/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=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/Problem14_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:26:13,853 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:26:13,857 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:26:13,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:26:13,900 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:26:13,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:26:13,906 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:26:13,909 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:26:13,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:26:13,914 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:26:13,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:26:13,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:26:13,919 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:26:13,921 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:26:13,922 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:26:13,924 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:26:13,925 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:26:13,926 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:26:13,928 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:26:13,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:26:13,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:26:13,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:26:13,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:26:13,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:26:13,944 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:26:13,944 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:26:13,944 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:26:13,947 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:26:13,947 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:26:13,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:26:13,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:26:13,958 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:26:13,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:26:13,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:26:13,967 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:26:13,967 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:26:13,968 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:26:13,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:26:13,969 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:26:13,972 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:26:13,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:26:13,973 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 18:26:14,018 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:26:14,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:26:14,020 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:26:14,020 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:26:14,020 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:26:14,020 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:26:14,021 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:26:14,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:26:14,021 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:26:14,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:26:14,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:26:14,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:26:14,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:26:14,023 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:26:14,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:26:14,023 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:26:14,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:26:14,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:26:14,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:26:14,024 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:26:14,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:26:14,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:26:14,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:26:14,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:26:14,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:26:14,025 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:26:14,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:26:14,026 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:26:14,026 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:26:14,026 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=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=5000;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=5000;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=5000;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=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 18:26:14,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:26:14,464 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:26:14,469 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:26:14,470 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:26:14,471 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:26:14,472 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label30.c [2020-09-24 18:26:14,550 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b735f82b/8dfdc4262c644eb8a9ce32870e5a10a3/FLAG34be82477 [2020-09-24 18:26:15,212 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:26:15,213 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label30.c [2020-09-24 18:26:15,233 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b735f82b/8dfdc4262c644eb8a9ce32870e5a10a3/FLAG34be82477 [2020-09-24 18:26:15,383 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b735f82b/8dfdc4262c644eb8a9ce32870e5a10a3 [2020-09-24 18:26:15,395 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:26:15,400 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:26:15,402 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:26:15,402 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:26:15,406 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:26:15,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:26:15" (1/1) ... [2020-09-24 18:26:15,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad15a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:26:15, skipping insertion in model container [2020-09-24 18:26:15,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:26:15" (1/1) ... [2020-09-24 18:26:15,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:26:15,491 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:26:16,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:26:16,019 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:26:16,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:26:16,318 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:26:16,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:26:16 WrapperNode [2020-09-24 18:26:16,321 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:26:16,322 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:26:16,322 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:26:16,322 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:26:16,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:26:16" (1/1) ... [2020-09-24 18:26:16,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:26:16" (1/1) ... [2020-09-24 18:26:16,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:26:16" (1/1) ... [2020-09-24 18:26:16,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:26:16" (1/1) ... [2020-09-24 18:26:16,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:26:16" (1/1) ... [2020-09-24 18:26:16,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:26:16" (1/1) ... [2020-09-24 18:26:16,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:26:16" (1/1) ... [2020-09-24 18:26:16,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:26:16,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:26:16,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:26:16,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:26:16,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:26:16" (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 18:26:16,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:26:16,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:26:16,612 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:26:16,612 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:26:16,612 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:26:16,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:26:16,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:26:16,613 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:26:16,614 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:26:16,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:26:16,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:26:18,396 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:26:18,396 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:26:18,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:26:18 BoogieIcfgContainer [2020-09-24 18:26:18,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:26:18,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:26:18,407 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:26:18,411 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:26:18,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:26:15" (1/3) ... [2020-09-24 18:26:18,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23cc67b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:26:18, skipping insertion in model container [2020-09-24 18:26:18,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:26:16" (2/3) ... [2020-09-24 18:26:18,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23cc67b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:26:18, skipping insertion in model container [2020-09-24 18:26:18,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:26:18" (3/3) ... [2020-09-24 18:26:18,415 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label30.c [2020-09-24 18:26:18,427 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:26:18,438 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:26:18,458 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:26:18,493 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:26:18,494 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:26:18,494 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:26:18,494 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:26:18,494 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:26:18,494 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:26:18,495 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:26:18,495 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:26:18,528 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-24 18:26:18,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-24 18:26:18,539 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:26:18,540 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] [2020-09-24 18:26:18,541 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:26:18,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:26:18,549 INFO L82 PathProgramCache]: Analyzing trace with hash 2082104676, now seen corresponding path program 1 times [2020-09-24 18:26:18,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:26:18,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803898826] [2020-09-24 18:26:18,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:26:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:18,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:19,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:19,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:19,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 18:26:19,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:26:19,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 738 [2020-09-24 18:26:19,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:19,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:26:19,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 18:26:19,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-24 18:26:19,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:26:19,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:26:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:19,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:19,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:19,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:26:19,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:19,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 18:26:19,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:19,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:26:19,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:19,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:26:19,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:19,652 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 18:26:19,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803898826] [2020-09-24 18:26:19,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:26:19,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:26:19,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420464416] [2020-09-24 18:26:19,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:26:19,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:26:19,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:26:19,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:26:19,683 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 4 states. [2020-09-24 18:26:22,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:26:22,348 INFO L93 Difference]: Finished difference Result 1564 states and 2106 transitions. [2020-09-24 18:26:22,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:26:22,351 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-09-24 18:26:22,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:26:22,388 INFO L225 Difference]: With dead ends: 1564 [2020-09-24 18:26:22,388 INFO L226 Difference]: Without dead ends: 828 [2020-09-24 18:26:22,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:26:22,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-09-24 18:26:22,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 806. [2020-09-24 18:26:22,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-24 18:26:22,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 982 transitions. [2020-09-24 18:26:22,575 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 982 transitions. Word has length 62 [2020-09-24 18:26:22,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:26:22,576 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 982 transitions. [2020-09-24 18:26:22,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:26:22,576 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 982 transitions. [2020-09-24 18:26:22,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-24 18:26:22,584 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:26:22,584 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 18:26:22,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:26:22,585 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:26:22,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:26:22,586 INFO L82 PathProgramCache]: Analyzing trace with hash 824518871, now seen corresponding path program 1 times [2020-09-24 18:26:22,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:26:22,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749838883] [2020-09-24 18:26:22,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:26:22,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:22,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:22,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:23,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:23,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:23,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:24,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:25,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:27,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:27,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-24 18:26:27,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:26:27,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-24 18:26:27,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:27,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:26:27,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-09-24 18:26:27,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 18:26:27,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:26:27,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:26:27,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:27,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:27,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:27,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:26:27,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:27,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:26:27,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:27,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:26:27,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:27,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:26:27,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:26:27,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:26:27,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:27,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:27,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:27,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 18:26:27,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:27,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 18:26:27,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:27,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:26:27,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:27,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-24 18:26:27,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-24 18:26:27,930 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:26:27,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749838883] [2020-09-24 18:26:27,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:26:27,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:26:27,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421527725] [2020-09-24 18:26:27,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:26:27,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:26:27,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:26:27,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:26:27,935 INFO L87 Difference]: Start difference. First operand 806 states and 982 transitions. Second operand 5 states. [2020-09-24 18:26:30,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:26:30,357 INFO L93 Difference]: Finished difference Result 1816 states and 2293 transitions. [2020-09-24 18:26:30,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:26:30,358 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-09-24 18:26:30,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:26:30,364 INFO L225 Difference]: With dead ends: 1816 [2020-09-24 18:26:30,365 INFO L226 Difference]: Without dead ends: 1025 [2020-09-24 18:26:30,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:26:30,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2020-09-24 18:26:30,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 997. [2020-09-24 18:26:30,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-09-24 18:26:30,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1182 transitions. [2020-09-24 18:26:30,396 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1182 transitions. Word has length 141 [2020-09-24 18:26:30,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:26:30,396 INFO L479 AbstractCegarLoop]: Abstraction has 997 states and 1182 transitions. [2020-09-24 18:26:30,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:26:30,397 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1182 transitions. [2020-09-24 18:26:30,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-09-24 18:26:30,403 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:26:30,403 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:26:30,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:26:30,404 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:26:30,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:26:30,404 INFO L82 PathProgramCache]: Analyzing trace with hash 892447597, now seen corresponding path program 1 times [2020-09-24 18:26:30,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:26:30,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691432518] [2020-09-24 18:26:30,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:26:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:30,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:30,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:30,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:30,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:31,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:32,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:32,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:33,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:34,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:34,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:34,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:34,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:35,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:35,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-09-24 18:26:35,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-24 18:26:35,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-24 18:26:35,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:35,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:26:35,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-09-24 18:26:35,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 18:26:35,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:35,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:26:35,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:35,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:35,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:35,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:26:35,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:35,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:26:35,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:35,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:26:35,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:35,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:26:35,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:35,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:26:35,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:35,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:35,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:35,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 18:26:35,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:35,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-24 18:26:35,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:35,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:26:35,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:35,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 18:26:35,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:35,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 18:26:35,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:35,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:35,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:35,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 18:26:35,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:35,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-24 18:26:35,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:35,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:26:35,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:26:35,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-24 18:26:35,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:36,092 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:26:36,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691432518] [2020-09-24 18:26:36,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:26:36,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 18:26:36,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011351117] [2020-09-24 18:26:36,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:26:36,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:26:36,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:26:36,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:26:36,099 INFO L87 Difference]: Start difference. First operand 997 states and 1182 transitions. Second operand 8 states. [2020-09-24 18:26:41,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:26:41,055 INFO L93 Difference]: Finished difference Result 2930 states and 3513 transitions. [2020-09-24 18:26:41,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 18:26:41,056 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 235 [2020-09-24 18:26:41,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:26:41,067 INFO L225 Difference]: With dead ends: 2930 [2020-09-24 18:26:41,067 INFO L226 Difference]: Without dead ends: 1410 [2020-09-24 18:26:41,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-24 18:26:41,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1410 states. [2020-09-24 18:26:41,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1410 to 1153. [2020-09-24 18:26:41,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1153 states. [2020-09-24 18:26:41,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1250 transitions. [2020-09-24 18:26:41,112 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1250 transitions. Word has length 235 [2020-09-24 18:26:41,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:26:41,114 INFO L479 AbstractCegarLoop]: Abstraction has 1153 states and 1250 transitions. [2020-09-24 18:26:41,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:26:41,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1250 transitions. [2020-09-24 18:26:41,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-09-24 18:26:41,120 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:26:41,121 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:26:41,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:26:41,121 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:26:41,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:26:41,122 INFO L82 PathProgramCache]: Analyzing trace with hash 606199573, now seen corresponding path program 1 times [2020-09-24 18:26:41,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:26:41,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857617667] [2020-09-24 18:26:41,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:26:41,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:41,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:41,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:41,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:44,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:46,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:46,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-09-24 18:26:46,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:26:46,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-24 18:26:46,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:46,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:26:46,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:26:46,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-09-24 18:26:46,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:46,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:26:46,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:46,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:46,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:46,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:26:46,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:46,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:26:46,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:46,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:26:46,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:46,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:26:46,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:46,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:26:46,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:46,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:46,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:46,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-24 18:26:46,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:46,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-09-24 18:26:46,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:46,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:26:46,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:26:46,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-09-24 18:26:46,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:26:46,969 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:26:46,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857617667] [2020-09-24 18:26:46,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:26:46,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 18:26:46,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207455977] [2020-09-24 18:26:46,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:26:46,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:26:46,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:26:46,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:26:46,972 INFO L87 Difference]: Start difference. First operand 1153 states and 1250 transitions. Second operand 7 states. [2020-09-24 18:26:49,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:26:49,228 INFO L93 Difference]: Finished difference Result 2968 states and 3265 transitions. [2020-09-24 18:26:49,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:26:49,229 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 251 [2020-09-24 18:26:49,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:26:49,249 INFO L225 Difference]: With dead ends: 2968 [2020-09-24 18:26:49,250 INFO L226 Difference]: Without dead ends: 1830 [2020-09-24 18:26:49,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 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 18:26:49,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1830 states. [2020-09-24 18:26:49,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 1543. [2020-09-24 18:26:49,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1543 states. [2020-09-24 18:26:49,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 1695 transitions. [2020-09-24 18:26:49,312 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 1695 transitions. Word has length 251 [2020-09-24 18:26:49,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:26:49,313 INFO L479 AbstractCegarLoop]: Abstraction has 1543 states and 1695 transitions. [2020-09-24 18:26:49,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:26:49,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 1695 transitions. [2020-09-24 18:26:49,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-09-24 18:26:49,326 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:26:49,327 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:26:49,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:26:49,327 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:26:49,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:26:49,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1187173861, now seen corresponding path program 1 times [2020-09-24 18:26:49,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:26:49,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094075290] [2020-09-24 18:26:49,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:26:49,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:49,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:49,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:49,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:50,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:52,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:54,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:54,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 382 [2020-09-24 18:26:54,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:26:54,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-24 18:26:54,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:54,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:26:54,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-09-24 18:26:54,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-09-24 18:26:54,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:26:54,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:26:54,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:54,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:54,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:54,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:26:54,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:54,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:26:54,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:54,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:26:54,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:54,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:26:54,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:26:54,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:26:54,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:54,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:54,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:54,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 18:26:54,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:54,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-24 18:26:54,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:54,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:26:54,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:26:54,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-24 18:26:54,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:26:54,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 18:26:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:54,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:55,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:26:55,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-24 18:26:55,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:26:55,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-09-24 18:26:55,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:26:55,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:26:55,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:26:55,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-09-24 18:26:55,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:26:55,773 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:26:55,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094075290] [2020-09-24 18:26:55,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:26:55,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:26:55,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098119190] [2020-09-24 18:26:55,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:26:55,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:26:55,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:26:55,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:26:55,776 INFO L87 Difference]: Start difference. First operand 1543 states and 1695 transitions. Second operand 7 states. [2020-09-24 18:26:57,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:26:57,407 INFO L93 Difference]: Finished difference Result 3875 states and 4313 transitions. [2020-09-24 18:26:57,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:26:57,407 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 369 [2020-09-24 18:26:57,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:26:57,419 INFO L225 Difference]: With dead ends: 3875 [2020-09-24 18:26:57,419 INFO L226 Difference]: Without dead ends: 2347 [2020-09-24 18:26:57,424 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 18:26:57,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2347 states. [2020-09-24 18:26:57,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2347 to 2124. [2020-09-24 18:26:57,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2124 states. [2020-09-24 18:26:57,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2124 states to 2124 states and 2320 transitions. [2020-09-24 18:26:57,477 INFO L78 Accepts]: Start accepts. Automaton has 2124 states and 2320 transitions. Word has length 369 [2020-09-24 18:26:57,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:26:57,478 INFO L479 AbstractCegarLoop]: Abstraction has 2124 states and 2320 transitions. [2020-09-24 18:26:57,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:26:57,478 INFO L276 IsEmpty]: Start isEmpty. Operand 2124 states and 2320 transitions. [2020-09-24 18:26:57,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2020-09-24 18:26:57,486 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:26:57,486 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:26:57,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:26:57,487 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:26:57,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:26:57,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1905156978, now seen corresponding path program 1 times [2020-09-24 18:26:57,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:26:57,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516573279] [2020-09-24 18:26:57,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:26:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:26:57,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:57,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:57,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:26:57,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking...