/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:02:06,278 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:02:06,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:02:06,327 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:02:06,327 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:02:06,328 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:02:06,329 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:02:06,331 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:02:06,333 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:02:06,333 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:02:06,334 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:02:06,335 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:02:06,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:02:06,337 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:02:06,337 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:02:06,338 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:02:06,339 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:02:06,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:02:06,342 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:02:06,344 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:02:06,345 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:02:06,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:02:06,347 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:02:06,348 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:02:06,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:02:06,351 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:02:06,351 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:02:06,352 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:02:06,352 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:02:06,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:02:06,353 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:02:06,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:02:06,354 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:02:06,355 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:02:06,356 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:02:06,356 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:02:06,357 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:02:06,357 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:02:06,357 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:02:06,358 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:02:06,359 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:02:06,360 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 [2020-10-14 09:02:06,381 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:02:06,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:02:06,383 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:02:06,383 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:02:06,383 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:02:06,383 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:02:06,384 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:02:06,384 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:02:06,384 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:02:06,384 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:02:06,384 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:02:06,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:02:06,385 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:02:06,385 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:02:06,385 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:02:06,385 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:02:06,385 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:02:06,386 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:02:06,386 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:02:06,386 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:02:06,386 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:02:06,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:02:06,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:02:06,387 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:02:06,387 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:02:06,387 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:02:06,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:02:06,388 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:02:06,388 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:02:06,388 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 09:02:06,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:02:06,719 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:02:06,726 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:02:06,729 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:02:06,730 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:02:06,730 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2020-10-14 09:02:06,788 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdbc424c7/d023f1522edb461cb4130eebeda3c212/FLAG6c657d2ec [2020-10-14 09:02:07,523 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:02:07,524 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2020-10-14 09:02:07,550 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdbc424c7/d023f1522edb461cb4130eebeda3c212/FLAG6c657d2ec [2020-10-14 09:02:07,666 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdbc424c7/d023f1522edb461cb4130eebeda3c212 [2020-10-14 09:02:07,675 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:02:07,677 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:02:07,678 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:02:07,678 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:02:07,682 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:02:07,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:02:07" (1/1) ... [2020-10-14 09:02:07,687 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d135d0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:02:07, skipping insertion in model container [2020-10-14 09:02:07,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:02:07" (1/1) ... [2020-10-14 09:02:07,695 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:02:07,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:02:08,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:02:08,968 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:02:09,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:02:09,407 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:02:09,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:02:09 WrapperNode [2020-10-14 09:02:09,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:02:09,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:02:09,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:02:09,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:02:09,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:02:09" (1/1) ... [2020-10-14 09:02:09,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:02:09" (1/1) ... [2020-10-14 09:02:09,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:02:09" (1/1) ... [2020-10-14 09:02:09,500 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:02:09" (1/1) ... [2020-10-14 09:02:09,586 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:02:09" (1/1) ... [2020-10-14 09:02:09,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:02:09" (1/1) ... [2020-10-14 09:02:09,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:02:09" (1/1) ... [2020-10-14 09:02:09,676 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:02:09,677 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:02:09,677 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:02:09,677 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:02:09,678 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:02:09" (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 [2020-10-14 09:02:09,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:02:09,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:02:09,761 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:02:09,761 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:02:09,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:02:09,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:02:09,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:02:09,764 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:02:09,764 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:02:09,764 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:02:09,764 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:02:09,765 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:02:09,765 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:02:09,765 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:02:09,765 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:02:09,766 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:02:09,766 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:02:09,767 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:02:09,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:02:09,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:02:13,228 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:02:13,228 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:02:13,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:02:13 BoogieIcfgContainer [2020-10-14 09:02:13,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:02:13,249 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:02:13,250 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:02:13,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:02:13,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:02:07" (1/3) ... [2020-10-14 09:02:13,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ff6f351 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:02:13, skipping insertion in model container [2020-10-14 09:02:13,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:02:09" (2/3) ... [2020-10-14 09:02:13,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ff6f351 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:02:13, skipping insertion in model container [2020-10-14 09:02:13,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:02:13" (3/3) ... [2020-10-14 09:02:13,258 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2020-10-14 09:02:13,269 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:02:13,285 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-14 09:02:13,300 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-14 09:02:13,341 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:02:13,341 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:02:13,341 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:02:13,341 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:02:13,342 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:02:13,342 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:02:13,342 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:02:13,342 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:02:13,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states. [2020-10-14 09:02:13,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 09:02:13,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:02:13,433 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] [2020-10-14 09:02:13,434 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:02:13,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:02:13,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1856988322, now seen corresponding path program 1 times [2020-10-14 09:02:13,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:02:13,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585072413] [2020-10-14 09:02:13,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:02:13,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:14,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:14,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:15,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:15,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:15,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:16,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:18,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:18,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 09:02:18,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 09:02:18,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 09:02:18,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:18,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:18,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:02:18,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 09:02:18,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 09:02:18,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 09:02:20,559 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-14 09:02:20,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:02:20,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:20,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:20,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:20,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:02:20,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:02:20,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 09:02:20,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:20,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:20,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:02:20,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:02:20,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:02:20,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:02:20,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:02:20,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585072413] [2020-10-14 09:02:20,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:02:20,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:02:20,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624963794] [2020-10-14 09:02:20,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:02:20,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:02:20,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:02:20,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:02:20,770 INFO L87 Difference]: Start difference. First operand 1295 states. Second operand 6 states. [2020-10-14 09:02:22,009 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 500 [2020-10-14 09:02:35,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:02:35,875 INFO L93 Difference]: Finished difference Result 3525 states and 6007 transitions. [2020-10-14 09:02:35,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 09:02:35,877 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-14 09:02:35,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:02:35,911 INFO L225 Difference]: With dead ends: 3525 [2020-10-14 09:02:35,911 INFO L226 Difference]: Without dead ends: 2454 [2020-10-14 09:02:35,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:02:35,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2454 states. [2020-10-14 09:02:36,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2454 to 2289. [2020-10-14 09:02:36,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2289 states. [2020-10-14 09:02:36,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2289 states to 2289 states and 2984 transitions. [2020-10-14 09:02:36,137 INFO L78 Accepts]: Start accepts. Automaton has 2289 states and 2984 transitions. Word has length 56 [2020-10-14 09:02:36,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:02:36,139 INFO L479 AbstractCegarLoop]: Abstraction has 2289 states and 2984 transitions. [2020-10-14 09:02:36,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:02:36,139 INFO L276 IsEmpty]: Start isEmpty. Operand 2289 states and 2984 transitions. [2020-10-14 09:02:36,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 09:02:36,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:02:36,152 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] [2020-10-14 09:02:36,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:02:36,153 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:02:36,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:02:36,154 INFO L82 PathProgramCache]: Analyzing trace with hash -867241665, now seen corresponding path program 1 times [2020-10-14 09:02:36,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:02:36,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055090176] [2020-10-14 09:02:36,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:02:36,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:36,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:36,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:36,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:36,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:36,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:37,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:38,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:39,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:41,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:41,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 09:02:41,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:02:41,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 09:02:41,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:41,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:41,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:02:41,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 09:02:41,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 09:02:41,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:02:42,367 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-14 09:02:42,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:02:42,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:42,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:42,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:42,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:02:42,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:02:42,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 09:02:42,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:42,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:42,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:02:42,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:02:42,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:02:42,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:02:42,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:02:42,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055090176] [2020-10-14 09:02:42,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:02:42,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:02:42,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603006668] [2020-10-14 09:02:42,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:02:42,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:02:42,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:02:42,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:02:42,437 INFO L87 Difference]: Start difference. First operand 2289 states and 2984 transitions. Second operand 4 states. [2020-10-14 09:02:43,542 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 500 [2020-10-14 09:02:51,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:02:51,568 INFO L93 Difference]: Finished difference Result 3480 states and 4630 transitions. [2020-10-14 09:02:51,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:02:51,569 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-10-14 09:02:51,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:02:51,584 INFO L225 Difference]: With dead ends: 3480 [2020-10-14 09:02:51,584 INFO L226 Difference]: Without dead ends: 2519 [2020-10-14 09:02:51,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:02:51,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2519 states. [2020-10-14 09:02:51,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2519 to 2513. [2020-10-14 09:02:51,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2513 states. [2020-10-14 09:02:51,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2513 states to 2513 states and 3301 transitions. [2020-10-14 09:02:51,682 INFO L78 Accepts]: Start accepts. Automaton has 2513 states and 3301 transitions. Word has length 57 [2020-10-14 09:02:51,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:02:51,683 INFO L479 AbstractCegarLoop]: Abstraction has 2513 states and 3301 transitions. [2020-10-14 09:02:51,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:02:51,683 INFO L276 IsEmpty]: Start isEmpty. Operand 2513 states and 3301 transitions. [2020-10-14 09:02:51,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 09:02:51,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:02:51,688 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] [2020-10-14 09:02:51,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:02:51,689 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:02:51,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:02:51,690 INFO L82 PathProgramCache]: Analyzing trace with hash -108202759, now seen corresponding path program 1 times [2020-10-14 09:02:51,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:02:51,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960843180] [2020-10-14 09:02:51,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:02:51,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:51,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:51,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:51,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:52,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:53,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:54,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:54,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:55,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:56,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:56,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:56,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:56,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:56,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 09:02:56,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 09:02:56,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-14 09:02:56,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:56,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:56,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:02:56,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 09:02:56,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 09:02:56,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:02:58,006 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-14 09:02:58,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:02:58,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:02:58,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:02:58,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:02:58,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:02:58,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:02:58,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 09:02:58,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:02:58,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:02:58,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:02:58,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:02:58,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:02:58,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:02:58,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:02:58,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960843180] [2020-10-14 09:02:58,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:02:58,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:02:58,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182177173] [2020-10-14 09:02:58,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:02:58,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:02:58,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:02:58,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:02:58,079 INFO L87 Difference]: Start difference. First operand 2513 states and 3301 transitions. Second operand 6 states. [2020-10-14 09:02:59,345 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 500 [2020-10-14 09:03:08,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:03:08,085 INFO L93 Difference]: Finished difference Result 4971 states and 6951 transitions. [2020-10-14 09:03:08,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 09:03:08,090 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-10-14 09:03:08,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:03:08,110 INFO L225 Difference]: With dead ends: 4971 [2020-10-14 09:03:08,111 INFO L226 Difference]: Without dead ends: 4466 [2020-10-14 09:03:08,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:03:08,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4466 states. [2020-10-14 09:03:08,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4466 to 3484. [2020-10-14 09:03:08,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3484 states. [2020-10-14 09:03:08,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3484 states to 3484 states and 4662 transitions. [2020-10-14 09:03:08,306 INFO L78 Accepts]: Start accepts. Automaton has 3484 states and 4662 transitions. Word has length 57 [2020-10-14 09:03:08,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:03:08,308 INFO L479 AbstractCegarLoop]: Abstraction has 3484 states and 4662 transitions. [2020-10-14 09:03:08,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:03:08,309 INFO L276 IsEmpty]: Start isEmpty. Operand 3484 states and 4662 transitions. [2020-10-14 09:03:08,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 09:03:08,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:03:08,316 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] [2020-10-14 09:03:08,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:03:08,316 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:03:08,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:03:08,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1579807103, now seen corresponding path program 1 times [2020-10-14 09:03:08,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:03:08,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625965390] [2020-10-14 09:03:08,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:03:08,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:08,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:08,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:09,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:09,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:10,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:10,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:10,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:10,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:11,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:12,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:12,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:13,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:13,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:13,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 09:03:13,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 09:03:13,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 09:03:13,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:13,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:13,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:03:13,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:03:13,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 09:03:13,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:03:14,659 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-14 09:03:14,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:03:14,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:14,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:14,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:14,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:03:14,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:03:14,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 09:03:14,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:14,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:14,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:03:14,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:03:14,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:03:14,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:03:14,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:03:14,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625965390] [2020-10-14 09:03:14,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:03:14,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:03:14,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990845020] [2020-10-14 09:03:14,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:03:14,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:03:14,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:03:14,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:03:14,760 INFO L87 Difference]: Start difference. First operand 3484 states and 4662 transitions. Second operand 6 states. [2020-10-14 09:03:15,899 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 508 [2020-10-14 09:03:21,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:03:21,919 INFO L93 Difference]: Finished difference Result 7454 states and 10165 transitions. [2020-10-14 09:03:21,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:03:21,920 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-10-14 09:03:21,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:03:21,940 INFO L225 Difference]: With dead ends: 7454 [2020-10-14 09:03:21,941 INFO L226 Difference]: Without dead ends: 4904 [2020-10-14 09:03:21,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 09:03:21,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4904 states. [2020-10-14 09:03:22,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4904 to 4889. [2020-10-14 09:03:22,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4889 states. [2020-10-14 09:03:22,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4889 states to 4889 states and 6654 transitions. [2020-10-14 09:03:22,147 INFO L78 Accepts]: Start accepts. Automaton has 4889 states and 6654 transitions. Word has length 57 [2020-10-14 09:03:22,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:03:22,147 INFO L479 AbstractCegarLoop]: Abstraction has 4889 states and 6654 transitions. [2020-10-14 09:03:22,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:03:22,147 INFO L276 IsEmpty]: Start isEmpty. Operand 4889 states and 6654 transitions. [2020-10-14 09:03:22,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 09:03:22,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:03:22,154 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] [2020-10-14 09:03:22,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:03:22,155 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:03:22,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:03:22,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1304463258, now seen corresponding path program 1 times [2020-10-14 09:03:22,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:03:22,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388443512] [2020-10-14 09:03:22,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:03:22,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:22,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:22,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:22,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:22,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:22,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:23,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:23,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:24,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:24,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:24,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:25,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:26,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:26,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:27,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:27,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:27,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 09:03:27,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 09:03:27,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 09:03:27,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:27,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:27,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:03:27,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 09:03:27,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 09:03:27,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:03:28,369 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-14 09:03:28,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:03:28,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:28,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:28,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:28,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:03:28,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:03:28,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 09:03:28,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:28,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:28,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:03:28,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:03:28,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:03:28,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:03:28,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:03:28,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388443512] [2020-10-14 09:03:28,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:03:28,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:03:28,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395801089] [2020-10-14 09:03:28,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:03:28,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:03:28,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:03:28,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:03:28,420 INFO L87 Difference]: Start difference. First operand 4889 states and 6654 transitions. Second operand 4 states. [2020-10-14 09:03:29,523 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 500 [2020-10-14 09:03:33,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:03:33,910 INFO L93 Difference]: Finished difference Result 8141 states and 11471 transitions. [2020-10-14 09:03:33,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:03:33,911 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-10-14 09:03:33,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:03:33,930 INFO L225 Difference]: With dead ends: 8141 [2020-10-14 09:03:33,931 INFO L226 Difference]: Without dead ends: 4851 [2020-10-14 09:03:33,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:03:33,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4851 states. [2020-10-14 09:03:34,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4851 to 4842. [2020-10-14 09:03:34,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4842 states. [2020-10-14 09:03:34,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4842 states to 4842 states and 6813 transitions. [2020-10-14 09:03:34,124 INFO L78 Accepts]: Start accepts. Automaton has 4842 states and 6813 transitions. Word has length 59 [2020-10-14 09:03:34,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:03:34,124 INFO L479 AbstractCegarLoop]: Abstraction has 4842 states and 6813 transitions. [2020-10-14 09:03:34,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:03:34,125 INFO L276 IsEmpty]: Start isEmpty. Operand 4842 states and 6813 transitions. [2020-10-14 09:03:34,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 09:03:34,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:03:34,129 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] [2020-10-14 09:03:34,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:03:34,130 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:03:34,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:03:34,130 INFO L82 PathProgramCache]: Analyzing trace with hash -477493960, now seen corresponding path program 1 times [2020-10-14 09:03:34,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:03:34,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100393845] [2020-10-14 09:03:34,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:03:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:34,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:34,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:34,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:34,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:35,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:35,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:35,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:36,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:36,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:37,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:38,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:38,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:39,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:39,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 09:03:39,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 09:03:39,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 09:03:39,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:39,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:39,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 09:03:39,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:03:39,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 09:03:39,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:03:40,362 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-14 09:03:40,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:03:40,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:40,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:40,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:40,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:03:40,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:03:40,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 09:03:40,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:40,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:40,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:03:40,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:03:40,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:03:40,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:03:40,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:03:40,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100393845] [2020-10-14 09:03:40,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:03:40,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 09:03:40,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98160389] [2020-10-14 09:03:40,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 09:03:40,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:03:40,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 09:03:40,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:03:40,476 INFO L87 Difference]: Start difference. First operand 4842 states and 6813 transitions. Second operand 10 states. [2020-10-14 09:03:41,709 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 511 [2020-10-14 09:03:48,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:03:48,792 INFO L93 Difference]: Finished difference Result 17359 states and 25658 transitions. [2020-10-14 09:03:48,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 09:03:48,792 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-10-14 09:03:48,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:03:48,841 INFO L225 Difference]: With dead ends: 17359 [2020-10-14 09:03:48,842 INFO L226 Difference]: Without dead ends: 14030 [2020-10-14 09:03:48,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2020-10-14 09:03:48,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14030 states. [2020-10-14 09:03:49,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14030 to 5083. [2020-10-14 09:03:49,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5083 states. [2020-10-14 09:03:49,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5083 states to 5083 states and 7286 transitions. [2020-10-14 09:03:49,180 INFO L78 Accepts]: Start accepts. Automaton has 5083 states and 7286 transitions. Word has length 59 [2020-10-14 09:03:49,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:03:49,180 INFO L479 AbstractCegarLoop]: Abstraction has 5083 states and 7286 transitions. [2020-10-14 09:03:49,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 09:03:49,180 INFO L276 IsEmpty]: Start isEmpty. Operand 5083 states and 7286 transitions. [2020-10-14 09:03:49,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 09:03:49,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:03:49,183 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] [2020-10-14 09:03:49,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:03:49,184 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:03:49,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:03:49,184 INFO L82 PathProgramCache]: Analyzing trace with hash 519506083, now seen corresponding path program 1 times [2020-10-14 09:03:49,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:03:49,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490501283] [2020-10-14 09:03:49,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:03:49,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:49,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:49,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:49,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:49,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:50,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:51,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:52,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:52,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:52,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:52,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:54,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:54,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 09:03:54,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:03:54,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 09:03:54,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:54,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:54,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 09:03:54,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:03:54,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 09:03:54,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:03:55,413 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-14 09:03:55,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:03:55,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:55,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:55,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:55,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:03:55,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:03:55,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 09:03:55,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:55,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:55,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:03:55,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:03:55,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:03:55,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:03:55,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:03:55,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490501283] [2020-10-14 09:03:55,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:03:55,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 09:03:55,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621882028] [2020-10-14 09:03:55,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 09:03:55,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:03:55,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 09:03:55,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:03:55,514 INFO L87 Difference]: Start difference. First operand 5083 states and 7286 transitions. Second operand 10 states. [2020-10-14 09:03:56,758 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 511 [2020-10-14 09:04:02,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:04:02,844 INFO L93 Difference]: Finished difference Result 17225 states and 25601 transitions. [2020-10-14 09:04:02,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 09:04:02,844 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-10-14 09:04:02,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:04:02,880 INFO L225 Difference]: With dead ends: 17225 [2020-10-14 09:04:02,880 INFO L226 Difference]: Without dead ends: 15077 [2020-10-14 09:04:02,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2020-10-14 09:04:02,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15077 states. [2020-10-14 09:04:03,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15077 to 5490. [2020-10-14 09:04:03,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5490 states. [2020-10-14 09:04:03,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5490 states to 5490 states and 8006 transitions. [2020-10-14 09:04:03,333 INFO L78 Accepts]: Start accepts. Automaton has 5490 states and 8006 transitions. Word has length 59 [2020-10-14 09:04:03,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:04:03,335 INFO L479 AbstractCegarLoop]: Abstraction has 5490 states and 8006 transitions. [2020-10-14 09:04:03,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 09:04:03,335 INFO L276 IsEmpty]: Start isEmpty. Operand 5490 states and 8006 transitions. [2020-10-14 09:04:03,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 09:04:03,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:04:03,338 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] [2020-10-14 09:04:03,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:04:03,338 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:04:03,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:04:03,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1087890717, now seen corresponding path program 1 times [2020-10-14 09:04:03,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:04:03,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1459148956] [2020-10-14 09:04:03,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:04:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:03,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:03,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:03,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:04,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:04,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:04,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:05,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:05,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:05,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:05,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:07,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:07,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:07,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:08,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:08,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 09:04:08,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:04:08,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 09:04:08,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:08,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:08,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 09:04:08,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:04:08,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 09:04:08,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:04:09,596 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-14 09:04:09,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:04:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:09,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:09,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:09,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:04:09,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:04:09,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 09:04:09,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:09,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:09,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:04:09,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:04:09,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:04:09,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:04:09,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:04:09,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1459148956] [2020-10-14 09:04:09,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:04:09,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 09:04:09,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590187649] [2020-10-14 09:04:09,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 09:04:09,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:04:09,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 09:04:09,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:04:09,647 INFO L87 Difference]: Start difference. First operand 5490 states and 8006 transitions. Second operand 9 states. [2020-10-14 09:04:10,756 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 505 [2020-10-14 09:04:15,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:04:15,896 INFO L93 Difference]: Finished difference Result 17913 states and 26916 transitions. [2020-10-14 09:04:15,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 09:04:15,897 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2020-10-14 09:04:15,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:04:15,945 INFO L225 Difference]: With dead ends: 17913 [2020-10-14 09:04:15,945 INFO L226 Difference]: Without dead ends: 17909 [2020-10-14 09:04:15,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-14 09:04:15,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17909 states. [2020-10-14 09:04:16,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17909 to 5486. [2020-10-14 09:04:16,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5486 states. [2020-10-14 09:04:16,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5486 states to 5486 states and 8001 transitions. [2020-10-14 09:04:16,371 INFO L78 Accepts]: Start accepts. Automaton has 5486 states and 8001 transitions. Word has length 59 [2020-10-14 09:04:16,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:04:16,372 INFO L479 AbstractCegarLoop]: Abstraction has 5486 states and 8001 transitions. [2020-10-14 09:04:16,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 09:04:16,372 INFO L276 IsEmpty]: Start isEmpty. Operand 5486 states and 8001 transitions. [2020-10-14 09:04:16,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 09:04:16,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:04:16,374 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] [2020-10-14 09:04:16,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:04:16,375 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:04:16,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:04:16,375 INFO L82 PathProgramCache]: Analyzing trace with hash -226433332, now seen corresponding path program 1 times [2020-10-14 09:04:16,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:04:16,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139298519] [2020-10-14 09:04:16,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:04:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:16,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:16,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:16,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:16,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:17,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:20,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:20,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 09:04:20,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:04:20,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4343 [2020-10-14 09:04:20,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:20,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:20,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:04:20,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 09:04:20,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 09:04:20,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:04:21,947 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-14 09:04:21,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:04:21,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:21,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:21,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:21,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:04:21,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:04:21,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 09:04:21,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:21,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:21,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:04:21,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:04:21,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:04:21,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:04:22,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:04:22,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139298519] [2020-10-14 09:04:22,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:04:22,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:04:22,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555465668] [2020-10-14 09:04:22,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:04:22,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:04:22,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:04:22,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:04:22,010 INFO L87 Difference]: Start difference. First operand 5486 states and 8001 transitions. Second operand 4 states. [2020-10-14 09:04:25,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:04:25,742 INFO L93 Difference]: Finished difference Result 13532 states and 20214 transitions. [2020-10-14 09:04:25,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:04:25,743 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-10-14 09:04:25,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:04:25,759 INFO L225 Difference]: With dead ends: 13532 [2020-10-14 09:04:25,760 INFO L226 Difference]: Without dead ends: 9058 [2020-10-14 09:04:25,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:04:25,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9058 states. [2020-10-14 09:04:26,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9058 to 7691. [2020-10-14 09:04:26,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7691 states. [2020-10-14 09:04:26,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7691 states to 7691 states and 11255 transitions. [2020-10-14 09:04:26,357 INFO L78 Accepts]: Start accepts. Automaton has 7691 states and 11255 transitions. Word has length 60 [2020-10-14 09:04:26,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:04:26,357 INFO L479 AbstractCegarLoop]: Abstraction has 7691 states and 11255 transitions. [2020-10-14 09:04:26,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:04:26,358 INFO L276 IsEmpty]: Start isEmpty. Operand 7691 states and 11255 transitions. [2020-10-14 09:04:26,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 09:04:26,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:04:26,360 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] [2020-10-14 09:04:26,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:04:26,360 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:04:26,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:04:26,361 INFO L82 PathProgramCache]: Analyzing trace with hash 2037603292, now seen corresponding path program 1 times [2020-10-14 09:04:26,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:04:26,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060356283] [2020-10-14 09:04:26,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:04:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:26,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:26,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:26,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:26,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:27,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:29,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:29,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 09:04:29,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:04:29,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2939 [2020-10-14 09:04:29,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:29,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:29,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:04:29,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 09:04:29,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 09:04:29,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:04:30,443 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-14 09:04:30,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:04:30,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:30,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:30,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:30,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:04:30,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:04:30,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 09:04:30,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:30,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:30,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:04:30,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:04:30,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:04:30,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:04:30,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:04:30,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060356283] [2020-10-14 09:04:30,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:04:30,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:04:30,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198129051] [2020-10-14 09:04:30,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:04:30,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:04:30,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:04:30,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:04:30,494 INFO L87 Difference]: Start difference. First operand 7691 states and 11255 transitions. Second operand 4 states. [2020-10-14 09:04:34,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:04:34,540 INFO L93 Difference]: Finished difference Result 17407 states and 25848 transitions. [2020-10-14 09:04:34,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:04:34,541 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-10-14 09:04:34,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:04:34,558 INFO L225 Difference]: With dead ends: 17407 [2020-10-14 09:04:34,558 INFO L226 Difference]: Without dead ends: 10683 [2020-10-14 09:04:34,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:04:34,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10683 states. [2020-10-14 09:04:35,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10683 to 10681. [2020-10-14 09:04:35,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10681 states. [2020-10-14 09:04:35,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10681 states to 10681 states and 15514 transitions. [2020-10-14 09:04:35,232 INFO L78 Accepts]: Start accepts. Automaton has 10681 states and 15514 transitions. Word has length 60 [2020-10-14 09:04:35,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:04:35,233 INFO L479 AbstractCegarLoop]: Abstraction has 10681 states and 15514 transitions. [2020-10-14 09:04:35,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:04:35,233 INFO L276 IsEmpty]: Start isEmpty. Operand 10681 states and 15514 transitions. [2020-10-14 09:04:35,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 09:04:35,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:04:35,235 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] [2020-10-14 09:04:35,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:04:35,235 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:04:35,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:04:35,235 INFO L82 PathProgramCache]: Analyzing trace with hash -260728731, now seen corresponding path program 1 times [2020-10-14 09:04:35,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:04:35,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98724089] [2020-10-14 09:04:35,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:04:35,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:35,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:35,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:35,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:36,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:36,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:36,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:36,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:37,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:38,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:39,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:39,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:40,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:40,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:40,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:40,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 09:04:40,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:04:40,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-14 09:04:40,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:40,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:40,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 09:04:40,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:04:40,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 09:04:40,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:04:41,593 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-14 09:04:41,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:04:41,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:41,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:41,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:41,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:04:41,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:04:41,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 09:04:41,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:41,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:41,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:04:41,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:04:41,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:04:41,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:04:41,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:04:41,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98724089] [2020-10-14 09:04:41,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:04:41,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 09:04:41,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093707849] [2020-10-14 09:04:41,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 09:04:41,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:04:41,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 09:04:41,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:04:41,655 INFO L87 Difference]: Start difference. First operand 10681 states and 15514 transitions. Second operand 9 states. [2020-10-14 09:04:42,855 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 516 [2020-10-14 09:04:47,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:04:47,813 INFO L93 Difference]: Finished difference Result 18694 states and 27349 transitions. [2020-10-14 09:04:47,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:04:47,814 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-10-14 09:04:47,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:04:47,836 INFO L225 Difference]: With dead ends: 18694 [2020-10-14 09:04:47,836 INFO L226 Difference]: Without dead ends: 17685 [2020-10-14 09:04:47,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-10-14 09:04:47,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17685 states. [2020-10-14 09:04:48,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17685 to 10680. [2020-10-14 09:04:48,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10680 states. [2020-10-14 09:04:48,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10680 states to 10680 states and 15512 transitions. [2020-10-14 09:04:48,694 INFO L78 Accepts]: Start accepts. Automaton has 10680 states and 15512 transitions. Word has length 61 [2020-10-14 09:04:48,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:04:48,695 INFO L479 AbstractCegarLoop]: Abstraction has 10680 states and 15512 transitions. [2020-10-14 09:04:48,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 09:04:48,695 INFO L276 IsEmpty]: Start isEmpty. Operand 10680 states and 15512 transitions. [2020-10-14 09:04:48,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 09:04:48,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:04:48,697 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] [2020-10-14 09:04:48,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 09:04:48,697 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:04:48,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:04:48,698 INFO L82 PathProgramCache]: Analyzing trace with hash 502660439, now seen corresponding path program 1 times [2020-10-14 09:04:48,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:04:48,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34138467] [2020-10-14 09:04:48,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:04:48,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:48,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:48,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:48,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:49,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:49,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:49,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:50,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:50,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:52,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:52,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 09:04:52,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:04:52,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3880 [2020-10-14 09:04:52,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:52,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:52,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 09:04:52,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:04:52,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 09:04:52,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:04:53,876 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-14 09:04:53,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:04:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:53,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:53,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:53,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:04:53,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:04:53,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:04:53,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:53,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:53,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:04:53,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:04:53,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:04:53,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:04:53,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:04:53,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34138467] [2020-10-14 09:04:53,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:04:53,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 09:04:53,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504776392] [2020-10-14 09:04:53,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 09:04:53,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:04:53,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 09:04:53,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:04:53,927 INFO L87 Difference]: Start difference. First operand 10680 states and 15512 transitions. Second operand 9 states. [2020-10-14 09:04:55,120 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 512 [2020-10-14 09:05:01,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:05:01,382 INFO L93 Difference]: Finished difference Result 18691 states and 27345 transitions. [2020-10-14 09:05:01,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 09:05:01,383 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-10-14 09:05:01,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:05:01,404 INFO L225 Difference]: With dead ends: 18691 [2020-10-14 09:05:01,404 INFO L226 Difference]: Without dead ends: 18687 [2020-10-14 09:05:01,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-14 09:05:01,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18687 states. [2020-10-14 09:05:02,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18687 to 10676. [2020-10-14 09:05:02,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10676 states. [2020-10-14 09:05:02,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10676 states to 10676 states and 15507 transitions. [2020-10-14 09:05:02,304 INFO L78 Accepts]: Start accepts. Automaton has 10676 states and 15507 transitions. Word has length 62 [2020-10-14 09:05:02,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:05:02,304 INFO L479 AbstractCegarLoop]: Abstraction has 10676 states and 15507 transitions. [2020-10-14 09:05:02,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 09:05:02,305 INFO L276 IsEmpty]: Start isEmpty. Operand 10676 states and 15507 transitions. [2020-10-14 09:05:02,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 09:05:02,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:05:02,306 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] [2020-10-14 09:05:02,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 09:05:02,306 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:05:02,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:05:02,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1407962833, now seen corresponding path program 1 times [2020-10-14 09:05:02,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:05:02,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1461829577] [2020-10-14 09:05:02,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:05:02,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:02,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:02,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:02,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:02,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:03,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:03,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:04,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:04,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:07,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:07,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 09:05:07,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:05:07,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 09:05:07,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:07,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:07,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 09:05:07,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:05:07,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 09:05:07,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:08,532 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-14 09:05:08,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:08,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:08,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:08,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:08,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:08,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:08,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 09:05:08,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:08,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:08,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:05:08,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:08,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:05:08,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:08,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:05:08,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1461829577] [2020-10-14 09:05:08,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:08,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 09:05:08,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765685416] [2020-10-14 09:05:08,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 09:05:08,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:08,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 09:05:08,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:05:08,580 INFO L87 Difference]: Start difference. First operand 10676 states and 15507 transitions. Second operand 9 states. [2020-10-14 09:05:09,813 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 510 [2020-10-14 09:05:16,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:05:16,065 INFO L93 Difference]: Finished difference Result 13753 states and 19867 transitions. [2020-10-14 09:05:16,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 09:05:16,066 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-10-14 09:05:16,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:05:16,083 INFO L225 Difference]: With dead ends: 13753 [2020-10-14 09:05:16,084 INFO L226 Difference]: Without dead ends: 13741 [2020-10-14 09:05:16,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-14 09:05:16,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13741 states. [2020-10-14 09:05:17,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13741 to 10664. [2020-10-14 09:05:17,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10664 states. [2020-10-14 09:05:17,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10664 states to 10664 states and 15494 transitions. [2020-10-14 09:05:17,014 INFO L78 Accepts]: Start accepts. Automaton has 10664 states and 15494 transitions. Word has length 62 [2020-10-14 09:05:17,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:05:17,015 INFO L479 AbstractCegarLoop]: Abstraction has 10664 states and 15494 transitions. [2020-10-14 09:05:17,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 09:05:17,015 INFO L276 IsEmpty]: Start isEmpty. Operand 10664 states and 15494 transitions. [2020-10-14 09:05:17,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 09:05:17,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:05:17,019 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] [2020-10-14 09:05:17,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 09:05:17,019 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:05:17,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:05:17,020 INFO L82 PathProgramCache]: Analyzing trace with hash -296276202, now seen corresponding path program 1 times [2020-10-14 09:05:17,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:05:17,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084826145] [2020-10-14 09:05:17,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:05:17,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:17,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:17,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:17,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:17,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:17,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:17,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:17,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:17,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:20,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:20,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 09:05:20,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:05:20,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3138 [2020-10-14 09:05:20,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:20,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:20,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:05:20,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 09:05:20,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 09:05:20,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:21,366 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-14 09:05:21,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:21,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:21,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:21,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:21,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:21,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:21,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 09:05:21,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:21,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:21,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:05:21,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:21,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:05:21,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:21,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:05:21,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084826145] [2020-10-14 09:05:21,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:21,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:05:21,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930951537] [2020-10-14 09:05:21,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:05:21,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:21,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:05:21,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:05:21,414 INFO L87 Difference]: Start difference. First operand 10664 states and 15494 transitions. Second operand 4 states. [2020-10-14 09:05:22,676 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 502 [2020-10-14 09:05:27,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:05:27,369 INFO L93 Difference]: Finished difference Result 29224 states and 42792 transitions. [2020-10-14 09:05:27,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:05:27,373 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-10-14 09:05:27,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:05:27,398 INFO L225 Difference]: With dead ends: 29224 [2020-10-14 09:05:27,398 INFO L226 Difference]: Without dead ends: 19762 [2020-10-14 09:05:27,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:05:27,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19762 states. [2020-10-14 09:05:28,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19762 to 19760. [2020-10-14 09:05:28,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19760 states. [2020-10-14 09:05:29,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19760 states to 19760 states and 28560 transitions. [2020-10-14 09:05:29,011 INFO L78 Accepts]: Start accepts. Automaton has 19760 states and 28560 transitions. Word has length 70 [2020-10-14 09:05:29,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:05:29,012 INFO L479 AbstractCegarLoop]: Abstraction has 19760 states and 28560 transitions. [2020-10-14 09:05:29,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:05:29,012 INFO L276 IsEmpty]: Start isEmpty. Operand 19760 states and 28560 transitions. [2020-10-14 09:05:29,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 09:05:29,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:05:29,015 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] [2020-10-14 09:05:29,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 09:05:29,015 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:05:29,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:05:29,015 INFO L82 PathProgramCache]: Analyzing trace with hash -915509265, now seen corresponding path program 1 times [2020-10-14 09:05:29,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:05:29,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419267977] [2020-10-14 09:05:29,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:05:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:29,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:29,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:29,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:29,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:29,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:29,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:31,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:31,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 09:05:31,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 09:05:31,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2476 [2020-10-14 09:05:31,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:31,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:31,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:05:31,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-14 09:05:31,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 09:05:31,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:32,692 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-14 09:05:32,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:32,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:32,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:32,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:32,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:32,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:32,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 09:05:32,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:32,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:32,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:05:32,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:32,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:05:32,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:32,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:05:32,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419267977] [2020-10-14 09:05:32,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:32,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:05:32,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12365430] [2020-10-14 09:05:32,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:05:32,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:32,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:05:32,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:05:32,753 INFO L87 Difference]: Start difference. First operand 19760 states and 28560 transitions. Second operand 4 states. [2020-10-14 09:05:33,938 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 507 [2020-10-14 09:05:40,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:05:40,570 INFO L93 Difference]: Finished difference Result 55364 states and 80362 transitions. [2020-10-14 09:05:40,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:05:40,571 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-10-14 09:05:40,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:05:40,620 INFO L225 Difference]: With dead ends: 55364 [2020-10-14 09:05:40,620 INFO L226 Difference]: Without dead ends: 36842 [2020-10-14 09:05:40,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:05:40,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36842 states. [2020-10-14 09:05:43,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36842 to 34680. [2020-10-14 09:05:43,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34680 states. [2020-10-14 09:05:43,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34680 states to 34680 states and 50020 transitions. [2020-10-14 09:05:43,672 INFO L78 Accepts]: Start accepts. Automaton has 34680 states and 50020 transitions. Word has length 71 [2020-10-14 09:05:43,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:05:43,672 INFO L479 AbstractCegarLoop]: Abstraction has 34680 states and 50020 transitions. [2020-10-14 09:05:43,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:05:43,672 INFO L276 IsEmpty]: Start isEmpty. Operand 34680 states and 50020 transitions. [2020-10-14 09:05:43,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 09:05:43,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:05:43,675 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] [2020-10-14 09:05:43,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 09:05:43,676 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:05:43,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:05:43,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1667623616, now seen corresponding path program 1 times [2020-10-14 09:05:43,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:05:43,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491598136] [2020-10-14 09:05:43,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:05:43,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:43,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:43,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:43,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:43,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:44,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:44,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:44,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:44,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:44,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:47,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:47,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 09:05:47,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:05:47,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3305 [2020-10-14 09:05:47,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:47,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:47,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:05:47,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 09:05:47,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 09:05:47,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:48,193 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-14 09:05:48,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:48,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:48,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:48,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:48,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:48,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 09:05:48,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:48,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:48,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:05:48,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:48,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:05:48,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:48,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:05:48,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491598136] [2020-10-14 09:05:48,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:48,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:05:48,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400356919] [2020-10-14 09:05:48,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:05:48,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:48,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:05:48,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:05:48,255 INFO L87 Difference]: Start difference. First operand 34680 states and 50020 transitions. Second operand 6 states.