEmpty. Operand 33030 states and 44090 transitions. [2020-10-12 13:30:43,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-12 13:30:43,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:30:43,898 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:30:43,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 13:30:43,898 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:30:43,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:30:43,899 INFO L82 PathProgramCache]: Analyzing trace with hash 957225722, now seen corresponding path program 1 times [2020-10-12 13:30:43,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:30:43,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494299776] [2020-10-12 13:30:43,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:30:43,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:43,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:44,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:44,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:45,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:45,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-10-12 13:30:45,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:30:45,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1733 [2020-10-12 13:30:45,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:45,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:30:45,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-12 13:30:45,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-12 13:30:45,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:30:45,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:30:45,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:45,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:45,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:45,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:30:45,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:30:45,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:30:45,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:45,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:30:45,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:30:45,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:30:45,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:30:45,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:30:45,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:45,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:46,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:46,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 13:30:46,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:30:46,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-12 13:30:46,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:46,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:30:46,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:30:46,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-12 13:30:46,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:30:46,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-12 13:30:46,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:46,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:46,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:46,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:46,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 13:30:46,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:30:46,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-12 13:30:46,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:46,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:30:46,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:30:46,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 13:30:46,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:30:46,528 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 124 proven. 40 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:30:46,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494299776] [2020-10-12 13:30:46,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:30:46,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:30:46,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878272878] [2020-10-12 13:30:46,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:30:46,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:30:46,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:30:46,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:30:46,531 INFO L87 Difference]: Start difference. First operand 33030 states and 44090 transitions. Second operand 7 states. [2020-10-12 13:31:07,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:31:07,178 INFO L93 Difference]: Finished difference Result 81824 states and 114332 transitions. [2020-10-12 13:31:07,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:31:07,179 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 285 [2020-10-12 13:31:07,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:31:07,337 INFO L225 Difference]: With dead ends: 81824 [2020-10-12 13:31:07,338 INFO L226 Difference]: Without dead ends: 49567 [2020-10-12 13:31:07,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:31:07,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49567 states. [2020-10-12 13:31:10,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49567 to 49399. [2020-10-12 13:31:10,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49399 states. [2020-10-12 13:31:10,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49399 states to 49399 states and 66626 transitions. [2020-10-12 13:31:10,340 INFO L78 Accepts]: Start accepts. Automaton has 49399 states and 66626 transitions. Word has length 285 [2020-10-12 13:31:10,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:31:10,341 INFO L479 AbstractCegarLoop]: Abstraction has 49399 states and 66626 transitions. [2020-10-12 13:31:10,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:31:10,342 INFO L276 IsEmpty]: Start isEmpty. Operand 49399 states and 66626 transitions. [2020-10-12 13:31:10,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-10-12 13:31:10,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:31:10,346 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, 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] [2020-10-12 13:31:10,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 13:31:10,347 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:31:10,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:31:10,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1552251279, now seen corresponding path program 1 times [2020-10-12 13:31:10,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:31:10,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [475447302] [2020-10-12 13:31:10,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:31:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:31:10,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:10,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:11,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:11,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:31:11,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-12 13:31:11,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:31:11,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1131 [2020-10-12 13:31:11,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:31:11,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:31:11,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-12 13:31:11,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-12 13:31:11,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:31:11,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:31:11,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:31:11,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:11,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:31:11,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:31:11,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:31:11,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:31:11,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:31:11,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:31:11,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:31:11,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:31:11,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:31:11,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:31:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:31:11,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:11,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:31:11,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 13:31:11,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:31:11,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-12 13:31:11,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:31:11,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:31:11,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:31:11,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-12 13:31:11,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:31:11,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-12 13:31:11,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:31:12,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:12,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:12,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:31:12,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 13:31:12,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:31:12,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-12 13:31:12,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:31:12,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:31:12,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:31:12,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-12 13:31:12,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:31:12,381 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 125 proven. 40 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:31:12,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [475447302] [2020-10-12 13:31:12,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:31:12,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:31:12,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141149637] [2020-10-12 13:31:12,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:31:12,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:31:12,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:31:12,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:31:12,384 INFO L87 Difference]: Start difference. First operand 49399 states and 66626 transitions. Second operand 6 states. [2020-10-12 13:31:31,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:31:31,351 INFO L93 Difference]: Finished difference Result 119134 states and 175059 transitions. [2020-10-12 13:31:31,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:31:31,353 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 286 [2020-10-12 13:31:31,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:31:31,727 INFO L225 Difference]: With dead ends: 119134 [2020-10-12 13:31:31,727 INFO L226 Difference]: Without dead ends: 70508 [2020-10-12 13:31:31,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:31:31,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70508 states. [2020-10-12 13:31:33,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70508 to 70132. [2020-10-12 13:31:33,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70132 states. [2020-10-12 13:31:35,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70132 states to 70132 states and 93113 transitions. [2020-10-12 13:31:35,716 INFO L78 Accepts]: Start accepts. Automaton has 70132 states and 93113 transitions. Word has length 286 [2020-10-12 13:31:35,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:31:35,717 INFO L479 AbstractCegarLoop]: Abstraction has 70132 states and 93113 transitions. [2020-10-12 13:31:35,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:31:35,717 INFO L276 IsEmpty]: Start isEmpty. Operand 70132 states and 93113 transitions. [2020-10-12 13:31:35,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-10-12 13:31:35,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:31:35,722 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:31:35,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 13:31:35,723 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:31:35,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:31:35,724 INFO L82 PathProgramCache]: Analyzing trace with hash -2098501489, now seen corresponding path program 1 times [2020-10-12 13:31:35,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:31:35,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250701104] [2020-10-12 13:31:35,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:31:35,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:31:35,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:35,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:37,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:40,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:31:40,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-12 13:31:40,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:31:40,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4913 [2020-10-12 13:31:40,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:31:40,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:31:40,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:31:40,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-12 13:31:40,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:31:40,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:31:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:31:40,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:40,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:31:40,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:31:40,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:31:40,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 13:31:40,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:31:40,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:31:40,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:31:40,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:31:40,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:31:40,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:31:40,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:31:40,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:41,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:31:41,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-12 13:31:41,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:31:41,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-12 13:31:41,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:31:41,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:31:41,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:31:41,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-12 13:31:41,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:31:41,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-12 13:31:41,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:31:41,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:31:41,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:31:41,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 13:31:41,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:31:41,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 13:31:41,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:31:41,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:31:41,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-12 13:31:41,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:31:41,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:31:41,572 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 80 proven. 90 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:31:41,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250701104] [2020-10-12 13:31:41,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:31:41,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:31:41,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266841098] [2020-10-12 13:31:41,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:31:41,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:31:41,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:31:41,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:31:41,576 INFO L87 Difference]: Start difference. First operand 70132 states and 93113 transitions. Second operand 7 states. [2020-10-12 13:32:00,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:32:00,395 INFO L93 Difference]: Finished difference Result 140122 states and 187312 transitions. [2020-10-12 13:32:00,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:32:00,397 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 290 [2020-10-12 13:32:00,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:32:00,628 INFO L225 Difference]: With dead ends: 140122 [2020-10-12 13:32:00,628 INFO L226 Difference]: Without dead ends: 70763 [2020-10-12 13:32:00,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:32:01,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70763 states. [2020-10-12 13:32:02,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70763 to 70592. [2020-10-12 13:32:02,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70592 states. [2020-10-12 13:32:02,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70592 states to 70592 states and 94295 transitions. [2020-10-12 13:32:02,219 INFO L78 Accepts]: Start accepts. Automaton has 70592 states and 94295 transitions. Word has length 290 [2020-10-12 13:32:02,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:32:02,220 INFO L479 AbstractCegarLoop]: Abstraction has 70592 states and 94295 transitions. [2020-10-12 13:32:02,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:32:02,220 INFO L276 IsEmpty]: Start isEmpty. Operand 70592 states and 94295 transitions. [2020-10-12 13:32:02,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-12 13:32:02,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:32:02,223 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] [2020-10-12 13:32:02,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 13:32:02,224 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:32:02,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:32:02,224 INFO L82 PathProgramCache]: Analyzing trace with hash -199187142, now seen corresponding path program 1 times [2020-10-12 13:32:02,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:32:02,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719563022] [2020-10-12 13:32:02,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:32:02,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:32:02,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:32:02,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:32:02,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-12 13:32:02,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:32:02,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 442 [2020-10-12 13:32:02,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:32:02,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:32:02,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 282 [2020-10-12 13:32:02,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 13:32:02,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:32:02,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:32:02,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:32:02,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:32:02,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:32:02,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:32:02,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:32:02,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:32:02,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:32:02,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:32:02,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:32:02,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:32:02,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:32:02,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:32:02,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:32:02,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:32:02,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:32:02,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 13:32:02,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:32:02,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 13:32:02,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:32:02,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:32:02,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:32:02,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:32:02,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:32:02,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-12 13:32:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:32:03,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:32:03,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:32:03,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 13:32:03,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:32:03,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-12 13:32:03,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:32:03,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:32:03,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:32:03,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-12 13:32:03,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:32:03,601 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-12 13:32:03,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719563022] [2020-10-12 13:32:03,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:32:03,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:32:03,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136955317] [2020-10-12 13:32:03,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:32:03,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:32:03,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:32:03,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:32:03,605 INFO L87 Difference]: Start difference. First operand 70592 states and 94295 transitions. Second operand 5 states. [2020-10-12 13:32:25,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:32:25,546 INFO L93 Difference]: Finished difference Result 171219 states and 237348 transitions. [2020-10-12 13:32:25,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:32:25,550 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 317 [2020-10-12 13:32:25,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:32:25,864 INFO L225 Difference]: With dead ends: 171219 [2020-10-12 13:32:25,865 INFO L226 Difference]: Without dead ends: 101400 [2020-10-12 13:32:25,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:32:26,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101400 states. [2020-10-12 13:32:27,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101400 to 100619. [2020-10-12 13:32:27,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100619 states.