/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:31:48,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:31:48,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:31:48,608 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:31:48,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:31:48,610 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:31:48,611 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:31:48,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:31:48,614 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:31:48,615 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:31:48,616 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:31:48,617 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:31:48,617 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:31:48,618 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:31:48,619 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:31:48,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:31:48,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:31:48,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:31:48,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:31:48,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:31:48,628 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:31:48,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:31:48,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:31:48,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:31:48,638 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:31:48,638 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:31:48,638 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:31:48,640 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:31:48,641 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:31:48,641 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:31:48,642 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:31:48,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:31:48,645 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:31:48,646 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:31:48,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:31:48,647 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:31:48,647 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:31:48,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:31:48,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:31:48,655 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:31:48,656 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:31:48,657 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 09:31:48,704 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:31:48,705 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:31:48,706 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:31:48,706 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:31:48,707 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:31:48,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:31:48,707 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:31:48,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:31:48,708 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:31:48,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:31:48,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:31:48,708 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:31:48,709 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:31:48,709 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:31:48,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:31:48,709 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:31:48,709 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:31:48,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:31:48,710 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:31:48,710 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:31:48,710 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:31:48,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:31:48,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:31:48,711 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:31:48,713 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:31:48,713 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:31:48,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:31:48,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:31:48,713 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:31:48,714 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:31:49,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:31:49,050 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:31:49,053 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:31:49,054 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:31:49,055 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:31:49,056 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label24.c [2020-10-13 09:31:49,130 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e97382599/44278e4bd3064cb79a6bba5548ef0805/FLAG0b6abaa0b [2020-10-13 09:31:49,828 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:31:49,829 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label24.c [2020-10-13 09:31:49,853 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e97382599/44278e4bd3064cb79a6bba5548ef0805/FLAG0b6abaa0b [2020-10-13 09:31:49,963 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e97382599/44278e4bd3064cb79a6bba5548ef0805 [2020-10-13 09:31:49,971 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:31:49,973 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:31:49,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:31:49,974 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:31:49,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:31:49,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:31:49" (1/1) ... [2020-10-13 09:31:49,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1987833a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:31:49, skipping insertion in model container [2020-10-13 09:31:49,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:31:49" (1/1) ... [2020-10-13 09:31:49,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:31:50,082 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:31:51,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:31:51,144 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:31:51,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:31:51,663 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:31:51,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:31:51 WrapperNode [2020-10-13 09:31:51,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:31:51,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:31:51,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:31:51,666 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:31:51,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:31:51" (1/1) ... [2020-10-13 09:31:51,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:31:51" (1/1) ... [2020-10-13 09:31:51,738 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:31:51" (1/1) ... [2020-10-13 09:31:51,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:31:51" (1/1) ... [2020-10-13 09:31:51,810 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:31:51" (1/1) ... [2020-10-13 09:31:51,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:31:51" (1/1) ... [2020-10-13 09:31:51,857 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:31:51" (1/1) ... [2020-10-13 09:31:51,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:31:51,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:31:51,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:31:51,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:31:51,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:31:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:31:51,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:31:51,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:31:51,952 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:31:51,952 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:31:51,952 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:31:51,952 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:31:51,952 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:31:51,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:31:51,953 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:31:51,953 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:31:51,953 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:31:51,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:31:51,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:32:00,421 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:32:00,422 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:32:00,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:32:00 BoogieIcfgContainer [2020-10-13 09:32:00,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:32:00,434 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:32:00,434 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:32:00,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:32:00,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:31:49" (1/3) ... [2020-10-13 09:32:00,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e017349 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:32:00, skipping insertion in model container [2020-10-13 09:32:00,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:31:51" (2/3) ... [2020-10-13 09:32:00,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e017349 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:32:00, skipping insertion in model container [2020-10-13 09:32:00,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:32:00" (3/3) ... [2020-10-13 09:32:00,450 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label24.c [2020-10-13 09:32:00,458 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:32:00,467 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:32:00,479 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:32:00,508 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:32:00,508 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:32:00,508 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:32:00,508 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:32:00,508 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:32:00,508 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:32:00,509 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:32:00,509 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:32:00,539 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-13 09:32:00,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 09:32:00,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:32:00,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:32:00,553 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:32:00,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:32:00,559 INFO L82 PathProgramCache]: Analyzing trace with hash -38263863, now seen corresponding path program 1 times [2020-10-13 09:32:00,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:32:00,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310286610] [2020-10-13 09:32:00,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:32:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:00,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:01,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:01,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 09:32:01,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:01,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 455 [2020-10-13 09:32:01,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:01,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:32:01,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:32:01,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 09:32:01,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:32:01,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:32:01,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:01,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:01,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:01,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:32:01,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:01,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 09:32:01,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:01,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:32:01,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:01,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:32:01,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:32:01,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:32:01,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310286610] [2020-10-13 09:32:01,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:32:01,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:32:01,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048056271] [2020-10-13 09:32:01,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:32:01,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:32:01,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:32:01,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:32:01,496 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-13 09:32:11,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:32:11,320 INFO L93 Difference]: Finished difference Result 1692 states and 3091 transitions. [2020-10-13 09:32:11,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:32:11,322 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-10-13 09:32:11,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:32:11,346 INFO L225 Difference]: With dead ends: 1692 [2020-10-13 09:32:11,347 INFO L226 Difference]: Without dead ends: 1012 [2020-10-13 09:32:11,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:32:11,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-10-13 09:32:11,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1002. [2020-10-13 09:32:11,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-10-13 09:32:11,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1542 transitions. [2020-10-13 09:32:11,480 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1542 transitions. Word has length 66 [2020-10-13 09:32:11,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:32:11,481 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1542 transitions. [2020-10-13 09:32:11,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:32:11,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1542 transitions. [2020-10-13 09:32:11,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-13 09:32:11,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:32:11,489 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:32:11,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:32:11,489 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:32:11,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:32:11,490 INFO L82 PathProgramCache]: Analyzing trace with hash -754395436, now seen corresponding path program 1 times [2020-10-13 09:32:11,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:32:11,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343638871] [2020-10-13 09:32:11,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:32:11,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:11,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:11,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:12,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:13,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:14,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:14,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-13 09:32:14,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:32:14,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2529 [2020-10-13 09:32:14,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:14,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:32:14,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 09:32:14,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 09:32:14,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:32:14,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:32:14,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:14,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:14,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:14,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:32:14,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:14,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:32:14,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:14,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:32:14,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:14,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:32:14,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:32:14,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:32:14,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:14,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:14,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:14,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:32:14,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:14,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-13 09:32:14,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:14,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:32:14,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:14,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:32:14,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 09:32:14,679 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:32:14,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343638871] [2020-10-13 09:32:14,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:32:14,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:32:14,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967541595] [2020-10-13 09:32:14,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:32:14,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:32:14,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:32:14,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:32:14,684 INFO L87 Difference]: Start difference. First operand 1002 states and 1542 transitions. Second operand 8 states. [2020-10-13 09:32:15,875 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-13 09:32:28,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:32:28,265 INFO L93 Difference]: Finished difference Result 2156 states and 3257 transitions. [2020-10-13 09:32:28,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 09:32:28,266 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 137 [2020-10-13 09:32:28,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:32:28,276 INFO L225 Difference]: With dead ends: 2156 [2020-10-13 09:32:28,276 INFO L226 Difference]: Without dead ends: 1006 [2020-10-13 09:32:28,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-10-13 09:32:28,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2020-10-13 09:32:28,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 1002. [2020-10-13 09:32:28,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-10-13 09:32:28,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1462 transitions. [2020-10-13 09:32:28,340 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1462 transitions. Word has length 137 [2020-10-13 09:32:28,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:32:28,344 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1462 transitions. [2020-10-13 09:32:28,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:32:28,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1462 transitions. [2020-10-13 09:32:28,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-13 09:32:28,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:32:28,349 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:32:28,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:32:28,350 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:32:28,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:32:28,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1967434272, now seen corresponding path program 1 times [2020-10-13 09:32:28,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:32:28,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605212504] [2020-10-13 09:32:28,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:32:28,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:28,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:28,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:29,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:32,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:32,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-13 09:32:32,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:32:32,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3619 [2020-10-13 09:32:32,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:32,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 09:32:32,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 09:32:32,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 09:32:32,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:32:32,821 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 38 [2020-10-13 09:32:33,009 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2020-10-13 09:32:33,186 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2020-10-13 09:32:33,401 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2020-10-13 09:32:33,662 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2020-10-13 09:32:33,831 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2020-10-13 09:32:34,010 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2020-10-13 09:32:34,162 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 34 [2020-10-13 09:32:34,317 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2020-10-13 09:32:34,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:32:34,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:34,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:34,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:34,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:32:34,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:34,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:32:34,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:34,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:32:34,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:34,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:32:34,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:32:34,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:32:34,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:34,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:34,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:34,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:32:34,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:34,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 09:32:34,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:34,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:32:34,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:34,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 09:32:34,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:32:34,764 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:32:34,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605212504] [2020-10-13 09:32:34,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:32:34,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 09:32:34,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341332591] [2020-10-13 09:32:34,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 09:32:34,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:32:34,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 09:32:34,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=222, Unknown=0, NotChecked=0, Total=380 [2020-10-13 09:32:34,768 INFO L87 Difference]: Start difference. First operand 1002 states and 1462 transitions. Second operand 20 states. [2020-10-13 09:32:47,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:32:47,960 INFO L93 Difference]: Finished difference Result 2335 states and 3301 transitions. [2020-10-13 09:32:47,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 09:32:47,967 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 140 [2020-10-13 09:32:47,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:32:47,973 INFO L225 Difference]: With dead ends: 2335 [2020-10-13 09:32:47,973 INFO L226 Difference]: Without dead ends: 1006 [2020-10-13 09:32:47,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=478, Invalid=782, Unknown=0, NotChecked=0, Total=1260 [2020-10-13 09:32:47,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2020-10-13 09:32:48,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 1002. [2020-10-13 09:32:48,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-10-13 09:32:48,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1412 transitions. [2020-10-13 09:32:48,011 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1412 transitions. Word has length 140 [2020-10-13 09:32:48,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:32:48,012 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1412 transitions. [2020-10-13 09:32:48,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 09:32:48,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1412 transitions. [2020-10-13 09:32:48,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-13 09:32:48,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:32:48,020 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:32:48,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:32:48,021 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:32:48,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:32:48,023 INFO L82 PathProgramCache]: Analyzing trace with hash 967959260, now seen corresponding path program 1 times [2020-10-13 09:32:48,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:32:48,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961389846] [2020-10-13 09:32:48,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:32:48,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:48,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:48,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:48,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:50,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:50,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 09:32:50,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:32:50,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2513 [2020-10-13 09:32:50,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:50,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 09:32:50,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 09:32:50,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 09:32:50,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:32:51,012 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 38 [2020-10-13 09:32:51,171 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 34 [2020-10-13 09:32:51,300 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 31 [2020-10-13 09:32:51,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:32:51,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:51,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:51,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:51,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:32:51,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:51,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:32:51,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:51,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:32:51,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:51,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:32:51,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:32:51,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:32:51,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:51,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:51,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:51,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:32:51,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:51,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 09:32:51,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:51,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:32:51,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:51,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:32:51,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:32:51,735 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:32:51,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961389846] [2020-10-13 09:32:51,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:32:51,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 09:32:51,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725719085] [2020-10-13 09:32:51,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 09:32:51,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:32:51,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 09:32:51,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:32:51,740 INFO L87 Difference]: Start difference. First operand 1002 states and 1412 transitions. Second operand 11 states. [2020-10-13 09:32:59,341 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-10-13 09:32:59,498 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2020-10-13 09:32:59,890 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-10-13 09:33:00,081 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2020-10-13 09:33:00,288 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2020-10-13 09:33:10,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:33:10,835 INFO L93 Difference]: Finished difference Result 2060 states and 2888 transitions. [2020-10-13 09:33:10,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:33:10,836 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 142 [2020-10-13 09:33:10,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:33:10,842 INFO L225 Difference]: With dead ends: 2060 [2020-10-13 09:33:10,842 INFO L226 Difference]: Without dead ends: 1006 [2020-10-13 09:33:10,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=107, Invalid=199, Unknown=0, NotChecked=0, Total=306 [2020-10-13 09:33:10,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2020-10-13 09:33:10,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 1002. [2020-10-13 09:33:10,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-10-13 09:33:10,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1410 transitions. [2020-10-13 09:33:10,870 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1410 transitions. Word has length 142 [2020-10-13 09:33:10,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:33:10,870 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1410 transitions. [2020-10-13 09:33:10,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 09:33:10,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1410 transitions. [2020-10-13 09:33:10,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-13 09:33:10,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:33:10,873 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:33:10,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:33:10,873 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:33:10,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:33:10,874 INFO L82 PathProgramCache]: Analyzing trace with hash 2066398404, now seen corresponding path program 1 times [2020-10-13 09:33:10,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:33:10,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222890761] [2020-10-13 09:33:10,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:33:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:10,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:11,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:11,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:12,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:12,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-13 09:33:12,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:33:12,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1225 [2020-10-13 09:33:12,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:12,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:33:12,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 09:33:12,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 09:33:12,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:12,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:33:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:12,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:12,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:12,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:33:12,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:12,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:33:12,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:12,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:33:12,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:12,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:33:12,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:12,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:33:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:12,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:12,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:12,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:33:12,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:12,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 09:33:12,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:12,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:33:12,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:12,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:33:12,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:12,452 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:33:12,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222890761] [2020-10-13 09:33:12,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:33:12,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:33:12,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754458202] [2020-10-13 09:33:12,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:33:12,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:33:12,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:33:12,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:33:12,454 INFO L87 Difference]: Start difference. First operand 1002 states and 1410 transitions. Second operand 5 states. [2020-10-13 09:33:21,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:33:21,046 INFO L93 Difference]: Finished difference Result 2049 states and 2873 transitions. [2020-10-13 09:33:21,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:33:21,047 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-13 09:33:21,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:33:21,053 INFO L225 Difference]: With dead ends: 2049 [2020-10-13 09:33:21,054 INFO L226 Difference]: Without dead ends: 1006 [2020-10-13 09:33:21,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:33:21,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2020-10-13 09:33:21,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 1002. [2020-10-13 09:33:21,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-10-13 09:33:21,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1408 transitions. [2020-10-13 09:33:21,082 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1408 transitions. Word has length 145 [2020-10-13 09:33:21,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:33:21,082 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1408 transitions. [2020-10-13 09:33:21,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:33:21,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1408 transitions. [2020-10-13 09:33:21,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-13 09:33:21,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:33:21,085 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:33:21,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:33:21,085 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:33:21,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:33:21,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1215266612, now seen corresponding path program 1 times [2020-10-13 09:33:21,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:33:21,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281069243] [2020-10-13 09:33:21,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:33:21,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:21,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:21,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:21,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:33:21,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:21,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-13 09:33:21,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:21,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:33:21,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-13 09:33:21,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 09:33:21,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:21,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:33:21,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:21,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:21,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:21,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:33:21,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:21,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:33:21,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:21,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:33:21,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:21,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:33:21,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:21,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:33:21,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:21,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:21,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:21,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:33:21,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:21,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 09:33:21,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:21,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:33:21,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:21,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 09:33:21,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:33:21,617 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:33:21,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281069243] [2020-10-13 09:33:21,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:33:21,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:33:21,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596435057] [2020-10-13 09:33:21,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:33:21,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:33:21,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:33:21,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:33:21,623 INFO L87 Difference]: Start difference. First operand 1002 states and 1408 transitions. Second operand 6 states. [2020-10-13 09:33:32,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:33:32,057 INFO L93 Difference]: Finished difference Result 2891 states and 4086 transitions. [2020-10-13 09:33:32,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:33:32,058 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2020-10-13 09:33:32,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:33:32,068 INFO L225 Difference]: With dead ends: 2891 [2020-10-13 09:33:32,068 INFO L226 Difference]: Without dead ends: 1895 [2020-10-13 09:33:32,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:33:32,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1895 states. [2020-10-13 09:33:32,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1895 to 1891. [2020-10-13 09:33:32,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1891 states. [2020-10-13 09:33:32,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 2652 transitions. [2020-10-13 09:33:32,121 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 2652 transitions. Word has length 153 [2020-10-13 09:33:32,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:33:32,122 INFO L479 AbstractCegarLoop]: Abstraction has 1891 states and 2652 transitions. [2020-10-13 09:33:32,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:33:32,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 2652 transitions. [2020-10-13 09:33:32,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-13 09:33:32,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:33:32,125 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:33:32,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:33:32,125 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:33:32,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:33:32,126 INFO L82 PathProgramCache]: Analyzing trace with hash 121107584, now seen corresponding path program 1 times [2020-10-13 09:33:32,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:33:32,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633358336] [2020-10-13 09:33:32,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:33:32,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:32,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:32,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:33,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:33,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-13 09:33:33,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:33:33,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 866 [2020-10-13 09:33:33,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:33,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:33:33,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-13 09:33:33,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 09:33:33,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:33,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:33:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:33,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:33,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:33,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:33:33,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:33,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:33:33,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:33,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:33:33,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:33,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:33:33,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:33,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:33:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:33,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:33,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:33,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 09:33:33,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:33,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 09:33:33,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:33,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:33:33,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:33,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-13 09:33:33,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:33:33,341 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:33:33,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633358336] [2020-10-13 09:33:33,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:33:33,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:33:33,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007723199] [2020-10-13 09:33:33,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:33:33,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:33:33,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:33:33,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:33:33,345 INFO L87 Difference]: Start difference. First operand 1891 states and 2652 transitions. Second operand 5 states. [2020-10-13 09:33:43,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:33:43,799 INFO L93 Difference]: Finished difference Result 5116 states and 7326 transitions. [2020-10-13 09:33:43,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:33:43,804 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-13 09:33:43,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:33:43,815 INFO L225 Difference]: With dead ends: 5116 [2020-10-13 09:33:43,815 INFO L226 Difference]: Without dead ends: 3231 [2020-10-13 09:33:43,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:33:43,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3231 states. [2020-10-13 09:33:43,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3231 to 3224. [2020-10-13 09:33:43,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3224 states. [2020-10-13 09:33:43,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3224 states to 3224 states and 4165 transitions. [2020-10-13 09:33:43,900 INFO L78 Accepts]: Start accepts. Automaton has 3224 states and 4165 transitions. Word has length 163 [2020-10-13 09:33:43,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:33:43,901 INFO L479 AbstractCegarLoop]: Abstraction has 3224 states and 4165 transitions. [2020-10-13 09:33:43,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:33:43,901 INFO L276 IsEmpty]: Start isEmpty. Operand 3224 states and 4165 transitions. [2020-10-13 09:33:43,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-13 09:33:43,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:33:43,904 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:33:43,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:33:43,904 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:33:43,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:33:43,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1198983309, now seen corresponding path program 1 times [2020-10-13 09:33:43,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:33:43,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010329537] [2020-10-13 09:33:43,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:33:43,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:43,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:44,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:44,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:46,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:46,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:46,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-13 09:33:46,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:33:46,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2853 [2020-10-13 09:33:46,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:46,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 09:33:46,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:33:46,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 09:33:46,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:47,101 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 31 [2020-10-13 09:33:47,273 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 35 [2020-10-13 09:33:47,500 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2020-10-13 09:33:47,768 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 35 [2020-10-13 09:33:47,963 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2020-10-13 09:33:48,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:33:48,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:48,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:48,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:48,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:33:48,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:48,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:33:48,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:48,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:33:48,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:48,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:33:48,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:48,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:33:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:48,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:48,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:48,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 09:33:48,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:48,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-13 09:33:48,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:48,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:33:48,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:48,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 09:33:48,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:33:48,498 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:33:48,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010329537] [2020-10-13 09:33:48,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:33:48,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 09:33:48,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190535521] [2020-10-13 09:33:48,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 09:33:48,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:33:48,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 09:33:48,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:33:48,501 INFO L87 Difference]: Start difference. First operand 3224 states and 4165 transitions. Second operand 11 states. [2020-10-13 09:33:50,143 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-10-13 09:33:50,369 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2020-10-13 09:33:50,950 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-10-13 09:33:51,197 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2020-10-13 09:33:51,493 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2020-10-13 09:33:51,650 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2020-10-13 09:34:02,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:34:02,135 INFO L93 Difference]: Finished difference Result 6504 states and 8405 transitions. [2020-10-13 09:34:02,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:34:02,137 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 169 [2020-10-13 09:34:02,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:34:02,149 INFO L225 Difference]: With dead ends: 6504 [2020-10-13 09:34:02,150 INFO L226 Difference]: Without dead ends: 3228 [2020-10-13 09:34:02,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=108, Invalid=198, Unknown=0, NotChecked=0, Total=306 [2020-10-13 09:34:02,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3228 states. [2020-10-13 09:34:02,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3228 to 3224. [2020-10-13 09:34:02,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3224 states. [2020-10-13 09:34:02,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3224 states to 3224 states and 4161 transitions. [2020-10-13 09:34:02,223 INFO L78 Accepts]: Start accepts. Automaton has 3224 states and 4161 transitions. Word has length 169 [2020-10-13 09:34:02,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:34:02,224 INFO L479 AbstractCegarLoop]: Abstraction has 3224 states and 4161 transitions. [2020-10-13 09:34:02,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 09:34:02,224 INFO L276 IsEmpty]: Start isEmpty. Operand 3224 states and 4161 transitions. [2020-10-13 09:34:02,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-13 09:34:02,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:34:02,227 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:34:02,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:34:02,228 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:34:02,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:34:02,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1740835480, now seen corresponding path program 1 times [2020-10-13 09:34:02,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:34:02,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299717933] [2020-10-13 09:34:02,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:34:02,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:02,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:02,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:03,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:03,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:03,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-13 09:34:03,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:34:03,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1636 [2020-10-13 09:34:03,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:03,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:34:03,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-13 09:34:03,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 09:34:03,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:04,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:34:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:04,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:04,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:04,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:34:04,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:04,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:34:04,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:04,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:34:04,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:04,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:34:04,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:34:04,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:34:04,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:04,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:04,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:04,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 09:34:04,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:04,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-13 09:34:04,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:04,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:34:04,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:04,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 09:34:04,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:04,418 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:34:04,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1299717933] [2020-10-13 09:34:04,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:34:04,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:34:04,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622096547] [2020-10-13 09:34:04,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:34:04,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:34:04,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:34:04,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:34:04,421 INFO L87 Difference]: Start difference. First operand 3224 states and 4161 transitions. Second operand 5 states. [2020-10-13 09:34:14,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:34:14,213 INFO L93 Difference]: Finished difference Result 6476 states and 8369 transitions. [2020-10-13 09:34:14,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:34:14,225 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 194 [2020-10-13 09:34:14,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:34:14,237 INFO L225 Difference]: With dead ends: 6476 [2020-10-13 09:34:14,238 INFO L226 Difference]: Without dead ends: 3228 [2020-10-13 09:34:14,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:34:14,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3228 states. [2020-10-13 09:34:14,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3228 to 3224. [2020-10-13 09:34:14,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3224 states. [2020-10-13 09:34:14,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3224 states to 3224 states and 4157 transitions. [2020-10-13 09:34:14,307 INFO L78 Accepts]: Start accepts. Automaton has 3224 states and 4157 transitions. Word has length 194 [2020-10-13 09:34:14,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:34:14,307 INFO L479 AbstractCegarLoop]: Abstraction has 3224 states and 4157 transitions. [2020-10-13 09:34:14,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:34:14,307 INFO L276 IsEmpty]: Start isEmpty. Operand 3224 states and 4157 transitions. [2020-10-13 09:34:14,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-13 09:34:14,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:34:14,311 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:34:14,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:34:14,311 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:34:14,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:34:14,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1473413807, now seen corresponding path program 1 times [2020-10-13 09:34:14,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:34:14,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123318925] [2020-10-13 09:34:14,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:34:14,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:14,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:14,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:15,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:15,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:15,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:16,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:16,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-13 09:34:16,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:34:16,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1953 [2020-10-13 09:34:16,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:16,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 09:34:16,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-13 09:34:16,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 09:34:16,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:16,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:34:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:16,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:16,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:16,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:34:16,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:16,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:34:16,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:16,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:34:16,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:16,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:34:16,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:16,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:34:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:16,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:16,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:16,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 09:34:16,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:16,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 09:34:16,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:16,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 09:34:16,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:16,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-13 09:34:16,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:16,683 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:34:16,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2123318925] [2020-10-13 09:34:16,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:34:16,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:34:16,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974358477] [2020-10-13 09:34:16,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:34:16,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:34:16,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:34:16,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:34:16,685 INFO L87 Difference]: Start difference. First operand 3224 states and 4157 transitions. Second operand 6 states. [2020-10-13 09:34:33,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:34:33,252 INFO L93 Difference]: Finished difference Result 8276 states and 11007 transitions. [2020-10-13 09:34:33,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:34:33,254 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 210 [2020-10-13 09:34:33,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:34:33,276 INFO L225 Difference]: With dead ends: 8276 [2020-10-13 09:34:33,276 INFO L226 Difference]: Without dead ends: 5002 [2020-10-13 09:34:33,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:34:33,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5002 states. [2020-10-13 09:34:33,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5002 to 4126. [2020-10-13 09:34:33,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4126 states. [2020-10-13 09:34:33,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4126 states to 4126 states and 5251 transitions. [2020-10-13 09:34:33,383 INFO L78 Accepts]: Start accepts. Automaton has 4126 states and 5251 transitions. Word has length 210 [2020-10-13 09:34:33,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:34:33,384 INFO L479 AbstractCegarLoop]: Abstraction has 4126 states and 5251 transitions. [2020-10-13 09:34:33,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:34:33,384 INFO L276 IsEmpty]: Start isEmpty. Operand 4126 states and 5251 transitions. [2020-10-13 09:34:33,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-13 09:34:33,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:34:33,389 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:34:33,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:34:33,389 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:34:33,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:34:33,390 INFO L82 PathProgramCache]: Analyzing trace with hash -307255665, now seen corresponding path program 1 times [2020-10-13 09:34:33,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:34:33,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960189504] [2020-10-13 09:34:33,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:34:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:33,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:33,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:34,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:34,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:34,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:34,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-13 09:34:34,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:34:34,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1391 [2020-10-13 09:34:34,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:34,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:34:34,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-13 09:34:34,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 09:34:34,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:34,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:34:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:34,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:34,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:34,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:34:34,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:34,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:34:34,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:34,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:34:34,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:34,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:34:34,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:34,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:34:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:35,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:35,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:35,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-13 09:34:35,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:35,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 09:34:35,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:35,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:34:35,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:35,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-13 09:34:35,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:35,190 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:34:35,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960189504] [2020-10-13 09:34:35,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:34:35,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:34:35,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350705154] [2020-10-13 09:34:35,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:34:35,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:34:35,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:34:35,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:34:35,192 INFO L87 Difference]: Start difference. First operand 4126 states and 5251 transitions. Second operand 5 states. [2020-10-13 09:34:45,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:34:45,240 INFO L93 Difference]: Finished difference Result 8272 states and 10551 transitions. [2020-10-13 09:34:45,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:34:45,244 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 220 [2020-10-13 09:34:45,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:34:45,257 INFO L225 Difference]: With dead ends: 8272 [2020-10-13 09:34:45,257 INFO L226 Difference]: Without dead ends: 4130 [2020-10-13 09:34:45,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:34:45,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4130 states. [2020-10-13 09:34:45,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4130 to 4126. [2020-10-13 09:34:45,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4126 states. [2020-10-13 09:34:45,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4126 states to 4126 states and 5245 transitions. [2020-10-13 09:34:45,339 INFO L78 Accepts]: Start accepts. Automaton has 4126 states and 5245 transitions. Word has length 220 [2020-10-13 09:34:45,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:34:45,339 INFO L479 AbstractCegarLoop]: Abstraction has 4126 states and 5245 transitions. [2020-10-13 09:34:45,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:34:45,340 INFO L276 IsEmpty]: Start isEmpty. Operand 4126 states and 5245 transitions. [2020-10-13 09:34:45,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-13 09:34:45,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:34:45,344 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:34:45,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:34:45,345 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:34:45,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:34:45,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1038047871, now seen corresponding path program 1 times [2020-10-13 09:34:45,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:34:45,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215932024] [2020-10-13 09:34:45,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:34:45,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:45,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:45,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:47,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:47,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:48,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:48,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:34:48,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:34:48,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3122 [2020-10-13 09:34:48,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:48,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:34:48,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-13 09:34:48,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:34:48,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:48,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:34:48,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:48,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:48,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:48,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:34:48,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:48,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:34:48,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:48,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:34:48,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:48,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:34:48,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:48,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:34:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:48,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:48,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:48,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:34:48,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:48,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 09:34:48,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:48,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:34:48,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:48,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:34:48,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:48,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:34:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:48,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:48,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:48,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 09:34:48,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:48,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 09:34:48,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:48,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:34:48,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:48,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:34:48,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:48,962 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-13 09:34:48,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215932024] [2020-10-13 09:34:48,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:34:48,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:34:48,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948471974] [2020-10-13 09:34:48,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:34:48,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:34:48,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:34:48,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:34:48,964 INFO L87 Difference]: Start difference. First operand 4126 states and 5245 transitions. Second operand 5 states. [2020-10-13 09:34:59,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:34:59,751 INFO L93 Difference]: Finished difference Result 8282 states and 10556 transitions. [2020-10-13 09:34:59,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:34:59,755 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 228 [2020-10-13 09:34:59,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:34:59,765 INFO L225 Difference]: With dead ends: 8282 [2020-10-13 09:34:59,765 INFO L226 Difference]: Without dead ends: 4130 [2020-10-13 09:34:59,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:34:59,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4130 states. [2020-10-13 09:34:59,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4130 to 4126. [2020-10-13 09:34:59,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4126 states. [2020-10-13 09:34:59,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4126 states to 4126 states and 5241 transitions. [2020-10-13 09:34:59,848 INFO L78 Accepts]: Start accepts. Automaton has 4126 states and 5241 transitions. Word has length 228 [2020-10-13 09:34:59,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:34:59,848 INFO L479 AbstractCegarLoop]: Abstraction has 4126 states and 5241 transitions. [2020-10-13 09:34:59,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:34:59,849 INFO L276 IsEmpty]: Start isEmpty. Operand 4126 states and 5241 transitions. [2020-10-13 09:34:59,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-13 09:34:59,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:34:59,854 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:34:59,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:34:59,855 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:34:59,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:34:59,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1568914877, now seen corresponding path program 1 times [2020-10-13 09:34:59,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:34:59,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085202155] [2020-10-13 09:34:59,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:34:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:59,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:00,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:00,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:01,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:01,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:01,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-13 09:35:01,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:35:01,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1828 [2020-10-13 09:35:01,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:01,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:35:01,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 176 [2020-10-13 09:35:01,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 09:35:01,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:01,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:35:01,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:01,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:01,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:01,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:35:01,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:01,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:35:01,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:01,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:35:01,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:01,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:35:01,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:01,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:35:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:01,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:02,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:02,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:35:02,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:02,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 09:35:02,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:02,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:35:02,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:02,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:35:02,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:02,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:35:02,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:02,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:02,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:02,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 09:35:02,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:02,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 09:35:02,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:02,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:35:02,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:02,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 09:35:02,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:02,173 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-13 09:35:02,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085202155] [2020-10-13 09:35:02,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:35:02,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:35:02,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989940550] [2020-10-13 09:35:02,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:35:02,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:35:02,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:35:02,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:35:02,176 INFO L87 Difference]: Start difference. First operand 4126 states and 5241 transitions. Second operand 5 states. [2020-10-13 09:35:11,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:35:11,505 INFO L93 Difference]: Finished difference Result 8273 states and 10527 transitions. [2020-10-13 09:35:11,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:35:11,509 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 230 [2020-10-13 09:35:11,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:35:11,518 INFO L225 Difference]: With dead ends: 8273 [2020-10-13 09:35:11,518 INFO L226 Difference]: Without dead ends: 4130 [2020-10-13 09:35:11,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:35:11,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4130 states. [2020-10-13 09:35:11,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4130 to 4126. [2020-10-13 09:35:11,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4126 states. [2020-10-13 09:35:11,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4126 states to 4126 states and 5239 transitions. [2020-10-13 09:35:11,593 INFO L78 Accepts]: Start accepts. Automaton has 4126 states and 5239 transitions. Word has length 230 [2020-10-13 09:35:11,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:35:11,594 INFO L479 AbstractCegarLoop]: Abstraction has 4126 states and 5239 transitions. [2020-10-13 09:35:11,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:35:11,594 INFO L276 IsEmpty]: Start isEmpty. Operand 4126 states and 5239 transitions. [2020-10-13 09:35:11,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-13 09:35:11,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:35:11,602 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:35:11,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:35:11,602 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:35:11,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:35:11,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1620148680, now seen corresponding path program 1 times [2020-10-13 09:35:11,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:35:11,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572418127] [2020-10-13 09:35:11,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:35:11,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:11,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:11,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:12,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:12,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:13,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:13,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-13 09:35:13,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:35:13,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1725 [2020-10-13 09:35:13,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:13,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:35:13,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 187 [2020-10-13 09:35:13,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 09:35:13,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:13,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:35:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:13,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:13,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:13,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:35:13,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:13,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:35:13,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:13,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:35:13,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:13,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:35:13,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:35:13,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:35:13,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:13,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:13,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:13,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:35:13,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:13,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:35:13,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:13,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:35:13,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:13,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:35:13,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:35:13,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:35:13,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:13,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:13,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:13,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 09:35:13,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:13,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-13 09:35:13,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:13,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:35:13,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:13,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 09:35:13,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 37 [2020-10-13 09:35:14,037 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 09:35:14,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572418127] [2020-10-13 09:35:14,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:35:14,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:35:14,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048607555] [2020-10-13 09:35:14,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:35:14,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:35:14,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:35:14,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:35:14,042 INFO L87 Difference]: Start difference. First operand 4126 states and 5239 transitions. Second operand 5 states. [2020-10-13 09:35:22,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:35:22,258 INFO L93 Difference]: Finished difference Result 8274 states and 10524 transitions. [2020-10-13 09:35:22,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:35:22,262 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 241 [2020-10-13 09:35:22,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:35:22,273 INFO L225 Difference]: With dead ends: 8274 [2020-10-13 09:35:22,273 INFO L226 Difference]: Without dead ends: 4130 [2020-10-13 09:35:22,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:35:22,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4130 states. [2020-10-13 09:35:22,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4130 to 4126. [2020-10-13 09:35:22,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4126 states. [2020-10-13 09:35:22,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4126 states to 4126 states and 5237 transitions. [2020-10-13 09:35:22,349 INFO L78 Accepts]: Start accepts. Automaton has 4126 states and 5237 transitions. Word has length 241 [2020-10-13 09:35:22,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:35:22,349 INFO L479 AbstractCegarLoop]: Abstraction has 4126 states and 5237 transitions. [2020-10-13 09:35:22,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:35:22,350 INFO L276 IsEmpty]: Start isEmpty. Operand 4126 states and 5237 transitions. [2020-10-13 09:35:22,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-13 09:35:22,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:35:22,356 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:35:22,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:35:22,356 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:35:22,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:35:22,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1426197511, now seen corresponding path program 1 times [2020-10-13 09:35:22,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:35:22,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806835883] [2020-10-13 09:35:22,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:35:22,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:22,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:22,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:23,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:23,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:23,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-13 09:35:23,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:35:23,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1416 [2020-10-13 09:35:23,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:23,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:35:23,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 194 [2020-10-13 09:35:23,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 09:35:23,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:24,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:35:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:24,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:24,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:24,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:35:24,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:24,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:35:24,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:24,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:35:24,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:24,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:35:24,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:24,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:35:24,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:24,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:24,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:24,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:35:24,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:24,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 09:35:24,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:24,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:35:24,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:24,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:35:24,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:24,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:35:24,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:24,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:24,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:24,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:35:24,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:24,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 09:35:24,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:24,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:35:24,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:24,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 09:35:24,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:24,224 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 09:35:24,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806835883] [2020-10-13 09:35:24,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:35:24,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:35:24,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105051879] [2020-10-13 09:35:24,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:35:24,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:35:24,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:35:24,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:35:24,226 INFO L87 Difference]: Start difference. First operand 4126 states and 5237 transitions. Second operand 5 states. [2020-10-13 09:35:36,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:35:36,212 INFO L93 Difference]: Finished difference Result 8272 states and 10519 transitions. [2020-10-13 09:35:36,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:35:36,215 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 248 [2020-10-13 09:35:36,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:35:36,231 INFO L225 Difference]: With dead ends: 8272 [2020-10-13 09:35:36,231 INFO L226 Difference]: Without dead ends: 4130 [2020-10-13 09:35:36,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:35:36,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4130 states. [2020-10-13 09:35:36,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4130 to 4126. [2020-10-13 09:35:36,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4126 states. [2020-10-13 09:35:36,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4126 states to 4126 states and 5234 transitions. [2020-10-13 09:35:36,316 INFO L78 Accepts]: Start accepts. Automaton has 4126 states and 5234 transitions. Word has length 248 [2020-10-13 09:35:36,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:35:36,317 INFO L479 AbstractCegarLoop]: Abstraction has 4126 states and 5234 transitions. [2020-10-13 09:35:36,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:35:36,317 INFO L276 IsEmpty]: Start isEmpty. Operand 4126 states and 5234 transitions. [2020-10-13 09:35:36,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-13 09:35:36,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:35:36,327 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:35:36,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:35:36,327 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:35:36,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:35:36,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1230762552, now seen corresponding path program 1 times [2020-10-13 09:35:36,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:35:36,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186495346] [2020-10-13 09:35:36,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:35:36,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:36,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:36,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:36,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:37,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:37,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:37,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:37,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-13 09:35:37,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:35:37,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1517 [2020-10-13 09:35:37,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:37,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:35:37,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-13 09:35:37,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:35:37,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:37,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:35:37,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:37,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:37,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:37,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:35:37,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:37,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:35:37,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:37,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:35:37,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:37,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:35:37,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:38,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:35:38,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:38,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:38,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:38,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:35:38,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:38,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 09:35:38,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:38,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:35:38,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:38,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:35:38,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:38,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:35:38,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:38,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:38,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:38,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 09:35:38,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:38,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 09:35:38,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:38,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:35:38,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 09:35:38,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:35:38,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:38,167 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 09:35:38,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186495346] [2020-10-13 09:35:38,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:35:38,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 09:35:38,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138803150] [2020-10-13 09:35:38,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:35:38,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:35:38,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:35:38,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:35:38,170 INFO L87 Difference]: Start difference. First operand 4126 states and 5234 transitions. Second operand 5 states.