/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 SequenceOfStatements --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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:28:04,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:28:04,294 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:28:04,336 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:28:04,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:28:04,346 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:28:04,349 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:28:04,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:28:04,354 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:28:04,358 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:28:04,359 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:28:04,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:28:04,360 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:28:04,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:28:04,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:28:04,367 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:28:04,369 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:28:04,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:28:04,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:28:04,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:28:04,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:28:04,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:28:04,383 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:28:04,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:28:04,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:28:04,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:28:04,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:28:04,387 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:28:04,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:28:04,388 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:28:04,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:28:04,389 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:28:04,390 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:28:04,391 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:28:04,391 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:28:04,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:28:04,392 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:28:04,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:28:04,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:28:04,393 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:28:04,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:28:04,395 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 [2020-10-13 14:28:04,418 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:28:04,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:28:04,421 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:28:04,422 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:28:04,422 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:28:04,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:28:04,423 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:28:04,423 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:28:04,423 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:28:04,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:28:04,424 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:28:04,424 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:28:04,425 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:28:04,425 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:28:04,425 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:28:04,425 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:28:04,426 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:28:04,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:28:04,426 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:28:04,426 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:28:04,426 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:28:04,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:28:04,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:28:04,427 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:28:04,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:28:04,428 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:28:04,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:28:04,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:28:04,428 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:28:04,428 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 -> SequenceOfStatements 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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 14:28:04,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:28:04,739 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:28:04,742 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:28:04,744 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:28:04,744 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:28:04,745 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 14:28:04,820 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55b529bc5/7b19caa2a7924737a9f3c289024b8a51/FLAGddb093d20 [2020-10-13 14:28:05,608 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:28:05,609 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 14:28:05,645 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55b529bc5/7b19caa2a7924737a9f3c289024b8a51/FLAGddb093d20 [2020-10-13 14:28:06,134 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55b529bc5/7b19caa2a7924737a9f3c289024b8a51 [2020-10-13 14:28:06,146 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:28:06,148 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:28:06,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:28:06,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:28:06,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:28:06,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:28:06" (1/1) ... [2020-10-13 14:28:06,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b3ca2de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:28:06, skipping insertion in model container [2020-10-13 14:28:06,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:28:06" (1/1) ... [2020-10-13 14:28:06,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:28:06,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:28:08,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:28:08,652 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:28:09,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:28:09,837 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:28:09,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:28:09 WrapperNode [2020-10-13 14:28:09,839 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:28:09,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:28:09,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:28:09,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:28:09,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:28:09" (1/1) ... [2020-10-13 14:28:09,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:28:09" (1/1) ... [2020-10-13 14:28:09,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:28:09" (1/1) ... [2020-10-13 14:28:09,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:28:09" (1/1) ... [2020-10-13 14:28:10,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:28:09" (1/1) ... [2020-10-13 14:28:10,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:28:09" (1/1) ... [2020-10-13 14:28:10,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:28:09" (1/1) ... [2020-10-13 14:28:10,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:28:10,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:28:10,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:28:10,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:28:10,206 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:28:09" (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 [2020-10-13 14:28:10,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:28:10,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:28:10,269 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:28:10,269 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:28:10,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:28:10,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:28:10,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:28:10,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 14:28:10,270 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:28:10,270 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:28:10,270 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:28:10,270 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:28:10,270 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:28:10,271 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:28:10,271 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:28:10,271 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:28:10,271 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 14:28:10,271 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-13 14:28:10,272 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-13 14:28:10,272 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-13 14:28:10,272 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:28:10,272 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:28:10,272 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:28:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:28:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:28:15,674 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:28:15,674 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:28:15,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:28:15 BoogieIcfgContainer [2020-10-13 14:28:15,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:28:15,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:28:15,697 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:28:15,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:28:15,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:28:06" (1/3) ... [2020-10-13 14:28:15,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b1d6a83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:28:15, skipping insertion in model container [2020-10-13 14:28:15,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:28:09" (2/3) ... [2020-10-13 14:28:15,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b1d6a83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:28:15, skipping insertion in model container [2020-10-13 14:28:15,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:28:15" (3/3) ... [2020-10-13 14:28:15,704 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 14:28:15,714 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:28:15,724 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 29 error locations. [2020-10-13 14:28:15,738 INFO L251 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2020-10-13 14:28:15,772 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:28:15,772 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:28:15,772 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:28:15,772 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:28:15,773 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:28:15,773 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:28:15,773 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:28:15,773 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:28:15,826 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states. [2020-10-13 14:28:15,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 14:28:15,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:28:15,858 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] [2020-10-13 14:28:15,858 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:28:15,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:28:15,865 INFO L82 PathProgramCache]: Analyzing trace with hash 228731339, now seen corresponding path program 1 times [2020-10-13 14:28:15,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:28:15,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024803766] [2020-10-13 14:28:15,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:28:16,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:28:16,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:16,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:17,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:17,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:17,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:17,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:19,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:19,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:20,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:20,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:20,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:21,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:21,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:28:21,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 14:28:21,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:28:21,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-13 14:28:21,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:28:21,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:28:21,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 14:28:21,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 14:28:21,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-13 14:28:24,217 WARN L193 SmtUtils]: Spent 2.48 s on a formula simplification that was a NOOP. DAG size: 745 [2020-10-13 14:28:24,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:28:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:28:24,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:28:24,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:28:24,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:28:24,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:28:24,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 14:28:24,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:28:24,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:28:24,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:28:24,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:28:24,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:28:24,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:28:24,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024803766] [2020-10-13 14:28:24,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:28:24,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:28:24,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560288971] [2020-10-13 14:28:24,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:28:24,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:28:24,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:28:24,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:28:24,424 INFO L87 Difference]: Start difference. First operand 2069 states. Second operand 7 states. [2020-10-13 14:28:26,796 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification that was a NOOP. DAG size: 749 [2020-10-13 14:28:59,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:28:59,703 INFO L93 Difference]: Finished difference Result 5937 states and 10162 transitions. [2020-10-13 14:28:59,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:28:59,706 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2020-10-13 14:28:59,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:28:59,785 INFO L225 Difference]: With dead ends: 5937 [2020-10-13 14:28:59,785 INFO L226 Difference]: Without dead ends: 4690 [2020-10-13 14:28:59,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:28:59,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4690 states. [2020-10-13 14:29:00,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4690 to 3310. [2020-10-13 14:29:00,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3310 states. [2020-10-13 14:29:00,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3310 states to 3310 states and 4554 transitions. [2020-10-13 14:29:00,137 INFO L78 Accepts]: Start accepts. Automaton has 3310 states and 4554 transitions. Word has length 104 [2020-10-13 14:29:00,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:29:00,138 INFO L479 AbstractCegarLoop]: Abstraction has 3310 states and 4554 transitions. [2020-10-13 14:29:00,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:29:00,139 INFO L276 IsEmpty]: Start isEmpty. Operand 3310 states and 4554 transitions. [2020-10-13 14:29:00,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 14:29:00,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:29:00,159 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] [2020-10-13 14:29:00,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:29:00,160 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:29:00,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:29:00,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1151979797, now seen corresponding path program 1 times [2020-10-13 14:29:00,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:29:00,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902635214] [2020-10-13 14:29:00,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:29:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:29:00,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:00,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:00,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:00,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:01,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:01,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:01,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:02,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:02,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:03,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:03,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:05,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:29:05,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 14:29:05,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:29:05,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-13 14:29:05,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:29:05,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:29:05,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 14:29:05,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 14:29:05,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:29:08,710 WARN L193 SmtUtils]: Spent 3.09 s on a formula simplification that was a NOOP. DAG size: 745 [2020-10-13 14:29:08,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:29:08,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:29:08,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:08,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:29:08,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:29:08,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:29:08,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 14:29:08,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:29:08,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:29:08,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:29:08,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:29:08,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:29:08,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:29:08,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902635214] [2020-10-13 14:29:08,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:29:08,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:29:08,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910944549] [2020-10-13 14:29:08,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:29:08,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:29:08,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:29:08,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:29:08,847 INFO L87 Difference]: Start difference. First operand 3310 states and 4554 transitions. Second operand 7 states. [2020-10-13 14:29:11,203 WARN L193 SmtUtils]: Spent 2.22 s on a formula simplification that was a NOOP. DAG size: 749 [2020-10-13 14:29:37,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:29:37,929 INFO L93 Difference]: Finished difference Result 11855 states and 16786 transitions. [2020-10-13 14:29:37,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:29:37,930 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 105 [2020-10-13 14:29:37,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:29:37,976 INFO L225 Difference]: With dead ends: 11855 [2020-10-13 14:29:37,977 INFO L226 Difference]: Without dead ends: 9271 [2020-10-13 14:29:37,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:29:37,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9271 states. [2020-10-13 14:29:38,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9271 to 6687. [2020-10-13 14:29:38,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6687 states. [2020-10-13 14:29:38,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6687 states to 6687 states and 9513 transitions. [2020-10-13 14:29:38,295 INFO L78 Accepts]: Start accepts. Automaton has 6687 states and 9513 transitions. Word has length 105 [2020-10-13 14:29:38,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:29:38,300 INFO L479 AbstractCegarLoop]: Abstraction has 6687 states and 9513 transitions. [2020-10-13 14:29:38,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:29:38,300 INFO L276 IsEmpty]: Start isEmpty. Operand 6687 states and 9513 transitions. [2020-10-13 14:29:38,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-13 14:29:38,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:29:38,327 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] [2020-10-13 14:29:38,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:29:38,328 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:29:38,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:29:38,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1968249527, now seen corresponding path program 1 times [2020-10-13 14:29:38,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:29:38,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715726943] [2020-10-13 14:29:38,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:29:38,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:29:38,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:38,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:38,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:38,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:38,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:39,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:39,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:40,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:43,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:29:43,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 14:29:43,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:29:43,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 14:29:43,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:29:43,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:29:43,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:29:43,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 14:29:43,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:29:46,319 WARN L193 SmtUtils]: Spent 2.68 s on a formula simplification that was a NOOP. DAG size: 745 [2020-10-13 14:29:46,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:29:46,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:29:46,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:29:46,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:29:46,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:29:46,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:29:46,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 14:29:46,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:29:46,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:29:46,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:29:46,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:29:46,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:29:46,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:29:46,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715726943] [2020-10-13 14:29:46,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:29:46,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:29:46,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615692546] [2020-10-13 14:29:46,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:29:46,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:29:46,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:29:46,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:29:46,454 INFO L87 Difference]: Start difference. First operand 6687 states and 9513 transitions. Second operand 7 states. [2020-10-13 14:29:49,132 WARN L193 SmtUtils]: Spent 2.52 s on a formula simplification that was a NOOP. DAG size: 749 [2020-10-13 14:30:12,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:30:12,111 INFO L93 Difference]: Finished difference Result 31303 states and 45723 transitions. [2020-10-13 14:30:12,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:30:12,111 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 106 [2020-10-13 14:30:12,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:30:12,208 INFO L225 Difference]: With dead ends: 31303 [2020-10-13 14:30:12,208 INFO L226 Difference]: Without dead ends: 25180 [2020-10-13 14:30:12,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:30:12,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25180 states. [2020-10-13 14:30:14,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25180 to 16967. [2020-10-13 14:30:14,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16967 states. [2020-10-13 14:30:14,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16967 states to 16967 states and 24716 transitions. [2020-10-13 14:30:14,082 INFO L78 Accepts]: Start accepts. Automaton has 16967 states and 24716 transitions. Word has length 106 [2020-10-13 14:30:14,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:30:14,083 INFO L479 AbstractCegarLoop]: Abstraction has 16967 states and 24716 transitions. [2020-10-13 14:30:14,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:30:14,083 INFO L276 IsEmpty]: Start isEmpty. Operand 16967 states and 24716 transitions. [2020-10-13 14:30:14,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-13 14:30:14,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:30:14,118 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] [2020-10-13 14:30:14,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:30:14,119 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:30:14,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:30:14,119 INFO L82 PathProgramCache]: Analyzing trace with hash -2068088221, now seen corresponding path program 1 times [2020-10-13 14:30:14,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:30:14,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710309307] [2020-10-13 14:30:14,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:30:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:14,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:14,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:14,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:14,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:14,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:16,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:16,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:17,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:17,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:18,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:19,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:19,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 14:30:19,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:30:19,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-13 14:30:19,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:19,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:30:19,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 14:30:19,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 14:30:19,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:30:21,672 WARN L193 SmtUtils]: Spent 2.27 s on a formula simplification that was a NOOP. DAG size: 745 [2020-10-13 14:30:21,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:30:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:21,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:21,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:21,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:30:21,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:30:21,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 14:30:21,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:21,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:30:21,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:30:21,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:30:21,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:30:21,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:30:21,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710309307] [2020-10-13 14:30:21,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:30:21,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:30:21,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113425306] [2020-10-13 14:30:21,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:30:21,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:30:21,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:30:21,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:30:21,781 INFO L87 Difference]: Start difference. First operand 16967 states and 24716 transitions. Second operand 7 states. [2020-10-13 14:30:24,124 WARN L193 SmtUtils]: Spent 2.22 s on a formula simplification that was a NOOP. DAG size: 749 [2020-10-13 14:30:39,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:30:39,140 INFO L93 Difference]: Finished difference Result 38938 states and 56928 transitions. [2020-10-13 14:30:39,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:30:39,141 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 107 [2020-10-13 14:30:39,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:30:39,218 INFO L225 Difference]: With dead ends: 38938 [2020-10-13 14:30:39,218 INFO L226 Difference]: Without dead ends: 33042 [2020-10-13 14:30:39,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:30:39,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33042 states. [2020-10-13 14:30:39,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33042 to 21425. [2020-10-13 14:30:39,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21425 states. [2020-10-13 14:30:40,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21425 states to 21425 states and 31376 transitions. [2020-10-13 14:30:40,025 INFO L78 Accepts]: Start accepts. Automaton has 21425 states and 31376 transitions. Word has length 107 [2020-10-13 14:30:40,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:30:40,025 INFO L479 AbstractCegarLoop]: Abstraction has 21425 states and 31376 transitions. [2020-10-13 14:30:40,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:30:40,026 INFO L276 IsEmpty]: Start isEmpty. Operand 21425 states and 31376 transitions. [2020-10-13 14:30:40,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-13 14:30:40,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:30:40,059 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] [2020-10-13 14:30:40,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:30:40,060 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:30:40,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:30:40,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1184378761, now seen corresponding path program 1 times [2020-10-13 14:30:40,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:30:40,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298831979] [2020-10-13 14:30:40,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:30:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:40,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:40,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:40,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:40,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:40,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:42,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:42,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:43,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:43,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:45,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:45,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 14:30:45,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:30:45,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 14:30:45,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:45,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 14:30:45,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-13 14:30:45,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 14:30:45,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:30:47,855 WARN L193 SmtUtils]: Spent 2.28 s on a formula simplification that was a NOOP. DAG size: 745 [2020-10-13 14:30:47,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:30:47,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:30:47,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:30:47,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:30:47,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:30:47,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:30:47,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 14:30:47,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:30:47,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:30:47,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:30:47,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:30:47,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:30:47,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:30:47,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298831979] [2020-10-13 14:30:47,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:30:47,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 14:30:47,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671822414] [2020-10-13 14:30:47,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 14:30:47,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:30:47,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 14:30:47,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:30:47,977 INFO L87 Difference]: Start difference. First operand 21425 states and 31376 transitions. Second operand 9 states. [2020-10-13 14:30:50,770 WARN L193 SmtUtils]: Spent 2.56 s on a formula simplification that was a NOOP. DAG size: 778 [2020-10-13 14:31:08,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:31:08,621 INFO L93 Difference]: Finished difference Result 54437 states and 81238 transitions. [2020-10-13 14:31:08,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 14:31:08,621 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 107 [2020-10-13 14:31:08,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:31:08,725 INFO L225 Difference]: With dead ends: 54437 [2020-10-13 14:31:08,725 INFO L226 Difference]: Without dead ends: 42504 [2020-10-13 14:31:08,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2020-10-13 14:31:08,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42504 states. [2020-10-13 14:31:09,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42504 to 23355. [2020-10-13 14:31:09,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23355 states. [2020-10-13 14:31:09,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23355 states to 23355 states and 34306 transitions. [2020-10-13 14:31:09,752 INFO L78 Accepts]: Start accepts. Automaton has 23355 states and 34306 transitions. Word has length 107 [2020-10-13 14:31:09,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:31:09,752 INFO L479 AbstractCegarLoop]: Abstraction has 23355 states and 34306 transitions. [2020-10-13 14:31:09,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 14:31:09,753 INFO L276 IsEmpty]: Start isEmpty. Operand 23355 states and 34306 transitions. [2020-10-13 14:31:09,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-13 14:31:09,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:31:09,776 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] [2020-10-13 14:31:09,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:31:09,777 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:31:09,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:31:09,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1024438552, now seen corresponding path program 1 times [2020-10-13 14:31:09,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:31:09,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708783452] [2020-10-13 14:31:09,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:31:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:31:09,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:10,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:10,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:10,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:11,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:13,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:13,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:14,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:31:14,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 14:31:14,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 14:31:14,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-13 14:31:14,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:31:14,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:31:14,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 14:31:14,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 14:31:14,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:31:17,728 WARN L193 SmtUtils]: Spent 2.67 s on a formula simplification that was a NOOP. DAG size: 745 [2020-10-13 14:31:17,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:31:17,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:31:17,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:17,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:31:17,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:31:17,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:31:17,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 14:31:17,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:31:17,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:31:17,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:31:17,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:31:17,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:31:17,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:31:17,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708783452] [2020-10-13 14:31:17,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:31:17,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:31:17,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723855743] [2020-10-13 14:31:17,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:31:17,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:31:17,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:31:17,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:31:17,837 INFO L87 Difference]: Start difference. First operand 23355 states and 34306 transitions. Second operand 7 states. [2020-10-13 14:31:20,196 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification that was a NOOP. DAG size: 749 [2020-10-13 14:31:36,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:31:36,302 INFO L93 Difference]: Finished difference Result 42184 states and 62218 transitions. [2020-10-13 14:31:36,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:31:36,303 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 107 [2020-10-13 14:31:36,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:31:36,381 INFO L225 Difference]: With dead ends: 42184 [2020-10-13 14:31:36,382 INFO L226 Difference]: Without dead ends: 32338 [2020-10-13 14:31:36,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:31:36,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32338 states.