/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/eca-rers2012/Problem17_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:28:22,413 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:28:22,416 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:28:22,461 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:28:22,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:28:22,469 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:28:22,471 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:28:22,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:28:22,479 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:28:22,482 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:28:22,483 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:28:22,484 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:28:22,484 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:28:22,488 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:28:22,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:28:22,492 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:28:22,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:28:22,495 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:28:22,496 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:28:22,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:28:22,507 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:28:22,508 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:28:22,509 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:28:22,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:28:22,523 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:28:22,524 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:28:22,528 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:28:22,529 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:28:22,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:28:22,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:28:22,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:28:22,535 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:28:22,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:28:22,536 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:28:22,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:28:22,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:28:22,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:28:22,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:28:22,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:28:22,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:28:22,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:28:22,543 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 09:28:22,584 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:28:22,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:28:22,587 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:28:22,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:28:22,588 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:28:22,588 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:28:22,588 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:28:22,588 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:28:22,589 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:28:22,589 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:28:22,590 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:28:22,590 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:28:22,590 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:28:22,591 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:28:22,591 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:28:22,591 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:28:22,591 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:28:22,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:28:22,592 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:28:22,592 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:28:22,592 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:28:22,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:28:22,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:28:22,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:28:22,593 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:28:22,593 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:28:22,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:28:22,594 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:28:22,594 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:28:22,594 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 09:28:22,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:28:22,959 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:28:22,963 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:28:22,965 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:28:22,965 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:28:22,966 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label11.c [2020-10-13 09:28:23,032 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d5157044/910ae57c4f5b4ba3a14d4a78a1c66a93/FLAGfa35828c3 [2020-10-13 09:28:23,816 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:28:23,817 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label11.c [2020-10-13 09:28:23,848 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d5157044/910ae57c4f5b4ba3a14d4a78a1c66a93/FLAGfa35828c3 [2020-10-13 09:28:24,353 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d5157044/910ae57c4f5b4ba3a14d4a78a1c66a93 [2020-10-13 09:28:24,364 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:28:24,366 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:28:24,367 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:28:24,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:28:24,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:28:24,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:28:24" (1/1) ... [2020-10-13 09:28:24,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f08780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:28:24, skipping insertion in model container [2020-10-13 09:28:24,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:28:24" (1/1) ... [2020-10-13 09:28:24,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:28:24,494 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:28:25,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:28:25,752 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:28:26,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:28:26,211 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:28:26,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:28:26 WrapperNode [2020-10-13 09:28:26,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:28:26,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:28:26,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:28:26,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:28:26,231 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:28:26" (1/1) ... [2020-10-13 09:28:26,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:28:26" (1/1) ... [2020-10-13 09:28:26,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:28:26" (1/1) ... [2020-10-13 09:28:26,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:28:26" (1/1) ... [2020-10-13 09:28:26,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:28:26" (1/1) ... [2020-10-13 09:28:26,457 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:28:26" (1/1) ... [2020-10-13 09:28:26,499 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:28:26" (1/1) ... [2020-10-13 09:28:26,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:28:26,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:28:26,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:28:26,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:28:26,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:28:26" (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 09:28:26,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:28:26,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:28:26,600 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:28:26,600 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:28:26,600 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:28:26,600 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:28:26,600 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:28:26,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:28:26,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:28:26,601 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:28:26,601 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:28:26,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:28:26,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:28:35,609 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:28:35,610 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:28:35,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:28:35 BoogieIcfgContainer [2020-10-13 09:28:35,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:28:35,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:28:35,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:28:35,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:28:35,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:28:24" (1/3) ... [2020-10-13 09:28:35,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19011cf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:28:35, skipping insertion in model container [2020-10-13 09:28:35,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:28:26" (2/3) ... [2020-10-13 09:28:35,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19011cf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:28:35, skipping insertion in model container [2020-10-13 09:28:35,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:28:35" (3/3) ... [2020-10-13 09:28:35,641 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label11.c [2020-10-13 09:28:35,654 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:28:35,669 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:28:35,688 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:28:35,732 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:28:35,732 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:28:35,732 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:28:35,732 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:28:35,733 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:28:35,733 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:28:35,733 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:28:35,733 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:28:35,768 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-13 09:28:35,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 09:28:35,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:28:35,785 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:28:35,785 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:28:35,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:28:35,793 INFO L82 PathProgramCache]: Analyzing trace with hash 2087948217, now seen corresponding path program 1 times [2020-10-13 09:28:35,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:28:35,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394227521] [2020-10-13 09:28:35,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:28:36,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:36,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:36,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:36,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:28:36,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:28:36,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 441 [2020-10-13 09:28:36,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:36,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:28:36,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:28:36,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:28:36,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:28:36,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:28:36,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:36,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:36,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:36,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:28:36,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:28:36,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 09:28:36,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:36,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:28:36,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:28:36,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:28:36,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:28:36,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:28:36,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394227521] [2020-10-13 09:28:36,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:28:36,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:28:36,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626872556] [2020-10-13 09:28:36,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:28:36,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:28:36,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:28:36,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:28:36,777 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-13 09:28:49,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:28:49,552 INFO L93 Difference]: Finished difference Result 1693 states and 3093 transitions. [2020-10-13 09:28:49,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:28:49,555 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-10-13 09:28:49,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:28:49,586 INFO L225 Difference]: With dead ends: 1693 [2020-10-13 09:28:49,586 INFO L226 Difference]: Without dead ends: 1011 [2020-10-13 09:28:49,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:28:49,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2020-10-13 09:28:49,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 986. [2020-10-13 09:28:49,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 986 states. [2020-10-13 09:28:49,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1578 transitions. [2020-10-13 09:28:49,719 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1578 transitions. Word has length 62 [2020-10-13 09:28:49,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:28:49,720 INFO L479 AbstractCegarLoop]: Abstraction has 986 states and 1578 transitions. [2020-10-13 09:28:49,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:28:49,720 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1578 transitions. [2020-10-13 09:28:49,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-13 09:28:49,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:28:49,728 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 09:28:49,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:28:49,728 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:28:49,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:28:49,729 INFO L82 PathProgramCache]: Analyzing trace with hash -279306104, now seen corresponding path program 1 times [2020-10-13 09:28:49,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:28:49,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319592533] [2020-10-13 09:28:49,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:28:49,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:49,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:50,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:51,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:51,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 09:28:51,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:28:51,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1502 [2020-10-13 09:28:51,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:51,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:28:51,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 09:28:51,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 09:28:51,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:28:51,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:28:51,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:51,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:51,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:51,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:28:51,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:28:51,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 09:28:51,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:51,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:28:51,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:28:51,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:28:51,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:28:51,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:28:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:51,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:51,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:51,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:28:51,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:28:51,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-13 09:28:51,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:51,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:28:51,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:28:51,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:28:51,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:28:51,721 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:28:51,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319592533] [2020-10-13 09:28:51,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:28:51,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:28:51,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964773468] [2020-10-13 09:28:51,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:28:51,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:28:51,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:28:51,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:28:51,727 INFO L87 Difference]: Start difference. First operand 986 states and 1578 transitions. Second operand 6 states. [2020-10-13 09:29:07,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:29:07,439 INFO L93 Difference]: Finished difference Result 2427 states and 4006 transitions. [2020-10-13 09:29:07,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:29:07,440 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2020-10-13 09:29:07,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:29:07,455 INFO L225 Difference]: With dead ends: 2427 [2020-10-13 09:29:07,455 INFO L226 Difference]: Without dead ends: 1888 [2020-10-13 09:29:07,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:29:07,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2020-10-13 09:29:07,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1876. [2020-10-13 09:29:07,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1876 states. [2020-10-13 09:29:07,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1876 states to 1876 states and 3008 transitions. [2020-10-13 09:29:07,535 INFO L78 Accepts]: Start accepts. Automaton has 1876 states and 3008 transitions. Word has length 131 [2020-10-13 09:29:07,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:29:07,537 INFO L479 AbstractCegarLoop]: Abstraction has 1876 states and 3008 transitions. [2020-10-13 09:29:07,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:29:07,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1876 states and 3008 transitions. [2020-10-13 09:29:07,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-13 09:29:07,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:29:07,542 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 09:29:07,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:29:07,542 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:29:07,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:29:07,543 INFO L82 PathProgramCache]: Analyzing trace with hash -111436400, now seen corresponding path program 1 times [2020-10-13 09:29:07,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:29:07,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375342063] [2020-10-13 09:29:07,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:29:07,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:07,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:07,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:08,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:12,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:12,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-13 09:29:12,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:29:12,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-13 09:29:12,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:12,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 09:29:12,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 09:29:12,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 09:29:12,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:29:13,493 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 34 [2020-10-13 09:29:13,648 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2020-10-13 09:29:13,792 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2020-10-13 09:29:13,956 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2020-10-13 09:29:14,121 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-10-13 09:29:14,318 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 37 [2020-10-13 09:29:14,517 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2020-10-13 09:29:14,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:29:14,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:14,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:14,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:14,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:29:14,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:14,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:29:14,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:14,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:29:14,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:29:14,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:29:14,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:29:15,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:29:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:15,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:15,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:15,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:29:15,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:15,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 09:29:15,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:15,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:29:15,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:29:15,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 09:29:15,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:29:15,288 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:29:15,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375342063] [2020-10-13 09:29:15,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:29:15,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 09:29:15,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207229240] [2020-10-13 09:29:15,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 09:29:15,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:29:15,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 09:29:15,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=222, Unknown=0, NotChecked=0, Total=380 [2020-10-13 09:29:15,292 INFO L87 Difference]: Start difference. First operand 1876 states and 3008 transitions. Second operand 20 states. [2020-10-13 09:29:32,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:29:32,036 INFO L93 Difference]: Finished difference Result 4151 states and 6519 transitions. [2020-10-13 09:29:32,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 09:29:32,038 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 136 [2020-10-13 09:29:32,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:29:32,056 INFO L225 Difference]: With dead ends: 4151 [2020-10-13 09:29:32,057 INFO L226 Difference]: Without dead ends: 1888 [2020-10-13 09:29:32,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=478, Invalid=782, Unknown=0, NotChecked=0, Total=1260 [2020-10-13 09:29:32,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2020-10-13 09:29:32,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1876. [2020-10-13 09:29:32,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1876 states. [2020-10-13 09:29:32,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1876 states to 1876 states and 2716 transitions. [2020-10-13 09:29:32,169 INFO L78 Accepts]: Start accepts. Automaton has 1876 states and 2716 transitions. Word has length 136 [2020-10-13 09:29:32,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:29:32,169 INFO L479 AbstractCegarLoop]: Abstraction has 1876 states and 2716 transitions. [2020-10-13 09:29:32,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 09:29:32,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1876 states and 2716 transitions. [2020-10-13 09:29:32,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-13 09:29:32,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:29:32,182 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 09:29:32,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:29:32,187 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:29:32,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:29:32,190 INFO L82 PathProgramCache]: Analyzing trace with hash 185268364, now seen corresponding path program 1 times [2020-10-13 09:29:32,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:29:32,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447476716] [2020-10-13 09:29:32,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:29:32,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:32,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:32,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:32,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 09:29:32,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:32,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 539 [2020-10-13 09:29:32,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:32,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:29:32,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:29:32,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 09:29:32,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:29:32,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:29:32,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:32,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:32,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:32,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:29:32,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:32,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 09:29:32,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:32,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:29:32,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:29:32,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:29:32,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:29:32,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:29:32,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:32,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:33,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:33,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:29:33,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:33,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-13 09:29:33,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:33,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:29:33,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:29:33,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 09:29:33,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:29:33,176 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:29:33,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447476716] [2020-10-13 09:29:33,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:29:33,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 09:29:33,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355875122] [2020-10-13 09:29:33,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:29:33,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:29:33,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:29:33,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:29:33,182 INFO L87 Difference]: Start difference. First operand 1876 states and 2716 transitions. Second operand 7 states. [2020-10-13 09:29:44,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:29:44,114 INFO L93 Difference]: Finished difference Result 3775 states and 5623 transitions. [2020-10-13 09:29:44,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:29:44,116 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 138 [2020-10-13 09:29:44,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:29:44,129 INFO L225 Difference]: With dead ends: 3775 [2020-10-13 09:29:44,129 INFO L226 Difference]: Without dead ends: 1905 [2020-10-13 09:29:44,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:29:44,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1905 states. [2020-10-13 09:29:44,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1905 to 1877. [2020-10-13 09:29:44,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1877 states. [2020-10-13 09:29:44,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1877 states to 1877 states and 2477 transitions. [2020-10-13 09:29:44,208 INFO L78 Accepts]: Start accepts. Automaton has 1877 states and 2477 transitions. Word has length 138 [2020-10-13 09:29:44,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:29:44,208 INFO L479 AbstractCegarLoop]: Abstraction has 1877 states and 2477 transitions. [2020-10-13 09:29:44,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:29:44,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1877 states and 2477 transitions. [2020-10-13 09:29:44,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-13 09:29:44,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:29:44,213 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:29:44,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:29:44,214 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:29:44,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:29:44,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1881077511, now seen corresponding path program 1 times [2020-10-13 09:29:44,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:29:44,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665034445] [2020-10-13 09:29:44,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:29:44,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:44,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:44,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:44,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-13 09:29:44,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:44,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 561 [2020-10-13 09:29:44,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:44,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:29:44,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-13 09:29:44,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:29:44,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:29:44,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:29:44,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:44,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:44,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:44,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:29:44,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:44,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:29:44,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:44,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:29:44,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:29:44,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:29:44,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:29:44,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:29:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:45,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:45,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:45,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:29:45,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:45,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-13 09:29:45,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:45,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:29:45,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:29:45,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 09:29:45,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:29:45,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:29:45,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:45,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:45,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:45,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:29:45,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:45,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-13 09:29:45,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:45,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:29:45,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:29:45,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 09:29:45,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-13 09:29:45,572 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:29:45,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665034445] [2020-10-13 09:29:45,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:29:45,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:29:45,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408129927] [2020-10-13 09:29:45,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:29:45,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:29:45,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:29:45,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:29:45,582 INFO L87 Difference]: Start difference. First operand 1877 states and 2477 transitions. Second operand 7 states. [2020-10-13 09:30:02,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:30:02,801 INFO L93 Difference]: Finished difference Result 4286 states and 5810 transitions. [2020-10-13 09:30:02,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:30:02,802 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 220 [2020-10-13 09:30:02,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:30:02,812 INFO L225 Difference]: With dead ends: 4286 [2020-10-13 09:30:02,812 INFO L226 Difference]: Without dead ends: 2403 [2020-10-13 09:30:02,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:30:02,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2403 states. [2020-10-13 09:30:02,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2403 to 2363. [2020-10-13 09:30:02,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2363 states. [2020-10-13 09:30:02,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 3066 transitions. [2020-10-13 09:30:02,881 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 3066 transitions. Word has length 220 [2020-10-13 09:30:02,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:30:02,882 INFO L479 AbstractCegarLoop]: Abstraction has 2363 states and 3066 transitions. [2020-10-13 09:30:02,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:30:02,882 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 3066 transitions. [2020-10-13 09:30:02,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-13 09:30:02,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:30:02,886 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:30:02,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:30:02,887 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:30:02,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:30:02,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1000213135, now seen corresponding path program 1 times [2020-10-13 09:30:02,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:30:02,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139534415] [2020-10-13 09:30:02,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:30:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:02,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:03,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:03,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:07,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:07,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-13 09:30:07,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:30:07,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4312 [2020-10-13 09:30:07,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:07,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:30:07,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-13 09:30:07,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:30:07,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:30:07,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:30:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:07,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:07,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:07,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:30:07,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:07,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:30:07,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:07,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:30:07,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:30:07,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:30:07,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:30:07,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:30:07,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:07,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:07,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:07,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:30:07,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:07,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:30:07,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:07,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:30:07,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:30:07,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:30:07,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:30:07,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:30:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:07,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:07,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:07,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 09:30:07,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:07,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 09:30:07,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:07,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:30:07,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:30:07,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:30:07,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:30:07,740 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-13 09:30:07,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139534415] [2020-10-13 09:30:07,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:30:07,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:30:07,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954327638] [2020-10-13 09:30:07,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:30:07,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:30:07,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:30:07,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:30:07,743 INFO L87 Difference]: Start difference. First operand 2363 states and 3066 transitions. Second operand 5 states. [2020-10-13 09:30:17,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:30:17,984 INFO L93 Difference]: Finished difference Result 4308 states and 5714 transitions. [2020-10-13 09:30:17,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:30:17,989 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 224 [2020-10-13 09:30:17,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:30:18,000 INFO L225 Difference]: With dead ends: 4308 [2020-10-13 09:30:18,001 INFO L226 Difference]: Without dead ends: 2368 [2020-10-13 09:30:18,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:30:18,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2368 states. [2020-10-13 09:30:18,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2368 to 2363. [2020-10-13 09:30:18,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2363 states. [2020-10-13 09:30:18,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 3063 transitions. [2020-10-13 09:30:18,072 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 3063 transitions. Word has length 224 [2020-10-13 09:30:18,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:30:18,072 INFO L479 AbstractCegarLoop]: Abstraction has 2363 states and 3063 transitions. [2020-10-13 09:30:18,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:30:18,073 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 3063 transitions. [2020-10-13 09:30:18,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-13 09:30:18,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:30:18,076 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:30:18,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:30:18,077 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:30:18,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:30:18,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1100866025, now seen corresponding path program 1 times [2020-10-13 09:30:18,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:30:18,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999377533] [2020-10-13 09:30:18,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:30:18,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:18,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:18,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:18,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:19,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:19,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:30:19,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:30:19,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1558 [2020-10-13 09:30:19,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:19,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:30:19,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-13 09:30:19,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 09:30:19,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:30:19,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:30:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:19,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:19,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:19,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:30:19,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:19,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:30:19,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:19,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:30:19,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:30:19,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:30:19,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:30:19,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:30:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:19,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:19,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:19,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:30:19,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:19,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 09:30:19,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:19,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:30:19,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:30:19,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:30:19,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:30:19,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:30:19,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:19,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:20,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:20,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:30:20,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:20,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-13 09:30:20,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:20,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:30:20,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:30:20,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:30:20,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:30:20,294 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-13 09:30:20,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999377533] [2020-10-13 09:30:20,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:30:20,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:30:20,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897330376] [2020-10-13 09:30:20,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:30:20,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:30:20,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:30:20,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:30:20,300 INFO L87 Difference]: Start difference. First operand 2363 states and 3063 transitions. Second operand 5 states. [2020-10-13 09:30:29,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:30:29,598 INFO L93 Difference]: Finished difference Result 4339 states and 5739 transitions. [2020-10-13 09:30:29,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:30:29,602 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 228 [2020-10-13 09:30:29,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:30:29,612 INFO L225 Difference]: With dead ends: 4339 [2020-10-13 09:30:29,612 INFO L226 Difference]: Without dead ends: 2368 [2020-10-13 09:30:29,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:30:29,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2368 states. [2020-10-13 09:30:29,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2368 to 2363. [2020-10-13 09:30:29,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2363 states. [2020-10-13 09:30:29,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 3060 transitions. [2020-10-13 09:30:29,681 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 3060 transitions. Word has length 228 [2020-10-13 09:30:29,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:30:29,682 INFO L479 AbstractCegarLoop]: Abstraction has 2363 states and 3060 transitions. [2020-10-13 09:30:29,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:30:29,682 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 3060 transitions. [2020-10-13 09:30:29,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-13 09:30:29,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:30:29,686 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:30:29,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:30:29,687 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:30:29,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:30:29,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1806079972, now seen corresponding path program 1 times [2020-10-13 09:30:29,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:30:29,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656131686] [2020-10-13 09:30:29,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:30:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:29,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:29,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:30,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:34,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:34,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-13 09:30:34,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:30:34,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 09:30:34,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:34,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:30:34,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-13 09:30:34,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 09:30:34,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:30:34,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:30:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:34,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:34,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:34,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:30:34,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:34,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:30:34,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:34,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:30:34,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:30:34,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:30:34,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:30:34,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:30:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:34,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:35,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:35,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:30:35,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:35,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 09:30:35,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:35,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:30:35,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:30:35,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:30:35,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:30:35,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:30:35,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:35,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:35,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:35,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 09:30:35,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:35,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 09:30:35,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:35,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:30:35,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:30:35,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 09:30:35,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:30:35,245 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-13 09:30:35,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656131686] [2020-10-13 09:30:35,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:30:35,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:30:35,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854821402] [2020-10-13 09:30:35,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:30:35,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:30:35,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:30:35,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:30:35,249 INFO L87 Difference]: Start difference. First operand 2363 states and 3060 transitions. Second operand 5 states. [2020-10-13 09:30:51,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:30:51,562 INFO L93 Difference]: Finished difference Result 5644 states and 7649 transitions. [2020-10-13 09:30:51,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:30:51,565 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 235 [2020-10-13 09:30:51,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:30:51,584 INFO L225 Difference]: With dead ends: 5644 [2020-10-13 09:30:51,584 INFO L226 Difference]: Without dead ends: 3720 [2020-10-13 09:30:51,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:30:51,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3720 states. [2020-10-13 09:30:51,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3720 to 3276. [2020-10-13 09:30:51,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3276 states. [2020-10-13 09:30:51,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3276 states to 3276 states and 4215 transitions. [2020-10-13 09:30:51,680 INFO L78 Accepts]: Start accepts. Automaton has 3276 states and 4215 transitions. Word has length 235 [2020-10-13 09:30:51,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:30:51,680 INFO L479 AbstractCegarLoop]: Abstraction has 3276 states and 4215 transitions. [2020-10-13 09:30:51,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:30:51,681 INFO L276 IsEmpty]: Start isEmpty. Operand 3276 states and 4215 transitions. [2020-10-13 09:30:51,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-13 09:30:51,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:30:51,685 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:30:51,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:30:51,686 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:30:51,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:30:51,686 INFO L82 PathProgramCache]: Analyzing trace with hash -52543632, now seen corresponding path program 1 times [2020-10-13 09:30:51,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:30:51,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962065625] [2020-10-13 09:30:51,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:30:51,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:51,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:52,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:53,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:53,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-13 09:30:53,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:30:53,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1391 [2020-10-13 09:30:53,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:53,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:30:53,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 191 [2020-10-13 09:30:53,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 09:30:53,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:30:53,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:30:53,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:53,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:53,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:53,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:30:53,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:53,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:30:53,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:53,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:30:53,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:30:53,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:30:53,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:30:53,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:30:53,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:53,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:53,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:53,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:30:53,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:53,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 09:30:53,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:53,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:30:53,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:30:53,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:30:53,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:30:53,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:30:53,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:53,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:53,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:53,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 09:30:53,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:53,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-13 09:30:53,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:53,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:30:53,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:30:53,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 09:30:53,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:30:53,626 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 09:30:53,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962065625] [2020-10-13 09:30:53,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:30:53,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:30:53,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180743986] [2020-10-13 09:30:53,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:30:53,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:30:53,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:30:53,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:30:53,630 INFO L87 Difference]: Start difference. First operand 3276 states and 4215 transitions. Second operand 5 states. [2020-10-13 09:31:08,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:31:08,533 INFO L93 Difference]: Finished difference Result 8407 states and 11056 transitions. [2020-10-13 09:31:08,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:31:08,536 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 241 [2020-10-13 09:31:08,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:31:08,555 INFO L225 Difference]: With dead ends: 8407 [2020-10-13 09:31:08,556 INFO L226 Difference]: Without dead ends: 5570 [2020-10-13 09:31:08,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:31:08,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5570 states. [2020-10-13 09:31:08,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5570 to 5104. [2020-10-13 09:31:08,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5104 states. [2020-10-13 09:31:08,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5104 states to 5104 states and 6675 transitions. [2020-10-13 09:31:08,688 INFO L78 Accepts]: Start accepts. Automaton has 5104 states and 6675 transitions. Word has length 241 [2020-10-13 09:31:08,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:31:08,689 INFO L479 AbstractCegarLoop]: Abstraction has 5104 states and 6675 transitions. [2020-10-13 09:31:08,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:31:08,690 INFO L276 IsEmpty]: Start isEmpty. Operand 5104 states and 6675 transitions. [2020-10-13 09:31:08,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-13 09:31:08,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:31:08,700 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:31:08,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:31:08,701 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:31:08,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:31:08,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1770719671, now seen corresponding path program 1 times [2020-10-13 09:31:08,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:31:08,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197995305] [2020-10-13 09:31:08,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:31:08,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:08,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:08,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:10,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:10,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:11,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:13,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:13,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-13 09:31:13,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:31:13,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 09:31:13,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:13,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 09:31:13,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 265 [2020-10-13 09:31:13,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 09:31:13,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:31:13,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:31:13,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:13,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:13,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:13,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:31:13,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:13,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:31:13,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:13,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:31:13,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:31:13,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:31:13,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:31:13,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:31:13,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:13,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:14,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:14,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:31:14,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:14,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 09:31:14,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:14,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:31:14,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:31:14,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:31:14,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:31:14,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:31:14,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:14,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:14,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:14,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:31:14,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:14,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 09:31:14,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:14,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:31:14,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:31:14,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:31:14,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:31:14,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-13 09:31:14,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:14,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:14,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:14,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 09:31:14,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:14,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-13 09:31:14,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:14,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 09:31:14,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:31:14,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 09:31:14,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:31:14,769 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 168 proven. 3 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2020-10-13 09:31:14,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197995305] [2020-10-13 09:31:14,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:31:14,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:31:14,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065010935] [2020-10-13 09:31:14,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:31:14,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:31:14,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:31:14,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:31:14,774 INFO L87 Difference]: Start difference. First operand 5104 states and 6675 transitions. Second operand 6 states. [2020-10-13 09:31:31,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:31:31,443 INFO L93 Difference]: Finished difference Result 11122 states and 14874 transitions. [2020-10-13 09:31:31,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:31:31,446 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 315 [2020-10-13 09:31:31,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:31:31,472 INFO L225 Difference]: With dead ends: 11122 [2020-10-13 09:31:31,472 INFO L226 Difference]: Without dead ends: 6422 [2020-10-13 09:31:31,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:31:31,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6422 states. [2020-10-13 09:31:31,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6422 to 5553. [2020-10-13 09:31:31,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5553 states. [2020-10-13 09:31:31,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5553 states to 5553 states and 7182 transitions. [2020-10-13 09:31:31,594 INFO L78 Accepts]: Start accepts. Automaton has 5553 states and 7182 transitions. Word has length 315 [2020-10-13 09:31:31,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:31:31,594 INFO L479 AbstractCegarLoop]: Abstraction has 5553 states and 7182 transitions. [2020-10-13 09:31:31,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:31:31,595 INFO L276 IsEmpty]: Start isEmpty. Operand 5553 states and 7182 transitions. [2020-10-13 09:31:31,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-13 09:31:31,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:31:31,603 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:31:31,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:31:31,604 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:31:31,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:31:31,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1343307396, now seen corresponding path program 1 times [2020-10-13 09:31:31,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:31:31,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773868340] [2020-10-13 09:31:31,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:31:31,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:31,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:31,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:32,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:34,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:34,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-10-13 09:31:34,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:31:34,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2427 [2020-10-13 09:31:34,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:34,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:31:34,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 199 [2020-10-13 09:31:34,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:31:34,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:31:34,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:31:34,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:34,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:34,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:34,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:31:34,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:34,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:31:34,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:34,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:31:34,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:31:34,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:31:34,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:31:34,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:31:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:34,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:34,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:34,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:31:34,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:34,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:31:34,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:34,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:31:34,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:31:34,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:31:34,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:31:34,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:31:34,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:34,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:34,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:34,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 09:31:34,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:34,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-13 09:31:34,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:34,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:31:34,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:31:34,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 09:31:34,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:31:34,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-13 09:31:34,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:34,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:34,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:34,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:31:34,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:34,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-13 09:31:34,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:34,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:31:34,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:31:34,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 09:31:34,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:31:34,820 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 306 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-13 09:31:34,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773868340] [2020-10-13 09:31:34,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:31:34,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:31:34,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838708560] [2020-10-13 09:31:34,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:31:34,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:31:34,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:31:34,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:31:34,823 INFO L87 Difference]: Start difference. First operand 5553 states and 7182 transitions. Second operand 7 states. [2020-10-13 09:31:52,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:31:52,390 INFO L93 Difference]: Finished difference Result 14937 states and 20167 transitions. [2020-10-13 09:31:52,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:31:52,397 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 320 [2020-10-13 09:31:52,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:31:52,436 INFO L225 Difference]: With dead ends: 14937 [2020-10-13 09:31:52,437 INFO L226 Difference]: Without dead ends: 9361 [2020-10-13 09:31:52,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:31:52,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9361 states. [2020-10-13 09:31:52,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9361 to 8415. [2020-10-13 09:31:52,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8415 states. [2020-10-13 09:31:52,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8415 states to 8415 states and 11077 transitions. [2020-10-13 09:31:52,668 INFO L78 Accepts]: Start accepts. Automaton has 8415 states and 11077 transitions. Word has length 320 [2020-10-13 09:31:52,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:31:52,669 INFO L479 AbstractCegarLoop]: Abstraction has 8415 states and 11077 transitions. [2020-10-13 09:31:52,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:31:52,669 INFO L276 IsEmpty]: Start isEmpty. Operand 8415 states and 11077 transitions. [2020-10-13 09:31:52,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-13 09:31:52,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:31:52,684 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:31:52,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:31:52,685 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:31:52,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:31:52,686 INFO L82 PathProgramCache]: Analyzing trace with hash -757663220, now seen corresponding path program 1 times [2020-10-13 09:31:52,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:31:52,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867148521] [2020-10-13 09:31:52,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:31:52,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:52,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:53,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:53,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:55,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:55,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-13 09:31:55,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:31:55,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3100 [2020-10-13 09:31:55,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:55,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:31:55,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-13 09:31:55,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-13 09:31:55,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:31:55,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:31:55,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:55,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:55,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:55,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:31:55,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:55,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:31:55,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:55,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:31:55,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:31:55,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:31:55,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:31:55,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:31:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:56,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:56,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:56,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:31:56,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:56,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 09:31:56,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:56,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:31:56,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:31:56,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 09:31:56,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:31:56,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:31:56,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:56,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:56,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:56,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 09:31:56,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:56,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-13 09:31:56,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:56,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:31:56,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:31:56,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 09:31:56,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:31:56,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-13 09:31:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:56,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:56,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:56,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:31:56,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:56,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 09:31:56,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:56,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:31:56,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-13 09:31:56,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:31:56,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:31:56,406 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 253 proven. 75 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-13 09:31:56,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867148521] [2020-10-13 09:31:56,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:31:56,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:31:56,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765033449] [2020-10-13 09:31:56,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:31:56,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:31:56,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:31:56,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:31:56,408 INFO L87 Difference]: Start difference. First operand 8415 states and 11077 transitions. Second operand 7 states. [2020-10-13 09:32:12,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:32:12,962 INFO L93 Difference]: Finished difference Result 22257 states and 30599 transitions. [2020-10-13 09:32:12,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:32:12,967 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 325 [2020-10-13 09:32:12,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:32:13,029 INFO L225 Difference]: With dead ends: 22257 [2020-10-13 09:32:13,030 INFO L226 Difference]: Without dead ends: 13356 [2020-10-13 09:32:13,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:32:13,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13356 states.