/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=NARROWEST --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/reducercommutativity/max05-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 13:07:55,637 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 13:07:55,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 13:07:55,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 13:07:55,664 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 13:07:55,665 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 13:07:55,666 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 13:07:55,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 13:07:55,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 13:07:55,670 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 13:07:55,671 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 13:07:55,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 13:07:55,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 13:07:55,673 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 13:07:55,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 13:07:55,675 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 13:07:55,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 13:07:55,677 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 13:07:55,679 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 13:07:55,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 13:07:55,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 13:07:55,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 13:07:55,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 13:07:55,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 13:07:55,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 13:07:55,687 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 13:07:55,687 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 13:07:55,688 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 13:07:55,689 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 13:07:55,689 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 13:07:55,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 13:07:55,690 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 13:07:55,691 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 13:07:55,692 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 13:07:55,693 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 13:07:55,693 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 13:07:55,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 13:07:55,694 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 13:07:55,694 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 13:07:55,695 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 13:07:55,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 13:07:55,699 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 [2020-10-13 13:07:55,739 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 13:07:55,740 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 13:07:55,741 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 13:07:55,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 13:07:55,741 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 13:07:55,742 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 13:07:55,742 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 13:07:55,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 13:07:55,743 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 13:07:55,743 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 13:07:55,744 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 13:07:55,744 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 13:07:55,744 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 13:07:55,744 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 13:07:55,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 13:07:55,745 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 13:07:55,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 13:07:55,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 13:07:55,746 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 13:07:55,746 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 13:07:55,746 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 13:07:55,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:07:55,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 13:07:55,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 13:07:55,747 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 13:07:55,747 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 13:07:55,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 13:07:55,748 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 13:07:55,748 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 13:07:55,748 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 13:07:56,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 13:07:56,078 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 13:07:56,081 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 13:07:56,083 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 13:07:56,083 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 13:07:56,084 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/max05-1.i [2020-10-13 13:07:56,144 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a028287e/a3b9a6e8354b403bb6e2abc6e5a78ac3/FLAGd51cefe11 [2020-10-13 13:07:56,569 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 13:07:56,570 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/max05-1.i [2020-10-13 13:07:56,576 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a028287e/a3b9a6e8354b403bb6e2abc6e5a78ac3/FLAGd51cefe11 [2020-10-13 13:07:56,992 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a028287e/a3b9a6e8354b403bb6e2abc6e5a78ac3 [2020-10-13 13:07:57,002 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 13:07:57,005 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 13:07:57,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 13:07:57,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 13:07:57,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 13:07:57,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:07:56" (1/1) ... [2020-10-13 13:07:57,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bd36ef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:57, skipping insertion in model container [2020-10-13 13:07:57,015 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:07:56" (1/1) ... [2020-10-13 13:07:57,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 13:07:57,045 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 13:07:57,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:07:57,257 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 13:07:57,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:07:57,297 INFO L208 MainTranslator]: Completed translation [2020-10-13 13:07:57,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:57 WrapperNode [2020-10-13 13:07:57,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 13:07:57,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 13:07:57,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 13:07:57,299 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 13:07:57,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:57" (1/1) ... [2020-10-13 13:07:57,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:57" (1/1) ... [2020-10-13 13:07:57,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:57" (1/1) ... [2020-10-13 13:07:57,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:57" (1/1) ... [2020-10-13 13:07:57,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:57" (1/1) ... [2020-10-13 13:07:57,421 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:57" (1/1) ... [2020-10-13 13:07:57,422 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:57" (1/1) ... [2020-10-13 13:07:57,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 13:07:57,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 13:07:57,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 13:07:57,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 13:07:57,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:57" (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 [2020-10-13 13:07:57,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 13:07:57,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 13:07:57,492 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2020-10-13 13:07:57,492 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 13:07:57,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 13:07:57,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 13:07:57,494 INFO L130 BoogieDeclarations]: Found specification of procedure max [2020-10-13 13:07:57,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 13:07:57,495 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 13:07:57,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 13:07:57,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 13:07:57,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 13:07:57,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 13:07:57,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 13:07:57,827 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 13:07:57,828 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-13 13:07:57,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:07:57 BoogieIcfgContainer [2020-10-13 13:07:57,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 13:07:57,833 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 13:07:57,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 13:07:57,836 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 13:07:57,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:07:56" (1/3) ... [2020-10-13 13:07:57,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6418d0ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:07:57, skipping insertion in model container [2020-10-13 13:07:57,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:57" (2/3) ... [2020-10-13 13:07:57,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6418d0ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:07:57, skipping insertion in model container [2020-10-13 13:07:57,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:07:57" (3/3) ... [2020-10-13 13:07:57,840 INFO L109 eAbstractionObserver]: Analyzing ICFG max05-1.i [2020-10-13 13:07:57,850 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 13:07:57,857 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 13:07:57,870 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 13:07:57,889 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 13:07:57,889 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 13:07:57,889 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 13:07:57,889 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 13:07:57,889 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 13:07:57,890 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 13:07:57,890 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 13:07:57,890 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 13:07:57,907 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-13 13:07:57,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 13:07:57,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:07:57,915 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:07:57,915 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:07:57,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:07:57,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1379671032, now seen corresponding path program 1 times [2020-10-13 13:07:57,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:07:57,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324708504] [2020-10-13 13:07:57,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:07:58,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:58,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:58,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:58,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:58,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:58,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:58,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:59,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:59,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 13:07:59,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:07:59,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1226 [2020-10-13 13:07:59,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:59,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:59,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 13:07:59,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:59,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 13:07:59,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:07:59,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:59,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:59,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:59,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:07:59,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:59,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:07:59,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:59,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:59,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:59,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:59,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:59,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 13:07:59,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:59,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:59,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:59,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:59,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:07:59,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:59,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:07:59,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:59,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:59,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:07:59,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:59,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:59,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 13:07:59,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:59,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:59,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:59,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:07:59,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:59,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:07:59,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:59,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:59,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:07:59,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:59,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:59,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 13:07:59,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:59,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:59,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:59,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:59,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:07:59,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:59,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:07:59,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:59,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:59,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:07:59,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:59,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:59,418 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-13 13:07:59,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324708504] [2020-10-13 13:07:59,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:07:59,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-10-13 13:07:59,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567897988] [2020-10-13 13:07:59,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 13:07:59,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:07:59,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 13:07:59,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 13:07:59,448 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-10-13 13:07:59,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:07:59,575 INFO L93 Difference]: Finished difference Result 58 states and 77 transitions. [2020-10-13 13:07:59,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 13:07:59,577 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-13 13:07:59,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:07:59,586 INFO L225 Difference]: With dead ends: 58 [2020-10-13 13:07:59,586 INFO L226 Difference]: Without dead ends: 28 [2020-10-13 13:07:59,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 13:07:59,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-13 13:07:59,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-13 13:07:59,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-13 13:07:59,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2020-10-13 13:07:59,629 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 32 [2020-10-13 13:07:59,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:07:59,629 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2020-10-13 13:07:59,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 13:07:59,630 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2020-10-13 13:07:59,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 13:07:59,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:07:59,632 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:07:59,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 13:07:59,633 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:07:59,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:07:59,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1771965707, now seen corresponding path program 1 times [2020-10-13 13:07:59,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:07:59,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626605764] [2020-10-13 13:07:59,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:07:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:59,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:59,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:59,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:59,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:59,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:00,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:00,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:00,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 13:08:00,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:08:00,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-10-13 13:08:00,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:00,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:08:00,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 13:08:00,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 13:08:00,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:00,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:08:00,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:00,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:00,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:00,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:08:00,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:00,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:08:00,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:00,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:00,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:00,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:00,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:08:00,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 13:08:00,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:00,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:00,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:00,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:00,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:08:00,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:00,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:08:00,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:00,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:00,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:00,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:00,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:08:00,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 13:08:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:00,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:00,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:00,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:08:00,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:00,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:08:00,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:00,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:08:00,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:08:00,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 13:08:00,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:08:00,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 13:08:00,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:00,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:00,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:00,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:00,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:08:00,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:00,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:08:00,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:00,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:00,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:08:00,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:00,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:08:00,760 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-13 13:08:00,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626605764] [2020-10-13 13:08:00,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:08:00,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-13 13:08:00,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186002651] [2020-10-13 13:08:00,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:08:00,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:08:00,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:08:00,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:08:00,766 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 4 states. [2020-10-13 13:08:00,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:08:00,881 INFO L93 Difference]: Finished difference Result 51 states and 64 transitions. [2020-10-13 13:08:00,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:08:00,882 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-13 13:08:00,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:08:00,884 INFO L225 Difference]: With dead ends: 51 [2020-10-13 13:08:00,884 INFO L226 Difference]: Without dead ends: 32 [2020-10-13 13:08:00,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:08:00,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-13 13:08:00,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2020-10-13 13:08:00,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-13 13:08:00,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2020-10-13 13:08:00,895 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 32 [2020-10-13 13:08:00,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:08:00,895 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2020-10-13 13:08:00,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:08:00,895 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2020-10-13 13:08:00,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 13:08:00,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:08:00,897 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:08:00,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 13:08:00,898 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:08:00,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:08:00,899 INFO L82 PathProgramCache]: Analyzing trace with hash -2021843290, now seen corresponding path program 1 times [2020-10-13 13:08:00,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:08:00,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712013318] [2020-10-13 13:08:00,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:08:00,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:00,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:00,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:00,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:00,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:01,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:03,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:03,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 13:08:03,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:08:03,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3055 [2020-10-13 13:08:03,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:03,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:08:03,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:08:03,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 13:08:03,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:03,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:08:03,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:03,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:03,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:03,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:08:03,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:03,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:08:03,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:03,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:03,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:03,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:03,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:03,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 13:08:03,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:03,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:04,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:04,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:04,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:08:04,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:04,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 13:08:04,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:04,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:04,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:08:04,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:04,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:04,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 13:08:04,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:04,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:04,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:04,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:04,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:08:04,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:04,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 13:08:04,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:04,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:04,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:08:04,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:04,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:04,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 13:08:04,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:04,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:04,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:04,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:04,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:08:04,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:04,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 13:08:04,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:04,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:04,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:08:04,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:04,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:04,082 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-13 13:08:04,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712013318] [2020-10-13 13:08:04,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:08:04,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:08:04,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371795388] [2020-10-13 13:08:04,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:08:04,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:08:04,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:08:04,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:08:04,085 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 4 states. [2020-10-13 13:08:04,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:08:04,160 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-13 13:08:04,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:08:04,160 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-10-13 13:08:04,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:08:04,162 INFO L225 Difference]: With dead ends: 52 [2020-10-13 13:08:04,162 INFO L226 Difference]: Without dead ends: 31 [2020-10-13 13:08:04,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:08:04,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-13 13:08:04,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-10-13 13:08:04,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-13 13:08:04,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-10-13 13:08:04,170 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 44 [2020-10-13 13:08:04,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:08:04,170 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-10-13 13:08:04,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:08:04,170 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-10-13 13:08:04,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 13:08:04,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:08:04,172 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:08:04,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 13:08:04,173 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:08:04,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:08:04,173 INFO L82 PathProgramCache]: Analyzing trace with hash 727331048, now seen corresponding path program 1 times [2020-10-13 13:08:04,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:08:04,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355360840] [2020-10-13 13:08:04,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:08:04,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:04,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:04,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:04,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:04,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:04,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:08,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:08,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 13:08:08,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:08:08,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4532 [2020-10-13 13:08:08,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:08,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:08:08,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 13:08:08,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 13:08:08,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:08,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:08:08,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:08,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:08,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:08,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:08:08,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:08,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:08:08,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:08,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:08,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:08,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:08,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:08,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 13:08:08,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:08,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:08,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:08,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:08,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:08:08,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:08,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:08:08,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:08,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:08,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:08,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:08,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:08,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 13:08:08,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:08,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:08,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:08,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:08,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:08:08,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:08,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:08:08,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:08,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:08,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:08,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:08,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:08,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 13:08:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:08,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:08,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:08,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:08,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:08:08,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:08,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:08:08,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:08,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:08,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:08:08,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:08,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:08,826 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-10-13 13:08:08,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355360840] [2020-10-13 13:08:08,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:08:08,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:08:08,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540919341] [2020-10-13 13:08:08,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:08:08,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:08:08,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:08:08,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:08:08,829 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 4 states. [2020-10-13 13:08:08,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:08:08,897 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2020-10-13 13:08:08,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:08:08,897 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-13 13:08:08,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:08:08,898 INFO L225 Difference]: With dead ends: 47 [2020-10-13 13:08:08,899 INFO L226 Difference]: Without dead ends: 32 [2020-10-13 13:08:08,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:08:08,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-13 13:08:08,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-13 13:08:08,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-13 13:08:08,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-10-13 13:08:08,906 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 46 [2020-10-13 13:08:08,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:08:08,907 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-10-13 13:08:08,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:08:08,908 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-10-13 13:08:08,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 13:08:08,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:08:08,909 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:08:08,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 13:08:08,910 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:08:08,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:08:08,910 INFO L82 PathProgramCache]: Analyzing trace with hash -270429754, now seen corresponding path program 1 times [2020-10-13 13:08:08,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:08:08,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346803176] [2020-10-13 13:08:08,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:08:08,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:08,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:08,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:08,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:08,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:09,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:13,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:13,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 13:08:13,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:08:13,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 13:08:13,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:13,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:08:13,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 13:08:13,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 13:08:13,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:13,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:08:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:13,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:13,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:13,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:08:13,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:13,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:08:13,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:13,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:13,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:13,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:13,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:13,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 13:08:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:13,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:13,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:14,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:14,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:08:14,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:14,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 13:08:14,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:14,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:14,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:14,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:14,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:14,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 13:08:14,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:14,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:14,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:14,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:14,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:08:14,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:14,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 13:08:14,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:14,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:14,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:14,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:14,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:14,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 13:08:14,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:14,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:14,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:14,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:14,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:08:14,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:14,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:08:14,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:14,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:14,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:08:14,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:14,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:14,059 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-10-13 13:08:14,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346803176] [2020-10-13 13:08:14,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:08:14,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 13:08:14,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030280000] [2020-10-13 13:08:14,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:08:14,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:08:14,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:08:14,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:08:14,063 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 5 states. [2020-10-13 13:08:14,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:08:14,155 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2020-10-13 13:08:14,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:08:14,157 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2020-10-13 13:08:14,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:08:14,158 INFO L225 Difference]: With dead ends: 49 [2020-10-13 13:08:14,159 INFO L226 Difference]: Without dead ends: 34 [2020-10-13 13:08:14,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:08:14,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-13 13:08:14,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-13 13:08:14,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-13 13:08:14,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2020-10-13 13:08:14,166 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 48 [2020-10-13 13:08:14,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:08:14,166 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2020-10-13 13:08:14,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:08:14,166 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2020-10-13 13:08:14,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 13:08:14,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:08:14,168 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:08:14,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 13:08:14,168 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:08:14,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:08:14,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1340853468, now seen corresponding path program 2 times [2020-10-13 13:08:14,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:08:14,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617922257] [2020-10-13 13:08:14,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:08:14,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:14,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:14,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:14,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:14,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:14,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:19,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:19,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 13:08:19,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:08:19,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 13:08:19,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:19,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:08:19,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:08:19,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 13:08:19,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:19,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:08:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:19,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:19,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:19,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:08:19,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:19,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:08:19,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:19,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:19,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:19,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:19,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:19,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 13:08:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:19,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:19,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:19,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:19,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:08:19,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:19,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:08:19,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:19,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:19,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:08:19,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:19,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:08:19,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 13:08:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:19,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:19,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:19,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:19,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:08:19,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:19,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:08:19,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:19,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:19,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:08:19,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:19,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:19,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 13:08:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:19,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:19,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:19,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:19,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:08:19,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:19,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 13:08:19,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:19,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:19,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:08:19,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:19,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:19,280 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 13:08:19,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617922257] [2020-10-13 13:08:19,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:08:19,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 13:08:19,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379824946] [2020-10-13 13:08:19,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:08:19,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:08:19,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:08:19,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:08:19,285 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 5 states. [2020-10-13 13:08:19,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:08:19,376 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-10-13 13:08:19,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:08:19,377 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-10-13 13:08:19,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:08:19,378 INFO L225 Difference]: With dead ends: 60 [2020-10-13 13:08:19,378 INFO L226 Difference]: Without dead ends: 36 [2020-10-13 13:08:19,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:08:19,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-13 13:08:19,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-13 13:08:19,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-13 13:08:19,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2020-10-13 13:08:19,384 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 50 [2020-10-13 13:08:19,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:08:19,385 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2020-10-13 13:08:19,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:08:19,385 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2020-10-13 13:08:19,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 13:08:19,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:08:19,386 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:08:19,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 13:08:19,387 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:08:19,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:08:19,387 INFO L82 PathProgramCache]: Analyzing trace with hash 230099942, now seen corresponding path program 3 times [2020-10-13 13:08:19,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:08:19,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859852794] [2020-10-13 13:08:19,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:08:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:19,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:19,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:19,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:19,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:19,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:24,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:24,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 13:08:24,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:08:24,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 13:08:24,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:24,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:08:24,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 13:08:24,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:08:24,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:24,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:08:24,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:24,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:24,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:24,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:08:24,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:24,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:08:24,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:24,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:24,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:24,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:24,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:24,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 13:08:24,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:24,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:24,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:24,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:24,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:08:24,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:24,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:08:24,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:24,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:24,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:24,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:24,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:24,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 13:08:24,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:24,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:24,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:24,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:08:24,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:24,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:08:24,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:24,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:08:24,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:08:24,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:08:24,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:24,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 13:08:24,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:24,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:24,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:24,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:24,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:08:24,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:24,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:08:24,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:24,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:24,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:08:24,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:24,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:24,484 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-13 13:08:24,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859852794] [2020-10-13 13:08:24,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:08:24,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 13:08:24,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709165122] [2020-10-13 13:08:24,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:08:24,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:08:24,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:08:24,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:08:24,487 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand 5 states. [2020-10-13 13:08:24,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:08:24,586 INFO L93 Difference]: Finished difference Result 65 states and 79 transitions. [2020-10-13 13:08:24,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:08:24,587 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-10-13 13:08:24,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:08:24,588 INFO L225 Difference]: With dead ends: 65 [2020-10-13 13:08:24,588 INFO L226 Difference]: Without dead ends: 42 [2020-10-13 13:08:24,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:08:24,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-13 13:08:24,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2020-10-13 13:08:24,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-13 13:08:24,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-10-13 13:08:24,594 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 52 [2020-10-13 13:08:24,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:08:24,603 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-10-13 13:08:24,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:08:24,603 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-10-13 13:08:24,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 13:08:24,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:08:24,605 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:08:24,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 13:08:24,605 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:08:24,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:08:24,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1007027967, now seen corresponding path program 4 times [2020-10-13 13:08:24,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:08:24,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656004757] [2020-10-13 13:08:24,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:08:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:24,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:24,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:24,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:24,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:24,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:27,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:29,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:29,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:29,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 13:08:29,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:08:29,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 13:08:29,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:29,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:08:29,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-13 13:08:29,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:08:29,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:29,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:08:29,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:29,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:29,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:29,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:08:29,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:29,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:08:29,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:29,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:29,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:29,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:29,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:29,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 13:08:29,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:29,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:29,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:29,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:29,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:29,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:29,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:08:29,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:29,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:29,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:29,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:29,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:29,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 13:08:29,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:29,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:29,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:29,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:29,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:29,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:29,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 13:08:29,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:29,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:29,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:29,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:29,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:29,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 13:08:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:29,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:29,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:29,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:29,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:29,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:29,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:08:29,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:29,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:29,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:08:29,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:29,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:29,755 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-13 13:08:29,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656004757] [2020-10-13 13:08:29,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:08:29,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 13:08:29,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070797224] [2020-10-13 13:08:29,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:08:29,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:08:29,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:08:29,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:08:29,758 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 6 states. [2020-10-13 13:08:29,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:08:29,838 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2020-10-13 13:08:29,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:08:29,838 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-10-13 13:08:29,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:08:29,839 INFO L225 Difference]: With dead ends: 61 [2020-10-13 13:08:29,839 INFO L226 Difference]: Without dead ends: 42 [2020-10-13 13:08:29,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:08:29,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-13 13:08:29,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-13 13:08:29,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-13 13:08:29,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2020-10-13 13:08:29,846 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 64 [2020-10-13 13:08:29,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:08:29,846 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2020-10-13 13:08:29,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:08:29,846 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2020-10-13 13:08:29,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 13:08:29,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:08:29,847 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:08:29,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 13:08:29,848 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:08:29,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:08:29,848 INFO L82 PathProgramCache]: Analyzing trace with hash 142498655, now seen corresponding path program 5 times [2020-10-13 13:08:29,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:08:29,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599949386] [2020-10-13 13:08:29,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:08:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:29,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:29,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:29,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:29,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:29,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:33,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:34,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:34,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 13:08:34,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:08:34,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 13:08:34,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:34,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:08:34,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:08:34,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:08:34,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:34,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:08:34,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:34,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:34,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:34,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:08:34,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:34,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:08:34,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:34,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:34,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:34,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:34,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:34,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 13:08:34,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:34,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:34,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:34,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:34,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:34,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:34,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 13:08:34,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:34,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:34,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:08:34,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:34,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:34,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 13:08:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:34,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:34,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:34,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:34,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:34,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:34,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 13:08:34,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:34,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:34,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:08:34,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:34,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:34,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 13:08:34,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:34,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:34,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:34,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:34,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:34,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:34,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 13:08:34,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:34,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:34,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:08:34,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:34,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:34,995 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-10-13 13:08:35,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599949386] [2020-10-13 13:08:35,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:08:35,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 13:08:35,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351071939] [2020-10-13 13:08:35,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:08:35,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:08:35,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:08:35,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:08:35,004 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 6 states. [2020-10-13 13:08:35,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:08:35,096 INFO L93 Difference]: Finished difference Result 74 states and 86 transitions. [2020-10-13 13:08:35,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:08:35,097 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-10-13 13:08:35,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:08:35,098 INFO L225 Difference]: With dead ends: 74 [2020-10-13 13:08:35,098 INFO L226 Difference]: Without dead ends: 44 [2020-10-13 13:08:35,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:08:35,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-13 13:08:35,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-13 13:08:35,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-13 13:08:35,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2020-10-13 13:08:35,106 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 66 [2020-10-13 13:08:35,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:08:35,107 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2020-10-13 13:08:35,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:08:35,107 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2020-10-13 13:08:35,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 13:08:35,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:08:35,111 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:08:35,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 13:08:35,111 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:08:35,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:08:35,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1445687329, now seen corresponding path program 6 times [2020-10-13 13:08:35,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:08:35,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705000313] [2020-10-13 13:08:35,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:08:35,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:35,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:35,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:35,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:35,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:35,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:37,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:40,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:40,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 13:08:40,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:08:40,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 13:08:40,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:40,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:08:40,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:08:40,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 13:08:40,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:40,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:08:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:40,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:40,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:40,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:08:40,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:40,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:08:40,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:40,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:40,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:40,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:40,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:40,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 13:08:40,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:40,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:40,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:40,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:40,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:40,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:40,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 13:08:40,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:40,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:40,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:08:40,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:40,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:40,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 13:08:40,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:40,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:40,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:40,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:40,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:40,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:40,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 13:08:40,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:40,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:40,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:08:40,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:40,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:40,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:08:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:40,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:40,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:40,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:40,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:40,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:40,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:08:40,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:40,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:40,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:08:40,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:40,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:40,249 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-10-13 13:08:40,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705000313] [2020-10-13 13:08:40,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:08:40,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 13:08:40,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359530004] [2020-10-13 13:08:40,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 13:08:40,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:08:40,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 13:08:40,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:08:40,252 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 7 states. [2020-10-13 13:08:40,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:08:40,335 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2020-10-13 13:08:40,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:08:40,335 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-10-13 13:08:40,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:08:40,336 INFO L225 Difference]: With dead ends: 76 [2020-10-13 13:08:40,336 INFO L226 Difference]: Without dead ends: 46 [2020-10-13 13:08:40,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:08:40,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-13 13:08:40,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-13 13:08:40,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-13 13:08:40,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2020-10-13 13:08:40,342 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 68 [2020-10-13 13:08:40,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:08:40,342 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2020-10-13 13:08:40,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 13:08:40,343 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2020-10-13 13:08:40,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 13:08:40,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:08:40,344 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:08:40,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 13:08:40,344 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:08:40,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:08:40,345 INFO L82 PathProgramCache]: Analyzing trace with hash -320447389, now seen corresponding path program 7 times [2020-10-13 13:08:40,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:08:40,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753941580] [2020-10-13 13:08:40,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:08:40,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:40,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:40,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:40,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:40,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:40,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:43,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:45,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:45,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 13:08:45,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:08:45,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 13:08:45,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:45,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:08:45,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-13 13:08:45,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 13:08:45,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:45,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:08:45,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:45,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:45,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:45,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:08:45,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:45,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:08:45,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:45,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:45,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:45,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:45,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:45,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 13:08:45,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:45,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:45,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:45,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:45,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:45,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:45,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:08:45,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:45,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:45,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:45,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:45,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:45,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 13:08:45,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:45,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:45,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:45,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:45,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:45,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:45,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:08:45,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:45,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:45,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:45,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:45,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:45,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 13:08:45,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:45,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:45,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:45,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:45,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:45,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:45,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:08:45,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:45,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:45,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:08:45,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:45,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:45,475 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-13 13:08:45,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753941580] [2020-10-13 13:08:45,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:08:45,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 13:08:45,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808053028] [2020-10-13 13:08:45,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 13:08:45,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:08:45,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 13:08:45,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:08:45,477 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 7 states. [2020-10-13 13:08:45,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:08:45,574 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2020-10-13 13:08:45,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:08:45,575 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-10-13 13:08:45,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:08:45,576 INFO L225 Difference]: With dead ends: 66 [2020-10-13 13:08:45,576 INFO L226 Difference]: Without dead ends: 47 [2020-10-13 13:08:45,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:08:45,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-13 13:08:45,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-13 13:08:45,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-13 13:08:45,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-10-13 13:08:45,582 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 70 [2020-10-13 13:08:45,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:08:45,582 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-10-13 13:08:45,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 13:08:45,582 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-10-13 13:08:45,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 13:08:45,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:08:45,583 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:08:45,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 13:08:45,584 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:08:45,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:08:45,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1478529471, now seen corresponding path program 8 times [2020-10-13 13:08:45,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:08:45,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233168777] [2020-10-13 13:08:45,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:08:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:45,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:45,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:45,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:45,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:50,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:50,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:50,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:50,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:50,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 13:08:50,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:08:50,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 13:08:50,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:50,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:08:50,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 13:08:50,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:08:50,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:50,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:08:50,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:50,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:50,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:50,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:08:50,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:50,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:08:50,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:50,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:50,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:50,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:50,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:50,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 13:08:50,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:50,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:50,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:50,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:50,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:50,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:08:50,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:50,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:08:50,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:08:50,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:08:50,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:50,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 13:08:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:50,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:50,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:50,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:50,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:50,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:50,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:08:50,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:50,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:50,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:08:50,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:50,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:50,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 13:08:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:50,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:50,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:50,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:50,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:50,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:50,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:08:50,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:50,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:50,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:08:50,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:50,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:50,682 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-13 13:08:50,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233168777] [2020-10-13 13:08:50,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:08:50,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 13:08:50,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418094693] [2020-10-13 13:08:50,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:08:50,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:08:50,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:08:50,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:08:50,684 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand 6 states. [2020-10-13 13:08:50,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:08:50,816 INFO L93 Difference]: Finished difference Result 85 states and 101 transitions. [2020-10-13 13:08:50,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:08:50,817 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2020-10-13 13:08:50,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:08:50,818 INFO L225 Difference]: With dead ends: 85 [2020-10-13 13:08:50,818 INFO L226 Difference]: Without dead ends: 54 [2020-10-13 13:08:50,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:08:50,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-13 13:08:50,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2020-10-13 13:08:50,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-13 13:08:50,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2020-10-13 13:08:50,824 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 72 [2020-10-13 13:08:50,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:08:50,824 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2020-10-13 13:08:50,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:08:50,824 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2020-10-13 13:08:50,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-13 13:08:50,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:08:50,825 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:08:50,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 13:08:50,826 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:08:50,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:08:50,826 INFO L82 PathProgramCache]: Analyzing trace with hash 517011164, now seen corresponding path program 9 times [2020-10-13 13:08:50,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:08:50,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900935549] [2020-10-13 13:08:50,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:08:50,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:50,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:50,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:50,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:50,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:55,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:55,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 13:08:55,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:08:55,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 13:08:55,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:55,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 13:08:55,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:08:55,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:08:55,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:55,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:08:55,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:55,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:55,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:55,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:08:55,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:55,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:08:55,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:55,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:55,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:55,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:55,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:55,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 13:08:55,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:55,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:55,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:55,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:55,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:08:55,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:55,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 13:08:55,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:55,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:55,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:08:55,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:55,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:55,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 13:08:55,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:55,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:55,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:55,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:55,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:08:55,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:55,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 13:08:55,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:55,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:55,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:08:55,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:55,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:55,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:08:55,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:55,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:55,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:56,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:56,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:08:56,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:56,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 13:08:56,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:56,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:56,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:08:56,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:56,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:56,016 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2020-10-13 13:08:56,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900935549] [2020-10-13 13:08:56,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:08:56,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 13:08:56,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512046800] [2020-10-13 13:08:56,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:08:56,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:08:56,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:08:56,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:08:56,017 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand 8 states. [2020-10-13 13:08:56,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:08:56,117 INFO L93 Difference]: Finished difference Result 89 states and 103 transitions. [2020-10-13 13:08:56,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 13:08:56,118 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-10-13 13:08:56,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:08:56,119 INFO L225 Difference]: With dead ends: 89 [2020-10-13 13:08:56,119 INFO L226 Difference]: Without dead ends: 53 [2020-10-13 13:08:56,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:08:56,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-13 13:08:56,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-10-13 13:08:56,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-13 13:08:56,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2020-10-13 13:08:56,127 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 84 [2020-10-13 13:08:56,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:08:56,127 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2020-10-13 13:08:56,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:08:56,128 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2020-10-13 13:08:56,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-13 13:08:56,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:08:56,128 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:08:56,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 13:08:56,129 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:08:56,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:08:56,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1711218462, now seen corresponding path program 10 times [2020-10-13 13:08:56,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:08:56,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995006020] [2020-10-13 13:08:56,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:08:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:56,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:56,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:56,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:59,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:59,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:59,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:59,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:00,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:00,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:01,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:01,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 13:09:01,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:09:01,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 13:09:01,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:01,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:09:01,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 13:09:01,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:09:01,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:01,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:01,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:01,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:01,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:01,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:01,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:01,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:09:01,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:01,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:01,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:01,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:01,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:01,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 13:09:01,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:01,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:01,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:01,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:01,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:09:01,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:01,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 13:09:01,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:01,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:01,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:01,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:01,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:01,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 13:09:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:01,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:01,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:01,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:01,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:09:01,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:01,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 13:09:01,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:01,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:01,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:01,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:01,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:01,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 13:09:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:01,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:01,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:01,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:09:01,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:01,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 13:09:01,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:01,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:09:01,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:09:01,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:09:01,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:01,300 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 92 proven. 15 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-10-13 13:09:01,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995006020] [2020-10-13 13:09:01,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:01,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 13:09:01,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557756988] [2020-10-13 13:09:01,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 13:09:01,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:01,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 13:09:01,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:09:01,302 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand 7 states. [2020-10-13 13:09:01,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:01,441 INFO L93 Difference]: Finished difference Result 95 states and 113 transitions. [2020-10-13 13:09:01,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:09:01,442 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 86 [2020-10-13 13:09:01,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:01,443 INFO L225 Difference]: With dead ends: 95 [2020-10-13 13:09:01,443 INFO L226 Difference]: Without dead ends: 60 [2020-10-13 13:09:01,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:09:01,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-13 13:09:01,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2020-10-13 13:09:01,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-13 13:09:01,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 65 transitions. [2020-10-13 13:09:01,451 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 65 transitions. Word has length 86 [2020-10-13 13:09:01,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:01,451 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 65 transitions. [2020-10-13 13:09:01,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 13:09:01,451 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 65 transitions. [2020-10-13 13:09:01,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 13:09:01,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:01,452 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:09:01,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 13:09:01,453 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:01,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:01,453 INFO L82 PathProgramCache]: Analyzing trace with hash -308394951, now seen corresponding path program 11 times [2020-10-13 13:09:01,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:01,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013472448] [2020-10-13 13:09:01,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:01,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:01,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:01,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:06,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:06,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 13:09:06,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 13:09:06,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 13:09:06,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:06,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 13:09:06,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 13:09:06,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:09:06,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:06,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:06,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:06,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:06,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:06,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:06,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:09:06,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:06,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:06,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:06,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:06,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:06,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 13:09:06,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:06,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:06,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:06,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:09:06,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:06,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 13:09:06,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:06,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 13:09:06,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:09:06,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:09:06,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:06,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 13:09:06,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:06,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:06,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:06,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:06,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:09:06,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:06,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 13:09:06,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:06,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:06,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:09:06,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:06,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:09:06,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 13:09:06,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:06,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:06,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:06,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:06,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:09:06,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:06,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 13:09:06,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:06,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:06,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:09:06,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:06,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:09:06,736 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2020-10-13 13:09:06,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013472448] [2020-10-13 13:09:06,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:06,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 13:09:06,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218525120] [2020-10-13 13:09:06,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:09:06,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:06,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:09:06,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:09:06,740 INFO L87 Difference]: Start difference. First operand 57 states and 65 transitions. Second operand 8 states. [2020-10-13 13:09:06,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:06,976 INFO L93 Difference]: Finished difference Result 100 states and 119 transitions. [2020-10-13 13:09:06,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 13:09:06,977 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2020-10-13 13:09:06,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:06,978 INFO L225 Difference]: With dead ends: 100 [2020-10-13 13:09:06,978 INFO L226 Difference]: Without dead ends: 61 [2020-10-13 13:09:06,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:09:06,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-13 13:09:06,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-10-13 13:09:07,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-13 13:09:07,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2020-10-13 13:09:07,001 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 98 [2020-10-13 13:09:07,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:07,001 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2020-10-13 13:09:07,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:09:07,002 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2020-10-13 13:09:07,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 13:09:07,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:07,008 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:09:07,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 13:09:07,008 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:07,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:07,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1065117484, now seen corresponding path program 12 times [2020-10-13 13:09:07,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:07,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389953055] [2020-10-13 13:09:07,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:07,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:07,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:07,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:07,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:08,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:09,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:09,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:09,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:09,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:10,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:10,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:11,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:12,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:12,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 13:09:12,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 13:09:12,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 13:09:12,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:12,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 13:09:12,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 13:09:12,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 13:09:12,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:12,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:12,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:12,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:12,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:12,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:12,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:09:12,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:12,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:12,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:12,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:12,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:12,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 13:09:12,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:12,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:12,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:12,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:12,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:09:12,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:12,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-13 13:09:12,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:12,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 13:09:12,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:12,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 13:09:12,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:12,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 13:09:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:12,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:12,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:12,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:12,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:09:12,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:12,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-13 13:09:12,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:12,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 13:09:12,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:09:12,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 13:09:12,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:12,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:09:12,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:12,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:12,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:12,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:09:12,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:12,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:09:12,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:12,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:12,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 13:09:12,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:12,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:12,621 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2020-10-13 13:09:12,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389953055] [2020-10-13 13:09:12,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:12,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 13:09:12,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815041072] [2020-10-13 13:09:12,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 13:09:12,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:12,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 13:09:12,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:09:12,627 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand 11 states. [2020-10-13 13:09:13,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:13,225 INFO L93 Difference]: Finished difference Result 135 states and 158 transitions. [2020-10-13 13:09:13,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 13:09:13,225 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 110 [2020-10-13 13:09:13,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:13,227 INFO L225 Difference]: With dead ends: 135 [2020-10-13 13:09:13,227 INFO L226 Difference]: Without dead ends: 94 [2020-10-13 13:09:13,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2020-10-13 13:09:13,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-13 13:09:13,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 85. [2020-10-13 13:09:13,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-13 13:09:13,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 102 transitions. [2020-10-13 13:09:13,257 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 102 transitions. Word has length 110 [2020-10-13 13:09:13,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:13,257 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 102 transitions. [2020-10-13 13:09:13,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 13:09:13,258 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 102 transitions. [2020-10-13 13:09:13,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 13:09:13,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:13,259 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:09:13,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 13:09:13,260 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:13,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:13,260 INFO L82 PathProgramCache]: Analyzing trace with hash -504417706, now seen corresponding path program 1 times [2020-10-13 13:09:13,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:13,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107261436] [2020-10-13 13:09:13,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:13,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:13,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:13,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:13,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:14,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:14,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:15,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:16,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:16,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:17,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:18,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:18,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 13:09:18,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:09:18,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 13:09:18,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:18,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-13 13:09:18,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-13 13:09:18,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 13:09:18,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:18,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:18,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:18,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:18,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:18,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:18,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:18,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:09:18,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:18,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:18,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:18,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:18,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:18,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 13:09:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:18,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:18,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:18,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:09:18,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:18,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:09:18,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:18,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:18,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:18,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:18,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:09:18,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 13:09:18,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:18,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:18,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:18,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:19,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:19,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:09:19,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 13:09:19,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 445 [2020-10-13 13:09:19,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:19,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 13:09:19,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:19,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 13:09:19,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:19,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:09:19,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:19,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:19,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:19,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:19,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:20,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:20,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:09:20,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:09:20,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 442 [2020-10-13 13:09:20,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:20,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 13:09:20,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:09:20,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 13:09:20,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:20,923 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 228 proven. 220 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-13 13:09:20,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107261436] [2020-10-13 13:09:20,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:20,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-13 13:09:20,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361541256] [2020-10-13 13:09:20,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-13 13:09:20,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:20,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-13 13:09:20,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2020-10-13 13:09:20,925 INFO L87 Difference]: Start difference. First operand 85 states and 102 transitions. Second operand 38 states. [2020-10-13 13:09:24,845 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 54 [2020-10-13 13:09:26,534 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 49 [2020-10-13 13:09:29,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:29,937 INFO L93 Difference]: Finished difference Result 219 states and 294 transitions. [2020-10-13 13:09:29,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-10-13 13:09:29,938 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 110 [2020-10-13 13:09:29,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:29,942 INFO L225 Difference]: With dead ends: 219 [2020-10-13 13:09:29,943 INFO L226 Difference]: Without dead ends: 215 [2020-10-13 13:09:29,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2822 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=1100, Invalid=10030, Unknown=0, NotChecked=0, Total=11130 [2020-10-13 13:09:29,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-13 13:09:29,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 170. [2020-10-13 13:09:29,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-13 13:09:29,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 223 transitions. [2020-10-13 13:09:29,979 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 223 transitions. Word has length 110 [2020-10-13 13:09:29,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:29,979 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 223 transitions. [2020-10-13 13:09:29,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-13 13:09:29,980 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 223 transitions. [2020-10-13 13:09:29,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 13:09:29,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:29,984 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 13, 5, 5, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:09:29,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 13:09:29,984 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:29,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:29,984 INFO L82 PathProgramCache]: Analyzing trace with hash -897444716, now seen corresponding path program 2 times [2020-10-13 13:09:29,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:29,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2088974781] [2020-10-13 13:09:29,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:30,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:30,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:30,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:30,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:35,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:35,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 13:09:35,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 13:09:35,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 13:09:35,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:35,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-13 13:09:35,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 13:09:35,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 13:09:35,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:35,398 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2020-10-13 13:09:35,550 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-10-13 13:09:35,833 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2020-10-13 13:09:36,342 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2020-10-13 13:09:36,900 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 57 [2020-10-13 13:09:37,468 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2020-10-13 13:09:39,929 WARN L193 SmtUtils]: Spent 2.25 s on a formula simplification. DAG size of input: 86 DAG size of output: 59 [2020-10-13 13:09:40,140 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2020-10-13 13:09:40,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:40,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:40,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:40,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:40,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:40,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:09:40,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:40,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:40,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:40,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:40,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:40,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 13:09:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:40,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:40,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:41,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:41,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:09:41,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:41,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1009 [2020-10-13 13:09:41,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:41,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:09:41,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:41,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 13:09:41,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:09:42,387 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 26 [2020-10-13 13:09:42,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 13:09:42,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:42,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:42,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:42,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:42,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:09:42,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:42,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 514 [2020-10-13 13:09:42,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:42,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:09:42,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:42,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 13:09:42,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:43,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:09:43,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:43,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:43,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:43,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:43,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:09:43,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:43,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-13 13:09:43,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:43,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 13:09:43,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:43,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 13:09:43,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:09:44,804 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 157 proven. 198 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2020-10-13 13:09:44,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2088974781] [2020-10-13 13:09:44,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:44,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-13 13:09:44,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064071025] [2020-10-13 13:09:44,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-13 13:09:44,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:44,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-13 13:09:44,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2020-10-13 13:09:44,807 INFO L87 Difference]: Start difference. First operand 170 states and 223 transitions. Second operand 28 states. [2020-10-13 13:09:49,073 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 43 [2020-10-13 13:09:59,994 WARN L193 SmtUtils]: Spent 6.55 s on a formula simplification. DAG size of input: 105 DAG size of output: 70 [2020-10-13 13:10:00,394 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-13 13:10:05,949 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-10-13 13:10:06,204 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-10-13 13:10:06,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:06,207 INFO L93 Difference]: Finished difference Result 298 states and 444 transitions. [2020-10-13 13:10:06,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-13 13:10:06,208 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 110 [2020-10-13 13:10:06,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:06,211 INFO L225 Difference]: With dead ends: 298 [2020-10-13 13:10:06,211 INFO L226 Difference]: Without dead ends: 294 [2020-10-13 13:10:06,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 6 SyntacticMatches, 12 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 24.2s TimeCoverageRelationStatistics Valid=321, Invalid=2225, Unknown=4, NotChecked=0, Total=2550 [2020-10-13 13:10:06,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-10-13 13:10:06,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 261. [2020-10-13 13:10:06,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 13:10:06,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 401 transitions. [2020-10-13 13:10:06,254 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 401 transitions. Word has length 110 [2020-10-13 13:10:06,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:06,254 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 401 transitions. [2020-10-13 13:10:06,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-13 13:10:06,255 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 401 transitions. [2020-10-13 13:10:06,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 13:10:06,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:06,259 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 13, 5, 5, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:10:06,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 13:10:06,260 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:06,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:06,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1515534956, now seen corresponding path program 3 times [2020-10-13 13:10:06,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:06,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930843978] [2020-10-13 13:10:06,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:06,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:06,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:06,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:07,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:07,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:10,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:10,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:11,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:11,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 13:10:11,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:10:11,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 13:10:11,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:11,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-13 13:10:11,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-13 13:10:11,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 13:10:11,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:11,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:11,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:11,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:11,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:11,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:11,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:11,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:10:11,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:11,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:11,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:11,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:11,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:11,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 13:10:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:11,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:11,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:11,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:10:11,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:11,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:10:11,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:11,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:11,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:11,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:11,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:11,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 13:10:11,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:11,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:11,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:11,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:11,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:11,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:10:11,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 13:10:11,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-10-13 13:10:11,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:11,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 13:10:11,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:11,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 13:10:11,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:12,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:10:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:12,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:12,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:12,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:12,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:12,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:10:12,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 13:10:12,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-13 13:10:12,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:12,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 13:10:12,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:10:12,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 13:10:12,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:13,440 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 230 proven. 215 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-13 13:10:13,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930843978] [2020-10-13 13:10:13,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:13,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-13 13:10:13,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235653679] [2020-10-13 13:10:13,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-13 13:10:13,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:13,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-13 13:10:13,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1037, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 13:10:13,443 INFO L87 Difference]: Start difference. First operand 261 states and 401 transitions. Second operand 34 states. [2020-10-13 13:10:19,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:19,364 INFO L93 Difference]: Finished difference Result 384 states and 714 transitions. [2020-10-13 13:10:19,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-13 13:10:19,369 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 110 [2020-10-13 13:10:19,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:19,380 INFO L225 Difference]: With dead ends: 384 [2020-10-13 13:10:19,381 INFO L226 Difference]: Without dead ends: 380 [2020-10-13 13:10:19,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1174 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=412, Invalid=4844, Unknown=0, NotChecked=0, Total=5256 [2020-10-13 13:10:19,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2020-10-13 13:10:19,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 343. [2020-10-13 13:10:19,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-10-13 13:10:19,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 573 transitions. [2020-10-13 13:10:19,469 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 573 transitions. Word has length 110 [2020-10-13 13:10:19,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:19,472 INFO L479 AbstractCegarLoop]: Abstraction has 343 states and 573 transitions. [2020-10-13 13:10:19,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-13 13:10:19,472 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 573 transitions. [2020-10-13 13:10:19,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 13:10:19,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:19,481 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 12, 5, 5, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:10:19,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 13:10:19,481 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:19,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:19,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1908561966, now seen corresponding path program 4 times [2020-10-13 13:10:19,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:19,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745237822] [2020-10-13 13:10:19,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:19,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:19,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:19,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:20,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:20,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:20,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:21,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:22,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:24,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:24,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 13:10:24,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 13:10:24,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 13:10:24,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:24,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-13 13:10:24,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-13 13:10:24,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 13:10:24,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:24,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:24,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:24,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:24,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:24,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:24,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:24,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:10:24,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:24,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:24,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:24,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:24,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:24,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 13:10:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:24,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:24,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:24,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:10:24,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:24,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:10:24,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:24,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:24,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:24,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:24,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:24,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 13:10:24,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:24,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:24,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:24,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:25,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:25,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:10:25,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 13:10:25,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-13 13:10:25,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:25,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 13:10:25,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:25,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 13:10:25,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:25,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:10:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:25,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:25,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:25,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:25,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:25,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:10:25,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 13:10:25,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-13 13:10:25,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:25,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 13:10:25,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:10:25,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 13:10:25,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:26,175 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 238 proven. 200 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-13 13:10:26,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745237822] [2020-10-13 13:10:26,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:26,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-13 13:10:26,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331458877] [2020-10-13 13:10:26,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-13 13:10:26,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:26,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-13 13:10:26,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=673, Unknown=0, NotChecked=0, Total=756 [2020-10-13 13:10:26,176 INFO L87 Difference]: Start difference. First operand 343 states and 573 transitions. Second operand 28 states. [2020-10-13 13:10:32,172 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2020-10-13 13:10:32,364 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-13 13:10:34,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:34,621 INFO L93 Difference]: Finished difference Result 727 states and 1285 transitions. [2020-10-13 13:10:34,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2020-10-13 13:10:34,625 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 110 [2020-10-13 13:10:34,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:34,636 INFO L225 Difference]: With dead ends: 727 [2020-10-13 13:10:34,636 INFO L226 Difference]: Without dead ends: 723 [2020-10-13 13:10:34,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2274 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=1192, Invalid=7550, Unknown=0, NotChecked=0, Total=8742 [2020-10-13 13:10:34,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-10-13 13:10:34,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 639. [2020-10-13 13:10:34,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2020-10-13 13:10:34,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 1135 transitions. [2020-10-13 13:10:34,747 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 1135 transitions. Word has length 110 [2020-10-13 13:10:34,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:34,747 INFO L479 AbstractCegarLoop]: Abstraction has 639 states and 1135 transitions. [2020-10-13 13:10:34,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-13 13:10:34,748 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 1135 transitions. [2020-10-13 13:10:34,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 13:10:34,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:34,761 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 13, 5, 5, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:10:34,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 13:10:34,762 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:34,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:34,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1796404884, now seen corresponding path program 5 times [2020-10-13 13:10:34,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:34,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654661935] [2020-10-13 13:10:34,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:34,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:34,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:35,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:35,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:35,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:36,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:37,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:37,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:38,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:38,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:38,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:39,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:39,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 13:10:39,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 13:10:39,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 13:10:39,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:39,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-13 13:10:39,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-13 13:10:39,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 13:10:39,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:40,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:40,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:40,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:40,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:40,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:40,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:40,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:10:40,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:40,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:40,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:40,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:40,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:40,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 13:10:40,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:40,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:40,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:40,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:10:40,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:40,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:10:40,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:40,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:40,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:40,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:40,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:40,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 13:10:40,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:40,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:40,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:40,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:40,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:10:40,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:40,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-13 13:10:40,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:40,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 13:10:40,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:40,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 13:10:40,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:40,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:10:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:41,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:41,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:41,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:41,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:41,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:10:41,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 13:10:41,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-13 13:10:41,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:41,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 13:10:41,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:10:41,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 13:10:41,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:42,045 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 233 proven. 213 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-13 13:10:42,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654661935] [2020-10-13 13:10:42,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:42,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-13 13:10:42,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836791808] [2020-10-13 13:10:42,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-13 13:10:42,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:42,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-13 13:10:42,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1095, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 13:10:42,050 INFO L87 Difference]: Start difference. First operand 639 states and 1135 transitions. Second operand 35 states. [2020-10-13 13:10:45,974 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 47 [2020-10-13 13:10:46,540 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-10-13 13:10:49,118 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-10-13 13:10:49,295 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2020-10-13 13:10:52,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:52,090 INFO L93 Difference]: Finished difference Result 1037 states and 2227 transitions. [2020-10-13 13:10:52,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-10-13 13:10:52,091 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 110 [2020-10-13 13:10:52,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:52,105 INFO L225 Difference]: With dead ends: 1037 [2020-10-13 13:10:52,105 INFO L226 Difference]: Without dead ends: 1033 [2020-10-13 13:10:52,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 15 SyntacticMatches, 4 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3448 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=1284, Invalid=10926, Unknown=0, NotChecked=0, Total=12210 [2020-10-13 13:10:52,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2020-10-13 13:10:52,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 884. [2020-10-13 13:10:52,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 884 states. [2020-10-13 13:10:52,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1637 transitions. [2020-10-13 13:10:52,318 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1637 transitions. Word has length 110 [2020-10-13 13:10:52,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:52,319 INFO L479 AbstractCegarLoop]: Abstraction has 884 states and 1637 transitions. [2020-10-13 13:10:52,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-13 13:10:52,319 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1637 transitions. [2020-10-13 13:10:52,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 13:10:52,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:52,340 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 12, 5, 5, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:10:52,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 13:10:52,341 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:52,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:52,343 INFO L82 PathProgramCache]: Analyzing trace with hash 785287634, now seen corresponding path program 6 times [2020-10-13 13:10:52,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:52,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037268125] [2020-10-13 13:10:52,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:52,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:52,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:52,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:53,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:53,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:54,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:55,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:55,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:55,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:56,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:57,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:57,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 13:10:57,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 13:10:57,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 13:10:57,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:57,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-13 13:10:57,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-13 13:10:57,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 13:10:57,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:57,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:57,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:57,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:57,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:57,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:57,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:57,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:10:57,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:57,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:57,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:57,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:57,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:57,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 13:10:57,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:57,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:57,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:57,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:10:57,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:57,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:10:57,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:57,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:57,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:57,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:57,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:57,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 13:10:57,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:57,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:57,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:58,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:58,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:10:58,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:58,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-13 13:10:58,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:58,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:10:58,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:58,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 13:10:58,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:58,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:10:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:58,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:58,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:58,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:58,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:58,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:10:58,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 13:10:58,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 407 [2020-10-13 13:10:58,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:58,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 13:10:58,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:10:58,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 13:10:58,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:59,708 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 232 proven. 206 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-13 13:10:59,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037268125] [2020-10-13 13:10:59,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:59,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-13 13:10:59,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192887559] [2020-10-13 13:10:59,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-13 13:10:59,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:59,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-13 13:10:59,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=916, Unknown=0, NotChecked=0, Total=992 [2020-10-13 13:10:59,713 INFO L87 Difference]: Start difference. First operand 884 states and 1637 transitions. Second operand 32 states. [2020-10-13 13:11:04,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:11:04,467 INFO L93 Difference]: Finished difference Result 1115 states and 2303 transitions. [2020-10-13 13:11:04,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-13 13:11:04,469 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 110 [2020-10-13 13:11:04,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:11:04,484 INFO L225 Difference]: With dead ends: 1115 [2020-10-13 13:11:04,484 INFO L226 Difference]: Without dead ends: 1111 [2020-10-13 13:11:04,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 698 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=288, Invalid=3372, Unknown=0, NotChecked=0, Total=3660 [2020-10-13 13:11:04,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2020-10-13 13:11:04,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 1031. [2020-10-13 13:11:04,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1031 states. [2020-10-13 13:11:04,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 2076 transitions. [2020-10-13 13:11:04,678 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 2076 transitions. Word has length 110 [2020-10-13 13:11:04,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:11:04,678 INFO L479 AbstractCegarLoop]: Abstraction has 1031 states and 2076 transitions. [2020-10-13 13:11:04,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-13 13:11:04,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 2076 transitions. [2020-10-13 13:11:04,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 13:11:04,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:11:04,704 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 11, 5, 5, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:11:04,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 13:11:04,705 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:11:04,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:11:04,705 INFO L82 PathProgramCache]: Analyzing trace with hash 392260624, now seen corresponding path program 7 times [2020-10-13 13:11:04,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:11:04,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115429142] [2020-10-13 13:11:04,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:11:04,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:04,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:05,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:05,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:05,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:06,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:06,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:06,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:07,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:09,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:09,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 13:11:09,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 13:11:09,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 13:11:09,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:09,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-13 13:11:09,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-13 13:11:09,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 13:11:09,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:10,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:11:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:10,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:10,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:10,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:11:10,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:11:10,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:11:10,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:10,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:10,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:10,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:10,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:10,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 13:11:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:10,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:10,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:10,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:11:10,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:11:10,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:11:10,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:10,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:10,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:10,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:10,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:10,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 13:11:10,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:10,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:10,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:10,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:10,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:10,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:10,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:11:10,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:11:10,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-13 13:11:10,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:10,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 13:11:10,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:10,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 13:11:10,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:11,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:11:11,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:11,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:11,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:11,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:11,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:11,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:11:11,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 13:11:11,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-13 13:11:11,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:11,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:11:11,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:11:11,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 13:11:11,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:12,556 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 277 proven. 160 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 13:11:12,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115429142] [2020-10-13 13:11:12,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:11:12,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-13 13:11:12,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651486559] [2020-10-13 13:11:12,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-13 13:11:12,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:11:12,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-13 13:11:12,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=849, Unknown=0, NotChecked=0, Total=992 [2020-10-13 13:11:12,559 INFO L87 Difference]: Start difference. First operand 1031 states and 2076 transitions. Second operand 32 states. [2020-10-13 13:11:13,467 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2020-10-13 13:11:13,789 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 50 [2020-10-13 13:11:13,969 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 41 [2020-10-13 13:11:14,410 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 64 [2020-10-13 13:11:14,661 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 53 [2020-10-13 13:11:14,931 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 48 [2020-10-13 13:11:15,191 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 50 [2020-10-13 13:11:15,352 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2020-10-13 13:11:15,526 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2020-10-13 13:11:15,704 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 45 [2020-10-13 13:11:15,884 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-10-13 13:11:16,250 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2020-10-13 13:11:16,448 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-13 13:11:16,615 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-10-13 13:11:16,862 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2020-10-13 13:11:17,144 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2020-10-13 13:11:17,389 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-13 13:11:17,640 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-13 13:11:17,857 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-10-13 13:11:18,136 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2020-10-13 13:11:18,456 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-10-13 13:11:18,712 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 48 [2020-10-13 13:11:18,882 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-10-13 13:11:19,072 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-10-13 13:11:19,311 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2020-10-13 13:11:19,527 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-13 13:11:19,821 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2020-10-13 13:11:20,043 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-10-13 13:11:20,397 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 67 [2020-10-13 13:11:20,684 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 58 [2020-10-13 13:11:20,996 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-10-13 13:11:21,242 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-13 13:11:21,442 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-10-13 13:11:21,800 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-13 13:11:22,087 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-10-13 13:11:22,440 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2020-10-13 13:11:22,856 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2020-10-13 13:11:23,121 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2020-10-13 13:11:23,414 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 54 [2020-10-13 13:11:23,702 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2020-10-13 13:11:24,942 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 51 [2020-10-13 13:11:25,288 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 49 [2020-10-13 13:11:25,502 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 47 [2020-10-13 13:11:25,675 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2020-10-13 13:11:25,976 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 54 [2020-10-13 13:11:26,239 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 52 [2020-10-13 13:11:26,504 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 47 [2020-10-13 13:11:26,752 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 49 [2020-10-13 13:11:27,088 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2020-10-13 13:11:27,277 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 43 [2020-10-13 13:11:27,462 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-10-13 13:11:27,829 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-10-13 13:11:28,002 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-10-13 13:11:28,265 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-13 13:11:28,473 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2020-10-13 13:11:28,713 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2020-10-13 13:11:28,885 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2020-10-13 13:11:29,074 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2020-10-13 13:11:29,606 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 46 [2020-10-13 13:11:29,895 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 52 [2020-10-13 13:11:30,257 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 57 [2020-10-13 13:11:30,581 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 55 [2020-10-13 13:11:30,796 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-10-13 13:11:31,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:11:31,741 INFO L93 Difference]: Finished difference Result 2601 states and 6323 transitions. [2020-10-13 13:11:31,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2020-10-13 13:11:31,743 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 110 [2020-10-13 13:11:31,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:11:31,788 INFO L225 Difference]: With dead ends: 2601 [2020-10-13 13:11:31,789 INFO L226 Difference]: Without dead ends: 2597 [2020-10-13 13:11:31,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5401 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=2531, Invalid=13725, Unknown=0, NotChecked=0, Total=16256 [2020-10-13 13:11:31,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2597 states. [2020-10-13 13:11:32,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2597 to 2266. [2020-10-13 13:11:32,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2266 states. [2020-10-13 13:11:32,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2266 states to 2266 states and 5260 transitions. [2020-10-13 13:11:32,377 INFO L78 Accepts]: Start accepts. Automaton has 2266 states and 5260 transitions. Word has length 110 [2020-10-13 13:11:32,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:11:32,378 INFO L479 AbstractCegarLoop]: Abstraction has 2266 states and 5260 transitions. [2020-10-13 13:11:32,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-13 13:11:32,378 INFO L276 IsEmpty]: Start isEmpty. Operand 2266 states and 5260 transitions. [2020-10-13 13:11:32,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 13:11:32,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:11:32,431 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 11, 5, 5, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:11:32,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 13:11:32,431 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:11:32,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:11:32,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1004142352, now seen corresponding path program 8 times [2020-10-13 13:11:32,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:11:32,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284377241] [2020-10-13 13:11:32,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:11:32,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:32,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:33,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:33,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:33,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:33,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:34,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:35,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:35,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:35,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:36,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:36,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:37,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:37,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 13:11:37,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 13:11:37,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 13:11:37,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:37,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-13 13:11:37,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-13 13:11:37,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 13:11:37,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:37,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:11:37,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:37,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:37,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:37,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:11:37,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:11:37,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:11:37,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:37,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:37,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:37,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:37,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:37,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 13:11:37,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:37,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:37,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:37,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:11:37,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:11:37,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:11:37,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:37,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:37,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:37,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:37,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:37,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 13:11:37,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:37,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:37,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:37,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:37,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:11:37,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:37,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 13:11:37,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:37,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:11:37,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:37,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 13:11:37,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0