/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=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:11:36,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:11:36,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:11:36,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:11:36,292 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:11:36,293 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:11:36,295 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:11:36,296 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:11:36,298 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:11:36,299 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:11:36,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:11:36,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:11:36,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:11:36,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:11:36,303 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:11:36,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:11:36,305 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:11:36,306 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:11:36,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:11:36,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:11:36,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:11:36,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:11:36,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:11:36,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:11:36,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:11:36,316 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:11:36,317 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:11:36,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:11:36,318 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:11:36,319 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:11:36,319 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:11:36,320 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:11:36,321 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:11:36,321 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:11:36,322 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:11:36,323 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:11:36,323 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:11:36,323 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:11:36,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:11:36,325 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:11:36,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:11:36,326 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 10:11:36,350 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:11:36,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:11:36,352 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:11:36,352 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:11:36,352 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:11:36,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:11:36,353 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:11:36,353 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:11:36,353 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:11:36,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:11:36,353 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:11:36,353 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:11:36,354 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:11:36,354 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:11:36,354 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:11:36,354 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:11:36,354 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:11:36,355 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:11:36,355 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:11:36,355 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:11:36,355 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:11:36,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:11:36,356 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:11:36,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:11:36,356 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:11:36,356 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:11:36,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:11:36,357 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:11:36,357 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:11:36,357 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 10:11:36,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:11:36,839 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:11:36,843 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:11:36,845 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:11:36,846 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:11:36,847 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label15.c [2020-09-25 10:11:36,926 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b466b39cb/fb66766cd82e4d238dddc2f52db3660a/FLAG66dc93f22 [2020-09-25 10:11:37,577 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:11:37,578 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label15.c [2020-09-25 10:11:37,592 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b466b39cb/fb66766cd82e4d238dddc2f52db3660a/FLAG66dc93f22 [2020-09-25 10:11:37,794 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b466b39cb/fb66766cd82e4d238dddc2f52db3660a [2020-09-25 10:11:37,808 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:11:37,813 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:11:37,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:11:37,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:11:37,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:11:37,821 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:11:37" (1/1) ... [2020-09-25 10:11:37,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb7919e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:37, skipping insertion in model container [2020-09-25 10:11:37,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:11:37" (1/1) ... [2020-09-25 10:11:37,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:11:37,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:11:38,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:11:38,380 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:11:38,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:11:38,639 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:11:38,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:38 WrapperNode [2020-09-25 10:11:38,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:11:38,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:11:38,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:11:38,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:11:38,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:38" (1/1) ... [2020-09-25 10:11:38,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:38" (1/1) ... [2020-09-25 10:11:38,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:38" (1/1) ... [2020-09-25 10:11:38,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:38" (1/1) ... [2020-09-25 10:11:38,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:38" (1/1) ... [2020-09-25 10:11:38,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:38" (1/1) ... [2020-09-25 10:11:38,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:38" (1/1) ... [2020-09-25 10:11:38,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:11:38,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:11:38,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:11:38,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:11:38,770 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:38" (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 10:11:38,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:11:38,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:11:38,866 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:11:38,866 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:11:38,867 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:11:38,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:11:38,868 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:11:38,869 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:11:38,869 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:11:38,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:11:38,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:11:40,400 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:11:40,401 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:11:40,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:11:40 BoogieIcfgContainer [2020-09-25 10:11:40,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:11:40,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:11:40,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:11:40,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:11:40,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:11:37" (1/3) ... [2020-09-25 10:11:40,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600cbf66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:11:40, skipping insertion in model container [2020-09-25 10:11:40,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:38" (2/3) ... [2020-09-25 10:11:40,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600cbf66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:11:40, skipping insertion in model container [2020-09-25 10:11:40,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:11:40" (3/3) ... [2020-09-25 10:11:40,420 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label15.c [2020-09-25 10:11:40,433 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:11:40,446 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:11:40,470 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:11:40,509 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:11:40,510 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:11:40,510 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:11:40,510 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:11:40,510 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:11:40,510 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:11:40,510 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:11:40,511 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:11:40,544 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 10:11:40,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 10:11:40,554 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:40,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:11:40,556 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:40,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:40,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1814812065, now seen corresponding path program 1 times [2020-09-25 10:11:40,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:40,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079871953] [2020-09-25 10:11:40,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:40,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:40,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:41,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:41,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:41,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:41,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 10:11:41,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:11:41,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 583 [2020-09-25 10:11:41,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:41,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:41,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:11:41,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 10:11:41,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 10:11:41,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:11:41,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:41,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:41,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:41,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:41,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:41,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 10:11:41,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:41,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:41,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:41,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:41,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:11:41,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:41,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:11:41,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079871953] [2020-09-25 10:11:41,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:11:41,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:11:41,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809991802] [2020-09-25 10:11:41,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:11:41,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:41,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:11:41,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:11:41,551 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 10:11:43,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:43,825 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 10:11:43,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:11:43,828 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-09-25 10:11:43,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:43,870 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 10:11:43,872 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 10:11:43,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:11:43,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 10:11:43,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 10:11:43,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 10:11:43,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 10:11:43,998 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 29 [2020-09-25 10:11:43,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:43,999 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 10:11:43,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:11:43,999 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 10:11:44,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-09-25 10:11:44,005 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:44,005 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:11:44,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:11:44,006 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:44,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:44,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1743569131, now seen corresponding path program 1 times [2020-09-25 10:11:44,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:44,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590978414] [2020-09-25 10:11:44,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:44,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:44,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:44,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:44,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:44,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:45,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:45,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:46,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:46,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 10:11:46,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:11:46,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2014 [2020-09-25 10:11:46,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:46,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:46,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:11:46,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 10:11:46,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 10:11:46,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:46,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:46,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:46,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:46,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:46,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:46,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 10:11:46,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:46,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:46,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:46,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:46,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:11:46,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:46,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:46,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:46,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:46,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:46,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:46,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 10:11:46,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:46,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-25 10:11:46,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:46,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:46,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:46,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:46,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 10:11:46,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:11:46,548 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:11:46,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590978414] [2020-09-25 10:11:46,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:46,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:11:46,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004366756] [2020-09-25 10:11:46,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:11:46,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:46,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:11:46,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:11:46,609 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 7 states. [2020-09-25 10:11:49,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:49,137 INFO L93 Difference]: Finished difference Result 1451 states and 1877 transitions. [2020-09-25 10:11:49,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:11:49,137 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 109 [2020-09-25 10:11:49,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:49,144 INFO L225 Difference]: With dead ends: 1451 [2020-09-25 10:11:49,144 INFO L226 Difference]: Without dead ends: 923 [2020-09-25 10:11:49,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:11:49,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2020-09-25 10:11:49,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 861. [2020-09-25 10:11:49,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 861 states. [2020-09-25 10:11:49,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1031 transitions. [2020-09-25 10:11:49,207 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1031 transitions. Word has length 109 [2020-09-25 10:11:49,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:49,207 INFO L479 AbstractCegarLoop]: Abstraction has 861 states and 1031 transitions. [2020-09-25 10:11:49,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:11:49,208 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1031 transitions. [2020-09-25 10:11:49,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-09-25 10:11:49,212 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:49,212 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:11:49,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:11:49,213 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:49,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:49,213 INFO L82 PathProgramCache]: Analyzing trace with hash -162546798, now seen corresponding path program 1 times [2020-09-25 10:11:49,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:49,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501216912] [2020-09-25 10:11:49,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:49,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:49,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:49,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:49,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:49,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:50,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:52,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:52,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-25 10:11:52,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:11:52,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3148 [2020-09-25 10:11:52,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:52,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:52,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:11:52,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:11:52,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 10:11:52,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:11:52,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:52,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:52,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:52,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:52,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:52,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:52,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 10:11:52,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:52,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:52,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:52,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:52,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:11:52,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:11:52,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:52,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:52,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:52,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:52,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:11:52,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:52,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-25 10:11:52,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:52,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:52,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:11:52,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:52,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 10:11:52,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:52,918 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:11:52,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501216912] [2020-09-25 10:11:52,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:52,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:11:52,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363739713] [2020-09-25 10:11:52,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:11:52,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:52,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:11:52,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:11:52,923 INFO L87 Difference]: Start difference. First operand 861 states and 1031 transitions. Second operand 8 states. [2020-09-25 10:11:56,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:56,475 INFO L93 Difference]: Finished difference Result 2401 states and 2938 transitions. [2020-09-25 10:11:56,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:11:56,480 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 118 [2020-09-25 10:11:56,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:56,489 INFO L225 Difference]: With dead ends: 2401 [2020-09-25 10:11:56,489 INFO L226 Difference]: Without dead ends: 1555 [2020-09-25 10:11:56,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:11:56,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2020-09-25 10:11:56,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 1514. [2020-09-25 10:11:56,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1514 states. [2020-09-25 10:11:56,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 1779 transitions. [2020-09-25 10:11:56,541 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 1779 transitions. Word has length 118 [2020-09-25 10:11:56,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:56,541 INFO L479 AbstractCegarLoop]: Abstraction has 1514 states and 1779 transitions. [2020-09-25 10:11:56,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:11:56,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 1779 transitions. [2020-09-25 10:11:56,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-09-25 10:11:56,549 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:56,549 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 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 10:11:56,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:11:56,550 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:56,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:56,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1811064614, now seen corresponding path program 1 times [2020-09-25 10:11:56,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:56,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624276078] [2020-09-25 10:11:56,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:56,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:56,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:56,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:56,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:58,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:58,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:59,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:00,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:00,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-25 10:12:00,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:12:00,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3574 [2020-09-25 10:12:00,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:00,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:00,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:12:00,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:12:00,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-09-25 10:12:00,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:00,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:00,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:00,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:00,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:00,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:00,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:00,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 10:12:00,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:00,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:00,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:00,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:00,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:12:00,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:00,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:00,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:00,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:00,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 10:12:00,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:00,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 10:12:00,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:00,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:00,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:12:00,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:00,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 10:12:00,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:00,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 10:12:00,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:00,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:00,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:00,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 10:12:00,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:00,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 10:12:00,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:00,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:00,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:12:00,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:00,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 10:12:00,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:00,718 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:12:00,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [624276078] [2020-09-25 10:12:00,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:00,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 10:12:00,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284560225] [2020-09-25 10:12:00,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:12:00,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:00,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:12:00,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:12:00,729 INFO L87 Difference]: Start difference. First operand 1514 states and 1779 transitions. Second operand 10 states. [2020-09-25 10:12:05,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:05,148 INFO L93 Difference]: Finished difference Result 3480 states and 4395 transitions. [2020-09-25 10:12:05,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 10:12:05,149 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 188 [2020-09-25 10:12:05,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:05,174 INFO L225 Difference]: With dead ends: 3480 [2020-09-25 10:12:05,175 INFO L226 Difference]: Without dead ends: 2618 [2020-09-25 10:12:05,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-09-25 10:12:05,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2618 states. [2020-09-25 10:12:05,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2618 to 2517. [2020-09-25 10:12:05,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2517 states. [2020-09-25 10:12:05,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2517 states to 2517 states and 3070 transitions. [2020-09-25 10:12:05,293 INFO L78 Accepts]: Start accepts. Automaton has 2517 states and 3070 transitions. Word has length 188 [2020-09-25 10:12:05,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:05,294 INFO L479 AbstractCegarLoop]: Abstraction has 2517 states and 3070 transitions. [2020-09-25 10:12:05,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:12:05,294 INFO L276 IsEmpty]: Start isEmpty. Operand 2517 states and 3070 transitions. [2020-09-25 10:12:05,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 10:12:05,298 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:05,299 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:12:05,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:12:05,299 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:05,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:05,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1668861196, now seen corresponding path program 1 times [2020-09-25 10:12:05,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:05,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310766132] [2020-09-25 10:12:05,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:05,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:05,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:05,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:05,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:06,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:07,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:10,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:10,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:10,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 10:12:10,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:12:10,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5130 [2020-09-25 10:12:10,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:10,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:10,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:12:10,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:12:10,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-09-25 10:12:10,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:10,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:10,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:10,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:10,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:10,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:10,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:10,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 10:12:10,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:10,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:10,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:12:10,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:10,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:12:10,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:10,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:10,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:10,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:10,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:10,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:10,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:12:10,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:10,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-09-25 10:12:10,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:10,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:10,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:12:10,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:10,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 10:12:10,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:10,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 10:12:10,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:10,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:11,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:11,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:11,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 10:12:11,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:11,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-09-25 10:12:11,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:11,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:11,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:12:11,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:11,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 10:12:11,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:11,318 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:12:11,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310766132] [2020-09-25 10:12:11,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:11,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:12:11,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540618276] [2020-09-25 10:12:11,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:12:11,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:11,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:12:11,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:12:11,321 INFO L87 Difference]: Start difference. First operand 2517 states and 3070 transitions. Second operand 11 states. [2020-09-25 10:12:15,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:15,373 INFO L93 Difference]: Finished difference Result 6200 states and 8096 transitions. [2020-09-25 10:12:15,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 10:12:15,373 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 201 [2020-09-25 10:12:15,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:15,394 INFO L225 Difference]: With dead ends: 6200 [2020-09-25 10:12:15,394 INFO L226 Difference]: Without dead ends: 3551 [2020-09-25 10:12:15,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2020-09-25 10:12:15,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3551 states. [2020-09-25 10:12:15,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3551 to 3439. [2020-09-25 10:12:15,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3439 states. [2020-09-25 10:12:15,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3439 states to 3439 states and 4151 transitions. [2020-09-25 10:12:15,516 INFO L78 Accepts]: Start accepts. Automaton has 3439 states and 4151 transitions. Word has length 201 [2020-09-25 10:12:15,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:15,517 INFO L479 AbstractCegarLoop]: Abstraction has 3439 states and 4151 transitions. [2020-09-25 10:12:15,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:12:15,517 INFO L276 IsEmpty]: Start isEmpty. Operand 3439 states and 4151 transitions. [2020-09-25 10:12:15,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-09-25 10:12:15,522 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:15,523 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:12:15,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:12:15,523 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:15,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:15,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1682680010, now seen corresponding path program 1 times [2020-09-25 10:12:15,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:15,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763135348] [2020-09-25 10:12:15,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:15,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:15,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:15,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:16,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:17,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:17,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-09-25 10:12:17,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:12:17,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1467 [2020-09-25 10:12:17,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:17,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:17,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:12:17,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 10:12:17,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 10:12:17,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:17,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:17,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:17,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:17,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:17,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:17,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:17,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:12:17,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:17,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:17,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:12:17,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:17,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:12:17,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:17,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:17,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:17,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:17,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 10:12:17,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:17,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 10:12:17,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:17,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:17,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:17,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:17,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 10:12:17,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:17,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 10:12:17,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:17,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:17,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:17,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 10:12:17,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:17,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-09-25 10:12:17,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:17,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:17,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:12:17,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:17,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 10:12:17,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:17,833 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:12:17,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763135348] [2020-09-25 10:12:17,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:17,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:12:17,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273491264] [2020-09-25 10:12:17,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:12:17,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:17,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:12:17,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:12:17,836 INFO L87 Difference]: Start difference. First operand 3439 states and 4151 transitions. Second operand 7 states. [2020-09-25 10:12:20,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:20,507 INFO L93 Difference]: Finished difference Result 6874 states and 8569 transitions. [2020-09-25 10:12:20,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:12:20,512 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 237 [2020-09-25 10:12:20,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:20,533 INFO L225 Difference]: With dead ends: 6874 [2020-09-25 10:12:20,533 INFO L226 Difference]: Without dead ends: 4071 [2020-09-25 10:12:20,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:12:20,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4071 states. [2020-09-25 10:12:20,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4071 to 4053. [2020-09-25 10:12:20,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4053 states. [2020-09-25 10:12:20,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4053 states to 4053 states and 4957 transitions. [2020-09-25 10:12:20,669 INFO L78 Accepts]: Start accepts. Automaton has 4053 states and 4957 transitions. Word has length 237 [2020-09-25 10:12:20,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:20,670 INFO L479 AbstractCegarLoop]: Abstraction has 4053 states and 4957 transitions. [2020-09-25 10:12:20,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:12:20,670 INFO L276 IsEmpty]: Start isEmpty. Operand 4053 states and 4957 transitions. [2020-09-25 10:12:20,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-09-25 10:12:20,684 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:20,684 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:12:20,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:12:20,685 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:20,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:20,686 INFO L82 PathProgramCache]: Analyzing trace with hash -711589098, now seen corresponding path program 1 times [2020-09-25 10:12:20,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:20,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090511759] [2020-09-25 10:12:20,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:20,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:20,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:21,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:21,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-09-25 10:12:21,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:21,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 576 [2020-09-25 10:12:21,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:21,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:21,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:12:21,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 294 [2020-09-25 10:12:21,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 10:12:21,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:21,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:21,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:21,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:21,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:21,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:21,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:21,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:12:21,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:21,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:21,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:12:21,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:21,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:12:21,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:21,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:21,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:21,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:21,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:21,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 10:12:21,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:21,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 10:12:21,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:21,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:21,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:12:21,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:21,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:12:21,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:21,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-25 10:12:21,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:21,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:21,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:21,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 10:12:21,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:21,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 10:12:21,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:21,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:21,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:21,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:21,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 10:12:21,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:21,953 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-09-25 10:12:21,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090511759] [2020-09-25 10:12:21,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:21,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 10:12:21,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596742144] [2020-09-25 10:12:21,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:12:21,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:21,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:12:21,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:12:21,958 INFO L87 Difference]: Start difference. First operand 4053 states and 4957 transitions. Second operand 5 states. [2020-09-25 10:12:24,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:24,283 INFO L93 Difference]: Finished difference Result 8074 states and 10141 transitions. [2020-09-25 10:12:24,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 10:12:24,283 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 304 [2020-09-25 10:12:24,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:24,301 INFO L225 Difference]: With dead ends: 8074 [2020-09-25 10:12:24,302 INFO L226 Difference]: Without dead ends: 3843 [2020-09-25 10:12:24,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:12:24,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3843 states. [2020-09-25 10:12:24,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3843 to 3841. [2020-09-25 10:12:24,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3841 states. [2020-09-25 10:12:24,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3841 states to 3841 states and 4579 transitions. [2020-09-25 10:12:24,406 INFO L78 Accepts]: Start accepts. Automaton has 3841 states and 4579 transitions. Word has length 304 [2020-09-25 10:12:24,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:24,407 INFO L479 AbstractCegarLoop]: Abstraction has 3841 states and 4579 transitions. [2020-09-25 10:12:24,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:12:24,407 INFO L276 IsEmpty]: Start isEmpty. Operand 3841 states and 4579 transitions. [2020-09-25 10:12:24,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-09-25 10:12:24,417 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:24,417 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:12:24,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 10:12:24,418 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:24,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:24,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1726897106, now seen corresponding path program 1 times [2020-09-25 10:12:24,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:24,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159026035] [2020-09-25 10:12:24,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:24,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:24,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:24,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:25,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:26,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking...