/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 14:16:53,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 14:16:53,491 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 14:16:53,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 14:16:53,531 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 14:16:53,539 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 14:16:53,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 14:16:53,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 14:16:53,546 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 14:16:53,548 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 14:16:53,549 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 14:16:53,550 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 14:16:53,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 14:16:53,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 14:16:53,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 14:16:53,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 14:16:53,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 14:16:53,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 14:16:53,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 14:16:53,568 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 14:16:53,570 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 14:16:53,571 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 14:16:53,572 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 14:16:53,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 14:16:53,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 14:16:53,584 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 14:16:53,585 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 14:16:53,586 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 14:16:53,586 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 14:16:53,592 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 14:16:53,592 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 14:16:53,593 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 14:16:53,594 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 14:16:53,594 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 14:16:53,599 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 14:16:53,600 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 14:16:53,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 14:16:53,601 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 14:16:53,601 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 14:16:53,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 14:16:53,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 14:16:53,605 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 14:16:53,640 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 14:16:53,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 14:16:53,642 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 14:16:53,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 14:16:53,642 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 14:16:53,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 14:16:53,642 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 14:16:53,643 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 14:16:53,643 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 14:16:53,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 14:16:53,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 14:16:53,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 14:16:53,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 14:16:53,644 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 14:16:53,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 14:16:53,644 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 14:16:53,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 14:16:53,644 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 14:16:53,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 14:16:53,645 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 14:16:53,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 14:16:53,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 14:16:53,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 14:16:53,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 14:16:53,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 14:16:53,646 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 14:16:53,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 14:16:53,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 14:16:53,646 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 14:16:53,647 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 14:16:53,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 14:16:53,915 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 14:16:53,919 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 14:16:53,920 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 14:16:53,920 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 14:16:53,921 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label43.c [2020-10-12 14:16:53,990 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13e9ed6c1/125d5bd7188c4462bd8a71a6447a037d/FLAG99f09ca8e [2020-10-12 14:16:54,628 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 14:16:54,629 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label43.c [2020-10-12 14:16:54,656 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13e9ed6c1/125d5bd7188c4462bd8a71a6447a037d/FLAG99f09ca8e [2020-10-12 14:16:54,813 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13e9ed6c1/125d5bd7188c4462bd8a71a6447a037d [2020-10-12 14:16:54,822 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 14:16:54,823 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 14:16:54,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 14:16:54,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 14:16:54,828 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 14:16:54,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:16:54" (1/1) ... [2020-10-12 14:16:54,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35692340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:16:54, skipping insertion in model container [2020-10-12 14:16:54,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:16:54" (1/1) ... [2020-10-12 14:16:54,840 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 14:16:54,929 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 14:16:55,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:16:55,770 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 14:16:56,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:16:56,077 INFO L208 MainTranslator]: Completed translation [2020-10-12 14:16:56,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:16:56 WrapperNode [2020-10-12 14:16:56,078 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 14:16:56,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 14:16:56,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 14:16:56,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 14:16:56,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:16:56" (1/1) ... [2020-10-12 14:16:56,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:16:56" (1/1) ... [2020-10-12 14:16:56,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:16:56" (1/1) ... [2020-10-12 14:16:56,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:16:56" (1/1) ... [2020-10-12 14:16:56,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:16:56" (1/1) ... [2020-10-12 14:16:56,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:16:56" (1/1) ... [2020-10-12 14:16:56,243 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:16:56" (1/1) ... [2020-10-12 14:16:56,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 14:16:56,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 14:16:56,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 14:16:56,266 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 14:16:56,267 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:16:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 14:16:56,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 14:16:56,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 14:16:56,342 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 14:16:56,342 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 14:16:56,342 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 14:16:56,343 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 14:16:56,343 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 14:16:56,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 14:16:56,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 14:16:56,344 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 14:16:56,345 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 14:16:56,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 14:16:56,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 14:17:02,363 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 14:17:02,363 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 14:17:02,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:17:02 BoogieIcfgContainer [2020-10-12 14:17:02,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 14:17:02,374 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 14:17:02,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 14:17:02,377 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 14:17:02,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 02:16:54" (1/3) ... [2020-10-12 14:17:02,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0dfa3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:17:02, skipping insertion in model container [2020-10-12 14:17:02,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:16:56" (2/3) ... [2020-10-12 14:17:02,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0dfa3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:17:02, skipping insertion in model container [2020-10-12 14:17:02,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:17:02" (3/3) ... [2020-10-12 14:17:02,381 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label43.c [2020-10-12 14:17:02,393 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 14:17:02,402 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 14:17:02,423 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 14:17:02,457 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 14:17:02,457 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 14:17:02,457 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 14:17:02,457 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 14:17:02,457 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 14:17:02,457 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 14:17:02,458 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 14:17:02,458 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 14:17:02,493 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-12 14:17:02,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 14:17:02,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:17:02,506 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, 1, 1] [2020-10-12 14:17:02,507 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:17:02,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:17:02,516 INFO L82 PathProgramCache]: Analyzing trace with hash 402824616, now seen corresponding path program 1 times [2020-10-12 14:17:02,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:17:02,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349477546] [2020-10-12 14:17:02,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:17:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:02,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:03,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:03,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 14:17:03,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:03,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 522 [2020-10-12 14:17:03,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:03,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:17:03,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:17:03,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 14:17:03,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 14:17:03,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:17:03,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:03,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:03,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:03,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:17:03,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:03,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 14:17:03,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:03,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:17:03,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:17:03,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:17:03,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:03,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:17:03,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349477546] [2020-10-12 14:17:03,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:17:03,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 14:17:03,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545865357] [2020-10-12 14:17:03,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:17:03,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:17:03,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:17:03,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:17:03,525 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 5 states. [2020-10-12 14:17:12,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:17:12,483 INFO L93 Difference]: Finished difference Result 1589 states and 2888 transitions. [2020-10-12 14:17:12,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 14:17:12,486 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-12 14:17:12,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:17:12,516 INFO L225 Difference]: With dead ends: 1589 [2020-10-12 14:17:12,516 INFO L226 Difference]: Without dead ends: 1054 [2020-10-12 14:17:12,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:17:12,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2020-10-12 14:17:12,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 1030. [2020-10-12 14:17:12,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1030 states. [2020-10-12 14:17:12,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1651 transitions. [2020-10-12 14:17:12,646 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1651 transitions. Word has length 64 [2020-10-12 14:17:12,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:17:12,647 INFO L479 AbstractCegarLoop]: Abstraction has 1030 states and 1651 transitions. [2020-10-12 14:17:12,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:17:12,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1651 transitions. [2020-10-12 14:17:12,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-12 14:17:12,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:17:12,656 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:17:12,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 14:17:12,656 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:17:12,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:17:12,657 INFO L82 PathProgramCache]: Analyzing trace with hash -284693465, now seen corresponding path program 1 times [2020-10-12 14:17:12,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:17:12,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597557545] [2020-10-12 14:17:12,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:17:12,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:12,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:12,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:13,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:14,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:14,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:14,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-12 14:17:14,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:17:14,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1686 [2020-10-12 14:17:14,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:14,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 14:17:14,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:17:14,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-12 14:17:14,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:17:14,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:17:14,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:14,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:14,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:14,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:17:14,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:14,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 14:17:14,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:14,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:17:14,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:17:14,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:17:14,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:17:14,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:17:14,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:14,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:14,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:14,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:14,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 14:17:14,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:17:14,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-12 14:17:14,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:14,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:17:14,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:17:14,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 14:17:14,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-12 14:17:14,956 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 53 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 14:17:14,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597557545] [2020-10-12 14:17:14,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:17:14,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:17:14,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530074848] [2020-10-12 14:17:14,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 14:17:14,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:17:14,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 14:17:14,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:17:14,960 INFO L87 Difference]: Start difference. First operand 1030 states and 1651 transitions. Second operand 6 states. [2020-10-12 14:17:21,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:17:21,427 INFO L93 Difference]: Finished difference Result 2689 states and 4422 transitions. [2020-10-12 14:17:21,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 14:17:21,428 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2020-10-12 14:17:21,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:17:21,437 INFO L225 Difference]: With dead ends: 2689 [2020-10-12 14:17:21,438 INFO L226 Difference]: Without dead ends: 1665 [2020-10-12 14:17:21,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:17:21,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2020-10-12 14:17:21,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 1659. [2020-10-12 14:17:21,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1659 states. [2020-10-12 14:17:21,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1659 states to 1659 states and 2316 transitions. [2020-10-12 14:17:21,530 INFO L78 Accepts]: Start accepts. Automaton has 1659 states and 2316 transitions. Word has length 134 [2020-10-12 14:17:21,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:17:21,531 INFO L479 AbstractCegarLoop]: Abstraction has 1659 states and 2316 transitions. [2020-10-12 14:17:21,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 14:17:21,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1659 states and 2316 transitions. [2020-10-12 14:17:21,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-12 14:17:21,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:17:21,537 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:17:21,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 14:17:21,537 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:17:21,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:17:21,538 INFO L82 PathProgramCache]: Analyzing trace with hash -459276224, now seen corresponding path program 1 times [2020-10-12 14:17:21,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:17:21,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610509314] [2020-10-12 14:17:21,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:17:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:21,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:21,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:22,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:22,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:23,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:23,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-12 14:17:23,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:17:23,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1509 [2020-10-12 14:17:23,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:23,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 14:17:23,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:17:23,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-12 14:17:23,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:23,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:17:23,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:23,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:23,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:23,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:17:23,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:23,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 14:17:23,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:23,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:17:23,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:17:23,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:17:23,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 14:17:23,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:17:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:23,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:23,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:23,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:23,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 14:17:23,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:17:23,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-12 14:17:23,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:23,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:17:23,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:17:23,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 14:17:23,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:23,529 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 14:17:23,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610509314] [2020-10-12 14:17:23,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:17:23,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 14:17:23,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601678286] [2020-10-12 14:17:23,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:17:23,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:17:23,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:17:23,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:17:23,534 INFO L87 Difference]: Start difference. First operand 1659 states and 2316 transitions. Second operand 7 states. [2020-10-12 14:17:33,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:17:33,966 INFO L93 Difference]: Finished difference Result 3664 states and 5476 transitions. [2020-10-12 14:17:33,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 14:17:33,968 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 150 [2020-10-12 14:17:33,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:17:33,981 INFO L225 Difference]: With dead ends: 3664 [2020-10-12 14:17:33,982 INFO L226 Difference]: Without dead ends: 2318 [2020-10-12 14:17:33,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-12 14:17:33,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2020-10-12 14:17:34,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 2300. [2020-10-12 14:17:34,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2300 states. [2020-10-12 14:17:34,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2300 states to 2300 states and 3073 transitions. [2020-10-12 14:17:34,049 INFO L78 Accepts]: Start accepts. Automaton has 2300 states and 3073 transitions. Word has length 150 [2020-10-12 14:17:34,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:17:34,049 INFO L479 AbstractCegarLoop]: Abstraction has 2300 states and 3073 transitions. [2020-10-12 14:17:34,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:17:34,050 INFO L276 IsEmpty]: Start isEmpty. Operand 2300 states and 3073 transitions. [2020-10-12 14:17:34,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-12 14:17:34,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:17:34,054 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:17:34,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 14:17:34,055 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:17:34,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:17:34,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1809206457, now seen corresponding path program 1 times [2020-10-12 14:17:34,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:17:34,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346545203] [2020-10-12 14:17:34,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:17:34,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:34,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:34,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:34,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:35,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:36,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:36,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-12 14:17:36,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:17:36,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2675 [2020-10-12 14:17:36,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:36,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 14:17:36,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:17:36,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-12 14:17:36,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:17:36,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:17:36,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:36,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:36,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:36,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:17:36,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:36,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 14:17:36,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:36,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:17:36,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:17:36,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:17:36,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:36,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:17:36,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:36,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:37,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:37,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 14:17:37,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:37,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-12 14:17:37,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:37,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:17:37,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:17:37,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 14:17:37,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:37,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 14:17:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:37,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:37,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:37,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 14:17:37,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:37,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-12 14:17:37,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:37,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:17:37,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:17:37,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-12 14:17:37,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:37,579 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 115 proven. 78 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 14:17:37,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346545203] [2020-10-12 14:17:37,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:17:37,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:17:37,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542352347] [2020-10-12 14:17:37,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:17:37,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:17:37,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:17:37,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:17:37,582 INFO L87 Difference]: Start difference. First operand 2300 states and 3073 transitions. Second operand 8 states. [2020-10-12 14:17:47,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:17:47,010 INFO L93 Difference]: Finished difference Result 4989 states and 7097 transitions. [2020-10-12 14:17:47,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:17:47,019 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 242 [2020-10-12 14:17:47,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:17:47,039 INFO L225 Difference]: With dead ends: 4989 [2020-10-12 14:17:47,039 INFO L226 Difference]: Without dead ends: 3624 [2020-10-12 14:17:47,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-12 14:17:47,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3624 states. [2020-10-12 14:17:47,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3624 to 3239. [2020-10-12 14:17:47,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3239 states. [2020-10-12 14:17:47,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3239 states to 3239 states and 4147 transitions. [2020-10-12 14:17:47,148 INFO L78 Accepts]: Start accepts. Automaton has 3239 states and 4147 transitions. Word has length 242 [2020-10-12 14:17:47,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:17:47,148 INFO L479 AbstractCegarLoop]: Abstraction has 3239 states and 4147 transitions. [2020-10-12 14:17:47,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:17:47,149 INFO L276 IsEmpty]: Start isEmpty. Operand 3239 states and 4147 transitions. [2020-10-12 14:17:47,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2020-10-12 14:17:47,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:17:47,159 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:17:47,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 14:17:47,159 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:17:47,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:17:47,160 INFO L82 PathProgramCache]: Analyzing trace with hash 697115230, now seen corresponding path program 1 times [2020-10-12 14:17:47,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:17:47,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497856382] [2020-10-12 14:17:47,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:17:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:47,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:47,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:47,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:48,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:51,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:52,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:52,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 402 [2020-10-12 14:17:52,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 14:17:52,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 14:17:52,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:52,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:17:52,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:17:52,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-12 14:17:52,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:17:52,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:17:52,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:52,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:52,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:52,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:17:52,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:52,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 14:17:52,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:52,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:17:52,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:17:52,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:17:52,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:52,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:17:52,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:52,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:52,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:52,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-12 14:17:52,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:17:52,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-12 14:17:52,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:52,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:17:52,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:17:52,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-12 14:17:52,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:17:53,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-12 14:17:53,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:17:53,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:53,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:17:53,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:17:53,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 14:17:53,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:17:53,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-12 14:17:53,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:17:53,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:17:53,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-12 14:17:53,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:17:53,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:17:54,044 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 116 proven. 117 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 14:17:54,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497856382] [2020-10-12 14:17:54,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:17:54,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:17:54,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757725437] [2020-10-12 14:17:54,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:17:54,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:17:54,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:17:54,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:17:54,047 INFO L87 Difference]: Start difference. First operand 3239 states and 4147 transitions. Second operand 8 states. [2020-10-12 14:18:03,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:18:03,671 INFO L93 Difference]: Finished difference Result 8126 states and 10836 transitions. [2020-10-12 14:18:03,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 14:18:03,673 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 390 [2020-10-12 14:18:03,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:18:03,696 INFO L225 Difference]: With dead ends: 8126 [2020-10-12 14:18:03,696 INFO L226 Difference]: Without dead ends: 5200 [2020-10-12 14:18:03,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-10-12 14:18:03,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5200 states. [2020-10-12 14:18:03,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5200 to 5149. [2020-10-12 14:18:03,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5149 states. [2020-10-12 14:18:03,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5149 states to 5149 states and 6605 transitions. [2020-10-12 14:18:03,839 INFO L78 Accepts]: Start accepts. Automaton has 5149 states and 6605 transitions. Word has length 390 [2020-10-12 14:18:03,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:18:03,840 INFO L479 AbstractCegarLoop]: Abstraction has 5149 states and 6605 transitions. [2020-10-12 14:18:03,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:18:03,840 INFO L276 IsEmpty]: Start isEmpty. Operand 5149 states and 6605 transitions. [2020-10-12 14:18:03,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2020-10-12 14:18:03,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:18:03,856 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:18:03,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 14:18:03,856 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:18:03,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:18:03,857 INFO L82 PathProgramCache]: Analyzing trace with hash -404797923, now seen corresponding path program 1 times [2020-10-12 14:18:03,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:18:03,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175771721] [2020-10-12 14:18:03,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:18:03,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:03,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:04,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:04,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:05,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:06,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:08,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:08,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 445 [2020-10-12 14:18:08,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 14:18:08,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 14:18:08,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:08,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 14:18:08,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:18:08,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 439 [2020-10-12 14:18:08,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:09,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:18:09,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:09,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:09,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:09,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:18:09,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:18:09,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 14:18:09,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:09,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:18:09,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:18:09,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:18:09,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:18:09,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:18:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:09,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:09,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:09,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:09,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 14:18:09,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:18:09,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-12 14:18:09,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:09,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:18:09,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:18:09,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 14:18:09,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:09,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 14:18:09,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:09,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:09,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:10,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:10,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:18:10,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:18:10,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 773 [2020-10-12 14:18:10,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:10,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 14:18:10,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:18:10,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-12 14:18:10,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:11,887 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 12 proven. 187 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 14:18:11,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [175771721] [2020-10-12 14:18:11,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:18:11,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 14:18:11,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034455598] [2020-10-12 14:18:11,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 14:18:11,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:18:11,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 14:18:11,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-12 14:18:11,890 INFO L87 Difference]: Start difference. First operand 5149 states and 6605 transitions. Second operand 11 states. [2020-10-12 14:18:12,944 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-10-12 14:18:27,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:18:27,409 INFO L93 Difference]: Finished difference Result 7095 states and 10195 transitions. [2020-10-12 14:18:27,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 14:18:27,411 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 433 [2020-10-12 14:18:27,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:18:27,442 INFO L225 Difference]: With dead ends: 7095 [2020-10-12 14:18:27,442 INFO L226 Difference]: Without dead ends: 7093 [2020-10-12 14:18:27,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=234, Invalid=636, Unknown=0, NotChecked=0, Total=870 [2020-10-12 14:18:27,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7093 states. [2020-10-12 14:18:27,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7093 to 5478. [2020-10-12 14:18:27,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5478 states. [2020-10-12 14:18:27,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5478 states to 5478 states and 7236 transitions. [2020-10-12 14:18:27,623 INFO L78 Accepts]: Start accepts. Automaton has 5478 states and 7236 transitions. Word has length 433 [2020-10-12 14:18:27,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:18:27,624 INFO L479 AbstractCegarLoop]: Abstraction has 5478 states and 7236 transitions. [2020-10-12 14:18:27,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 14:18:27,624 INFO L276 IsEmpty]: Start isEmpty. Operand 5478 states and 7236 transitions. [2020-10-12 14:18:27,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2020-10-12 14:18:27,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:18:27,665 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, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:18:27,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 14:18:27,666 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:18:27,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:18:27,666 INFO L82 PathProgramCache]: Analyzing trace with hash 811833030, now seen corresponding path program 1 times [2020-10-12 14:18:27,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:18:27,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433949482] [2020-10-12 14:18:27,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:18:27,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:28,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:28,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:28,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:32,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:32,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 738 [2020-10-12 14:18:32,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:18:32,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-12 14:18:32,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:32,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 14:18:32,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 366 [2020-10-12 14:18:32,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 304 [2020-10-12 14:18:32,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:33,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:18:33,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:33,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:33,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:33,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:18:33,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:18:33,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:18:33,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:33,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:18:33,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:18:33,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:18:33,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:33,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:18:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:33,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:33,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:33,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:18:33,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:18:33,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 14:18:33,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:33,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:18:33,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:18:33,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:18:33,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:33,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:18:33,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:33,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:33,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:33,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 14:18:33,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:18:33,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 14:18:33,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:33,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:18:33,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:18:33,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 14:18:33,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:33,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-12 14:18:33,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:33,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:33,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:34,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:34,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:34,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-12 14:18:34,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:18:34,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1449 [2020-10-12 14:18:34,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:34,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 14:18:34,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:18:34,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 307 [2020-10-12 14:18:34,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:35,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:18:35,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:35,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:35,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:35,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 14:18:35,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:18:35,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-12 14:18:35,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:35,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:18:35,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:18:35,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 14:18:35,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:36,791 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 524 proven. 2 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-12 14:18:36,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433949482] [2020-10-12 14:18:36,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:18:36,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 14:18:36,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438022433] [2020-10-12 14:18:36,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 14:18:36,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:18:36,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 14:18:36,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-12 14:18:36,802 INFO L87 Difference]: Start difference. First operand 5478 states and 7236 transitions. Second operand 9 states. [2020-10-12 14:18:41,419 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2020-10-12 14:18:47,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:18:47,576 INFO L93 Difference]: Finished difference Result 8492 states and 11824 transitions. [2020-10-12 14:18:47,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 14:18:47,578 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 722 [2020-10-12 14:18:47,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:18:47,619 INFO L225 Difference]: With dead ends: 8492 [2020-10-12 14:18:47,619 INFO L226 Difference]: Without dead ends: 5822 [2020-10-12 14:18:47,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2020-10-12 14:18:47,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5822 states. [2020-10-12 14:18:47,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5822 to 5805. [2020-10-12 14:18:47,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5805 states. [2020-10-12 14:18:47,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5805 states to 5805 states and 7609 transitions. [2020-10-12 14:18:47,754 INFO L78 Accepts]: Start accepts. Automaton has 5805 states and 7609 transitions. Word has length 722 [2020-10-12 14:18:47,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:18:47,755 INFO L479 AbstractCegarLoop]: Abstraction has 5805 states and 7609 transitions. [2020-10-12 14:18:47,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 14:18:47,755 INFO L276 IsEmpty]: Start isEmpty. Operand 5805 states and 7609 transitions. [2020-10-12 14:18:47,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 728 [2020-10-12 14:18:47,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:18:47,792 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, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:18:47,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 14:18:47,792 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:18:47,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:18:47,793 INFO L82 PathProgramCache]: Analyzing trace with hash -2410510, now seen corresponding path program 1 times [2020-10-12 14:18:47,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:18:47,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553472126] [2020-10-12 14:18:47,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:18:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:47,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:48,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:48,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:49,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:51,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:52,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:52,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 743 [2020-10-12 14:18:52,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 14:18:52,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 14:18:52,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:52,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 14:18:52,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 371 [2020-10-12 14:18:52,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 304 [2020-10-12 14:18:52,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:53,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:18:53,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:53,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:53,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:53,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:18:53,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:18:53,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 14:18:53,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:53,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:18:53,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:18:53,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:18:53,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:53,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:18:53,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:53,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:53,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:53,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:18:53,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:18:53,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 14:18:53,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:53,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:18:53,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:18:53,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:18:53,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:53,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:18:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:53,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:53,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:53,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 14:18:53,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:18:53,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-12 14:18:53,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:53,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:18:53,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:18:53,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 14:18:53,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:53,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-10-12 14:18:53,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:53,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:53,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:54,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:54,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:54,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-12 14:18:54,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:18:54,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1194 [2020-10-12 14:18:54,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:54,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 14:18:54,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:18:54,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 307 [2020-10-12 14:18:54,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:54,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:18:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:18:54,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:18:54,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:18:54,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 14:18:54,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:18:54,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 14:18:54,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:18:54,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:18:54,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:18:54,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 14:18:54,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:18:57,080 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 529 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-12 14:18:57,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553472126] [2020-10-12 14:18:57,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:18:57,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 14:18:57,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947313220] [2020-10-12 14:18:57,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 14:18:57,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:18:57,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 14:18:57,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-12 14:18:57,083 INFO L87 Difference]: Start difference. First operand 5805 states and 7609 transitions. Second operand 10 states. [2020-10-12 14:19:04,229 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2020-10-12 14:19:12,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:19:12,563 INFO L93 Difference]: Finished difference Result 9156 states and 12724 transitions. [2020-10-12 14:19:12,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 14:19:12,565 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 727 [2020-10-12 14:19:12,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:19:12,585 INFO L225 Difference]: With dead ends: 9156 [2020-10-12 14:19:12,586 INFO L226 Difference]: Without dead ends: 6159 [2020-10-12 14:19:12,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2020-10-12 14:19:12,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6159 states. [2020-10-12 14:19:12,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6159 to 6125. [2020-10-12 14:19:12,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6125 states. [2020-10-12 14:19:12,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6125 states to 6125 states and 7964 transitions. [2020-10-12 14:19:12,744 INFO L78 Accepts]: Start accepts. Automaton has 6125 states and 7964 transitions. Word has length 727 [2020-10-12 14:19:12,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:19:12,745 INFO L479 AbstractCegarLoop]: Abstraction has 6125 states and 7964 transitions. [2020-10-12 14:19:12,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 14:19:12,746 INFO L276 IsEmpty]: Start isEmpty. Operand 6125 states and 7964 transitions. [2020-10-12 14:19:12,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2020-10-12 14:19:12,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:19:12,778 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, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:19:12,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 14:19:12,778 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:19:12,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:19:12,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1981991494, now seen corresponding path program 1 times [2020-10-12 14:19:12,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:19:12,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014887337] [2020-10-12 14:19:12,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:19:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:13,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:13,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:13,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:14,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:16,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:16,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:18,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:19:18,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 744 [2020-10-12 14:19:18,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 14:19:18,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-12 14:19:18,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:19:18,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 14:19:18,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:19:18,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 652 [2020-10-12 14:19:18,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:19:18,314 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-10-12 14:19:18,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:19:18,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:18,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:18,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:19:18,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:19:18,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:19:18,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 14:19:18,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:19:18,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:19:18,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:19:18,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:19:18,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:19:18,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:19:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:18,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:19,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:19:19,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:19:19,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:19:19,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 555 [2020-10-12 14:19:19,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:19:19,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:19:19,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:19:19,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-12 14:19:19,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:19:19,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:19:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:19,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:19,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:19,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:19:19,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 14:19:19,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:19:19,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-12 14:19:19,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:19:19,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:19:19,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:19:19,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 14:19:19,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:19:19,689 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 23 [2020-10-12 14:19:19,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2020-10-12 14:19:19,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:19,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:20,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:20,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:21,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:24,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:19:24,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-12 14:19:24,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:19:24,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4519 [2020-10-12 14:19:24,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:19:24,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 14:19:24,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:19:24,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 307 [2020-10-12 14:19:24,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:19:25,122 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2020-10-12 14:19:25,366 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-10-12 14:19:25,610 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-10-12 14:19:25,892 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2020-10-12 14:19:26,312 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-10-12 14:19:26,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:19:26,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:26,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:26,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:19:26,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 14:19:26,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:19:26,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 14:19:26,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:19:26,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:19:26,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:19:26,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 14:19:26,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:19:31,015 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 517 proven. 90 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 14:19:31,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014887337] [2020-10-12 14:19:31,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:19:31,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 14:19:31,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931973731] [2020-10-12 14:19:31,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 14:19:31,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:19:31,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 14:19:31,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-12 14:19:31,018 INFO L87 Difference]: Start difference. First operand 6125 states and 7964 transitions. Second operand 17 states. [2020-10-12 14:19:31,320 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 45 [2020-10-12 14:19:33,439 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-12 14:19:35,502 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2020-10-12 14:19:36,065 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 66 [2020-10-12 14:19:36,456 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 96 [2020-10-12 14:19:38,573 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 82 [2020-10-12 14:19:39,080 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 80 [2020-10-12 14:19:40,016 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2020-10-12 14:19:41,146 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 69 [2020-10-12 14:19:44,955 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2020-10-12 14:19:45,448 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 69 [2020-10-12 14:19:50,037 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2020-10-12 14:19:50,609 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 72 [2020-10-12 14:19:52,374 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-10-12 14:19:53,032 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2020-10-12 14:19:54,000 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 76 [2020-10-12 14:19:55,242 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 96 [2020-10-12 14:19:55,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:19:55,602 INFO L93 Difference]: Finished difference Result 9833 states and 13506 transitions. [2020-10-12 14:19:55,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-12 14:19:55,604 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 728 [2020-10-12 14:19:55,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:19:55,623 INFO L225 Difference]: With dead ends: 9833 [2020-10-12 14:19:55,623 INFO L226 Difference]: Without dead ends: 6489 [2020-10-12 14:19:55,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=439, Invalid=1367, Unknown=0, NotChecked=0, Total=1806 [2020-10-12 14:19:55,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6489 states. [2020-10-12 14:19:55,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6489 to 6426. [2020-10-12 14:19:55,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6426 states. [2020-10-12 14:19:55,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6426 states to 6426 states and 8287 transitions. [2020-10-12 14:19:55,777 INFO L78 Accepts]: Start accepts. Automaton has 6426 states and 8287 transitions. Word has length 728 [2020-10-12 14:19:55,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:19:55,778 INFO L479 AbstractCegarLoop]: Abstraction has 6426 states and 8287 transitions. [2020-10-12 14:19:55,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 14:19:55,778 INFO L276 IsEmpty]: Start isEmpty. Operand 6426 states and 8287 transitions. [2020-10-12 14:19:55,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2020-10-12 14:19:55,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:19:55,802 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, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:19:55,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 14:19:55,803 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:19:55,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:19:55,803 INFO L82 PathProgramCache]: Analyzing trace with hash -669502916, now seen corresponding path program 1 times [2020-10-12 14:19:55,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:19:55,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298538251] [2020-10-12 14:19:55,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:19:55,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:56,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:56,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:58,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:01,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:01,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 744 [2020-10-12 14:20:01,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:20:01,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-12 14:20:01,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:01,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 14:20:01,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:20:01,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 664 [2020-10-12 14:20:01,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:01,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:20:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:01,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:01,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:01,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:20:01,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:01,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:20:01,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:01,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:20:01,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:20:01,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:20:01,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:01,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:20:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:01,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:01,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:01,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:20:01,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:01,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-12 14:20:01,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:01,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:20:01,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:20:01,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-12 14:20:01,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:02,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:20:02,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:02,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:02,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:02,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:02,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 14:20:02,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:20:02,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-12 14:20:02,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:02,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:20:02,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:20:02,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 14:20:02,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:02,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2020-10-12 14:20:02,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:02,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:02,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:02,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:03,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:04,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:04,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-12 14:20:04,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:20:04,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1767 [2020-10-12 14:20:04,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:04,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 14:20:04,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:20:04,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 307 [2020-10-12 14:20:04,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:04,672 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-10-12 14:20:04,844 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-10-12 14:20:05,024 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2020-10-12 14:20:05,219 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-10-12 14:20:05,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:20:05,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:05,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:05,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:05,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:05,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:05,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:05,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 14:20:05,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:20:05,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-12 14:20:05,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:05,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 14:20:05,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:20:05,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 14:20:05,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:09,757 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 409 proven. 198 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 14:20:09,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298538251] [2020-10-12 14:20:09,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:20:09,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 14:20:09,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621133831] [2020-10-12 14:20:09,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 14:20:09,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:20:09,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 14:20:09,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2020-10-12 14:20:09,760 INFO L87 Difference]: Start difference. First operand 6426 states and 8287 transitions. Second operand 19 states. [2020-10-12 14:20:09,972 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 35 [2020-10-12 14:20:10,174 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 41 [2020-10-12 14:20:12,740 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 45 [2020-10-12 14:20:13,440 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2020-10-12 14:20:14,024 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 82 [2020-10-12 14:20:14,555 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 90 [2020-10-12 14:20:14,724 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 49 [2020-10-12 14:20:14,908 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2020-10-12 14:20:15,972 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 89 [2020-10-12 14:20:18,354 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-10-12 14:20:18,851 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 96 [2020-10-12 14:20:19,520 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 88 [2020-10-12 14:20:20,147 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 61 [2020-10-12 14:20:20,650 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2020-10-12 14:20:21,144 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2020-10-12 14:20:21,309 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-12 14:20:22,032 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 59 [2020-10-12 14:20:25,678 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2020-10-12 14:20:27,605 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-12 14:20:28,475 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 63 [2020-10-12 14:20:29,731 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 80 [2020-10-12 14:20:34,145 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2020-10-12 14:20:34,888 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 66 [2020-10-12 14:20:36,504 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 86 [2020-10-12 14:20:37,344 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 69 [2020-10-12 14:20:40,849 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 59 [2020-10-12 14:20:41,320 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 63 [2020-10-12 14:20:43,310 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2020-10-12 14:20:43,727 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 91 [2020-10-12 14:20:44,527 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 73 [2020-10-12 14:20:45,192 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 102 [2020-10-12 14:20:45,868 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 83 [2020-10-12 14:20:46,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:20:46,257 INFO L93 Difference]: Finished difference Result 10288 states and 14227 transitions. [2020-10-12 14:20:46,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-12 14:20:46,260 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 728 [2020-10-12 14:20:46,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:20:46,281 INFO L225 Difference]: With dead ends: 10288 [2020-10-12 14:20:46,281 INFO L226 Difference]: Without dead ends: 6939 [2020-10-12 14:20:46,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=688, Invalid=2972, Unknown=0, NotChecked=0, Total=3660 [2020-10-12 14:20:46,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6939 states. [2020-10-12 14:20:46,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6939 to 6734. [2020-10-12 14:20:46,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6734 states. [2020-10-12 14:20:46,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6734 states to 6734 states and 8594 transitions. [2020-10-12 14:20:46,445 INFO L78 Accepts]: Start accepts. Automaton has 6734 states and 8594 transitions. Word has length 728 [2020-10-12 14:20:46,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:20:46,446 INFO L479 AbstractCegarLoop]: Abstraction has 6734 states and 8594 transitions. [2020-10-12 14:20:46,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 14:20:46,447 INFO L276 IsEmpty]: Start isEmpty. Operand 6734 states and 8594 transitions. [2020-10-12 14:20:46,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 742 [2020-10-12 14:20:46,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:20:46,471 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, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:20:46,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 14:20:46,471 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:20:46,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:20:46,472 INFO L82 PathProgramCache]: Analyzing trace with hash 555676200, now seen corresponding path program 1 times [2020-10-12 14:20:46,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:20:46,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740158207] [2020-10-12 14:20:46,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:20:46,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:46,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:46,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking...