/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_15-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:06:53,452 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:06:53,457 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:06:53,504 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:06:53,504 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:06:53,515 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:06:53,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:06:53,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:06:53,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:06:53,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:06:53,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:06:53,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:06:53,530 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:06:53,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:06:53,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:06:53,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:06:53,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:06:53,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:06:53,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:06:53,544 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:06:53,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:06:53,547 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:06:53,548 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:06:53,549 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:06:53,551 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:06:53,551 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:06:53,552 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:06:53,553 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:06:53,553 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:06:53,554 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:06:53,555 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:06:53,555 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:06:53,556 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:06:53,557 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:06:53,558 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:06:53,559 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:06:53,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:06:53,560 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:06:53,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:06:53,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:06:53,562 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:06:53,563 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 11:06:53,590 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:06:53,591 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:06:53,592 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:06:53,592 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:06:53,592 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:06:53,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:06:53,593 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:06:53,593 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:06:53,593 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:06:53,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:06:53,594 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:06:53,594 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:06:53,594 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:06:53,594 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:06:53,595 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:06:53,595 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:06:53,595 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:06:53,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:06:53,596 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:06:53,596 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:06:53,596 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:06:53,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:06:53,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:06:53,597 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:06:53,597 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:06:53,597 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:06:53,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:06:53,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:06:53,598 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:06:53,598 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 11:06:54,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:06:54,115 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:06:54,120 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:06:54,122 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:06:54,123 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:06:54,124 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_15-1.c [2020-09-25 11:06:54,206 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ddc6ed3bc/73e02c18b6fd4771a038cd1b1ba54a09/FLAG826e259ec [2020-09-25 11:06:54,744 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:06:54,744 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_15-1.c [2020-09-25 11:06:54,754 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ddc6ed3bc/73e02c18b6fd4771a038cd1b1ba54a09/FLAG826e259ec [2020-09-25 11:06:55,078 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ddc6ed3bc/73e02c18b6fd4771a038cd1b1ba54a09 [2020-09-25 11:06:55,091 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:06:55,098 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:06:55,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:06:55,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:06:55,105 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:06:55,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:06:55" (1/1) ... [2020-09-25 11:06:55,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f88baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:55, skipping insertion in model container [2020-09-25 11:06:55,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:06:55" (1/1) ... [2020-09-25 11:06:55,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:06:55,147 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:06:55,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:06:55,387 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:06:55,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:06:55,425 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:06:55,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:55 WrapperNode [2020-09-25 11:06:55,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:06:55,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:06:55,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:06:55,427 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:06:55,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:55" (1/1) ... [2020-09-25 11:06:55,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:55" (1/1) ... [2020-09-25 11:06:55,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:55" (1/1) ... [2020-09-25 11:06:55,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:55" (1/1) ... [2020-09-25 11:06:55,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:55" (1/1) ... [2020-09-25 11:06:55,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:55" (1/1) ... [2020-09-25 11:06:55,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:55" (1/1) ... [2020-09-25 11:06:55,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:06:55,464 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:06:55,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:06:55,464 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:06:55,465 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:55" (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 11:06:55,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:06:55,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:06:55,633 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 11:06:55,634 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:06:55,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:06:55,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:06:55,634 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 11:06:55,634 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:06:55,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:06:55,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:06:55,853 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:06:55,853 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 11:06:55,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:06:55 BoogieIcfgContainer [2020-09-25 11:06:55,859 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:06:55,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:06:55,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:06:55,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:06:55,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:06:55" (1/3) ... [2020-09-25 11:06:55,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4f37bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:06:55, skipping insertion in model container [2020-09-25 11:06:55,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:55" (2/3) ... [2020-09-25 11:06:55,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4f37bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:06:55, skipping insertion in model container [2020-09-25 11:06:55,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:06:55" (3/3) ... [2020-09-25 11:06:55,869 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_15-1.c [2020-09-25 11:06:55,885 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:06:55,895 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:06:55,925 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:06:55,982 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:06:55,983 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:06:55,983 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:06:55,983 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:06:55,983 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:06:55,984 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:06:55,984 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:06:55,984 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:06:56,010 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 11:06:56,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 11:06:56,020 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:56,021 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:06:56,022 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:56,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:56,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 11:06:56,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:56,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787378329] [2020-09-25 11:06:56,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:56,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:56,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:56,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:56,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:06:56,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:56,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 11:06:56,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:56,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:56,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:06:56,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:06:56,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:06:56,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 11:06:56,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:56,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:56,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:56,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:56,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:56,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:06:56,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:56,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:56,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:56,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:56,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:56,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:56,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:06:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:56,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:56,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:56,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:06:56,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:56,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 11:06:56,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:56,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:56,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:06:56,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:06:56,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:06:56,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:56,403 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 11:06:56,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787378329] [2020-09-25 11:06:56,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:06:56,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:06:56,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169699295] [2020-09-25 11:06:56,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:06:56,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:56,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:06:56,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:06:56,432 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 11:06:56,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:56,556 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 11:06:56,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:06:56,559 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 11:06:56,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:56,571 INFO L225 Difference]: With dead ends: 44 [2020-09-25 11:06:56,571 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 11:06:56,576 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 11:06:56,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 11:06:56,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 11:06:56,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 11:06:56,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 11:06:56,627 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 11:06:56,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:56,628 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 11:06:56,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:06:56,628 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 11:06:56,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 11:06:56,630 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:56,631 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 11:06:56,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:06:56,631 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:56,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:56,632 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 11:06:56,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:56,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860722189] [2020-09-25 11:06:56,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:56,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:56,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:56,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:56,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 11:06:56,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:56,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 11:06:56,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:56,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:56,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:06:56,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:06:56,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:06:56,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:56,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:56,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:56,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:56,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:56,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:56,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:56,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:06:56,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:56,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:56,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:56,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:56,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:56,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:56,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:06:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:56,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:56,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:56,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:06:56,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:56,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 11:06:56,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:56,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:56,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:06:56,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:06:56,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:06:56,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:56,829 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 11:06:56,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860722189] [2020-09-25 11:06:56,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:06:56,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:06:56,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167952708] [2020-09-25 11:06:56,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:06:56,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:56,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:06:56,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:06:56,834 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 11:06:56,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:56,911 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 11:06:56,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:06:56,912 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 11:06:56,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:56,914 INFO L225 Difference]: With dead ends: 36 [2020-09-25 11:06:56,914 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 11:06:56,915 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 11:06:56,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 11:06:56,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 11:06:56,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 11:06:56,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 11:06:56,924 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 11:06:56,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:56,925 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 11:06:56,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:06:56,925 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 11:06:56,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 11:06:56,927 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:56,927 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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 11:06:56,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:06:56,928 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:56,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:56,928 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 11:06:56,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:56,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996811071] [2020-09-25 11:06:56,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:56,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:56,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:57,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:57,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:57,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:57,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 11:06:57,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:06:57,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 637 [2020-09-25 11:06:57,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:57,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:57,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:06:57,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:06:57,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 11:06:57,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:06:57,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:57,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:57,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:57,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:57,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:57,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:57,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:06:57,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:57,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:57,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:57,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:57,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:57,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:57,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:06:57,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:57,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:57,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:57,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:57,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:57,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:06:57,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:06:57,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-09-25 11:06:57,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:57,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:57,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:06:57,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:06:57,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:06:57,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:57,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:06:57,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:57,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:57,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:57,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:06:57,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:57,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 11:06:57,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:57,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:57,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:06:57,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:57,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:06:57,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:57,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:06:57,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:57,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:57,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:57,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:06:57,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:57,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:06:57,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:57,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:57,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:06:57,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:57,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:06:57,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:57,986 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 11:06:57,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996811071] [2020-09-25 11:06:57,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:06:57,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:06:57,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414944314] [2020-09-25 11:06:57,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:06:57,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:57,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:06:57,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:06:57,990 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-09-25 11:06:58,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:58,103 INFO L93 Difference]: Finished difference Result 62 states and 79 transitions. [2020-09-25 11:06:58,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:06:58,104 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 11:06:58,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:58,106 INFO L225 Difference]: With dead ends: 62 [2020-09-25 11:06:58,106 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 11:06:58,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:06:58,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 11:06:58,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-09-25 11:06:58,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 11:06:58,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-09-25 11:06:58,118 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 33 [2020-09-25 11:06:58,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:58,118 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-09-25 11:06:58,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:06:58,118 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-09-25 11:06:58,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 11:06:58,120 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:58,121 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:06:58,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:06:58,121 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:58,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:58,122 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 1 times [2020-09-25 11:06:58,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:58,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167355828] [2020-09-25 11:06:58,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:58,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:58,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:58,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:58,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:58,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 11:06:58,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:06:58,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-09-25 11:06:58,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:58,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:58,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:06:58,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:06:58,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 11:06:58,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:58,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:58,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:58,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:58,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:58,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:58,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:58,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:06:58,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:58,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:58,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:58,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:58,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:58,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:58,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:06:58,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:58,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:58,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:58,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:58,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:06:58,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:06:58,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-09-25 11:06:58,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:58,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:58,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:06:58,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:06:58,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 11:06:58,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:58,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:06:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:58,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:58,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:58,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:06:58,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:58,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:06:58,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:58,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:58,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:06:58,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:58,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:06:58,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:58,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:06:58,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:58,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:58,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:58,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:06:58,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:58,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:06:58,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:58,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:58,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:06:58,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:58,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:06:58,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:58,974 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 11:06:58,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167355828] [2020-09-25 11:06:58,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:06:58,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:06:58,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635439392] [2020-09-25 11:06:58,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:06:58,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:58,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:06:58,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:06:58,977 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 7 states. [2020-09-25 11:06:59,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:59,067 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-09-25 11:06:59,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:06:59,068 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-09-25 11:06:59,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:59,070 INFO L225 Difference]: With dead ends: 50 [2020-09-25 11:06:59,070 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 11:06:59,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:06:59,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 11:06:59,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2020-09-25 11:06:59,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 11:06:59,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-09-25 11:06:59,080 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 34 [2020-09-25 11:06:59,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:59,080 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-09-25 11:06:59,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:06:59,081 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-09-25 11:06:59,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 11:06:59,082 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:59,082 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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 11:06:59,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:06:59,083 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:59,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:59,083 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 11:06:59,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:59,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636861496] [2020-09-25 11:06:59,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:59,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:59,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:59,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:59,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:59,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:59,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:59,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 11:06:59,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:06:59,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 479 [2020-09-25 11:06:59,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:59,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:59,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:06:59,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:06:59,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 11:06:59,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:59,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:59,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:59,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:59,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:59,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:59,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:59,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:06:59,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:59,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:59,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:59,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:59,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:59,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:59,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:06:59,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:59,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:59,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:59,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:59,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:59,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:59,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:06:59,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:06:59,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 384 [2020-09-25 11:06:59,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:59,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:59,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:06:59,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:06:59,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 11:06:59,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:00,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:00,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:00,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:00,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:00,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:00,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 11:07:00,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:00,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:00,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:00,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:00,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:07:00,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:00,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:07:00,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:00,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:00,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:00,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:00,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:00,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:07:00,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:00,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:00,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:00,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:00,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:00,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:00,074 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 11:07:00,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636861496] [2020-09-25 11:07:00,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:07:00,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 11:07:00,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436327654] [2020-09-25 11:07:00,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:07:00,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:00,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:07:00,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:07:00,078 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 6 states. [2020-09-25 11:07:00,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:00,216 INFO L93 Difference]: Finished difference Result 94 states and 129 transitions. [2020-09-25 11:07:00,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:07:00,216 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-09-25 11:07:00,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:00,220 INFO L225 Difference]: With dead ends: 94 [2020-09-25 11:07:00,220 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 11:07:00,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:07:00,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 11:07:00,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2020-09-25 11:07:00,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 11:07:00,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 70 transitions. [2020-09-25 11:07:00,235 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 70 transitions. Word has length 35 [2020-09-25 11:07:00,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:00,236 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 70 transitions. [2020-09-25 11:07:00,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:07:00,236 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 70 transitions. [2020-09-25 11:07:00,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 11:07:00,239 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:00,239 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 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 11:07:00,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:07:00,239 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:00,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:00,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 2 times [2020-09-25 11:07:00,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:00,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212413135] [2020-09-25 11:07:00,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:00,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:00,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:00,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:00,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:00,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:00,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:00,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:00,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:05,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:05,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 11:07:05,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:07:05,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 11:07:05,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:05,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:05,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:05,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:05,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 11:07:05,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 11:07:05,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:05,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:05,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:05,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:05,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:05,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:05,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:07:05,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:05,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:05,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:05,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:05,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:05,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:05,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:05,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:05,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:05,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:05,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:05,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:05,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:06,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:08,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:08,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 11:07:08,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:07:08,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3681 [2020-09-25 11:07:08,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:08,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:08,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:08,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:08,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 11:07:08,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:09,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:09,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:09,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:09,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:09,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:07:09,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:07:09,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-25 11:07:09,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:09,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:09,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:09,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:09,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:07:09,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:09,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:09,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:09,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:09,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:09,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:09,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:09,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:07:09,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:09,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:09,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:09,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:09,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:09,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:09,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:07:09,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:09,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:09,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:09,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:09,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:09,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:07:09,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:09,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:09,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:09,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:09,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:09,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:09,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:07:09,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:09,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:09,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:09,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:09,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:09,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 11:07:09,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:09,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:09,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:09,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:09,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:07:09,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:09,222 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 11:07:09,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212413135] [2020-09-25 11:07:09,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:07:09,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:07:09,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207538145] [2020-09-25 11:07:09,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:07:09,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:09,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:07:09,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:07:09,225 INFO L87 Difference]: Start difference. First operand 54 states and 70 transitions. Second operand 7 states. [2020-09-25 11:07:09,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:09,361 INFO L93 Difference]: Finished difference Result 74 states and 95 transitions. [2020-09-25 11:07:09,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:07:09,362 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 11:07:09,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:09,364 INFO L225 Difference]: With dead ends: 74 [2020-09-25 11:07:09,365 INFO L226 Difference]: Without dead ends: 68 [2020-09-25 11:07:09,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:07:09,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-25 11:07:09,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 62. [2020-09-25 11:07:09,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 11:07:09,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 82 transitions. [2020-09-25 11:07:09,379 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 82 transitions. Word has length 51 [2020-09-25 11:07:09,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:09,379 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 82 transitions. [2020-09-25 11:07:09,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:07:09,380 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 82 transitions. [2020-09-25 11:07:09,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 11:07:09,383 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:09,384 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:07:09,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:07:09,384 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:09,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:09,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1086233509, now seen corresponding path program 3 times [2020-09-25 11:07:09,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:09,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206633980] [2020-09-25 11:07:09,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:09,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:09,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:09,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:09,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:09,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:09,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:09,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:12,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:12,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:12,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:14,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:14,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 11:07:14,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:07:14,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 11:07:14,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:14,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:14,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:07:14,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 11:07:14,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 11:07:14,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:14,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:14,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:14,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:14,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:14,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:14,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:14,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:07:14,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:14,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:14,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:14,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:14,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:14,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:14,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:14,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:14,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:14,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:14,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:14,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:14,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:14,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:15,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:15,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:17,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:17,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:17,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:17,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:17,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:19,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:19,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 11:07:19,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 11:07:19,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 11:07:19,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:19,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:19,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:07:19,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 11:07:19,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 11:07:19,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:19,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:19,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:19,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:19,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:19,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:19,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:19,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:07:19,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:07:19,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 11:07:19,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:19,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:19,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:19,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:19,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 11:07:19,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:19,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:19,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:19,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:19,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:19,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:19,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:07:19,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:19,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:19,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:19,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:19,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:19,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:19,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:07:19,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:19,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:19,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:19,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:19,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:19,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:07:19,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:19,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:19,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:19,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:19,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:19,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:19,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:07:19,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:19,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:19,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:19,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:19,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:19,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:20,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:20,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:20,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:23,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:23,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 11:07:23,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:07:23,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3509 [2020-09-25 11:07:23,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:23,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:23,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:23,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:23,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 11:07:23,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:23,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:23,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:23,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:23,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:23,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:23,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:07:23,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:07:23,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 11:07:23,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:23,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:23,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:23,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:23,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:07:23,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:23,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:23,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:23,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:23,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:23,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:23,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:23,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:07:23,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:23,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:23,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:23,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:23,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:23,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:23,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:07:23,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:23,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:23,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:23,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:23,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:23,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:07:23,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:23,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:23,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:23,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:23,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:23,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:23,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:07:23,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:23,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:23,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:23,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:23,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:23,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:07:23,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:23,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:23,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:23,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:23,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:23,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:23,444 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 54 proven. 69 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-09-25 11:07:23,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206633980] [2020-09-25 11:07:23,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:07:23,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:07:23,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755986128] [2020-09-25 11:07:23,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:07:23,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:23,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:07:23,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:07:23,448 INFO L87 Difference]: Start difference. First operand 62 states and 82 transitions. Second operand 9 states. [2020-09-25 11:07:23,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:23,659 INFO L93 Difference]: Finished difference Result 103 states and 141 transitions. [2020-09-25 11:07:23,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 11:07:23,660 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 85 [2020-09-25 11:07:23,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:23,661 INFO L225 Difference]: With dead ends: 103 [2020-09-25 11:07:23,661 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 11:07:23,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:07:23,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 11:07:23,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-09-25 11:07:23,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 11:07:23,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-25 11:07:23,677 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 85 [2020-09-25 11:07:23,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:23,677 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-25 11:07:23,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:07:23,678 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-25 11:07:23,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 11:07:23,683 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:23,683 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:07:23,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 11:07:23,684 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:23,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:23,685 INFO L82 PathProgramCache]: Analyzing trace with hash 501566307, now seen corresponding path program 4 times [2020-09-25 11:07:23,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:23,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699453726] [2020-09-25 11:07:23,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:23,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:23,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:23,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:23,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:23,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:23,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:23,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:24,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:24,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:26,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:26,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:28,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:28,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 11:07:28,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 11:07:28,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 11:07:28,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:28,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:28,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:07:28,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 11:07:28,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 11:07:28,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:28,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:28,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:28,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:28,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:28,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:28,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:28,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:07:28,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:28,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:28,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:28,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:28,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:28,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:28,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:28,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:28,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:28,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:28,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:28,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:29,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:29,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:29,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:29,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:29,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:30,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:30,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:33,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:33,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 11:07:33,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 11:07:33,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 11:07:33,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:33,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:33,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:07:33,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 11:07:33,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 11:07:33,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:33,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:33,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:33,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:33,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:33,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:33,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:07:33,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:07:33,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-09-25 11:07:33,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:33,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:33,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:33,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:33,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 11:07:33,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:33,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:33,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:33,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:33,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:33,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:33,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:33,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:07:33,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:33,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:33,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:33,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:33,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:07:33,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:34,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:07:34,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:34,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:34,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:34,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:34,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:34,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:07:34,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:34,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:34,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:34,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:34,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:34,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:34,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:07:34,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:34,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:34,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:34,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:34,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:34,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:34,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:36,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:36,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 11:07:36,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:07:36,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2434 [2020-09-25 11:07:36,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:36,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:36,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:36,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:36,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 11:07:36,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:36,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:36,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:36,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:36,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:36,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:07:36,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:36,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 11:07:36,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:36,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:36,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:36,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:36,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 11:07:36,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:36,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:36,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:36,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:36,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:36,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:36,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:36,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:07:36,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:36,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:36,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:36,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:36,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:36,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:36,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:07:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:36,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:36,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:36,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:36,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:36,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:07:36,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:36,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:36,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:36,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:36,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:36,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:36,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:07:36,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:36,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:36,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:36,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:36,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:36,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:07:36,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:36,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:36,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:36,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:36,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:36,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:36,579 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 60 proven. 70 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-09-25 11:07:36,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699453726] [2020-09-25 11:07:36,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:07:36,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:07:36,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185939379] [2020-09-25 11:07:36,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:07:36,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:36,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:07:36,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:07:36,581 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 9 states. [2020-09-25 11:07:36,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:36,884 INFO L93 Difference]: Finished difference Result 95 states and 125 transitions. [2020-09-25 11:07:36,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:07:36,885 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-09-25 11:07:36,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:36,887 INFO L225 Difference]: With dead ends: 95 [2020-09-25 11:07:36,887 INFO L226 Difference]: Without dead ends: 57 [2020-09-25 11:07:36,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:07:36,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-25 11:07:36,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2020-09-25 11:07:36,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-25 11:07:36,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2020-09-25 11:07:36,895 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 87 [2020-09-25 11:07:36,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:36,896 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2020-09-25 11:07:36,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:07:36,896 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2020-09-25 11:07:36,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-25 11:07:36,897 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:36,897 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:07:36,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 11:07:36,898 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:36,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:36,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1108116753, now seen corresponding path program 5 times [2020-09-25 11:07:36,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:36,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [427250530] [2020-09-25 11:07:36,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:36,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:36,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:36,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:36,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:37,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:37,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:37,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:37,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:37,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:37,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:37,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:38,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:38,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:38,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:38,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:38,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:40,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:41,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:41,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 11:07:41,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-25 11:07:41,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 11:07:41,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:41,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:41,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:07:41,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 11:07:41,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 11:07:41,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:41,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:41,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:41,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:41,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:41,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:41,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:07:41,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:41,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:41,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:41,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:41,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:41,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:41,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:41,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:41,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:42,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:42,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:42,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:42,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:42,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:42,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:45,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:45,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:45,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:45,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:45,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:45,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:45,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:45,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:45,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking...