/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_8-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:07:55,041 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:07:55,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:07:55,071 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:07:55,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:07:55,073 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:07:55,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:07:55,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:07:55,078 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:07:55,079 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:07:55,080 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:07:55,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:07:55,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:07:55,083 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:07:55,084 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:07:55,085 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:07:55,086 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:07:55,087 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:07:55,089 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:07:55,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:07:55,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:07:55,094 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:07:55,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:07:55,097 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:07:55,099 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:07:55,100 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:07:55,100 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:07:55,101 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:07:55,101 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:07:55,102 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:07:55,103 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:07:55,104 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:07:55,105 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:07:55,106 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:07:55,107 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:07:55,107 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:07:55,108 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:07:55,108 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:07:55,109 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:07:55,110 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:07:55,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:07:55,111 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 11:07:55,138 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:07:55,139 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:07:55,140 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:07:55,140 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:07:55,140 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:07:55,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:07:55,141 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:07:55,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:07:55,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:07:55,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:07:55,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:07:55,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:07:55,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:07:55,142 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:07:55,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:07:55,143 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:07:55,143 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:07:55,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:07:55,143 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:07:55,144 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:07:55,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:07:55,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:07:55,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:07:55,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:07:55,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:07:55,150 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:07:55,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:07:55,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:07:55,151 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:07:55,151 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 11:07:55,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:07:55,660 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:07:55,665 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:07:55,667 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:07:55,667 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:07:55,668 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_8-1.c [2020-09-25 11:07:55,755 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b259646d/f25e1d3b5c6242fba358fd23d3c66504/FLAG1ed0e36c7 [2020-09-25 11:07:56,281 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:07:56,282 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_8-1.c [2020-09-25 11:07:56,292 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b259646d/f25e1d3b5c6242fba358fd23d3c66504/FLAG1ed0e36c7 [2020-09-25 11:07:56,633 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b259646d/f25e1d3b5c6242fba358fd23d3c66504 [2020-09-25 11:07:56,647 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:07:56,652 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:07:56,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:07:56,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:07:56,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:07:56,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:07:56" (1/1) ... [2020-09-25 11:07:56,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54535c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:56, skipping insertion in model container [2020-09-25 11:07:56,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:07:56" (1/1) ... [2020-09-25 11:07:56,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:07:56,706 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:07:56,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:07:56,925 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:07:56,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:07:56,965 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:07:56,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:56 WrapperNode [2020-09-25 11:07:56,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:07:56,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:07:56,967 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:07:56,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:07:56,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:56" (1/1) ... [2020-09-25 11:07:56,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:56" (1/1) ... [2020-09-25 11:07:56,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:56" (1/1) ... [2020-09-25 11:07:56,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:56" (1/1) ... [2020-09-25 11:07:57,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:56" (1/1) ... [2020-09-25 11:07:57,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:56" (1/1) ... [2020-09-25 11:07:57,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:56" (1/1) ... [2020-09-25 11:07:57,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:07:57,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:07:57,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:07:57,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:07:57,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:07:57,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:07:57,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:07:57,151 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 11:07:57,151 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 11:07:57,151 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:07:57,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:07:57,152 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:07:57,152 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 11:07:57,152 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 11:07:57,152 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:07:57,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:07:57,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:07:57,406 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:07:57,407 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 11:07:57,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:07:57 BoogieIcfgContainer [2020-09-25 11:07:57,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:07:57,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:07:57,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:07:57,450 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:07:57,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:07:56" (1/3) ... [2020-09-25 11:07:57,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57daf807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:07:57, skipping insertion in model container [2020-09-25 11:07:57,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:56" (2/3) ... [2020-09-25 11:07:57,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57daf807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:07:57, skipping insertion in model container [2020-09-25 11:07:57,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:07:57" (3/3) ... [2020-09-25 11:07:57,455 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-1.c [2020-09-25 11:07:57,480 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:07:57,503 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:07:57,537 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:07:57,568 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:07:57,568 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:07:57,568 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:07:57,568 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:07:57,569 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:07:57,569 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:07:57,569 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:07:57,569 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:07:57,591 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 11:07:57,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 11:07:57,599 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:57,601 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:07:57,601 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:57,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:57,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 11:07:57,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:57,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260513641] [2020-09-25 11:07:57,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:57,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:57,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:57,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:57,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:07:57,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:57,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 11:07:57,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:57,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:57,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:07:57,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:57,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:07:57,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 11:07:57,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:57,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:57,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:57,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:57,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:57,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:57,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:07:57,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:57,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:57,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:57,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:57,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:57,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:57,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:57,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:57,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:57,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:57,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:57,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:57,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 11:07:57,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:57,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:57,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:07:57,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:57,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:57,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:57,978 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 11:07:57,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260513641] [2020-09-25 11:07:57,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:07:57,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:07:57,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989108441] [2020-09-25 11:07:57,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:07:57,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:58,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:07:58,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:07:58,014 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 11:07:58,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:58,154 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 11:07:58,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:07:58,157 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 11:07:58,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:58,172 INFO L225 Difference]: With dead ends: 58 [2020-09-25 11:07:58,172 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 11:07:58,177 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 11:07:58,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 11:07:58,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 11:07:58,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 11:07:58,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 11:07:58,243 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 11:07:58,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:58,244 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 11:07:58,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:07:58,245 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 11:07:58,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 11:07:58,247 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:58,248 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 11:07:58,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:07:58,248 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:58,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:58,249 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 11:07:58,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:58,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806424447] [2020-09-25 11:07:58,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:58,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:58,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:58,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 11:07:58,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:58,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-25 11:07:58,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:58,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:58,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:07:58,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:58,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:58,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:07:58,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:58,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:58,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:58,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:58,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:58,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:07:58,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:58,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:58,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:58,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:58,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:58,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:58,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:58,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:58,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:58,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:58,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:58,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:58,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 11:07:58,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:58,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:58,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:07:58,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:58,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:58,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:58,516 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 11:07:58,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1806424447] [2020-09-25 11:07:58,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:07:58,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:07:58,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012342233] [2020-09-25 11:07:58,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:07:58,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:58,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:07:58,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:07:58,521 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 11:07:58,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:58,611 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 11:07:58,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:07:58,612 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 11:07:58,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:58,614 INFO L225 Difference]: With dead ends: 50 [2020-09-25 11:07:58,614 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 11:07:58,615 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 11:07:58,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 11:07:58,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 11:07:58,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 11:07:58,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 11:07:58,625 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 11:07:58,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:58,626 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 11:07:58,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:07:58,626 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 11:07:58,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 11:07:58,628 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:58,628 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 11:07:58,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:07:58,629 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:58,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:58,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 11:07:58,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:58,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951508373] [2020-09-25 11:07:58,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:58,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:58,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:58,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:58,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:59,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:59,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 11:07:59,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:07:59,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 660 [2020-09-25 11:07:59,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:59,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:59,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:59,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:59,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 11:07:59,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:07:59,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:59,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:59,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:59,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:59,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:59,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:59,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:07:59,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:59,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:59,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:59,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:59,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:59,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:59,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:59,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:59,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:59,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:59,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:59,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:59,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:07:59,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:07:59,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-09-25 11:07:59,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:59,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:59,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:59,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:59,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:07:59,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:59,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:59,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:59,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:59,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:59,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:59,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 11:07:59,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:59,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:59,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:59,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:59,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:59,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:59,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:07:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:59,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:59,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:59,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:59,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:59,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:07:59,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:59,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:59,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:59,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:59,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:59,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:59,742 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:07:59,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951508373] [2020-09-25 11:07:59,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:07:59,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:07:59,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284970265] [2020-09-25 11:07:59,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:07:59,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:59,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:07:59,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:07:59,751 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 11:07:59,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:59,888 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 11:07:59,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:07:59,889 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 11:07:59,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:59,891 INFO L225 Difference]: With dead ends: 58 [2020-09-25 11:07:59,892 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 11:07:59,893 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 11:07:59,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 11:07:59,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 11:07:59,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 11:07:59,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 11:07:59,904 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 11:07:59,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:59,905 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 11:07:59,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:07:59,905 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 11:07:59,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 11:07:59,911 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:59,912 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 11:07:59,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:07:59,912 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:59,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:59,913 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 11:07:59,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:59,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208680506] [2020-09-25 11:07:59,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:59,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:59,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:59,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:00,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:00,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:00,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:00,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 11:08:00,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:08:00,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 589 [2020-09-25 11:08:00,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:00,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:00,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:08:00,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:08:00,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 11:08:00,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:00,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:08:00,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:00,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:00,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:00,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:08:00,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:00,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:08:00,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:00,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:00,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:00,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:00,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:00,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:00,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:08:00,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:00,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:00,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:00,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:00,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:01,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:01,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:08:01,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:08:01,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 491 [2020-09-25 11:08:01,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:01,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:01,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:08:01,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:08:01,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 11:08:01,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:01,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:01,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:01,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:01,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:01,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:08:01,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:01,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 11:08:01,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:01,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:01,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:08:01,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:01,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:08:01,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:01,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:08:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:01,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:01,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:01,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:08:01,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:01,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:08:01,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:01,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:01,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:01,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:01,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:08:01,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:01,183 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 11:08:01,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208680506] [2020-09-25 11:08:01,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:08:01,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:08:01,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569806243] [2020-09-25 11:08:01,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:08:01,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:08:01,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:08:01,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:08:01,190 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 11:08:01,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:08:01,339 INFO L93 Difference]: Finished difference Result 110 states and 146 transitions. [2020-09-25 11:08:01,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:08:01,343 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 11:08:01,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:08:01,349 INFO L225 Difference]: With dead ends: 110 [2020-09-25 11:08:01,349 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 11:08:01,351 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 11:08:01,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 11:08:01,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 11:08:01,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 11:08:01,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-25 11:08:01,373 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 35 [2020-09-25 11:08:01,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:08:01,373 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-25 11:08:01,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:08:01,375 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-25 11:08:01,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 11:08:01,380 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:08:01,381 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 11:08:01,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:08:01,381 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:08:01,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:08:01,382 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 11:08:01,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:08:01,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756958730] [2020-09-25 11:08:01,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:08:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:01,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:01,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:01,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:01,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:01,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:01,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:01,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:06,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:06,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 11:08:06,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:08:06,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:08:06,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:06,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:06,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:08:06,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:08:06,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 11:08:06,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:06,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:08:06,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:06,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:06,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:06,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:08:06,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:06,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:08:06,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:06,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:06,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:06,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:06,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:06,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:06,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:08:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:06,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:06,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:06,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:06,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:07,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:07,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:07,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:09,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:09,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 11:08:09,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:08:09,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3329 [2020-09-25 11:08:09,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:09,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:09,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:08:09,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:08:09,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 11:08:09,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:09,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:09,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:09,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:09,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:09,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:09,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:09,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:08:09,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:08:09,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-25 11:08:09,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:09,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:09,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:09,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:09,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:08:09,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:10,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:10,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:10,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:10,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:10,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:10,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:10,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:08:10,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:10,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:10,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:10,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:10,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:10,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:10,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:08:10,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:10,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:10,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:10,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:10,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:10,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:08:10,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:10,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:10,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:10,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:10,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:10,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:10,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:08:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:10,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:10,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:10,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:08:10,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:10,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 11:08:10,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:10,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:10,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:08:10,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:10,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:08:10,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:08:10,088 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 11:08:10,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756958730] [2020-09-25 11:08:10,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:08:10,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:08:10,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210417488] [2020-09-25 11:08:10,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:08:10,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:08:10,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:08:10,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:08:10,091 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 7 states. [2020-09-25 11:08:10,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:08:10,260 INFO L93 Difference]: Finished difference Result 72 states and 88 transitions. [2020-09-25 11:08:10,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:08:10,261 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 11:08:10,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:08:10,266 INFO L225 Difference]: With dead ends: 72 [2020-09-25 11:08:10,266 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 11:08:10,269 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 11:08:10,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 11:08:10,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 11:08:10,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 11:08:10,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-25 11:08:10,288 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 51 [2020-09-25 11:08:10,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:08:10,290 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-25 11:08:10,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:08:10,290 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-25 11:08:10,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 11:08:10,297 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:08:10,298 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 11:08:10,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:08:10,298 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:08:10,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:08:10,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 11:08:10,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:08:10,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448501791] [2020-09-25 11:08:10,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:08:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:10,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:10,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:10,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:10,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:10,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:10,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:10,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:11,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:11,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:11,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:15,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:15,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 11:08:15,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 11:08:15,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 11:08:15,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:15,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:15,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:08:15,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:08:15,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 11:08:15,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:15,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:08:15,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:15,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:15,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:15,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:08:15,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:15,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:08:15,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:15,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:15,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:15,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:15,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:15,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:15,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:08:15,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:15,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:15,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:15,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:15,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:15,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:15,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:15,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:16,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:16,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:20,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:20,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 11:08:20,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:08:20,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:08:20,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:20,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:20,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:08:20,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 11:08:20,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 11:08:20,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:20,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:20,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:20,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:20,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:20,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:20,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:20,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:08:20,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:08:20,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-09-25 11:08:20,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:20,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:20,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:08:20,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:20,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 11:08:20,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:20,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:20,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:20,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:20,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:20,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:20,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:20,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:08:20,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:20,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:20,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:08:20,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:20,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:08:20,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:20,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:08:20,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:20,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:20,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:20,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:20,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:20,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:08:20,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:20,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:20,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:20,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:20,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:08:20,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:08:20,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:08:20,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:20,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:20,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:20,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:20,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:08:20,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:08:20,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 11:08:20,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:20,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:20,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:08:20,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:08:20,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:08:20,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:20,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:20,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:20,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:20,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:20,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:20,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:20,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:08:20,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:20,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:20,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:20,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:20,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:08:20,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:20,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:08:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:20,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:20,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:20,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:20,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:20,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:08:20,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:20,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:20,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:20,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:20,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:08:20,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:20,919 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 9 proven. 23 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 11:08:20,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448501791] [2020-09-25 11:08:20,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:08:20,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:08:20,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223608562] [2020-09-25 11:08:20,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:08:20,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:08:20,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:08:20,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:08:20,924 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 11 states. [2020-09-25 11:08:21,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:08:21,351 INFO L93 Difference]: Finished difference Result 107 states and 144 transitions. [2020-09-25 11:08:21,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:08:21,352 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-09-25 11:08:21,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:08:21,353 INFO L225 Difference]: With dead ends: 107 [2020-09-25 11:08:21,354 INFO L226 Difference]: Without dead ends: 59 [2020-09-25 11:08:21,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2020-09-25 11:08:21,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-25 11:08:21,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-09-25 11:08:21,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-25 11:08:21,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 72 transitions. [2020-09-25 11:08:21,376 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 72 transitions. Word has length 67 [2020-09-25 11:08:21,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:08:21,376 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 72 transitions. [2020-09-25 11:08:21,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:08:21,377 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 72 transitions. [2020-09-25 11:08:21,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 11:08:21,378 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:08:21,378 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 11:08:21,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:08:21,379 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:08:21,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:08:21,379 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-25 11:08:21,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:08:21,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131710583] [2020-09-25 11:08:21,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:08:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:21,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:21,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:21,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:21,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:21,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:21,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:22,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:22,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:23,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:24,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:26,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:26,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:26,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:26,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 11:08:26,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 11:08:26,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 11:08:26,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:26,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:26,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:08:26,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:08:26,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 11:08:26,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:26,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:08:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:26,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:26,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:26,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:08:26,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:26,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:08:26,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:26,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:26,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:26,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:26,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:26,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:26,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:08:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:26,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:26,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:26,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:26,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:26,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:26,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:27,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:28,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:29,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:30,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:30,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:31,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:31,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:31,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 11:08:31,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 11:08:31,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:08:31,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:31,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:31,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:08:31,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:08:31,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 11:08:31,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:31,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:31,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:31,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:31,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:31,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:31,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:08:31,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:08:31,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-09-25 11:08:31,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:31,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:31,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:08:31,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:31,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 11:08:31,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:31,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:31,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:31,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:31,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:08:31,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:31,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:08:31,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:31,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:31,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:31,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:31,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:08:31,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:31,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:08:31,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:31,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:31,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:31,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:31,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:31,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:08:31,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:31,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:31,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:08:31,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:31,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:08:31,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:31,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:08:31,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:31,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:31,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:31,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:08:31,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:31,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 11:08:31,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:31,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:31,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:31,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:31,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 11:08:31,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:31,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:31,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:31,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:31,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:08:31,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:31,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:08:31,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:31,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:31,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:31,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:31,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:31,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:31,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:08:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:31,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:31,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:31,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:31,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:31,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:08:31,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:31,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:31,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:31,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:31,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:31,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:31,780 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 9 proven. 25 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-25 11:08:31,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131710583] [2020-09-25 11:08:31,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:08:31,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:08:31,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56376985] [2020-09-25 11:08:31,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:08:31,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:08:31,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:08:31,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:08:31,783 INFO L87 Difference]: Start difference. First operand 59 states and 72 transitions. Second operand 8 states. [2020-09-25 11:08:31,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:08:31,954 INFO L93 Difference]: Finished difference Result 91 states and 121 transitions. [2020-09-25 11:08:31,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 11:08:31,956 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-09-25 11:08:31,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:08:31,960 INFO L225 Difference]: With dead ends: 91 [2020-09-25 11:08:31,960 INFO L226 Difference]: Without dead ends: 85 [2020-09-25 11:08:31,961 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 11:08:31,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-09-25 11:08:31,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 73. [2020-09-25 11:08:31,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-25 11:08:31,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 97 transitions. [2020-09-25 11:08:31,992 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 97 transitions. Word has length 69 [2020-09-25 11:08:31,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:08:31,992 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 97 transitions. [2020-09-25 11:08:31,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:08:31,993 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 97 transitions. [2020-09-25 11:08:31,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 11:08:31,994 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:08:31,994 INFO L422 BasicCegarLoop]: trace histogram [5, 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] [2020-09-25 11:08:31,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 11:08:31,995 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:08:31,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:08:31,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1208671938, now seen corresponding path program 1 times [2020-09-25 11:08:31,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:08:31,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238831470] [2020-09-25 11:08:31,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:08:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:32,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:32,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:32,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:32,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:32,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:32,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:32,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:32,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:34,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:34,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:34,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:34,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:34,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:35,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:35,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:37,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:37,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 11:08:37,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 11:08:37,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 11:08:37,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:37,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:37,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:08:37,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:08:37,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 11:08:37,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:37,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:08:37,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:37,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:37,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:37,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:08:37,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:37,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:08:37,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:37,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:37,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:37,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:37,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:37,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:37,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:08:37,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:37,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:37,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:37,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:37,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:37,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:37,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:37,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:38,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:38,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:42,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:42,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 11:08:42,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:08:42,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 11:08:42,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:42,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:42,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:08:42,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 11:08:42,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 11:08:42,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:42,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:42,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:42,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:42,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:42,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:42,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:42,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:08:42,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:08:42,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-25 11:08:42,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:42,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:42,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:08:42,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:42,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 11:08:42,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:42,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:42,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:42,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:42,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:08:42,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:42,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:08:42,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:42,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:42,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:08:42,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:42,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:08:42,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:42,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:08:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:42,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:42,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:42,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:08:42,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:42,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:08:42,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:42,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:42,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:42,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:42,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:08:42,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:42,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 11:08:42,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:42,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:42,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:42,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:42,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:42,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:42,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:42,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:43,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:43,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:08:43,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:08:43,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 710 [2020-09-25 11:08:43,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:43,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:43,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:08:43,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:08:43,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 11:08:43,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:43,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:43,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:43,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:43,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:43,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:08:43,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:43,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:08:43,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:43,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:43,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:43,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:43,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:08:43,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:43,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:08:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:43,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:43,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:43,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:08:43,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:43,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:08:43,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:43,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:43,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:43,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:43,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:08:43,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:43,123 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-25 11:08:43,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238831470] [2020-09-25 11:08:43,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:08:43,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:08:43,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792192985] [2020-09-25 11:08:43,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:08:43,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:08:43,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:08:43,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:08:43,125 INFO L87 Difference]: Start difference. First operand 73 states and 97 transitions. Second operand 11 states. [2020-09-25 11:08:43,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:08:43,566 INFO L93 Difference]: Finished difference Result 192 states and 311 transitions. [2020-09-25 11:08:43,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:08:43,570 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-09-25 11:08:43,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:08:43,574 INFO L225 Difference]: With dead ends: 192 [2020-09-25 11:08:43,574 INFO L226 Difference]: Without dead ends: 124 [2020-09-25 11:08:43,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 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 11:08:43,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-09-25 11:08:43,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 111. [2020-09-25 11:08:43,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-09-25 11:08:43,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 161 transitions. [2020-09-25 11:08:43,594 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 161 transitions. Word has length 71 [2020-09-25 11:08:43,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:08:43,594 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 161 transitions. [2020-09-25 11:08:43,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:08:43,594 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 161 transitions. [2020-09-25 11:08:43,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 11:08:43,596 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:08:43,597 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 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 11:08:43,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 11:08:43,597 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:08:43,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:08:43,598 INFO L82 PathProgramCache]: Analyzing trace with hash -594280133, now seen corresponding path program 1 times [2020-09-25 11:08:43,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:08:43,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748895880] [2020-09-25 11:08:43,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:08:43,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:43,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:43,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:43,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:43,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:43,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:43,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:45,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:45,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:45,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:47,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:47,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:47,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:47,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking...