/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 SingleStatement --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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_20-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:07:45,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:07:45,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:07:45,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:07:45,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:07:45,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:07:45,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:07:45,692 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:07:45,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:07:45,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:07:45,699 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:07:45,701 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:07:45,701 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:07:45,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:07:45,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:07:45,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:07:45,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:07:45,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:07:45,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:07:45,720 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:07:45,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:07:45,722 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:07:45,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:07:45,724 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:07:45,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:07:45,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:07:45,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:07:45,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:07:45,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:07:45,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:07:45,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:07:45,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:07:45,730 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:07:45,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:07:45,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:07:45,732 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:07:45,733 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:07:45,733 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:07:45,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:07:45,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:07:45,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:07:45,736 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 [2020-09-25 11:07:45,760 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:07:45,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:07:45,762 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:07:45,762 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:07:45,762 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:07:45,763 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:07:45,763 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:07:45,763 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:07:45,763 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:07:45,763 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:07:45,764 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:07:45,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:07:45,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:07:45,764 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:07:45,764 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:07:45,765 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:07:45,765 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:07:45,765 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:07:45,765 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:07:45,766 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:07:45,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:07:45,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:07:45,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:07:45,766 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:07:45,767 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:07:45,767 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:07:45,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:07:45,767 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:07:45,767 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:07:45,768 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 -> SingleStatement 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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:07:46,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:07:46,218 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:07:46,223 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:07:46,224 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:07:46,225 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:07:46,226 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_20-2.c [2020-09-25 11:07:46,302 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c504cf02/05f97b9bbfab4c1b9dd6e078d8551755/FLAG5859bc40a [2020-09-25 11:07:46,813 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:07:46,814 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_20-2.c [2020-09-25 11:07:46,822 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c504cf02/05f97b9bbfab4c1b9dd6e078d8551755/FLAG5859bc40a [2020-09-25 11:07:47,151 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c504cf02/05f97b9bbfab4c1b9dd6e078d8551755 [2020-09-25 11:07:47,165 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:07:47,171 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:07:47,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:07:47,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:07:47,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:07:47,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:07:47" (1/1) ... [2020-09-25 11:07:47,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@634f0049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:47, skipping insertion in model container [2020-09-25 11:07:47,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:07:47" (1/1) ... [2020-09-25 11:07:47,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:07:47,218 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:07:47,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:07:47,518 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:07:47,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:07:47,556 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:07:47,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:47 WrapperNode [2020-09-25 11:07:47,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:07:47,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:07:47,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:07:47,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:07:47,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:47" (1/1) ... [2020-09-25 11:07:47,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:47" (1/1) ... [2020-09-25 11:07:47,576 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:47" (1/1) ... [2020-09-25 11:07:47,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:47" (1/1) ... [2020-09-25 11:07:47,659 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:47" (1/1) ... [2020-09-25 11:07:47,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:47" (1/1) ... [2020-09-25 11:07:47,664 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:47" (1/1) ... [2020-09-25 11:07:47,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:07:47,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:07:47,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:07:47,670 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:07:47,671 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:47" (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 [2020-09-25 11:07:47,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:07:47,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:07:47,744 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 11:07:47,744 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 11:07:47,744 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:07:47,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:07:47,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:07:47,745 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 11:07:47,745 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 11:07:47,745 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:07:47,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:07:47,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:07:47,981 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:07:47,981 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 11:07:47,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:07:47 BoogieIcfgContainer [2020-09-25 11:07:47,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:07:47,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:07:47,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:07:47,992 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:07:47,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:07:47" (1/3) ... [2020-09-25 11:07:47,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c2aeb4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:07:47, skipping insertion in model container [2020-09-25 11:07:47,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:47" (2/3) ... [2020-09-25 11:07:47,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c2aeb4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:07:47, skipping insertion in model container [2020-09-25 11:07:47,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:07:47" (3/3) ... [2020-09-25 11:07:47,997 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_20-2.c [2020-09-25 11:07:48,008 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:07:48,018 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:07:48,039 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:07:48,068 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:07:48,068 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:07:48,068 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:07:48,068 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:07:48,068 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:07:48,068 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:07:48,069 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:07:48,069 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:07:48,092 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 11:07:48,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 11:07:48,100 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:48,101 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:07:48,102 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:48,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:48,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 11:07:48,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:48,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050942452] [2020-09-25 11:07:48,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:48,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:48,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:48,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:07:48,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:48,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 11:07:48,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:48,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:48,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:07:48,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:48,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:07:48,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 11:07:48,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:48,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:48,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:48,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:48,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:48,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:48,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:07:48,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:48,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:48,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:48,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:48,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:48,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:48,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:48,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:48,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:48,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:48,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:48,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 11:07:48,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:48,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:48,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:07:48,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:48,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:48,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:48,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:07:48,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050942452] [2020-09-25 11:07:48,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:07:48,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:07:48,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549333943] [2020-09-25 11:07:48,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:07:48,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:48,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:07:48,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:07:48,496 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 11:07:48,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:48,619 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 11:07:48,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:07:48,622 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 11:07:48,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:48,637 INFO L225 Difference]: With dead ends: 58 [2020-09-25 11:07:48,637 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 11:07:48,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:07:48,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 11:07:48,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 11:07:48,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 11:07:48,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 11:07:48,726 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 11:07:48,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:48,727 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 11:07:48,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:07:48,727 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 11:07:48,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 11:07:48,730 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:48,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:07:48,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:07:48,731 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:48,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:48,731 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 11:07:48,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:48,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069047719] [2020-09-25 11:07:48,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:48,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:48,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:48,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 11:07:48,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:48,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 11:07:48,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:48,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:48,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:07:48,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:48,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:48,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:48,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:48,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:48,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:48,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:48,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:48,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:07:48,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:48,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:48,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:48,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:48,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:48,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:48,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:48,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:48,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:48,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:48,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:48,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:48,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 11:07:48,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:48,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:48,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:07:48,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:48,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:48,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:48,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:07:48,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069047719] [2020-09-25 11:07:48,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:07:48,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:07:48,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141658076] [2020-09-25 11:07:48,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:07:48,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:48,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:07:48,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:07:48,923 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 11:07:49,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:49,033 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 11:07:49,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:07:49,035 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 11:07:49,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:49,036 INFO L225 Difference]: With dead ends: 50 [2020-09-25 11:07:49,036 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 11:07:49,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:07:49,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 11:07:49,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 11:07:49,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 11:07:49,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 11:07:49,048 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 11:07:49,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:49,048 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 11:07:49,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:07:49,049 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 11:07:49,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 11:07:49,050 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:49,051 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 11:07:49,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:07:49,051 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:49,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:49,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 11:07:49,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:49,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659170174] [2020-09-25 11:07:49,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:49,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:49,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:49,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:49,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:49,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 11:07:49,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:07:49,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 629 [2020-09-25 11:07:49,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:49,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:49,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:49,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:49,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 11:07:49,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:07:49,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:49,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:49,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:49,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:49,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:49,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:07:49,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:49,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:49,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:49,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:49,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:49,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:49,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:49,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:49,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:49,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:50,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:50,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:07:50,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:07:50,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-09-25 11:07:50,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:50,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:50,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:50,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:50,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:07:50,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:50,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:50,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:50,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:50,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:50,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:50,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:50,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:07:50,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:50,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:50,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:50,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:50,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:50,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:50,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:07:50,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:50,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:50,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:50,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:50,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:50,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 11:07:50,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:50,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:50,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:50,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:50,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:50,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:50,119 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:07:50,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659170174] [2020-09-25 11:07:50,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:07:50,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:07:50,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029163656] [2020-09-25 11:07:50,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:07:50,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:50,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:07:50,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:07:50,122 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 11:07:50,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:50,290 INFO L93 Difference]: Finished difference Result 69 states and 87 transitions. [2020-09-25 11:07:50,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 11:07:50,290 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 11:07:50,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:50,293 INFO L225 Difference]: With dead ends: 69 [2020-09-25 11:07:50,293 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 11:07:50,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:07:50,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 11:07:50,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2020-09-25 11:07:50,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 11:07:50,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 76 transitions. [2020-09-25 11:07:50,310 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 76 transitions. Word has length 33 [2020-09-25 11:07:50,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:50,311 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 76 transitions. [2020-09-25 11:07:50,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:07:50,311 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 76 transitions. [2020-09-25 11:07:50,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 11:07:50,313 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:50,314 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:07:50,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:07:50,314 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:50,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:50,315 INFO L82 PathProgramCache]: Analyzing trace with hash 887160861, now seen corresponding path program 1 times [2020-09-25 11:07:50,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:50,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802548996] [2020-09-25 11:07:50,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:50,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:50,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:50,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:50,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:50,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 11:07:50,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:07:50,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 400 [2020-09-25 11:07:50,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:50,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:50,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:50,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:50,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 11:07:50,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:50,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:50,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:50,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:50,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:50,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:50,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:07:50,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:50,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:50,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:50,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:50,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:50,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:50,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:50,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:50,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:51,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:51,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:07:51,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:07:51,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-09-25 11:07:51,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:51,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:51,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:51,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:51,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 11:07:51,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:51,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:51,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:51,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:51,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:51,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:51,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:07:51,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:51,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:51,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:51,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:51,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:51,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:51,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:07:51,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:51,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:51,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:51,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:51,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:51,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:07:51,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:51,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:51,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:51,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:51,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:51,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:51,141 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:07:51,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802548996] [2020-09-25 11:07:51,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:07:51,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:07:51,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46800085] [2020-09-25 11:07:51,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:07:51,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:51,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:07:51,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:07:51,145 INFO L87 Difference]: Start difference. First operand 61 states and 76 transitions. Second operand 7 states. [2020-09-25 11:07:51,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:51,314 INFO L93 Difference]: Finished difference Result 73 states and 91 transitions. [2020-09-25 11:07:51,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 11:07:51,315 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-09-25 11:07:51,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:51,317 INFO L225 Difference]: With dead ends: 73 [2020-09-25 11:07:51,317 INFO L226 Difference]: Without dead ends: 67 [2020-09-25 11:07:51,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:07:51,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-25 11:07:51,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 61. [2020-09-25 11:07:51,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 11:07:51,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 76 transitions. [2020-09-25 11:07:51,330 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 76 transitions. Word has length 34 [2020-09-25 11:07:51,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:51,331 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 76 transitions. [2020-09-25 11:07:51,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:07:51,331 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 76 transitions. [2020-09-25 11:07:51,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 11:07:51,333 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:51,333 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 11:07:51,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:07:51,334 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:51,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:51,335 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 11:07:51,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:51,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415658627] [2020-09-25 11:07:51,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:51,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:51,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:51,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:51,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:51,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:51,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:51,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 11:07:51,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:07:51,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 515 [2020-09-25 11:07:51,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:51,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:51,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:51,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:51,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 11:07:51,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:51,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:51,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:51,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:51,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:51,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:51,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:51,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:07:51,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:51,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:51,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:51,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:51,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:51,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:51,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:51,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:51,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:51,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:52,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:52,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:52,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:52,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:07:52,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:07:52,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 459 [2020-09-25 11:07:52,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:52,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:52,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:52,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:52,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 11:07:52,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:52,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:52,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:52,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:52,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:52,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:52,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:52,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 11:07:52,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:52,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:52,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:52,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:52,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:07:52,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:07:52,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:07:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:52,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:52,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:52,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:52,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:52,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:07:52,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:52,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:52,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:52,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:52,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:52,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:52,459 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:07:52,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415658627] [2020-09-25 11:07:52,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:07:52,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:07:52,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888968684] [2020-09-25 11:07:52,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:07:52,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:52,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:07:52,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:07:52,461 INFO L87 Difference]: Start difference. First operand 61 states and 76 transitions. Second operand 7 states. [2020-09-25 11:07:52,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:52,571 INFO L93 Difference]: Finished difference Result 134 states and 187 transitions. [2020-09-25 11:07:52,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:07:52,572 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 11:07:52,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:52,574 INFO L225 Difference]: With dead ends: 134 [2020-09-25 11:07:52,574 INFO L226 Difference]: Without dead ends: 79 [2020-09-25 11:07:52,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:07:52,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-25 11:07:52,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 67. [2020-09-25 11:07:52,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-25 11:07:52,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2020-09-25 11:07:52,588 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 35 [2020-09-25 11:07:52,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:52,588 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2020-09-25 11:07:52,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:07:52,589 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2020-09-25 11:07:52,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 11:07:52,591 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:52,591 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-25 11:07:52,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:07:52,592 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:52,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:52,592 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 11:07:52,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:52,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300503755] [2020-09-25 11:07:52,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:52,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:52,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:52,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:52,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:52,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:52,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:52,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:53,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:57,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:57,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 11:07:57,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:07:57,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 11:07:57,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:57,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:57,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:57,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:57,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 11:07:57,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 11:07:57,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:57,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:57,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:57,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:57,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:57,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:57,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:07:57,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:57,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:57,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:57,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:57,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:57,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:57,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:57,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:57,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:57,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:57,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:58,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:58,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:59,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:01,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:01,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 11:08:01,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:08:01,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3616 [2020-09-25 11:08:01,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:01,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:01,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:08:01,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:08:01,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 11:08:01,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:01,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:01,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:01,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:01,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:01,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:08:01,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:08:01,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 11:08:01,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:01,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:01,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:01,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:01,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:08:01,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:01,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:01,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:01,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:01,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:01,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:01,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:01,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:08:01,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:01,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:01,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:01,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:01,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:01,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:01,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:08:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:01,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:01,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:01,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:01,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:01,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:08:01,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:01,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:01,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:01,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:01,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:01,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:01,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:08:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:01,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:01,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:01,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:08:01,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:01,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 11:08:01,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:01,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:01,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:08:01,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:01,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:08:01,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:01,509 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 11:08:01,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300503755] [2020-09-25 11:08:01,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:08:01,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:08:01,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008050769] [2020-09-25 11:08:01,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:08:01,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:08:01,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:08:01,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:08:01,513 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand 7 states. [2020-09-25 11:08:01,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:08:01,642 INFO L93 Difference]: Finished difference Result 85 states and 109 transitions. [2020-09-25 11:08:01,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:08:01,643 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 11:08:01,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:08:01,644 INFO L225 Difference]: With dead ends: 85 [2020-09-25 11:08:01,645 INFO L226 Difference]: Without dead ends: 79 [2020-09-25 11:08:01,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:08:01,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-25 11:08:01,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 67. [2020-09-25 11:08:01,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-25 11:08:01,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2020-09-25 11:08:01,660 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 51 [2020-09-25 11:08:01,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:08:01,661 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2020-09-25 11:08:01,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:08:01,661 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2020-09-25 11:08:01,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 11:08:01,666 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:08:01,666 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:08:01,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:08:01,671 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:08:01,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:08:01,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 11:08:01,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:08:01,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775565288] [2020-09-25 11:08:01,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:08:01,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:01,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:01,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:01,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:01,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:02,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:02,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:02,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:02,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:02,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:02,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:06,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:06,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 11:08:06,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 11:08:06,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 11:08:06,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:06,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:06,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:08:06,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:08:06,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 11:08:06,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:06,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:08:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:06,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:06,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:06,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:08:06,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:06,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:08:06,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:06,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:06,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:06,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:06,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:06,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:06,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:08:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:06,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:06,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:06,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:06,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:06,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:06,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:06,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:07,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:07,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:11,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:11,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:11,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:11,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 11:08:11,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 11:08:11,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 11:08:11,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:11,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:11,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:08:11,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:08:11,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 11:08:11,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:11,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:11,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:11,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:11,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:11,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:11,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:11,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:08:11,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:08:11,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-09-25 11:08:11,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:11,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:11,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:08:11,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:11,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 11:08:11,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:12,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:12,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:12,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:12,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:12,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:12,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:12,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:08:12,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:12,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:12,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:08:12,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:12,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:08:12,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:12,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:08:12,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:12,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:12,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:12,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:12,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:12,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:08:12,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:12,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:12,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:12,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:12,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:08:12,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:12,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:08:12,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:12,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:12,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:12,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:12,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:08:12,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:08:12,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 11:08:12,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:12,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:12,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:12,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:12,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:08:12,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:12,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:12,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:12,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:12,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:12,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:12,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:08:12,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:12,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:12,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:12,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:12,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:12,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:12,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:08:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:12,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:12,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:12,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:12,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:12,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:08:12,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:12,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:12,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:12,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:12,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:12,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:12,147 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 11:08:12,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775565288] [2020-09-25 11:08:12,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:08:12,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:08:12,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995426553] [2020-09-25 11:08:12,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:08:12,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:08:12,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:08:12,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:08:12,150 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand 8 states. [2020-09-25 11:08:12,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:08:12,284 INFO L93 Difference]: Finished difference Result 99 states and 137 transitions. [2020-09-25 11:08:12,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 11:08:12,284 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-09-25 11:08:12,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:08:12,287 INFO L225 Difference]: With dead ends: 99 [2020-09-25 11:08:12,287 INFO L226 Difference]: Without dead ends: 93 [2020-09-25 11:08:12,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:08:12,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-25 11:08:12,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 85. [2020-09-25 11:08:12,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-25 11:08:12,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 118 transitions. [2020-09-25 11:08:12,302 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 118 transitions. Word has length 67 [2020-09-25 11:08:12,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:08:12,303 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 118 transitions. [2020-09-25 11:08:12,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:08:12,303 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 118 transitions. [2020-09-25 11:08:12,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 11:08:12,305 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:08:12,305 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:08:12,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 11:08:12,305 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:08:12,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:08:12,306 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-25 11:08:12,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:08:12,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378867098] [2020-09-25 11:08:12,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:08:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:12,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:12,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:12,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:12,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:12,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:12,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:12,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:13,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:14,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:15,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:16,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:16,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:16,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:17,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:17,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 11:08:17,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 11:08:17,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 11:08:17,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:17,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:17,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:08:17,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:08:17,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 11:08:17,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:17,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:08:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:17,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:17,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:17,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:08:17,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:17,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:08:17,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:17,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:17,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:17,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:17,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:17,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:17,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:08:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:17,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:17,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:17,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:17,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:17,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:17,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:17,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:20,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:20,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:22,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:22,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 11:08:22,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:08:22,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:08:22,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:22,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:22,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:08:22,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 11:08:22,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 11:08:22,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:22,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:22,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:22,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:22,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:22,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:22,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:22,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:08:22,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:08:22,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 383 [2020-09-25 11:08:22,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:22,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:22,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:08:22,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:22,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 11:08:22,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:22,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:22,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:22,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:22,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:08:22,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:22,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 11:08:22,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:22,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:22,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:08:22,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:22,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:08:22,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:22,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:08:22,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:22,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:22,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:22,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:22,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:22,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:08:22,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:22,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:22,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:22,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:22,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:08:22,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:22,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:08:22,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:22,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:22,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:22,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:23,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:23,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:08:23,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:08:23,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-09-25 11:08:23,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:23,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:23,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:08:23,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:08:23,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 11:08:23,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:23,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:23,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:23,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:23,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:08:23,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:23,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:08:23,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:23,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:23,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:23,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:23,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:08:23,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:23,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:08:23,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:23,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:23,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:23,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:23,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:23,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:08:23,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:23,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:23,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:23,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:23,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:08:23,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:23,161 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 10 proven. 22 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-09-25 11:08:23,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378867098] [2020-09-25 11:08:23,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:08:23,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:08:23,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658540158] [2020-09-25 11:08:23,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:08:23,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:08:23,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:08:23,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:08:23,164 INFO L87 Difference]: Start difference. First operand 85 states and 118 transitions. Second operand 10 states. [2020-09-25 11:08:23,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:08:23,405 INFO L93 Difference]: Finished difference Result 192 states and 314 transitions. [2020-09-25 11:08:23,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 11:08:23,405 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 69 [2020-09-25 11:08:23,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:08:23,407 INFO L225 Difference]: With dead ends: 192 [2020-09-25 11:08:23,408 INFO L226 Difference]: Without dead ends: 113 [2020-09-25 11:08:23,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-09-25 11:08:23,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-09-25 11:08:23,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 105. [2020-09-25 11:08:23,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-09-25 11:08:23,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 158 transitions. [2020-09-25 11:08:23,424 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 158 transitions. Word has length 69 [2020-09-25 11:08:23,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:08:23,425 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 158 transitions. [2020-09-25 11:08:23,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:08:23,425 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 158 transitions. [2020-09-25 11:08:23,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 11:08:23,427 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:08:23,427 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:08:23,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 11:08:23,428 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:08:23,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:08:23,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1523115787, now seen corresponding path program 1 times [2020-09-25 11:08:23,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:08:23,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72011890] [2020-09-25 11:08:23,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:08:23,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:23,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:23,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:23,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:23,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:23,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:23,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:25,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:25,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:25,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:25,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:25,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:25,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:26,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:26,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:26,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:26,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:27,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:27,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:27,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:27,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:27,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:28,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:28,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 11:08:28,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-09-25 11:08:28,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 11:08:28,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:28,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:28,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:08:28,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:08:28,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 11:08:28,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:08:28,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:08:28,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:28,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:28,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:28,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:08:28,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:28,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:08:28,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:28,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:28,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:28,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:28,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:28,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:28,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:08:28,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:28,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:28,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:28,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:28,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:28,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:28,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:28,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:28,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:28,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:29,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:31,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:33,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:33,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 11:08:33,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 11:08:33,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 11:08:33,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:33,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:33,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:08:33,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 11:08:33,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 11:08:33,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:33,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:33,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:33,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:33,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:33,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:33,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:33,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:33,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:34,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:34,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 11:08:34,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:08:34,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 990 [2020-09-25 11:08:34,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:34,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:34,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:08:34,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:34,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 11:08:34,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:34,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:34,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:34,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:34,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:34,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:08:34,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:08:34,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 11:08:34,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:34,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:34,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:34,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:34,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:08:34,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:34,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:34,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:34,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:34,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:34,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:34,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:34,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:08:34,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:34,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:34,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:34,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:34,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:34,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:34,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:08:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:34,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:34,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:34,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:34,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:34,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:08:34,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:34,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:34,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:34,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:34,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:34,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:34,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:08:34,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:34,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:34,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:34,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:34,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:34,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:08:34,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:34,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:34,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:08:34,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:34,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:08:34,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:34,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 11:08:34,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:34,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:34,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:34,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:34,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:34,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:08:34,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:08:34,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-25 11:08:34,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:34,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:34,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:08:34,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:08:34,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 11:08:34,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:34,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:34,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:34,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:34,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:34,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:08:34,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:34,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:08:34,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:34,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:34,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:34,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:34,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:08:34,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:34,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:08:34,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:34,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:34,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:34,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:34,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:34,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:08:34,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:34,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:34,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:34,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:34,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:08:34,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:34,894 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 20 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-25 11:08:34,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72011890] [2020-09-25 11:08:34,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:08:34,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:08:34,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717305995] [2020-09-25 11:08:34,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:08:34,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:08:34,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:08:34,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:08:34,897 INFO L87 Difference]: Start difference. First operand 105 states and 158 transitions. Second operand 11 states. [2020-09-25 11:08:35,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:08:35,295 INFO L93 Difference]: Finished difference Result 228 states and 375 transitions. [2020-09-25 11:08:35,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:08:35,296 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 85 [2020-09-25 11:08:35,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:08:35,298 INFO L225 Difference]: With dead ends: 228 [2020-09-25 11:08:35,299 INFO L226 Difference]: Without dead ends: 111 [2020-09-25 11:08:35,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2020-09-25 11:08:35,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-09-25 11:08:35,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2020-09-25 11:08:35,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-09-25 11:08:35,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 124 transitions. [2020-09-25 11:08:35,312 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 124 transitions. Word has length 85 [2020-09-25 11:08:35,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:08:35,312 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 124 transitions. [2020-09-25 11:08:35,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:08:35,313 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 124 transitions. [2020-09-25 11:08:35,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 11:08:35,314 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:08:35,314 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:08:35,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 11:08:35,315 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:08:35,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:08:35,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1957044445, now seen corresponding path program 1 times [2020-09-25 11:08:35,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:08:35,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819645517] [2020-09-25 11:08:35,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:08:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:35,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:35,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:35,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:35,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:35,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:35,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:35,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:36,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:36,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:36,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:36,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:36,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:37,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:37,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:38,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:38,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:39,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:39,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:40,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:40,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-25 11:08:40,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-25 11:08:40,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 11:08:40,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:40,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:40,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:08:40,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 11:08:40,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 11:08:40,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:40,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:08:40,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:40,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:40,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:40,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:08:40,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:40,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:08:40,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:40,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:40,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:40,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:40,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:40,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:40,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:08:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:40,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:40,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:40,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:40,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:40,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:40,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:41,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:41,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:41,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:41,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:41,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:41,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking...