/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=SHALLOWEST --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_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:59:36,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:59:36,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:59:36,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:59:36,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:59:36,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:59:36,356 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:59:36,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:59:36,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:59:36,366 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:59:36,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:59:36,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:59:36,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:59:36,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:59:36,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:59:36,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:59:36,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:59:36,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:59:36,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:59:36,393 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:59:36,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:59:36,397 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:59:36,398 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:59:36,399 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:59:36,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:59:36,402 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:59:36,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:59:36,405 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:59:36,406 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:59:36,408 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:59:36,408 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:59:36,409 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:59:36,410 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:59:36,411 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:59:36,412 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:59:36,412 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:59:36,413 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:59:36,413 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:59:36,414 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:59:36,415 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:59:36,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:59:36,418 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 [2020-09-24 23:59:36,475 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:59:36,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:59:36,478 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:59:36,478 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:59:36,479 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:59:36,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:59:36,479 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:59:36,480 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:59:36,480 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:59:36,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:59:36,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:59:36,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:59:36,482 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:59:36,482 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:59:36,482 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:59:36,482 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:59:36,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:59:36,483 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:59:36,483 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:59:36,483 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:59:36,484 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:59:36,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:59:36,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:59:36,484 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:59:36,484 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:59:36,485 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:59:36,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:59:36,485 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:59:36,485 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:59:36,485 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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;log-additional-information=true; [2020-09-24 23:59:36,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:59:36,990 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:59:36,994 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:59:36,997 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:59:36,997 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:59:36,998 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label39.c [2020-09-24 23:59:37,092 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be493ea38/826712c997e74f58be41eee2239f9871/FLAGd8d354a95 [2020-09-24 23:59:37,726 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:59:37,727 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label39.c [2020-09-24 23:59:37,750 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be493ea38/826712c997e74f58be41eee2239f9871/FLAGd8d354a95 [2020-09-24 23:59:37,978 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be493ea38/826712c997e74f58be41eee2239f9871 [2020-09-24 23:59:37,993 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:59:38,000 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:59:38,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:59:38,004 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:59:38,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:59:38,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:59:37" (1/1) ... [2020-09-24 23:59:38,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40dc6253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:59:38, skipping insertion in model container [2020-09-24 23:59:38,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:59:37" (1/1) ... [2020-09-24 23:59:38,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:59:38,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:59:38,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:59:38,576 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:59:38,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:59:38,847 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:59:38,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:59:38 WrapperNode [2020-09-24 23:59:38,848 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:59:38,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:59:38,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:59:38,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:59:38,866 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:59:38" (1/1) ... [2020-09-24 23:59:38,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:59:38" (1/1) ... [2020-09-24 23:59:38,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:59:38" (1/1) ... [2020-09-24 23:59:38,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:59:38" (1/1) ... [2020-09-24 23:59:38,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:59:38" (1/1) ... [2020-09-24 23:59:38,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:59:38" (1/1) ... [2020-09-24 23:59:38,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:59:38" (1/1) ... [2020-09-24 23:59:38,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:59:38,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:59:38,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:59:38,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:59:38,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:59:38" (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 [2020-09-24 23:59:39,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:59:39,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:59:39,065 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 23:59:39,065 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:59:39,065 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 23:59:39,065 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:59:39,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 23:59:39,066 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 23:59:39,067 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:59:39,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:59:39,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:59:40,593 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:59:40,593 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 23:59:40,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:59:40 BoogieIcfgContainer [2020-09-24 23:59:40,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:59:40,604 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:59:40,604 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:59:40,608 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:59:40,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:59:37" (1/3) ... [2020-09-24 23:59:40,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b2fc166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:59:40, skipping insertion in model container [2020-09-24 23:59:40,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:59:38" (2/3) ... [2020-09-24 23:59:40,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b2fc166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:59:40, skipping insertion in model container [2020-09-24 23:59:40,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:59:40" (3/3) ... [2020-09-24 23:59:40,614 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label39.c [2020-09-24 23:59:40,628 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:59:40,640 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:59:40,662 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:59:40,698 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:59:40,698 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:59:40,698 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:59:40,698 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:59:40,699 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:59:40,699 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:59:40,699 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:59:40,699 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:59:40,732 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 23:59:40,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-24 23:59:40,743 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:59:40,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:59:40,745 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:59:40,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:59:40,754 INFO L82 PathProgramCache]: Analyzing trace with hash 381272735, now seen corresponding path program 1 times [2020-09-24 23:59:40,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:59:40,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218710973] [2020-09-24 23:59:40,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:59:40,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:59:41,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:41,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:41,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:59:41,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 23:59:41,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:59:41,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 834 [2020-09-24 23:59:41,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:59:41,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:59:41,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:59:41,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 23:59:41,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 23:59:41,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:59:41,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:59:41,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:41,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:59:41,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 23:59:41,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:59:41,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 23:59:41,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:59:41,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:59:41,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:59:41,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:59:41,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 23:59:42,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:59:42,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1218710973] [2020-09-24 23:59:42,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:59:42,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 23:59:42,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362048803] [2020-09-24 23:59:42,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 23:59:42,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:59:42,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 23:59:42,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 23:59:42,053 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 23:59:44,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:59:44,253 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-24 23:59:44,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 23:59:44,257 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-09-24 23:59:44,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:59:44,281 INFO L225 Difference]: With dead ends: 1104 [2020-09-24 23:59:44,282 INFO L226 Difference]: Without dead ends: 578 [2020-09-24 23:59:44,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 23:59:44,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-24 23:59:44,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-24 23:59:44,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-24 23:59:44,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-24 23:59:44,393 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 45 [2020-09-24 23:59:44,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:59:44,394 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-24 23:59:44,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 23:59:44,394 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-24 23:59:44,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-09-24 23:59:44,401 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:59:44,401 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:59:44,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:59:44,402 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:59:44,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:59:44,402 INFO L82 PathProgramCache]: Analyzing trace with hash 2073113520, now seen corresponding path program 1 times [2020-09-24 23:59:44,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:59:44,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912638761] [2020-09-24 23:59:44,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:59:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:59:44,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:44,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:44,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:44,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:44,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:49,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:59:49,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-24 23:59:49,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 23:59:49,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4735 [2020-09-24 23:59:49,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:59:49,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 23:59:49,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:59:49,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-24 23:59:49,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:59:49,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:59:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:59:49,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:49,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:59:49,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 23:59:49,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:59:49,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 23:59:49,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:59:49,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:59:49,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:59:49,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:59:49,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:59:49,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 23:59:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:59:49,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:49,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:49,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:59:49,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 23:59:49,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:59:49,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-09-24 23:59:49,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:59:49,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:59:49,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:59:49,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 23:59:49,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-24 23:59:49,946 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:59:49,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912638761] [2020-09-24 23:59:49,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:59:49,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 23:59:49,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445339795] [2020-09-24 23:59:49,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 23:59:49,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:59:49,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 23:59:49,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 23:59:49,952 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 9 states. [2020-09-24 23:59:50,429 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2020-09-24 23:59:53,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:59:53,328 INFO L93 Difference]: Finished difference Result 1290 states and 1601 transitions. [2020-09-24 23:59:53,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 23:59:53,329 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 124 [2020-09-24 23:59:53,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:59:53,334 INFO L225 Difference]: With dead ends: 1290 [2020-09-24 23:59:53,334 INFO L226 Difference]: Without dead ends: 761 [2020-09-24 23:59:53,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-09-24 23:59:53,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2020-09-24 23:59:53,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 697. [2020-09-24 23:59:53,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-09-24 23:59:53,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 863 transitions. [2020-09-24 23:59:53,376 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 863 transitions. Word has length 124 [2020-09-24 23:59:53,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:59:53,377 INFO L479 AbstractCegarLoop]: Abstraction has 697 states and 863 transitions. [2020-09-24 23:59:53,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 23:59:53,377 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 863 transitions. [2020-09-24 23:59:53,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-24 23:59:53,380 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:59:53,381 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:59:53,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:59:53,381 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:59:53,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:59:53,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1595126062, now seen corresponding path program 1 times [2020-09-24 23:59:53,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:59:53,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710457259] [2020-09-24 23:59:53,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:59:53,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:59:53,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:53,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:53,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:53,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:55,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:55,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:56,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:58,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:59:58,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-24 23:59:58,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 23:59:58,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-24 23:59:58,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:59:58,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 23:59:58,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:59:58,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-24 23:59:58,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:59:58,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:59:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:59:58,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:58,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:59:58,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 23:59:58,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:59:58,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 23:59:58,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:59:58,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:59:58,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:59:58,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 23:59:58,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:59:58,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 23:59:58,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:59:58,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:59:58,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:59:58,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 23:59:58,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:59:58,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-09-24 23:59:58,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:59:58,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:59:58,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:59:58,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 23:59:58,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:59:59,183 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:59:59,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710457259] [2020-09-24 23:59:59,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:59:59,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 23:59:59,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370014248] [2020-09-24 23:59:59,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 23:59:59,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:59:59,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 23:59:59,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-09-24 23:59:59,189 INFO L87 Difference]: Start difference. First operand 697 states and 863 transitions. Second operand 12 states. [2020-09-25 00:00:02,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:00:02,361 INFO L93 Difference]: Finished difference Result 1399 states and 1834 transitions. [2020-09-25 00:00:02,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 00:00:02,362 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 134 [2020-09-25 00:00:02,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:00:02,381 INFO L225 Difference]: With dead ends: 1399 [2020-09-25 00:00:02,381 INFO L226 Difference]: Without dead ends: 834 [2020-09-25 00:00:02,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-09-25 00:00:02,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2020-09-25 00:00:02,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 702. [2020-09-25 00:00:02,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-09-25 00:00:02,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 865 transitions. [2020-09-25 00:00:02,454 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 865 transitions. Word has length 134 [2020-09-25 00:00:02,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:00:02,457 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 865 transitions. [2020-09-25 00:00:02,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 00:00:02,457 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 865 transitions. [2020-09-25 00:00:02,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-09-25 00:00:02,472 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:00:02,472 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:00:02,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:00:02,478 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:00:02,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:00:02,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1321374614, now seen corresponding path program 1 times [2020-09-25 00:00:02,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:00:02,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087464460] [2020-09-25 00:00:02,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:00:02,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:00:02,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:00:02,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:00:02,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:00:03,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:00:03,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:00:03,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:00:03,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:00:04,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:00:04,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:00:06,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:00:07,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:00:07,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-09-25 00:00:07,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 00:00:07,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 00:00:07,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:00:07,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:00:07,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 00:00:07,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-09-25 00:00:07,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:00:07,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:00:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:00:07,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:00:07,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:00:07,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 00:00:07,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:00:07,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 00:00:07,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:00:07,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:00:07,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:00:07,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:00:07,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:00:07,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 00:00:07,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:00:07,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:00:07,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:00:07,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:00:07,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 00:00:07,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:00:07,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 00:00:07,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:00:07,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:00:07,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 00:00:07,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 00:00:07,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:00:07,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 00:00:07,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:00:08,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:00:08,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:00:08,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 00:00:08,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:00:08,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 00:00:08,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:00:08,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:00:08,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 00:00:08,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 00:00:08,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 00:00:08,397 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 61 proven. 65 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 00:00:08,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087464460] [2020-09-25 00:00:08,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:00:08,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 00:00:08,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791728550] [2020-09-25 00:00:08,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 00:00:08,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:00:08,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 00:00:08,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:00:08,403 INFO L87 Difference]: Start difference. First operand 702 states and 865 transitions. Second operand 8 states. [2020-09-25 00:00:10,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:00:10,931 INFO L93 Difference]: Finished difference Result 1492 states and 2022 transitions. [2020-09-25 00:00:10,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 00:00:10,932 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 207 [2020-09-25 00:00:10,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:00:10,941 INFO L225 Difference]: With dead ends: 1492 [2020-09-25 00:00:10,941 INFO L226 Difference]: Without dead ends: 962 [2020-09-25 00:00:10,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-09-25 00:00:10,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2020-09-25 00:00:10,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 860. [2020-09-25 00:00:10,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 860 states. [2020-09-25 00:00:10,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1076 transitions. [2020-09-25 00:00:10,985 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1076 transitions. Word has length 207 [2020-09-25 00:00:10,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:00:10,986 INFO L479 AbstractCegarLoop]: Abstraction has 860 states and 1076 transitions. [2020-09-25 00:00:10,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 00:00:10,987 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1076 transitions. [2020-09-25 00:00:10,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-25 00:00:10,990 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:00:10,990 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 00:00:10,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 00:00:10,991 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:00:10,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:00:10,991 INFO L82 PathProgramCache]: Analyzing trace with hash -877884703, now seen corresponding path program 1 times [2020-09-25 00:00:10,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:00:10,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791909084] [2020-09-25 00:00:10,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:00:11,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:00:11,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:00:11,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:00:11,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:00:12,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:00:12,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:00:13,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:00:16,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:00:16,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-09-25 00:00:16,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 00:00:16,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 00:00:16,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:00:16,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:00:16,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:00:16,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 00:00:16,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:00:16,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:00:16,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:00:16,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:00:16,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:00:16,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 00:00:16,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:00:16,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 00:00:16,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:00:16,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:00:16,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:00:16,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:00:16,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:00:16,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 00:00:16,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:00:16,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:00:16,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:00:16,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 00:00:16,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:00:16,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-25 00:00:16,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:00:16,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:00:16,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 00:00:16,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 00:00:16,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:00:16,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 00:00:16,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:00:16,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:00:16,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:00:16,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 00:00:16,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:00:16,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-09-25 00:00:16,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:00:16,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:00:16,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 00:00:16,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 00:00:16,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:00:16,914 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 61 proven. 9 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 00:00:16,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791909084] [2020-09-25 00:00:16,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:00:16,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 00:00:16,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73664018] [2020-09-25 00:00:16,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 00:00:16,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:00:16,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 00:00:16,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:00:16,917 INFO L87 Difference]: Start difference. First operand 860 states and 1076 transitions. Second operand 9 states. [2020-09-25 00:00:19,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:00:19,831 INFO L93 Difference]: Finished difference Result 1960 states and 2582 transitions. [2020-09-25 00:00:19,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 00:00:19,833 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 213 [2020-09-25 00:00:19,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:00:19,842 INFO L225 Difference]: With dead ends: 1960 [2020-09-25 00:00:19,842 INFO L226 Difference]: Without dead ends: 1272 [2020-09-25 00:00:19,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-09-25 00:00:19,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2020-09-25 00:00:19,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 1216. [2020-09-25 00:00:19,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1216 states. [2020-09-25 00:00:19,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1508 transitions. [2020-09-25 00:00:19,904 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1508 transitions. Word has length 213 [2020-09-25 00:00:19,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:00:19,905 INFO L479 AbstractCegarLoop]: Abstraction has 1216 states and 1508 transitions. [2020-09-25 00:00:19,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 00:00:19,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1508 transitions. [2020-09-25 00:00:19,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-09-25 00:00:19,912 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:00:19,913 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 00:00:19,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 00:00:19,913 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:00:19,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:00:19,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1895586593, now seen corresponding path program 1 times [2020-09-25 00:00:19,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:00:19,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138190282] [2020-09-25 00:00:19,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:00:19,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:00:20,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:00:20,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:00:20,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:00:20,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:00:22,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:00:22,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-09-25 00:00:22,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:00:22,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2786 [2020-09-25 00:00:22,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:00:22,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:00:22,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 00:00:22,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-09-25 00:00:22,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:00:22,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:00:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:00:22,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:00:22,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:00:22,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 00:00:22,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:00:22,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 00:00:22,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:00:22,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:00:22,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:00:22,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 00:00:22,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:00:22,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 00:00:23,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:00:23,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:00:23,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:00:23,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:00:23,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 00:00:23,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:00:23,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-25 00:00:23,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:00:23,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:00:23,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:00:23,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 00:00:23,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:00:23,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 00:00:23,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:00:23,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:00:23,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:00:23,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:00:23,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 00:00:23,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:00:23,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 485 [2020-09-25 00:00:23,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:00:23,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:00:23,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:00:23,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 00:00:23,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0