/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/Problem18_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:01:28,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:01:28,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:01:28,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:01:28,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:01:28,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:01:28,591 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:01:28,593 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:01:28,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:01:28,595 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:01:28,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:01:28,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:01:28,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:01:28,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:01:28,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:01:28,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:01:28,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:01:28,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:01:28,603 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:01:28,604 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:01:28,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:01:28,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:01:28,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:01:28,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:01:28,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:01:28,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:01:28,611 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:01:28,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:01:28,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:01:28,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:01:28,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:01:28,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:01:28,615 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:01:28,616 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:01:28,617 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:01:28,617 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:01:28,618 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:01:28,618 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:01:28,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:01:28,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:01:28,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:01:28,621 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 15:01:28,643 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:01:28,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:01:28,647 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:01:28,648 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:01:28,648 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:01:28,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:01:28,649 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:01:28,649 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:01:28,649 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:01:28,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:01:28,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:01:28,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:01:28,650 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:01:28,650 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:01:28,650 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:01:28,650 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:01:28,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:01:28,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:01:28,651 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:01:28,651 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:01:28,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:01:28,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:01:28,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:01:28,652 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:01:28,652 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:01:28,652 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:01:28,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:01:28,653 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:01:28,653 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:01:28,653 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 15:01:28,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:01:28,962 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:01:28,965 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:01:28,967 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:01:28,967 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:01:28,968 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label29.c [2020-10-12 15:01:29,032 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1303e2a9/c668790a5c494c879af0ef17ac6f6e20/FLAGa19157dd6 [2020-10-12 15:01:29,721 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:01:29,722 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label29.c [2020-10-12 15:01:29,760 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1303e2a9/c668790a5c494c879af0ef17ac6f6e20/FLAGa19157dd6 [2020-10-12 15:01:29,801 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1303e2a9/c668790a5c494c879af0ef17ac6f6e20 [2020-10-12 15:01:29,812 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:01:29,814 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:01:29,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:01:29,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:01:29,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:01:29,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:01:29" (1/1) ... [2020-10-12 15:01:29,827 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cd0480f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:01:29, skipping insertion in model container [2020-10-12 15:01:29,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:01:29" (1/1) ... [2020-10-12 15:01:29,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:01:29,971 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:01:31,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:01:31,787 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:01:32,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:01:32,296 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:01:32,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:01:32 WrapperNode [2020-10-12 15:01:32,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:01:32,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:01:32,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:01:32,299 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:01:32,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:01:32" (1/1) ... [2020-10-12 15:01:32,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:01:32" (1/1) ... [2020-10-12 15:01:32,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:01:32" (1/1) ... [2020-10-12 15:01:32,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:01:32" (1/1) ... [2020-10-12 15:01:32,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:01:32" (1/1) ... [2020-10-12 15:01:32,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:01:32" (1/1) ... [2020-10-12 15:01:32,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:01:32" (1/1) ... [2020-10-12 15:01:32,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:01:32,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:01:32,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:01:32,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:01:32,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:01:32" (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 15:01:32,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:01:32,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:01:32,656 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 15:01:32,657 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 15:01:32,657 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 15:01:32,657 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:01:32,657 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 15:01:32,658 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 15:01:32,658 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 15:01:32,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:01:32,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 15:01:32,659 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 15:01:32,659 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:01:32,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:01:32,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:01:38,872 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:01:38,873 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 15:01:38,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:01:38 BoogieIcfgContainer [2020-10-12 15:01:38,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:01:38,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:01:38,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:01:38,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:01:38,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:01:29" (1/3) ... [2020-10-12 15:01:38,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aac397d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:01:38, skipping insertion in model container [2020-10-12 15:01:38,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:01:32" (2/3) ... [2020-10-12 15:01:38,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aac397d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:01:38, skipping insertion in model container [2020-10-12 15:01:38,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:01:38" (3/3) ... [2020-10-12 15:01:38,902 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label29.c [2020-10-12 15:01:38,911 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:01:38,919 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:01:38,933 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:01:38,963 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:01:38,963 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:01:38,963 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:01:38,963 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:01:38,963 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:01:38,963 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:01:38,964 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:01:38,964 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:01:38,997 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-12 15:01:39,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-12 15:01:39,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:01:39,007 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] [2020-10-12 15:01:39,007 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:01:39,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:01:39,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1247826190, now seen corresponding path program 1 times [2020-10-12 15:01:39,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:01:39,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1716465264] [2020-10-12 15:01:39,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:01:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:01:39,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:01:39,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:01:39,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-12 15:01:39,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:01:39,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 389 [2020-10-12 15:01:39,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:01:39,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:01:39,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:01:39,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 15:01:39,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 15:01:39,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:01:39,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:01:39,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:01:39,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:01:39,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:01:39,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:01:39,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 15:01:39,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:01:39,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:01:39,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:01:39,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 15:01:39,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:01:39,718 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 15:01:39,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1716465264] [2020-10-12 15:01:39,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:01:39,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:01:39,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626142702] [2020-10-12 15:01:39,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 15:01:39,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:01:39,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 15:01:39,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:01:39,750 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 5 states. [2020-10-12 15:01:47,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:01:47,460 INFO L93 Difference]: Finished difference Result 2270 states and 4349 transitions. [2020-10-12 15:01:47,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 15:01:47,466 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-10-12 15:01:47,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:01:47,508 INFO L225 Difference]: With dead ends: 2270 [2020-10-12 15:01:47,508 INFO L226 Difference]: Without dead ends: 1432 [2020-10-12 15:01:47,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:01:47,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-12 15:01:47,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1425. [2020-10-12 15:01:47,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2020-10-12 15:01:47,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2643 transitions. [2020-10-12 15:01:47,692 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2643 transitions. Word has length 45 [2020-10-12 15:01:47,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:01:47,693 INFO L479 AbstractCegarLoop]: Abstraction has 1425 states and 2643 transitions. [2020-10-12 15:01:47,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 15:01:47,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2643 transitions. [2020-10-12 15:01:47,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 15:01:47,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:01:47,700 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:01:47,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:01:47,700 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:01:47,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:01:47,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1245198697, now seen corresponding path program 1 times [2020-10-12 15:01:47,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:01:47,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348733948] [2020-10-12 15:01:47,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:01:47,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:01:47,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:01:48,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:01:48,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:01:48,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 15:01:48,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:01:48,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 936 [2020-10-12 15:01:48,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:01:48,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:01:48,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:01:48,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 15:01:48,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 15:01:48,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:01:48,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:01:48,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:01:48,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:01:48,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:01:48,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:01:48,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 15:01:48,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:01:48,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:01:48,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:01:48,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 15:01:48,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:01:48,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:01:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:01:48,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:01:48,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:01:48,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 15:01:48,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:01:48,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-12 15:01:48,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:01:48,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:01:48,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:01:48,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 15:01:48,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:01:48,962 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:01:48,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348733948] [2020-10-12 15:01:48,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:01:48,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 15:01:48,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309610957] [2020-10-12 15:01:48,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:01:48,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:01:48,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:01:48,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:01:48,967 INFO L87 Difference]: Start difference. First operand 1425 states and 2643 transitions. Second operand 7 states. [2020-10-12 15:01:58,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:01:58,288 INFO L93 Difference]: Finished difference Result 4331 states and 8063 transitions. [2020-10-12 15:01:58,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:01:58,289 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2020-10-12 15:01:58,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:01:58,310 INFO L225 Difference]: With dead ends: 4331 [2020-10-12 15:01:58,310 INFO L226 Difference]: Without dead ends: 2912 [2020-10-12 15:01:58,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:01:58,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2912 states. [2020-10-12 15:01:58,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2912 to 2877. [2020-10-12 15:01:58,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2877 states. [2020-10-12 15:01:58,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2877 states to 2877 states and 4346 transitions. [2020-10-12 15:01:58,421 INFO L78 Accepts]: Start accepts. Automaton has 2877 states and 4346 transitions. Word has length 114 [2020-10-12 15:01:58,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:01:58,422 INFO L479 AbstractCegarLoop]: Abstraction has 2877 states and 4346 transitions. [2020-10-12 15:01:58,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:01:58,422 INFO L276 IsEmpty]: Start isEmpty. Operand 2877 states and 4346 transitions. [2020-10-12 15:01:58,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-12 15:01:58,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:01:58,427 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:01:58,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:01:58,428 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:01:58,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:01:58,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1788227034, now seen corresponding path program 1 times [2020-10-12 15:01:58,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:01:58,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788975950] [2020-10-12 15:01:58,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:01:58,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:01:58,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:01:58,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:01:59,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:01:59,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 15:01:59,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:01:59,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 843 [2020-10-12 15:01:59,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:01:59,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:01:59,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:01:59,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 15:01:59,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:01:59,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:01:59,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:01:59,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:01:59,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:01:59,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:01:59,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:01:59,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:01:59,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:01:59,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:01:59,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:01:59,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 15:01:59,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:01:59,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:01:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:01:59,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:01:59,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:01:59,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 15:01:59,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:01:59,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-12 15:01:59,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:01:59,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:01:59,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:01:59,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 15:01:59,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:01:59,686 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:01:59,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788975950] [2020-10-12 15:01:59,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:01:59,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 15:01:59,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462670802] [2020-10-12 15:01:59,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 15:01:59,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:01:59,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 15:01:59,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:01:59,692 INFO L87 Difference]: Start difference. First operand 2877 states and 4346 transitions. Second operand 8 states. [2020-10-12 15:02:11,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:02:11,868 INFO L93 Difference]: Finished difference Result 8725 states and 13392 transitions. [2020-10-12 15:02:11,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 15:02:11,869 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 117 [2020-10-12 15:02:11,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:02:11,904 INFO L225 Difference]: With dead ends: 8725 [2020-10-12 15:02:11,904 INFO L226 Difference]: Without dead ends: 5854 [2020-10-12 15:02:11,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:02:11,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5854 states. [2020-10-12 15:02:12,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5854 to 5779. [2020-10-12 15:02:12,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5779 states. [2020-10-12 15:02:12,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5779 states to 5779 states and 8544 transitions. [2020-10-12 15:02:12,089 INFO L78 Accepts]: Start accepts. Automaton has 5779 states and 8544 transitions. Word has length 117 [2020-10-12 15:02:12,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:02:12,090 INFO L479 AbstractCegarLoop]: Abstraction has 5779 states and 8544 transitions. [2020-10-12 15:02:12,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 15:02:12,090 INFO L276 IsEmpty]: Start isEmpty. Operand 5779 states and 8544 transitions. [2020-10-12 15:02:12,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-12 15:02:12,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:02:12,093 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:02:12,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 15:02:12,093 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:02:12,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:02:12,094 INFO L82 PathProgramCache]: Analyzing trace with hash 807821071, now seen corresponding path program 1 times [2020-10-12 15:02:12,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:02:12,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517313932] [2020-10-12 15:02:12,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:02:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:02:12,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:02:12,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:02:13,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:02:13,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-12 15:02:13,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:02:13,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1390 [2020-10-12 15:02:13,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:02:13,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:02:13,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:02:13,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 15:02:13,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:02:13,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:02:13,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:02:13,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:02:13,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:02:13,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:02:13,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:02:13,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:02:13,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:02:13,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:02:13,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:02:13,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 15:02:13,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:02:13,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:02:13,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:02:13,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:02:13,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:02:13,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 15:02:13,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:02:13,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-12 15:02:13,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:02:13,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:02:13,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:02:13,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-12 15:02:13,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:02:13,946 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:02:13,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517313932] [2020-10-12 15:02:13,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:02:13,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 15:02:13,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045269712] [2020-10-12 15:02:13,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:02:13,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:02:13,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:02:13,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:02:13,951 INFO L87 Difference]: Start difference. First operand 5779 states and 8544 transitions. Second operand 7 states. [2020-10-12 15:02:27,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:02:27,317 INFO L93 Difference]: Finished difference Result 13272 states and 20257 transitions. [2020-10-12 15:02:27,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 15:02:27,318 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2020-10-12 15:02:27,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:02:27,357 INFO L225 Difference]: With dead ends: 13272 [2020-10-12 15:02:27,358 INFO L226 Difference]: Without dead ends: 7499 [2020-10-12 15:02:27,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:02:27,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7499 states. [2020-10-12 15:02:27,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7499 to 7288. [2020-10-12 15:02:27,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7288 states. [2020-10-12 15:02:27,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7288 states to 7288 states and 10352 transitions. [2020-10-12 15:02:27,631 INFO L78 Accepts]: Start accepts. Automaton has 7288 states and 10352 transitions. Word has length 142 [2020-10-12 15:02:27,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:02:27,633 INFO L479 AbstractCegarLoop]: Abstraction has 7288 states and 10352 transitions. [2020-10-12 15:02:27,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:02:27,633 INFO L276 IsEmpty]: Start isEmpty. Operand 7288 states and 10352 transitions. [2020-10-12 15:02:27,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-12 15:02:27,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:02:27,640 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:02:27,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 15:02:27,641 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:02:27,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:02:27,641 INFO L82 PathProgramCache]: Analyzing trace with hash 725394782, now seen corresponding path program 1 times [2020-10-12 15:02:27,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:02:27,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959075483] [2020-10-12 15:02:27,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:02:27,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:02:27,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:02:27,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:02:28,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:02:28,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-12 15:02:28,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:02:28,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 940 [2020-10-12 15:02:28,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:02:28,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:02:28,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:02:28,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-10-12 15:02:28,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:02:28,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:02:28,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:02:28,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:02:28,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:02:28,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:02:28,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:02:28,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 15:02:28,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:02:28,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:02:28,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:02:28,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 15:02:28,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:02:28,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:02:28,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:02:28,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:02:29,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:02:29,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-12 15:02:29,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:02:29,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-12 15:02:29,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:02:29,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:02:29,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:02:29,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-12 15:02:29,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:02:29,706 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:02:29,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959075483] [2020-10-12 15:02:29,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:02:29,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 15:02:29,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224783191] [2020-10-12 15:02:29,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 15:02:29,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:02:29,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 15:02:29,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:02:29,709 INFO L87 Difference]: Start difference. First operand 7288 states and 10352 transitions. Second operand 6 states. [2020-10-12 15:02:44,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:02:44,568 INFO L93 Difference]: Finished difference Result 16825 states and 23282 transitions. [2020-10-12 15:02:44,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 15:02:44,575 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 231 [2020-10-12 15:02:44,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:02:44,616 INFO L225 Difference]: With dead ends: 16825 [2020-10-12 15:02:44,616 INFO L226 Difference]: Without dead ends: 9543 [2020-10-12 15:02:44,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:02:44,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9543 states. [2020-10-12 15:02:44,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9543 to 8705. [2020-10-12 15:02:44,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8705 states. [2020-10-12 15:02:44,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8705 states to 8705 states and 11817 transitions. [2020-10-12 15:02:44,830 INFO L78 Accepts]: Start accepts. Automaton has 8705 states and 11817 transitions. Word has length 231 [2020-10-12 15:02:44,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:02:44,831 INFO L479 AbstractCegarLoop]: Abstraction has 8705 states and 11817 transitions. [2020-10-12 15:02:44,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 15:02:44,831 INFO L276 IsEmpty]: Start isEmpty. Operand 8705 states and 11817 transitions. [2020-10-12 15:02:44,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-12 15:02:44,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:02:44,838 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 15:02:44,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 15:02:44,839 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:02:44,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:02:44,839 INFO L82 PathProgramCache]: Analyzing trace with hash 958678563, now seen corresponding path program 1 times [2020-10-12 15:02:44,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:02:44,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187436600] [2020-10-12 15:02:44,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:02:44,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:02:44,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:02:45,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:02:45,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:02:46,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:02:46,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 340 [2020-10-12 15:02:46,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:02:46,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1469 [2020-10-12 15:02:46,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:02:46,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:02:46,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-12 15:02:46,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-12 15:02:46,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:02:46,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:02:46,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:02:46,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:02:46,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:02:46,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:02:46,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:02:46,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:02:46,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:02:46,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:02:46,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:02:46,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:02:46,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:02:46,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:02:46,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:02:46,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:02:46,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:02:46,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-12 15:02:46,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:02:46,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-12 15:02:46,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:02:46,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:02:46,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:02:46,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-12 15:02:46,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:02:46,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-12 15:02:46,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:02:46,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:02:46,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:02:46,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 15:02:46,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:02:46,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-12 15:02:46,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:02:46,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:02:46,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:02:46,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-12 15:02:46,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:02:47,362 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 170 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 15:02:47,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187436600] [2020-10-12 15:02:47,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:02:47,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 15:02:47,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139555426] [2020-10-12 15:02:47,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:02:47,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:02:47,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:02:47,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:02:47,366 INFO L87 Difference]: Start difference. First operand 8705 states and 11817 transitions. Second operand 7 states. [2020-10-12 15:03:01,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:03:01,162 INFO L93 Difference]: Finished difference Result 18431 states and 25747 transitions. [2020-10-12 15:03:01,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 15:03:01,163 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 328 [2020-10-12 15:03:01,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:03:01,193 INFO L225 Difference]: With dead ends: 18431 [2020-10-12 15:03:01,193 INFO L226 Difference]: Without dead ends: 8927 [2020-10-12 15:03:01,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:03:01,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8927 states. [2020-10-12 15:03:01,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8927 to 8717. [2020-10-12 15:03:01,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8717 states. [2020-10-12 15:03:01,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8717 states to 8717 states and 10600 transitions. [2020-10-12 15:03:01,387 INFO L78 Accepts]: Start accepts. Automaton has 8717 states and 10600 transitions. Word has length 328 [2020-10-12 15:03:01,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:03:01,388 INFO L479 AbstractCegarLoop]: Abstraction has 8717 states and 10600 transitions. [2020-10-12 15:03:01,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:03:01,388 INFO L276 IsEmpty]: Start isEmpty. Operand 8717 states and 10600 transitions. [2020-10-12 15:03:01,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2020-10-12 15:03:01,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:03:01,398 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:03:01,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 15:03:01,399 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:03:01,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:03:01,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1710933436, now seen corresponding path program 1 times [2020-10-12 15:03:01,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:03:01,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1048318582] [2020-10-12 15:03:01,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:03:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:01,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:01,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:02,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:06,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:06,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 463 [2020-10-12 15:03:06,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:03:06,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-12 15:03:06,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:06,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:03:06,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:03:06,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 312 [2020-10-12 15:03:06,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:06,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:03:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:06,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:06,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:06,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:03:06,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:06,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:03:06,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:06,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:03:06,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:06,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 15:03:06,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:06,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:03:06,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:06,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:07,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:07,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-12 15:03:07,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:07,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 511 [2020-10-12 15:03:07,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:07,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:03:07,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:03:07,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-12 15:03:07,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:03:07,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 15:03:07,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:07,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:07,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:07,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 15:03:07,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:07,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-12 15:03:07,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:07,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:03:07,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:03:07,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 15:03:07,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:03:08,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-12 15:03:08,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:08,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:08,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:08,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 15:03:08,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:08,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 15:03:08,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:08,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:03:08,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-12 15:03:08,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:03:08,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:03:09,060 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 76 proven. 92 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 15:03:09,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1048318582] [2020-10-12 15:03:09,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:03:09,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 15:03:09,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651817853] [2020-10-12 15:03:09,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 15:03:09,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:03:09,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 15:03:09,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:03:09,064 INFO L87 Difference]: Start difference. First operand 8717 states and 10600 transitions. Second operand 8 states. [2020-10-12 15:03:19,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:03:19,664 INFO L93 Difference]: Finished difference Result 21961 states and 27315 transitions. [2020-10-12 15:03:19,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:03:19,666 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 449 [2020-10-12 15:03:19,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:03:19,714 INFO L225 Difference]: With dead ends: 21961 [2020-10-12 15:03:19,715 INFO L226 Difference]: Without dead ends: 13952 [2020-10-12 15:03:19,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:03:19,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13952 states. [2020-10-12 15:03:19,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13952 to 13852. [2020-10-12 15:03:19,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13852 states. [2020-10-12 15:03:19,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13852 states to 13852 states and 16554 transitions. [2020-10-12 15:03:19,986 INFO L78 Accepts]: Start accepts. Automaton has 13852 states and 16554 transitions. Word has length 449 [2020-10-12 15:03:19,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:03:19,987 INFO L479 AbstractCegarLoop]: Abstraction has 13852 states and 16554 transitions. [2020-10-12 15:03:19,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 15:03:19,987 INFO L276 IsEmpty]: Start isEmpty. Operand 13852 states and 16554 transitions. [2020-10-12 15:03:20,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 977 [2020-10-12 15:03:20,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:03:20,038 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:03:20,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 15:03:20,039 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:03:20,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:03:20,039 INFO L82 PathProgramCache]: Analyzing trace with hash 981864901, now seen corresponding path program 1 times [2020-10-12 15:03:20,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:03:20,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2039883259] [2020-10-12 15:03:20,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:03:20,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:20,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:20,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:24,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:24,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 996 [2020-10-12 15:03:24,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:03:24,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4248 [2020-10-12 15:03:24,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:24,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:03:24,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-12 15:03:24,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 15:03:24,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:24,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:03:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:24,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:24,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:24,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:03:24,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:24,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:03:24,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:24,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:03:24,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:24,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:03:24,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:03:24,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:03:24,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:24,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:24,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:24,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-12 15:03:24,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:24,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-12 15:03:24,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:24,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:03:24,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:24,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:03:24,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:25,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 15:03:25,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:25,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:25,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:25,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-12 15:03:25,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:25,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 15:03:25,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:25,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:03:25,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:25,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:03:25,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:03:25,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-12 15:03:25,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:25,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:25,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:25,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 15:03:25,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:25,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:03:25,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:25,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:03:25,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:25,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:03:25,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:25,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-12 15:03:25,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:25,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:25,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:25,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-12 15:03:25,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:25,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-12 15:03:25,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:25,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:03:25,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:25,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-12 15:03:25,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:25,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 15:03:25,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:25,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:25,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:25,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 15:03:25,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:25,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 15:03:25,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:25,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:03:25,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:25,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:03:25,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:03:25,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-12 15:03:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:25,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:26,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:26,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 15:03:26,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:26,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-12 15:03:26,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:26,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:03:26,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:03:26,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-12 15:03:26,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:26,628 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-12 15:03:26,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2039883259] [2020-10-12 15:03:26,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:03:26,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 15:03:26,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82136933] [2020-10-12 15:03:26,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:03:26,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:03:26,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:03:26,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:03:26,631 INFO L87 Difference]: Start difference. First operand 13852 states and 16554 transitions. Second operand 7 states. [2020-10-12 15:03:35,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:03:35,481 INFO L93 Difference]: Finished difference Result 30884 states and 38164 transitions. [2020-10-12 15:03:35,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:03:35,482 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 976 [2020-10-12 15:03:35,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:03:35,541 INFO L225 Difference]: With dead ends: 30884 [2020-10-12 15:03:35,542 INFO L226 Difference]: Without dead ends: 18450 [2020-10-12 15:03:35,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:03:35,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18450 states. [2020-10-12 15:03:35,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18450 to 18320. [2020-10-12 15:03:35,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18320 states. [2020-10-12 15:03:35,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18320 states to 18320 states and 21974 transitions. [2020-10-12 15:03:35,939 INFO L78 Accepts]: Start accepts. Automaton has 18320 states and 21974 transitions. Word has length 976 [2020-10-12 15:03:35,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:03:35,940 INFO L479 AbstractCegarLoop]: Abstraction has 18320 states and 21974 transitions. [2020-10-12 15:03:35,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:03:35,941 INFO L276 IsEmpty]: Start isEmpty. Operand 18320 states and 21974 transitions. [2020-10-12 15:03:35,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 984 [2020-10-12 15:03:35,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:03:35,982 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:03:35,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 15:03:35,982 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:03:35,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:03:35,983 INFO L82 PathProgramCache]: Analyzing trace with hash -674541781, now seen corresponding path program 1 times [2020-10-12 15:03:35,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:03:35,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253534156] [2020-10-12 15:03:35,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:03:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:36,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:36,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:40,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:40,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1003 [2020-10-12 15:03:40,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:03:40,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4456 [2020-10-12 15:03:40,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:40,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:03:40,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 856 [2020-10-12 15:03:40,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 15:03:40,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:03:40,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:03:40,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:40,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:40,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:40,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:03:40,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:40,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:03:40,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:40,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:03:40,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:40,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:03:40,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:03:40,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:03:40,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:41,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:41,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:41,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-12 15:03:41,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:41,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-12 15:03:41,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:41,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:03:41,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:41,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:03:41,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:41,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 15:03:41,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:41,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:41,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:41,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-12 15:03:41,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:41,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-12 15:03:41,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:41,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:03:41,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:41,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:03:41,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:41,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-12 15:03:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:41,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:41,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:41,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 15:03:41,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:41,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:03:41,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:41,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:03:41,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:41,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:03:41,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:41,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-12 15:03:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:41,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:41,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:41,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-12 15:03:41,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:41,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-12 15:03:41,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:41,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:03:41,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:41,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 308 [2020-10-12 15:03:41,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:41,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 15:03:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:41,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:41,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:41,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 15:03:41,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:41,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 15:03:41,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:41,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:03:41,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:41,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 15:03:41,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:41,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2020-10-12 15:03:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:41,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:41,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:41,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 15:03:41,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:41,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-12 15:03:41,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:41,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:03:41,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:03:41,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-12 15:03:41,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:42,704 INFO L134 CoverageAnalysis]: Checked inductivity of 622 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2020-10-12 15:03:42,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253534156] [2020-10-12 15:03:42,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:03:42,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 15:03:42,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973359922] [2020-10-12 15:03:42,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:03:42,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:03:42,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:03:42,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:03:42,708 INFO L87 Difference]: Start difference. First operand 18320 states and 21974 transitions. Second operand 7 states. [2020-10-12 15:03:50,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:03:50,633 INFO L93 Difference]: Finished difference Result 36736 states and 44620 transitions. [2020-10-12 15:03:50,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 15:03:50,634 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 983 [2020-10-12 15:03:50,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:03:50,687 INFO L225 Difference]: With dead ends: 36736 [2020-10-12 15:03:50,687 INFO L226 Difference]: Without dead ends: 19834 [2020-10-12 15:03:50,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:03:50,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19834 states. [2020-10-12 15:03:51,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19834 to 19804. [2020-10-12 15:03:51,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19804 states. [2020-10-12 15:03:51,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19804 states to 19804 states and 23766 transitions. [2020-10-12 15:03:51,079 INFO L78 Accepts]: Start accepts. Automaton has 19804 states and 23766 transitions. Word has length 983 [2020-10-12 15:03:51,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:03:51,081 INFO L479 AbstractCegarLoop]: Abstraction has 19804 states and 23766 transitions. [2020-10-12 15:03:51,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:03:51,081 INFO L276 IsEmpty]: Start isEmpty. Operand 19804 states and 23766 transitions. [2020-10-12 15:03:51,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 998 [2020-10-12 15:03:51,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:03:51,101 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:03:51,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 15:03:51,101 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:03:51,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:03:51,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1497676960, now seen corresponding path program 1 times [2020-10-12 15:03:51,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:03:51,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90163044] [2020-10-12 15:03:51,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:03:51,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:51,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:51,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:54,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:54,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1017 [2020-10-12 15:03:54,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:03:54,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3343 [2020-10-12 15:03:54,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:54,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:03:54,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 972 [2020-10-12 15:03:54,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 15:03:54,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:54,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:03:54,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:54,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:54,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:54,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:03:54,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:54,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:03:54,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:54,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:03:54,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:54,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:03:54,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:54,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:03:54,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:54,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:55,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:55,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-12 15:03:55,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:55,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-12 15:03:55,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:55,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:03:55,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:55,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:03:55,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:55,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 15:03:55,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:55,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:55,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:55,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-12 15:03:55,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:55,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 15:03:55,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:55,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:03:55,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:55,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:03:55,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:55,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-12 15:03:55,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:55,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:55,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:55,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 15:03:55,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:55,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:03:55,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:55,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:03:55,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:55,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:03:55,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:55,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-12 15:03:55,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:55,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:55,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:55,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-12 15:03:55,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:55,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-12 15:03:55,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:55,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:03:55,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:55,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:03:55,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:55,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 15:03:55,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:55,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:55,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:55,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 15:03:55,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:55,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 15:03:55,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:55,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:03:55,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:55,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:03:55,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:55,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-12 15:03:55,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:03:55,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:03:55,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:03:55,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 15:03:55,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:03:55,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-12 15:03:55,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:03:55,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:03:55,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:03:55,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-12 15:03:55,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:03:56,153 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 117 proven. 3 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2020-10-12 15:03:56,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90163044] [2020-10-12 15:03:56,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:03:56,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 15:03:56,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383973063] [2020-10-12 15:03:56,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 15:03:56,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:03:56,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 15:03:56,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:03:56,156 INFO L87 Difference]: Start difference. First operand 19804 states and 23766 transitions. Second operand 6 states. [2020-10-12 15:04:09,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:04:09,872 INFO L93 Difference]: Finished difference Result 53235 states and 65862 transitions. [2020-10-12 15:04:09,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:04:09,874 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 997 [2020-10-12 15:04:09,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:04:09,965 INFO L225 Difference]: With dead ends: 53235 [2020-10-12 15:04:09,965 INFO L226 Difference]: Without dead ends: 30521 [2020-10-12 15:04:10,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:04:10,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30521 states. [2020-10-12 15:04:11,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30521 to 27655. [2020-10-12 15:04:11,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27655 states. [2020-10-12 15:04:11,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27655 states to 27655 states and 32745 transitions. [2020-10-12 15:04:11,494 INFO L78 Accepts]: Start accepts. Automaton has 27655 states and 32745 transitions. Word has length 997 [2020-10-12 15:04:11,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:04:11,496 INFO L479 AbstractCegarLoop]: Abstraction has 27655 states and 32745 transitions. [2020-10-12 15:04:11,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 15:04:11,496 INFO L276 IsEmpty]: Start isEmpty. Operand 27655 states and 32745 transitions. [2020-10-12 15:04:11,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1042 [2020-10-12 15:04:11,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:04:11,518 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:04:11,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 15:04:11,519 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:04:11,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:04:11,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1336885872, now seen corresponding path program 1 times [2020-10-12 15:04:11,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:04:11,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566440493] [2020-10-12 15:04:11,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:04:11,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:11,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:12,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:12,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:16,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:16,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1063 [2020-10-12 15:04:16,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:04:16,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-12 15:04:16,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:16,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:04:16,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 944 [2020-10-12 15:04:16,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 15:04:16,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:16,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:04:16,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:16,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:16,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:16,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:04:16,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:16,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:04:16,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:16,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:04:16,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:16,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:04:16,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:17,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:04:17,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:17,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:17,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:17,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-12 15:04:17,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:17,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-12 15:04:17,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:17,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:04:17,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:17,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:04:17,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:17,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 15:04:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:17,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:17,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:17,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-12 15:04:17,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:17,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-12 15:04:17,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:17,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:04:17,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:17,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:04:17,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:17,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-12 15:04:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:17,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:17,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:17,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 15:04:17,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:17,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:04:17,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:17,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:04:17,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:17,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:04:17,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:17,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-12 15:04:17,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:17,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:17,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:17,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-12 15:04:17,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:17,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 15:04:17,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:17,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:04:17,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:17,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:04:17,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:17,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 15:04:17,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:17,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:17,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:17,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 15:04:17,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:17,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 15:04:17,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:17,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:04:17,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:17,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:04:17,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:17,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-12 15:04:17,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:17,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:17,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:17,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 15:04:17,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:17,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 15:04:17,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:17,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:04:17,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:17,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-12 15:04:17,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:17,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 932 [2020-10-12 15:04:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:17,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:17,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:17,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 15:04:17,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:17,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 15:04:17,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:17,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:04:17,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:04:17,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 15:04:17,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:18,298 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 369 proven. 2 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2020-10-12 15:04:18,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566440493] [2020-10-12 15:04:18,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:04:18,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 15:04:18,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574005475] [2020-10-12 15:04:18,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 15:04:18,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:04:18,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 15:04:18,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:04:18,301 INFO L87 Difference]: Start difference. First operand 27655 states and 32745 transitions. Second operand 8 states. [2020-10-12 15:04:34,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:04:34,344 INFO L93 Difference]: Finished difference Result 61267 states and 73871 transitions. [2020-10-12 15:04:34,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 15:04:34,346 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1041 [2020-10-12 15:04:34,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:04:34,461 INFO L225 Difference]: With dead ends: 61267 [2020-10-12 15:04:34,461 INFO L226 Difference]: Without dead ends: 34320 [2020-10-12 15:04:34,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:04:34,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34320 states. [2020-10-12 15:04:35,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34320 to 33585. [2020-10-12 15:04:35,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33585 states. [2020-10-12 15:04:35,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33585 states to 33585 states and 39261 transitions. [2020-10-12 15:04:35,102 INFO L78 Accepts]: Start accepts. Automaton has 33585 states and 39261 transitions. Word has length 1041 [2020-10-12 15:04:35,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:04:35,106 INFO L479 AbstractCegarLoop]: Abstraction has 33585 states and 39261 transitions. [2020-10-12 15:04:35,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 15:04:35,106 INFO L276 IsEmpty]: Start isEmpty. Operand 33585 states and 39261 transitions. [2020-10-12 15:04:35,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1184 [2020-10-12 15:04:35,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:04:35,131 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:04:35,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 15:04:35,131 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:04:35,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:04:35,132 INFO L82 PathProgramCache]: Analyzing trace with hash 293388644, now seen corresponding path program 1 times [2020-10-12 15:04:35,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:04:35,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334285409] [2020-10-12 15:04:35,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:04:35,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:35,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:36,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:36,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:37,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:40,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:40,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1207 [2020-10-12 15:04:40,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:04:40,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-12 15:04:40,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:40,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:04:40,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1162 [2020-10-12 15:04:40,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 15:04:40,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:40,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:04:40,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:40,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:40,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:40,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:04:40,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:40,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:04:40,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:40,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:04:40,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:40,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:04:40,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:40,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:04:40,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:40,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:40,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:40,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-12 15:04:40,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:40,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-12 15:04:40,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:40,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:04:40,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:40,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:04:40,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:40,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 15:04:40,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:40,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:40,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:40,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-12 15:04:40,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:40,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 15:04:40,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:40,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:04:40,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:40,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:04:40,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:40,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-12 15:04:40,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:40,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:40,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:40,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 15:04:40,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:40,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:04:40,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:40,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:04:40,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:40,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:04:40,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:40,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-12 15:04:40,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:41,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:41,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:41,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-12 15:04:41,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:41,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-12 15:04:41,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:41,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:04:41,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:41,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:04:41,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:41,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 15:04:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:41,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:41,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:41,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 15:04:41,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:41,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 15:04:41,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:41,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:04:41,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:41,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:04:41,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:41,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-12 15:04:41,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:41,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:41,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:41,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 15:04:41,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:41,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 15:04:41,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:41,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:04:41,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:41,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:04:41,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:41,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 932 [2020-10-12 15:04:41,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:41,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:41,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:41,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-12 15:04:41,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:41,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 15:04:41,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:41,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:04:41,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:41,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:04:41,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:41,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1074 [2020-10-12 15:04:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:41,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:41,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:41,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 15:04:41,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:41,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 15:04:41,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:41,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:04:41,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:41,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 15:04:41,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:41,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1339 backedges. 197 proven. 5 refuted. 0 times theorem prover too weak. 1137 trivial. 0 not checked. [2020-10-12 15:04:41,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334285409] [2020-10-12 15:04:41,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:04:41,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 15:04:41,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606415133] [2020-10-12 15:04:41,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 15:04:41,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:04:41,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 15:04:41,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:04:41,957 INFO L87 Difference]: Start difference. First operand 33585 states and 39261 transitions. Second operand 5 states. [2020-10-12 15:04:51,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:04:51,278 INFO L93 Difference]: Finished difference Result 74959 states and 88023 transitions. [2020-10-12 15:04:51,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 15:04:51,279 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1183 [2020-10-12 15:04:51,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:04:51,377 INFO L225 Difference]: With dead ends: 74959 [2020-10-12 15:04:51,377 INFO L226 Difference]: Without dead ends: 42090 [2020-10-12 15:04:51,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:04:51,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42090 states. [2020-10-12 15:04:51,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42090 to 41371. [2020-10-12 15:04:51,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41371 states. [2020-10-12 15:04:52,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41371 states to 41371 states and 47913 transitions. [2020-10-12 15:04:52,092 INFO L78 Accepts]: Start accepts. Automaton has 41371 states and 47913 transitions. Word has length 1183 [2020-10-12 15:04:52,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:04:52,095 INFO L479 AbstractCegarLoop]: Abstraction has 41371 states and 47913 transitions. [2020-10-12 15:04:52,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 15:04:52,096 INFO L276 IsEmpty]: Start isEmpty. Operand 41371 states and 47913 transitions. [2020-10-12 15:04:52,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1200 [2020-10-12 15:04:52,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:04:52,134 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:04:52,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 15:04:52,135 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:04:52,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:04:52,136 INFO L82 PathProgramCache]: Analyzing trace with hash -356697428, now seen corresponding path program 1 times [2020-10-12 15:04:52,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:04:52,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736211205] [2020-10-12 15:04:52,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:04:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:52,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:53,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:53,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:57,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:57,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1221 [2020-10-12 15:04:57,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:04:57,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5152 [2020-10-12 15:04:57,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:57,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:04:57,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-12 15:04:57,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 15:04:57,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:57,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:04:57,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:57,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:57,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:57,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:04:57,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:57,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:04:57,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:57,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:04:57,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:57,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:04:57,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:57,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 15:04:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:57,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:57,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:57,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-12 15:04:57,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:57,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-12 15:04:57,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:57,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:04:57,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:57,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:04:57,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:57,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 15:04:58,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:58,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:58,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:58,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-12 15:04:58,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:58,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-12 15:04:58,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:58,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:04:58,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:58,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:04:58,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:58,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-12 15:04:58,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:58,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:58,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:58,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 15:04:58,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:58,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:04:58,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:58,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:04:58,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:58,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:04:58,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:58,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-12 15:04:58,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:58,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:58,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:58,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-12 15:04:58,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:58,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-12 15:04:58,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:58,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:04:58,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:58,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-12 15:04:58,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:58,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 15:04:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:58,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:58,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:58,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 15:04:58,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:58,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 15:04:58,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:58,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:04:58,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:04:58,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:04:58,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:58,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-12 15:04:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:58,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:58,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:58,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 15:04:58,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:58,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-12 15:04:58,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:58,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:04:58,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:04:58,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-12 15:04:58,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:58,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 932 [2020-10-12 15:04:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:04:58,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:04:58,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:04:58,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-12 15:04:58,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:04:58,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-12 15:04:58,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:04:58,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:04:58,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 228 [2020-10-12 15:04:58,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:04:58,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:04:59,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1189 backedges. 342 proven. 89 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked. [2020-10-12 15:04:59,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736211205] [2020-10-12 15:04:59,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:04:59,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 15:04:59,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369349270] [2020-10-12 15:04:59,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:04:59,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:04:59,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:04:59,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:04:59,474 INFO L87 Difference]: Start difference. First operand 41371 states and 47913 transitions. Second operand 7 states. [2020-10-12 15:05:09,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:05:09,137 INFO L93 Difference]: Finished difference Result 100459 states and 118483 transitions. [2020-10-12 15:05:09,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:05:09,140 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1199 [2020-10-12 15:05:09,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:05:09,273 INFO L225 Difference]: With dead ends: 100459 [2020-10-12 15:05:09,273 INFO L226 Difference]: Without dead ends: 59804 [2020-10-12 15:05:09,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:05:09,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59804 states.