/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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/Problem01_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:26:16,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:26:16,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:26:16,436 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:26:16,436 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:26:16,437 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:26:16,439 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:26:16,441 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:26:16,443 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:26:16,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:26:16,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:26:16,446 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:26:16,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:26:16,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:26:16,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:26:16,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:26:16,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:26:16,453 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:26:16,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:26:16,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:26:16,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:26:16,459 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:26:16,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:26:16,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:26:16,465 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:26:16,465 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:26:16,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:26:16,466 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:26:16,467 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:26:16,468 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:26:16,468 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:26:16,469 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:26:16,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:26:16,474 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:26:16,475 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:26:16,475 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:26:16,476 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:26:16,476 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:26:16,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:26:16,479 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:26:16,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:26:16,481 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 19:26:16,535 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:26:16,536 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:26:16,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:26:16,538 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:26:16,538 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:26:16,538 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:26:16,539 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:26:16,539 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:26:16,539 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:26:16,539 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:26:16,540 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:26:16,540 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:26:16,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:26:16,540 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:26:16,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:26:16,541 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:26:16,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:26:16,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:26:16,541 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:26:16,541 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:26:16,544 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:26:16,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:26:16,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:26:16,545 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:26:16,545 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:26:16,548 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:26:16,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:26:16,548 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:26:16,548 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:26:16,549 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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:26:16,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:26:17,014 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:26:17,019 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:26:17,020 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:26:17,021 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:26:17,022 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label58.c [2020-09-24 19:26:17,120 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d18de7e07/8a895bf4c67144cab5c22dcab702c66c/FLAG5d4b3a6d5 [2020-09-24 19:26:17,757 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:26:17,758 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label58.c [2020-09-24 19:26:17,773 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d18de7e07/8a895bf4c67144cab5c22dcab702c66c/FLAG5d4b3a6d5 [2020-09-24 19:26:17,999 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d18de7e07/8a895bf4c67144cab5c22dcab702c66c [2020-09-24 19:26:18,013 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:26:18,019 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:26:18,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:26:18,021 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:26:18,025 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:26:18,026 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:26:18" (1/1) ... [2020-09-24 19:26:18,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4734e8fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:18, skipping insertion in model container [2020-09-24 19:26:18,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:26:18" (1/1) ... [2020-09-24 19:26:18,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:26:18,094 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:26:18,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:26:18,582 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:26:18,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:26:18,815 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:26:18,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:18 WrapperNode [2020-09-24 19:26:18,815 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:26:18,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:26:18,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:26:18,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:26:18,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:18" (1/1) ... [2020-09-24 19:26:18,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:18" (1/1) ... [2020-09-24 19:26:18,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:18" (1/1) ... [2020-09-24 19:26:18,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:18" (1/1) ... [2020-09-24 19:26:18,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:18" (1/1) ... [2020-09-24 19:26:18,919 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:18" (1/1) ... [2020-09-24 19:26:18,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:18" (1/1) ... [2020-09-24 19:26:18,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:26:18,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:26:18,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:26:18,932 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:26:18,933 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:18" (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 19:26:19,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:26:19,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:26:19,006 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 19:26:19,006 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:26:19,006 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 19:26:19,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:26:19,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:26:19,006 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 19:26:19,007 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:26:19,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:26:19,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:26:20,381 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:26:20,382 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:26:20,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:26:20 BoogieIcfgContainer [2020-09-24 19:26:20,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:26:20,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:26:20,400 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:26:20,404 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:26:20,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:26:18" (1/3) ... [2020-09-24 19:26:20,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26851755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:26:20, skipping insertion in model container [2020-09-24 19:26:20,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:18" (2/3) ... [2020-09-24 19:26:20,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26851755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:26:20, skipping insertion in model container [2020-09-24 19:26:20,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:26:20" (3/3) ... [2020-09-24 19:26:20,410 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label58.c [2020-09-24 19:26:20,421 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:26:20,435 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:26:20,457 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:26:20,488 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:26:20,488 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:26:20,488 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:26:20,488 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:26:20,489 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:26:20,489 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:26:20,489 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:26:20,489 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:26:20,519 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 19:26:20,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-24 19:26:20,544 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:20,545 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:26:20,546 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:20,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:20,552 INFO L82 PathProgramCache]: Analyzing trace with hash 2032478133, now seen corresponding path program 1 times [2020-09-24 19:26:20,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:20,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800467740] [2020-09-24 19:26:20,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:20,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:21,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:21,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:21,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:21,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:21,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-24 19:26:21,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:26:21,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1010 [2020-09-24 19:26:21,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:21,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:26:21,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 19:26:21,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-24 19:26:21,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:26:22,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:22,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:22,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:22,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:22,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:22,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:22,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 19:26:22,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:22,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:22,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:22,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 19:26:22,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:22,182 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 19:26:22,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800467740] [2020-09-24 19:26:22,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:26:22,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:26:22,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289434704] [2020-09-24 19:26:22,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:26:22,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:22,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:26:22,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:26:22,222 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-24 19:26:24,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:24,374 INFO L93 Difference]: Finished difference Result 1270 states and 1669 transitions. [2020-09-24 19:26:24,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:26:24,377 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-09-24 19:26:24,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:24,401 INFO L225 Difference]: With dead ends: 1270 [2020-09-24 19:26:24,401 INFO L226 Difference]: Without dead ends: 696 [2020-09-24 19:26:24,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:26:24,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-24 19:26:24,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 603. [2020-09-24 19:26:24,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-24 19:26:24,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 731 transitions. [2020-09-24 19:26:24,510 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 731 transitions. Word has length 127 [2020-09-24 19:26:24,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:24,512 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 731 transitions. [2020-09-24 19:26:24,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:26:24,512 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 731 transitions. [2020-09-24 19:26:24,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-24 19:26:24,522 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:24,523 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:26:24,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:26:24,523 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:24,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:24,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1441250023, now seen corresponding path program 1 times [2020-09-24 19:26:24,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:24,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75110242] [2020-09-24 19:26:24,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:24,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:24,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:24,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:24,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:25,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:25,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:25,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-24 19:26:25,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:26:25,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1112 [2020-09-24 19:26:25,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:25,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:26:25,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 19:26:25,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:26:25,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:25,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:25,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:25,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:25,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:25,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:25,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:25,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 19:26:25,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:25,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:25,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:25,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:26:25,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:25,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:25,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:25,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:25,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:25,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:26:25,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:25,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-24 19:26:25,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:25,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:25,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:25,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 19:26:25,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:25,937 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:26:25,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75110242] [2020-09-24 19:26:25,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:26:25,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 19:26:25,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937138923] [2020-09-24 19:26:25,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:26:25,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:25,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:26:25,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:26:25,941 INFO L87 Difference]: Start difference. First operand 603 states and 731 transitions. Second operand 8 states. [2020-09-24 19:26:28,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:28,889 INFO L93 Difference]: Finished difference Result 1938 states and 2501 transitions. [2020-09-24 19:26:28,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 19:26:28,890 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 149 [2020-09-24 19:26:28,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:28,902 INFO L225 Difference]: With dead ends: 1938 [2020-09-24 19:26:28,902 INFO L226 Difference]: Without dead ends: 1359 [2020-09-24 19:26:28,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-24 19:26:28,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1359 states. [2020-09-24 19:26:28,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1359 to 1240. [2020-09-24 19:26:28,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1240 states. [2020-09-24 19:26:28,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1570 transitions. [2020-09-24 19:26:28,996 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1570 transitions. Word has length 149 [2020-09-24 19:26:28,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:28,997 INFO L479 AbstractCegarLoop]: Abstraction has 1240 states and 1570 transitions. [2020-09-24 19:26:28,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:26:28,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1570 transitions. [2020-09-24 19:26:29,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-24 19:26:29,005 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:29,005 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:26:29,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:26:29,006 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:29,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:29,006 INFO L82 PathProgramCache]: Analyzing trace with hash -572807862, now seen corresponding path program 1 times [2020-09-24 19:26:29,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:29,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770603729] [2020-09-24 19:26:29,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:29,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:29,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:29,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:29,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:30,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:30,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-24 19:26:30,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:26:30,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-09-24 19:26:30,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:30,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:30,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-24 19:26:30,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-24 19:26:30,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:30,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:30,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:30,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:30,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:30,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:30,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 19:26:30,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:30,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:30,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:30,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:30,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:30,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:30,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:30,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:30,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:26:30,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:30,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 19:26:30,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:30,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:30,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:30,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 19:26:30,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:30,396 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:26:30,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770603729] [2020-09-24 19:26:30,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:30,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:26:30,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887352938] [2020-09-24 19:26:30,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:26:30,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:30,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:26:30,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:26:30,399 INFO L87 Difference]: Start difference. First operand 1240 states and 1570 transitions. Second operand 5 states. [2020-09-24 19:26:32,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:32,135 INFO L93 Difference]: Finished difference Result 3065 states and 3962 transitions. [2020-09-24 19:26:32,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:26:32,135 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-24 19:26:32,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:32,155 INFO L225 Difference]: With dead ends: 3065 [2020-09-24 19:26:32,156 INFO L226 Difference]: Without dead ends: 1849 [2020-09-24 19:26:32,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:26:32,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2020-09-24 19:26:32,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 1671. [2020-09-24 19:26:32,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1671 states. [2020-09-24 19:26:32,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 2153 transitions. [2020-09-24 19:26:32,246 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 2153 transitions. Word has length 156 [2020-09-24 19:26:32,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:32,248 INFO L479 AbstractCegarLoop]: Abstraction has 1671 states and 2153 transitions. [2020-09-24 19:26:32,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:26:32,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 2153 transitions. [2020-09-24 19:26:32,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-24 19:26:32,260 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:32,260 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:26:32,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:26:32,261 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:32,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:32,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1225030518, now seen corresponding path program 1 times [2020-09-24 19:26:32,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:32,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260848949] [2020-09-24 19:26:32,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:32,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:32,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:32,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:33,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:33,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:33,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-24 19:26:33,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:26:33,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1127 [2020-09-24 19:26:33,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:33,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:33,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 19:26:33,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 19:26:33,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:33,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:33,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:33,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:33,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:33,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:33,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:33,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:26:33,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:33,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:33,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:33,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:33,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:33,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:33,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:33,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:33,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:26:33,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:33,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 19:26:33,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:33,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:33,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:33,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:26:33,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:33,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 19:26:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:33,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:33,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:33,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:26:33,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:33,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-24 19:26:33,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:33,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:33,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:33,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 19:26:33,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:33,750 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:26:33,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260848949] [2020-09-24 19:26:33,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:33,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:26:33,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672448807] [2020-09-24 19:26:33,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:26:33,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:33,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:26:33,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:26:33,753 INFO L87 Difference]: Start difference. First operand 1671 states and 2153 transitions. Second operand 7 states. [2020-09-24 19:26:35,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:35,888 INFO L93 Difference]: Finished difference Result 3589 states and 4709 transitions. [2020-09-24 19:26:35,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:26:35,889 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2020-09-24 19:26:35,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:35,901 INFO L225 Difference]: With dead ends: 3589 [2020-09-24 19:26:35,901 INFO L226 Difference]: Without dead ends: 1942 [2020-09-24 19:26:35,908 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 [2020-09-24 19:26:35,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1942 states. [2020-09-24 19:26:35,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1942 to 1708. [2020-09-24 19:26:35,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1708 states. [2020-09-24 19:26:35,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1708 states to 1708 states and 2196 transitions. [2020-09-24 19:26:35,967 INFO L78 Accepts]: Start accepts. Automaton has 1708 states and 2196 transitions. Word has length 181 [2020-09-24 19:26:35,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:35,968 INFO L479 AbstractCegarLoop]: Abstraction has 1708 states and 2196 transitions. [2020-09-24 19:26:35,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:26:35,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1708 states and 2196 transitions. [2020-09-24 19:26:35,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-09-24 19:26:35,975 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:35,976 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:26:35,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:26:35,976 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:35,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:35,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1950914187, now seen corresponding path program 1 times [2020-09-24 19:26:35,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:35,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706267509] [2020-09-24 19:26:35,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:36,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:36,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:36,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:36,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:37,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:37,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-24 19:26:37,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:26:37,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-09-24 19:26:37,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:37,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:26:37,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-24 19:26:37,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 19:26:37,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:37,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:37,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:37,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:37,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:37,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:37,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:26:37,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:37,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:37,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:37,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:37,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:37,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:37,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:37,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:37,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:37,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:26:37,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:37,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 19:26:37,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:37,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:26:37,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:37,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 19:26:37,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:37,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 19:26:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:37,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:37,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:37,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:26:37,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:37,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-24 19:26:37,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:37,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:37,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:37,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 19:26:37,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:37,432 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:26:37,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706267509] [2020-09-24 19:26:37,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:37,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:26:37,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268886508] [2020-09-24 19:26:37,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:26:37,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:37,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:26:37,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:26:37,436 INFO L87 Difference]: Start difference. First operand 1708 states and 2196 transitions. Second operand 8 states. [2020-09-24 19:26:38,291 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-09-24 19:26:41,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:41,105 INFO L93 Difference]: Finished difference Result 5173 states and 6982 transitions. [2020-09-24 19:26:41,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 19:26:41,106 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 188 [2020-09-24 19:26:41,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:41,125 INFO L225 Difference]: With dead ends: 5173 [2020-09-24 19:26:41,126 INFO L226 Difference]: Without dead ends: 3489 [2020-09-24 19:26:41,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-09-24 19:26:41,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3489 states. [2020-09-24 19:26:41,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3489 to 2492. [2020-09-24 19:26:41,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2492 states. [2020-09-24 19:26:41,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2492 states to 2492 states and 3166 transitions. [2020-09-24 19:26:41,233 INFO L78 Accepts]: Start accepts. Automaton has 2492 states and 3166 transitions. Word has length 188 [2020-09-24 19:26:41,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:41,233 INFO L479 AbstractCegarLoop]: Abstraction has 2492 states and 3166 transitions. [2020-09-24 19:26:41,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:26:41,233 INFO L276 IsEmpty]: Start isEmpty. Operand 2492 states and 3166 transitions. [2020-09-24 19:26:41,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-09-24 19:26:41,246 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:41,246 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:41,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:26:41,247 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:41,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:41,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1837874951, now seen corresponding path program 1 times [2020-09-24 19:26:41,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:41,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760905933] [2020-09-24 19:26:41,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:41,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:41,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:41,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:41,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:42,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:42,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-09-24 19:26:42,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:26:42,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1014 [2020-09-24 19:26:42,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:42,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:26:42,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 19:26:42,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 19:26:42,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:42,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:42,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:42,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:42,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:42,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:42,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:42,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 19:26:42,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:42,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:42,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:42,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 19:26:42,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:42,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:42,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:42,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:42,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:42,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:26:42,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:42,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 19:26:42,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:42,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:42,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:42,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 19:26:42,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:42,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 19:26:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:42,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:42,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:42,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 19:26:42,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:42,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 19:26:42,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:42,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:42,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 19:26:42,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:42,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:42,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-24 19:26:42,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:42,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:42,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:42,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:26:42,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:42,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 19:26:42,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:42,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:42,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 19:26:42,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:42,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:42,773 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 70 proven. 20 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-09-24 19:26:42,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760905933] [2020-09-24 19:26:42,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:42,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:26:42,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086232121] [2020-09-24 19:26:42,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:26:42,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:42,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:26:42,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:26:42,778 INFO L87 Difference]: Start difference. First operand 2492 states and 3166 transitions. Second operand 7 states. [2020-09-24 19:26:44,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:44,771 INFO L93 Difference]: Finished difference Result 5941 states and 7668 transitions. [2020-09-24 19:26:44,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:26:44,772 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 226 [2020-09-24 19:26:44,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:44,789 INFO L225 Difference]: With dead ends: 5941 [2020-09-24 19:26:44,790 INFO L226 Difference]: Without dead ends: 3473 [2020-09-24 19:26:44,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:26:44,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3473 states. [2020-09-24 19:26:44,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3473 to 3404. [2020-09-24 19:26:44,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3404 states. [2020-09-24 19:26:44,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3404 states to 3404 states and 4323 transitions. [2020-09-24 19:26:44,886 INFO L78 Accepts]: Start accepts. Automaton has 3404 states and 4323 transitions. Word has length 226 [2020-09-24 19:26:44,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:44,887 INFO L479 AbstractCegarLoop]: Abstraction has 3404 states and 4323 transitions. [2020-09-24 19:26:44,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:26:44,887 INFO L276 IsEmpty]: Start isEmpty. Operand 3404 states and 4323 transitions. [2020-09-24 19:26:44,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-09-24 19:26:44,901 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:44,902 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 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 19:26:44,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:26:44,902 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:44,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:44,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1557409046, now seen corresponding path program 1 times [2020-09-24 19:26:44,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:44,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953634977] [2020-09-24 19:26:44,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:44,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:44,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:45,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:45,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:45,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:45,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:45,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:45,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:45,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:45,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:45,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:45,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-09-24 19:26:45,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 19:26:45,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1006 [2020-09-24 19:26:45,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:45,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:45,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 19:26:45,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 19:26:45,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:46,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:46,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:46,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:46,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:46,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:46,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:46,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:26:46,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:46,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:46,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:46,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:46,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:46,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:46,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:46,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:46,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:46,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:26:46,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:46,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 19:26:46,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:46,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:46,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:46,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:26:46,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:46,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 19:26:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:46,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:46,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:46,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:26:46,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:46,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-24 19:26:46,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:46,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:46,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:46,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 19:26:46,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:46,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-24 19:26:46,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:46,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:46,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:46,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 19:26:46,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:46,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 19:26:46,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:46,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:46,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 19:26:46,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:46,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:46,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-24 19:26:46,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:46,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:46,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:46,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:26:46,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:46,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 19:26:46,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:46,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:46,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 19:26:46,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:46,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:46,429 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 116 proven. 26 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-09-24 19:26:46,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953634977] [2020-09-24 19:26:46,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:46,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:26:46,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842666508] [2020-09-24 19:26:46,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:26:46,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:46,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:26:46,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:26:46,432 INFO L87 Difference]: Start difference. First operand 3404 states and 4323 transitions. Second operand 7 states. [2020-09-24 19:26:48,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:48,646 INFO L93 Difference]: Finished difference Result 7917 states and 10364 transitions. [2020-09-24 19:26:48,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:26:48,646 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 247 [2020-09-24 19:26:48,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:48,669 INFO L225 Difference]: With dead ends: 7917 [2020-09-24 19:26:48,670 INFO L226 Difference]: Without dead ends: 4678 [2020-09-24 19:26:48,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:26:48,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4678 states. [2020-09-24 19:26:48,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4678 to 4300. [2020-09-24 19:26:48,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4300 states. [2020-09-24 19:26:48,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4300 states to 4300 states and 5327 transitions. [2020-09-24 19:26:48,808 INFO L78 Accepts]: Start accepts. Automaton has 4300 states and 5327 transitions. Word has length 247 [2020-09-24 19:26:48,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:48,808 INFO L479 AbstractCegarLoop]: Abstraction has 4300 states and 5327 transitions. [2020-09-24 19:26:48,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:26:48,808 INFO L276 IsEmpty]: Start isEmpty. Operand 4300 states and 5327 transitions. [2020-09-24 19:26:48,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-09-24 19:26:48,826 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:48,826 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 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 19:26:48,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:26:48,827 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:48,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:48,827 INFO L82 PathProgramCache]: Analyzing trace with hash 251381653, now seen corresponding path program 1 times [2020-09-24 19:26:48,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:48,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258454108] [2020-09-24 19:26:48,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:48,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:48,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:48,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:49,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:49,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:49,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:49,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:49,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-09-24 19:26:49,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:26:49,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1029 [2020-09-24 19:26:49,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:49,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:26:49,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-09-24 19:26:49,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 19:26:49,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:49,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:49,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:49,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:49,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:49,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:49,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:49,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:26:49,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:49,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:50,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:50,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:50,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:50,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:50,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:50,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:50,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:50,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:26:50,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:50,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:26:50,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:50,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:50,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:50,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:50,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:50,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-24 19:26:50,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:50,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:50,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:50,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:26:50,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:50,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-24 19:26:50,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:50,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:26:50,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:50,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 19:26:50,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:50,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-24 19:26:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:50,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:50,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:50,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:26:50,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:50,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-24 19:26:50,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:50,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:50,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:50,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 19:26:50,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:50,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 19:26:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:50,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:50,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:50,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 19:26:50,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:50,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 19:26:50,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:50,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:50,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 19:26:50,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:50,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:50,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-24 19:26:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:50,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:50,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:50,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:26:50,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:50,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 19:26:50,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:50,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:50,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 19:26:50,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:50,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:50,506 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 175 proven. 26 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-09-24 19:26:50,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258454108] [2020-09-24 19:26:50,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:50,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:26:50,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26572825] [2020-09-24 19:26:50,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:26:50,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:50,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:26:50,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:26:50,509 INFO L87 Difference]: Start difference. First operand 4300 states and 5327 transitions. Second operand 8 states. [2020-09-24 19:26:53,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:53,824 INFO L93 Difference]: Finished difference Result 9926 states and 12507 transitions. [2020-09-24 19:26:53,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 19:26:53,830 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 272 [2020-09-24 19:26:53,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:53,853 INFO L225 Difference]: With dead ends: 9926 [2020-09-24 19:26:53,854 INFO L226 Difference]: Without dead ends: 5791 [2020-09-24 19:26:53,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-09-24 19:26:53,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5791 states. [2020-09-24 19:26:53,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5791 to 4866. [2020-09-24 19:26:53,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4866 states. [2020-09-24 19:26:53,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4866 states to 4866 states and 6003 transitions. [2020-09-24 19:26:53,987 INFO L78 Accepts]: Start accepts. Automaton has 4866 states and 6003 transitions. Word has length 272 [2020-09-24 19:26:53,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:53,988 INFO L479 AbstractCegarLoop]: Abstraction has 4866 states and 6003 transitions. [2020-09-24 19:26:53,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:26:53,988 INFO L276 IsEmpty]: Start isEmpty. Operand 4866 states and 6003 transitions. [2020-09-24 19:26:54,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-09-24 19:26:54,007 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:54,008 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 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 19:26:54,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:26:54,008 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:54,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:54,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1742918205, now seen corresponding path program 1 times [2020-09-24 19:26:54,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:54,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849290262] [2020-09-24 19:26:54,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:54,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:54,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:54,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:54,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:54,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:54,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:55,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:55,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-09-24 19:26:55,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:26:55,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1033 [2020-09-24 19:26:55,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:55,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:55,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-24 19:26:55,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 19:26:55,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:55,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:55,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:55,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:55,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:55,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:55,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:26:55,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:55,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:55,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:55,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:55,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:55,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:55,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:55,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:55,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:55,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:26:55,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:55,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:26:55,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:55,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:55,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:55,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:55,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:55,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-24 19:26:55,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:55,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:55,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:55,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 19:26:55,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:55,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 19:26:55,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:55,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:55,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:55,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 19:26:55,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:55,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-24 19:26:55,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:55,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:55,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:55,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:26:55,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:55,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 19:26:55,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:55,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:55,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:55,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 19:26:55,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:55,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-24 19:26:55,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:55,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:55,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:55,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 19:26:55,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:55,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 19:26:55,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:55,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:55,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 19:26:55,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:55,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:55,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-24 19:26:55,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:55,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:55,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:55,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:26:55,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:55,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 19:26:55,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:55,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:55,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 19:26:55,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:55,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:55,684 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 177 proven. 26 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-24 19:26:55,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849290262] [2020-09-24 19:26:55,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:55,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:26:55,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711495244] [2020-09-24 19:26:55,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:26:55,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:55,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:26:55,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:26:55,686 INFO L87 Difference]: Start difference. First operand 4866 states and 6003 transitions. Second operand 7 states. [2020-09-24 19:26:58,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:58,184 INFO L93 Difference]: Finished difference Result 10461 states and 12891 transitions. [2020-09-24 19:26:58,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 19:26:58,185 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 275 [2020-09-24 19:26:58,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:58,207 INFO L225 Difference]: With dead ends: 10461 [2020-09-24 19:26:58,207 INFO L226 Difference]: Without dead ends: 5760 [2020-09-24 19:26:58,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-24 19:26:58,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5760 states. [2020-09-24 19:26:58,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5760 to 5456. [2020-09-24 19:26:58,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5456 states. [2020-09-24 19:26:58,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5456 states to 5456 states and 6706 transitions. [2020-09-24 19:26:58,366 INFO L78 Accepts]: Start accepts. Automaton has 5456 states and 6706 transitions. Word has length 275 [2020-09-24 19:26:58,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:58,367 INFO L479 AbstractCegarLoop]: Abstraction has 5456 states and 6706 transitions. [2020-09-24 19:26:58,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:26:58,367 INFO L276 IsEmpty]: Start isEmpty. Operand 5456 states and 6706 transitions. [2020-09-24 19:26:58,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-09-24 19:26:58,389 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:58,389 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 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 19:26:58,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:26:58,390 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:58,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:58,390 INFO L82 PathProgramCache]: Analyzing trace with hash 853604956, now seen corresponding path program 1 times [2020-09-24 19:26:58,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:58,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665045277] [2020-09-24 19:26:58,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:58,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:58,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:58,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:58,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:58,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:59,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:59,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:59,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 305 [2020-09-24 19:26:59,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:26:59,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 19:26:59,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:59,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:26:59,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-09-24 19:26:59,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 19:26:59,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:59,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:59,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:59,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:59,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:59,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:59,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 19:26:59,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:59,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:59,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:59,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:59,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:59,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:59,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:59,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:59,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:59,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:26:59,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:59,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:26:59,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:59,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:59,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:59,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:59,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:59,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-24 19:26:59,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:59,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:59,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:59,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 19:26:59,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:59,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-24 19:26:59,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:59,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:26:59,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:59,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 19:26:59,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:59,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 19:26:59,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:59,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:59,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:59,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:26:59,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:59,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 19:26:59,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:59,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:59,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:59,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 19:26:59,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:59,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-24 19:26:59,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:59,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:59,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:59,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 19:26:59,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:59,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 19:26:59,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:59,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:59,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 19:26:59,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:59,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:59,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-09-24 19:26:59,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:59,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:59,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:59,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:26:59,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:59,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 19:26:59,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:59,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:59,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 19:26:59,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:59,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:59,916 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 189 proven. 26 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-09-24 19:26:59,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665045277] [2020-09-24 19:26:59,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:59,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:26:59,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604091647] [2020-09-24 19:26:59,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:26:59,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:59,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:26:59,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:26:59,919 INFO L87 Difference]: Start difference. First operand 5456 states and 6706 transitions. Second operand 8 states. [2020-09-24 19:27:01,306 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-09-24 19:27:03,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:27:03,385 INFO L93 Difference]: Finished difference Result 11659 states and 14393 transitions. [2020-09-24 19:27:03,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 19:27:03,385 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 286 [2020-09-24 19:27:03,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:27:03,406 INFO L225 Difference]: With dead ends: 11659 [2020-09-24 19:27:03,406 INFO L226 Difference]: Without dead ends: 6128 [2020-09-24 19:27:03,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-09-24 19:27:03,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6128 states. [2020-09-24 19:27:03,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6128 to 5820. [2020-09-24 19:27:03,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5820 states. [2020-09-24 19:27:03,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5820 states to 5820 states and 6701 transitions. [2020-09-24 19:27:03,543 INFO L78 Accepts]: Start accepts. Automaton has 5820 states and 6701 transitions. Word has length 286 [2020-09-24 19:27:03,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:27:03,543 INFO L479 AbstractCegarLoop]: Abstraction has 5820 states and 6701 transitions. [2020-09-24 19:27:03,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:27:03,543 INFO L276 IsEmpty]: Start isEmpty. Operand 5820 states and 6701 transitions. [2020-09-24 19:27:03,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-09-24 19:27:03,563 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:27:03,564 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:27:03,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 19:27:03,564 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:27:03,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:27:03,565 INFO L82 PathProgramCache]: Analyzing trace with hash 353242682, now seen corresponding path program 1 times [2020-09-24 19:27:03,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:27:03,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532619350] [2020-09-24 19:27:03,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:27:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:03,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:03,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:03,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:04,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:04,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:04,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:04,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 362 [2020-09-24 19:27:04,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:27:04,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1023 [2020-09-24 19:27:04,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:04,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:27:04,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 19:27:04,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 19:27:04,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:27:04,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:27:04,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:04,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:04,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:04,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:27:04,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:04,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 19:27:04,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:04,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:27:04,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:27:04,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:27:04,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:27:04,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:27:04,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:04,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:04,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:04,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:27:04,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:04,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 19:27:04,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:04,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:27:04,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:27:04,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 19:27:04,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:27:04,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-24 19:27:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:04,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:04,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:04,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:27:04,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:04,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-24 19:27:04,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:04,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:27:04,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:27:04,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:27:04,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:27:04,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-24 19:27:04,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:04,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:04,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:04,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 19:27:04,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:04,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 19:27:04,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:04,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:27:04,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-24 19:27:04,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:27:04,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:27:04,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-24 19:27:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:04,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:05,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:05,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:27:05,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:05,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 19:27:05,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:05,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:27:05,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 19:27:05,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:27:05,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:27:05,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-09-24 19:27:05,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:05,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:05,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:05,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 19:27:05,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:05,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-24 19:27:05,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:05,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:27:05,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-24 19:27:05,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:27:05,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:27:05,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-09-24 19:27:05,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:05,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:05,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:05,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:27:05,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:05,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 19:27:05,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:05,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:27:05,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 19:27:05,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:27:05,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:27:05,417 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 210 proven. 62 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2020-09-24 19:27:05,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532619350] [2020-09-24 19:27:05,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:27:05,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:27:05,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354764024] [2020-09-24 19:27:05,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:27:05,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:27:05,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:27:05,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:27:05,420 INFO L87 Difference]: Start difference. First operand 5820 states and 6701 transitions. Second operand 8 states. [2020-09-24 19:27:06,955 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-09-24 19:27:07,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:27:07,648 INFO L93 Difference]: Finished difference Result 11199 states and 12939 transitions. [2020-09-24 19:27:07,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 19:27:07,648 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 341 [2020-09-24 19:27:07,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:27:07,662 INFO L225 Difference]: With dead ends: 11199 [2020-09-24 19:27:07,662 INFO L226 Difference]: Without dead ends: 5544 [2020-09-24 19:27:07,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-09-24 19:27:07,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5544 states. [2020-09-24 19:27:07,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5544 to 5532. [2020-09-24 19:27:07,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5532 states. [2020-09-24 19:27:07,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5532 states to 5532 states and 6381 transitions. [2020-09-24 19:27:07,774 INFO L78 Accepts]: Start accepts. Automaton has 5532 states and 6381 transitions. Word has length 341 [2020-09-24 19:27:07,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:27:07,775 INFO L479 AbstractCegarLoop]: Abstraction has 5532 states and 6381 transitions. [2020-09-24 19:27:07,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:27:07,775 INFO L276 IsEmpty]: Start isEmpty. Operand 5532 states and 6381 transitions. [2020-09-24 19:27:07,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-09-24 19:27:07,791 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:27:07,792 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:27:07,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 19:27:07,792 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:27:07,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:27:07,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1068774361, now seen corresponding path program 1 times [2020-09-24 19:27:07,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:27:07,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094060750] [2020-09-24 19:27:07,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:27:07,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:07,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking...