/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 15:10:37,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 15:10:37,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 15:10:37,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 15:10:37,152 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 15:10:37,153 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 15:10:37,154 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 15:10:37,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 15:10:37,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 15:10:37,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 15:10:37,160 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 15:10:37,161 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 15:10:37,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 15:10:37,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 15:10:37,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 15:10:37,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 15:10:37,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 15:10:37,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 15:10:37,173 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 15:10:37,175 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 15:10:37,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 15:10:37,179 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 15:10:37,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 15:10:37,184 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 15:10:37,191 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 15:10:37,191 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 15:10:37,191 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 15:10:37,195 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 15:10:37,195 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 15:10:37,197 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 15:10:37,197 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 15:10:37,198 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 15:10:37,199 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 15:10:37,200 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 15:10:37,201 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 15:10:37,201 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 15:10:37,202 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 15:10:37,202 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 15:10:37,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 15:10:37,203 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 15:10:37,205 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 15:10:37,205 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 15:10:37,263 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 15:10:37,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 15:10:37,264 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 15:10:37,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 15:10:37,265 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 15:10:37,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 15:10:37,266 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 15:10:37,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 15:10:37,267 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 15:10:37,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 15:10:37,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 15:10:37,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 15:10:37,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 15:10:37,268 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 15:10:37,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 15:10:37,268 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 15:10:37,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 15:10:37,270 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 15:10:37,270 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 15:10:37,270 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 15:10:37,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 15:10:37,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:10:37,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 15:10:37,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 15:10:37,271 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 15:10:37,271 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 15:10:37,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 15:10:37,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 15:10:37,272 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 15:10:37,272 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 15:10:37,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 15:10:37,602 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 15:10:37,605 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 15:10:37,607 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 15:10:37,607 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 15:10:37,608 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-13 15:10:37,669 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4473a5c72/b7667b8d29b54f9aa5b4160ad1edccae/FLAG7100c9bac [2020-10-13 15:10:38,307 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 15:10:38,308 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-13 15:10:38,331 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4473a5c72/b7667b8d29b54f9aa5b4160ad1edccae/FLAG7100c9bac [2020-10-13 15:10:38,581 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4473a5c72/b7667b8d29b54f9aa5b4160ad1edccae [2020-10-13 15:10:38,590 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 15:10:38,592 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 15:10:38,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 15:10:38,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 15:10:38,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 15:10:38,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:10:38" (1/1) ... [2020-10-13 15:10:38,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f066e53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:10:38, skipping insertion in model container [2020-10-13 15:10:38,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:10:38" (1/1) ... [2020-10-13 15:10:38,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 15:10:38,706 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 15:10:39,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:10:39,506 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 15:10:39,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:10:39,801 INFO L208 MainTranslator]: Completed translation [2020-10-13 15:10:39,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:10:39 WrapperNode [2020-10-13 15:10:39,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 15:10:39,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 15:10:39,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 15:10:39,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 15:10:39,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:10:39" (1/1) ... [2020-10-13 15:10:39,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:10:39" (1/1) ... [2020-10-13 15:10:39,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:10:39" (1/1) ... [2020-10-13 15:10:39,848 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:10:39" (1/1) ... [2020-10-13 15:10:39,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:10:39" (1/1) ... [2020-10-13 15:10:39,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:10:39" (1/1) ... [2020-10-13 15:10:39,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:10:39" (1/1) ... [2020-10-13 15:10:39,983 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 15:10:39,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 15:10:39,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 15:10:39,984 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 15:10:39,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:10:39" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:10:40,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 15:10:40,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 15:10:40,067 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 15:10:40,067 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 15:10:40,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 15:10:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 15:10:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 15:10:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 15:10:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 15:10:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 15:10:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 15:10:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 15:10:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 15:10:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 15:10:40,070 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 15:10:40,070 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 15:10:40,070 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 15:10:40,070 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-13 15:10:40,070 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 15:10:40,071 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 15:10:40,071 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 15:10:40,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 15:10:40,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 15:10:42,494 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 15:10:42,494 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 15:10:42,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:10:42 BoogieIcfgContainer [2020-10-13 15:10:42,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 15:10:42,507 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 15:10:42,507 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 15:10:42,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 15:10:42,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 03:10:38" (1/3) ... [2020-10-13 15:10:42,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257ac302 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:10:42, skipping insertion in model container [2020-10-13 15:10:42,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:10:39" (2/3) ... [2020-10-13 15:10:42,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257ac302 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:10:42, skipping insertion in model container [2020-10-13 15:10:42,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:10:42" (3/3) ... [2020-10-13 15:10:42,515 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-13 15:10:42,527 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 15:10:42,539 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 15:10:42,553 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 15:10:42,582 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 15:10:42,582 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 15:10:42,583 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 15:10:42,583 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 15:10:42,583 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 15:10:42,583 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 15:10:42,583 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 15:10:42,583 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 15:10:42,617 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states. [2020-10-13 15:10:42,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-13 15:10:42,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:10:42,649 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:10:42,649 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:10:42,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:10:42,657 INFO L82 PathProgramCache]: Analyzing trace with hash 202782792, now seen corresponding path program 1 times [2020-10-13 15:10:42,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:10:42,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130770971] [2020-10-13 15:10:42,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:10:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:10:43,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:44,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:45,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:45,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:46,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:46,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:48,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:10:48,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-13 15:10:48,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:10:48,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-13 15:10:48,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:10:48,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:10:48,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-13 15:10:48,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 15:10:48,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-13 15:10:49,915 WARN L193 SmtUtils]: Spent 884.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-13 15:10:49,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:10:49,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:10:49,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:49,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:10:49,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:10:49,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:10:49,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 15:10:49,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:10:49,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:10:49,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:10:49,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:10:49,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:10:50,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:10:50,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130770971] [2020-10-13 15:10:50,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:10:50,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 15:10:50,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840718230] [2020-10-13 15:10:50,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 15:10:50,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:10:50,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 15:10:50,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:10:50,111 INFO L87 Difference]: Start difference. First operand 785 states. Second operand 8 states. [2020-10-13 15:10:51,004 WARN L193 SmtUtils]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 389 [2020-10-13 15:10:57,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:10:57,777 INFO L93 Difference]: Finished difference Result 3099 states and 5338 transitions. [2020-10-13 15:10:57,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 15:10:57,779 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 217 [2020-10-13 15:10:57,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:10:57,830 INFO L225 Difference]: With dead ends: 3099 [2020-10-13 15:10:57,830 INFO L226 Difference]: Without dead ends: 2842 [2020-10-13 15:10:57,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-13 15:10:57,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2020-10-13 15:10:58,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1008. [2020-10-13 15:10:58,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1008 states. [2020-10-13 15:10:58,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1745 transitions. [2020-10-13 15:10:58,052 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1745 transitions. Word has length 217 [2020-10-13 15:10:58,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:10:58,058 INFO L479 AbstractCegarLoop]: Abstraction has 1008 states and 1745 transitions. [2020-10-13 15:10:58,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 15:10:58,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1745 transitions. [2020-10-13 15:10:58,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-13 15:10:58,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:10:58,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:10:58,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 15:10:58,074 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:10:58,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:10:58,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1920573290, now seen corresponding path program 1 times [2020-10-13 15:10:58,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:10:58,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694835052] [2020-10-13 15:10:58,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:10:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:10:58,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:59,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:59,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:59,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:00,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:00,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:01,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:03,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:11:03,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-13 15:11:03,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:11:03,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-13 15:11:03,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:11:03,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 15:11:03,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-13 15:11:03,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 15:11:03,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:11:04,482 WARN L193 SmtUtils]: Spent 915.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-13 15:11:04,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:11:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:11:04,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:04,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:11:04,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:11:04,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:11:04,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 15:11:04,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:11:04,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:11:04,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:11:04,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:11:04,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:11:04,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:11:04,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694835052] [2020-10-13 15:11:04,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:11:04,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 15:11:04,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586687389] [2020-10-13 15:11:04,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 15:11:04,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:11:04,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 15:11:04,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 15:11:04,629 INFO L87 Difference]: Start difference. First operand 1008 states and 1745 transitions. Second operand 9 states. [2020-10-13 15:11:05,394 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-10-13 15:11:13,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:11:13,567 INFO L93 Difference]: Finished difference Result 7460 states and 12638 transitions. [2020-10-13 15:11:13,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 15:11:13,567 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 218 [2020-10-13 15:11:13,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:11:13,608 INFO L225 Difference]: With dead ends: 7460 [2020-10-13 15:11:13,608 INFO L226 Difference]: Without dead ends: 7004 [2020-10-13 15:11:13,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=183, Invalid=417, Unknown=0, NotChecked=0, Total=600 [2020-10-13 15:11:13,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7004 states. [2020-10-13 15:11:13,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7004 to 2285. [2020-10-13 15:11:13,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2285 states. [2020-10-13 15:11:13,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2285 states to 2285 states and 3902 transitions. [2020-10-13 15:11:13,826 INFO L78 Accepts]: Start accepts. Automaton has 2285 states and 3902 transitions. Word has length 218 [2020-10-13 15:11:13,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:11:13,829 INFO L479 AbstractCegarLoop]: Abstraction has 2285 states and 3902 transitions. [2020-10-13 15:11:13,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 15:11:13,830 INFO L276 IsEmpty]: Start isEmpty. Operand 2285 states and 3902 transitions. [2020-10-13 15:11:13,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-13 15:11:13,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:11:13,835 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:11:13,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 15:11:13,835 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:11:13,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:11:13,836 INFO L82 PathProgramCache]: Analyzing trace with hash -657938097, now seen corresponding path program 1 times [2020-10-13 15:11:13,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:11:13,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117178716] [2020-10-13 15:11:13,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:11:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:11:14,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:14,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:14,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:15,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:15,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:15,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:17,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:18,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:11:18,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-13 15:11:18,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:11:18,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 15:11:18,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:11:18,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:11:18,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-13 15:11:18,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 15:11:18,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 15:11:20,006 WARN L193 SmtUtils]: Spent 846.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-13 15:11:20,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:11:20,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:11:20,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:20,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:11:20,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:11:20,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:11:20,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 15:11:20,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:11:20,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:11:20,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:11:20,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:11:20,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:11:20,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:11:20,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117178716] [2020-10-13 15:11:20,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:11:20,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:11:20,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726642747] [2020-10-13 15:11:20,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:11:20,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:11:20,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:11:20,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:11:20,205 INFO L87 Difference]: Start difference. First operand 2285 states and 3902 transitions. Second operand 5 states. [2020-10-13 15:11:21,188 WARN L193 SmtUtils]: Spent 885.00 ms on a formula simplification that was a NOOP. DAG size: 383 [2020-10-13 15:11:26,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:11:26,232 INFO L93 Difference]: Finished difference Result 7038 states and 11935 transitions. [2020-10-13 15:11:26,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:11:26,233 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 219 [2020-10-13 15:11:26,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:11:26,261 INFO L225 Difference]: With dead ends: 7038 [2020-10-13 15:11:26,261 INFO L226 Difference]: Without dead ends: 5487 [2020-10-13 15:11:26,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:11:26,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5487 states. [2020-10-13 15:11:26,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5487 to 3927. [2020-10-13 15:11:26,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3927 states. [2020-10-13 15:11:26,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3927 states to 3927 states and 6674 transitions. [2020-10-13 15:11:26,565 INFO L78 Accepts]: Start accepts. Automaton has 3927 states and 6674 transitions. Word has length 219 [2020-10-13 15:11:26,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:11:26,566 INFO L479 AbstractCegarLoop]: Abstraction has 3927 states and 6674 transitions. [2020-10-13 15:11:26,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:11:26,566 INFO L276 IsEmpty]: Start isEmpty. Operand 3927 states and 6674 transitions. [2020-10-13 15:11:26,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-13 15:11:26,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:11:26,572 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:11:26,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 15:11:26,578 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:11:26,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:11:26,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1017145553, now seen corresponding path program 1 times [2020-10-13 15:11:26,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:11:26,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12353795] [2020-10-13 15:11:26,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:11:26,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:11:26,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:27,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:27,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:27,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:28,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:28,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:29,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:31,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:11:31,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-13 15:11:31,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:11:31,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-13 15:11:31,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:11:31,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:11:31,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 179 [2020-10-13 15:11:31,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 15:11:31,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:11:32,493 WARN L193 SmtUtils]: Spent 640.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-13 15:11:32,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:11:32,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:11:32,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:32,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:11:32,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:11:32,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:11:32,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 15:11:32,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:11:32,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:11:32,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:11:32,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:11:32,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:11:32,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:11:32,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12353795] [2020-10-13 15:11:32,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:11:32,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:11:32,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917605360] [2020-10-13 15:11:32,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:11:32,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:11:32,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:11:32,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:11:32,608 INFO L87 Difference]: Start difference. First operand 3927 states and 6674 transitions. Second operand 5 states. [2020-10-13 15:11:33,328 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification that was a NOOP. DAG size: 383 [2020-10-13 15:11:38,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:11:38,563 INFO L93 Difference]: Finished difference Result 13322 states and 22541 transitions. [2020-10-13 15:11:38,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:11:38,564 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 220 [2020-10-13 15:11:38,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:11:38,616 INFO L225 Difference]: With dead ends: 13322 [2020-10-13 15:11:38,616 INFO L226 Difference]: Without dead ends: 10229 [2020-10-13 15:11:38,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:11:38,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10229 states. [2020-10-13 15:11:39,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10229 to 7120. [2020-10-13 15:11:39,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7120 states. [2020-10-13 15:11:39,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7120 states to 7120 states and 12058 transitions. [2020-10-13 15:11:39,282 INFO L78 Accepts]: Start accepts. Automaton has 7120 states and 12058 transitions. Word has length 220 [2020-10-13 15:11:39,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:11:39,283 INFO L479 AbstractCegarLoop]: Abstraction has 7120 states and 12058 transitions. [2020-10-13 15:11:39,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:11:39,283 INFO L276 IsEmpty]: Start isEmpty. Operand 7120 states and 12058 transitions. [2020-10-13 15:11:39,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-13 15:11:39,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:11:39,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:11:39,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 15:11:39,289 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:11:39,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:11:39,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1409689174, now seen corresponding path program 1 times [2020-10-13 15:11:39,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:11:39,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146568176] [2020-10-13 15:11:39,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:11:39,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:11:39,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:39,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:40,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:40,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:40,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:41,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:41,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:44,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:11:44,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-13 15:11:44,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:11:44,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 15:11:44,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:11:44,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:11:44,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-13 15:11:44,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 15:11:44,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:11:45,140 WARN L193 SmtUtils]: Spent 658.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-13 15:11:45,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:11:45,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:11:45,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:45,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:11:45,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:11:45,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:11:45,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 15:11:45,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:11:45,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:11:45,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:11:45,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:11:45,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:11:45,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:11:45,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146568176] [2020-10-13 15:11:45,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:11:45,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:11:45,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911162883] [2020-10-13 15:11:45,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:11:45,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:11:45,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:11:45,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:11:45,254 INFO L87 Difference]: Start difference. First operand 7120 states and 12058 transitions. Second operand 5 states. [2020-10-13 15:11:46,051 WARN L193 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 383 [2020-10-13 15:11:51,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:11:51,642 INFO L93 Difference]: Finished difference Result 25694 states and 43397 transitions. [2020-10-13 15:11:51,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:11:51,643 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 221 [2020-10-13 15:11:51,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:11:51,696 INFO L225 Difference]: With dead ends: 25694 [2020-10-13 15:11:51,696 INFO L226 Difference]: Without dead ends: 19524 [2020-10-13 15:11:51,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:11:51,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19524 states. [2020-10-13 15:11:52,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19524 to 13324. [2020-10-13 15:11:52,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13324 states. [2020-10-13 15:11:52,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13324 states to 13324 states and 22506 transitions. [2020-10-13 15:11:52,464 INFO L78 Accepts]: Start accepts. Automaton has 13324 states and 22506 transitions. Word has length 221 [2020-10-13 15:11:52,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:11:52,465 INFO L479 AbstractCegarLoop]: Abstraction has 13324 states and 22506 transitions. [2020-10-13 15:11:52,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:11:52,465 INFO L276 IsEmpty]: Start isEmpty. Operand 13324 states and 22506 transitions. [2020-10-13 15:11:52,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-13 15:11:52,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:11:52,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:11:52,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 15:11:52,472 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:11:52,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:11:52,472 INFO L82 PathProgramCache]: Analyzing trace with hash 698197560, now seen corresponding path program 1 times [2020-10-13 15:11:52,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:11:52,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649478664] [2020-10-13 15:11:52,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:11:52,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:11:52,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:52,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:53,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:53,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:54,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:54,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:54,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:57,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:11:57,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-13 15:11:57,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:11:57,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 15:11:57,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:11:57,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:11:57,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-10-13 15:11:57,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 15:11:57,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:11:58,324 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-13 15:11:58,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:11:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:11:58,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:58,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:11:58,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:11:58,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:11:58,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 15:11:58,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:11:58,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:11:58,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:11:58,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:11:58,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:11:58,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:11:58,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649478664] [2020-10-13 15:11:58,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:11:58,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:11:58,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274094627] [2020-10-13 15:11:58,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:11:58,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:11:58,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:11:58,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:11:58,403 INFO L87 Difference]: Start difference. First operand 13324 states and 22506 transitions. Second operand 5 states. [2020-10-13 15:11:59,144 WARN L193 SmtUtils]: Spent 681.00 ms on a formula simplification that was a NOOP. DAG size: 383 [2020-10-13 15:12:05,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:12:05,563 INFO L93 Difference]: Finished difference Result 50254 states and 84741 transitions. [2020-10-13 15:12:05,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:12:05,564 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 222 [2020-10-13 15:12:05,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:12:05,676 INFO L225 Difference]: With dead ends: 50254 [2020-10-13 15:12:05,676 INFO L226 Difference]: Without dead ends: 37944 [2020-10-13 15:12:05,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:12:05,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37944 states. [2020-10-13 15:12:07,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37944 to 25576. [2020-10-13 15:12:07,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25576 states. [2020-10-13 15:12:07,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25576 states to 25576 states and 43106 transitions. [2020-10-13 15:12:07,134 INFO L78 Accepts]: Start accepts. Automaton has 25576 states and 43106 transitions. Word has length 222 [2020-10-13 15:12:07,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:12:07,134 INFO L479 AbstractCegarLoop]: Abstraction has 25576 states and 43106 transitions. [2020-10-13 15:12:07,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:12:07,134 INFO L276 IsEmpty]: Start isEmpty. Operand 25576 states and 43106 transitions. [2020-10-13 15:12:07,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-13 15:12:07,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:12:07,140 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:12:07,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 15:12:07,141 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:12:07,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:12:07,141 INFO L82 PathProgramCache]: Analyzing trace with hash -536661240, now seen corresponding path program 1 times [2020-10-13 15:12:07,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:12:07,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253357095] [2020-10-13 15:12:07,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:12:07,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:12:08,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:08,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:08,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:09,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:09,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:09,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:10,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:12,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:12:12,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-13 15:12:12,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:12:12,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-13 15:12:12,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:12:12,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:12:12,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 200 [2020-10-13 15:12:12,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 15:12:12,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:12:13,022 WARN L193 SmtUtils]: Spent 657.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-13 15:12:13,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:12:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:12:13,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:13,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:12:13,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:12:13,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:12:13,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 15:12:13,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:12:13,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:12:13,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:12:13,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:12:13,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:12:13,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:12:13,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253357095] [2020-10-13 15:12:13,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:12:13,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:12:13,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597866414] [2020-10-13 15:12:13,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:12:13,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:12:13,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:12:13,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:12:13,093 INFO L87 Difference]: Start difference. First operand 25576 states and 43106 transitions. Second operand 4 states. [2020-10-13 15:12:20,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:12:20,426 INFO L93 Difference]: Finished difference Result 70675 states and 118774 transitions. [2020-10-13 15:12:20,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:12:20,427 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 224 [2020-10-13 15:12:20,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:12:20,532 INFO L225 Difference]: With dead ends: 70675 [2020-10-13 15:12:20,532 INFO L226 Difference]: Without dead ends: 46113 [2020-10-13 15:12:20,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:12:20,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46113 states. [2020-10-13 15:12:23,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46113 to 45886. [2020-10-13 15:12:23,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45886 states. [2020-10-13 15:12:23,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45886 states to 45886 states and 76787 transitions. [2020-10-13 15:12:23,174 INFO L78 Accepts]: Start accepts. Automaton has 45886 states and 76787 transitions. Word has length 224 [2020-10-13 15:12:23,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:12:23,174 INFO L479 AbstractCegarLoop]: Abstraction has 45886 states and 76787 transitions. [2020-10-13 15:12:23,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:12:23,175 INFO L276 IsEmpty]: Start isEmpty. Operand 45886 states and 76787 transitions. [2020-10-13 15:12:23,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-13 15:12:23,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:12:23,179 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:12:23,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 15:12:23,179 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:12:23,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:12:23,180 INFO L82 PathProgramCache]: Analyzing trace with hash -697962776, now seen corresponding path program 1 times [2020-10-13 15:12:23,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:12:23,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622837467] [2020-10-13 15:12:23,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:12:23,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:12:23,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:23,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:23,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:24,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:24,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:24,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:24,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:27,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:12:27,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-13 15:12:27,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:12:27,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4397 [2020-10-13 15:12:27,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:12:27,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:12:27,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-13 15:12:27,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 15:12:27,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:12:28,445 WARN L193 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-13 15:12:28,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:12:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:12:28,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:28,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:12:28,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:12:28,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:12:28,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 15:12:28,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:12:28,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:12:28,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:12:28,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:12:28,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:12:28,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:12:28,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622837467] [2020-10-13 15:12:28,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:12:28,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:12:28,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187371930] [2020-10-13 15:12:28,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:12:28,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:12:28,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:12:28,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:12:28,523 INFO L87 Difference]: Start difference. First operand 45886 states and 76787 transitions. Second operand 4 states. [2020-10-13 15:12:29,517 WARN L193 SmtUtils]: Spent 940.00 ms on a formula simplification that was a NOOP. DAG size: 383 [2020-10-13 15:12:37,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:12:37,459 INFO L93 Difference]: Finished difference Result 106966 states and 178954 transitions. [2020-10-13 15:12:37,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:12:37,459 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 225 [2020-10-13 15:12:37,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:12:37,571 INFO L225 Difference]: With dead ends: 106966 [2020-10-13 15:12:37,571 INFO L226 Difference]: Without dead ends: 61661 [2020-10-13 15:12:37,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:12:37,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61661 states. [2020-10-13 15:12:41,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61661 to 61583. [2020-10-13 15:12:41,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61583 states. [2020-10-13 15:12:41,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61583 states to 61583 states and 102802 transitions. [2020-10-13 15:12:41,253 INFO L78 Accepts]: Start accepts. Automaton has 61583 states and 102802 transitions. Word has length 225 [2020-10-13 15:12:41,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:12:41,254 INFO L479 AbstractCegarLoop]: Abstraction has 61583 states and 102802 transitions. [2020-10-13 15:12:41,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:12:41,254 INFO L276 IsEmpty]: Start isEmpty. Operand 61583 states and 102802 transitions. [2020-10-13 15:12:41,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-13 15:12:41,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:12:41,260 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:12:41,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 15:12:41,261 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:12:41,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:12:41,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1664970060, now seen corresponding path program 1 times [2020-10-13 15:12:41,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:12:41,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250478441] [2020-10-13 15:12:41,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:12:41,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:12:41,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:41,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:43,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:44,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:44,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:45,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:46,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:12:46,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-13 15:12:46,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:12:46,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:12:46,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:12:46,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:12:46,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 187 [2020-10-13 15:12:46,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:12:46,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:12:47,138 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-13 15:12:47,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:12:47,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:12:47,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:47,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:12:47,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:12:47,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:12:47,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 15:12:47,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:12:47,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:12:47,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:12:47,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:12:47,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:12:47,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:12:47,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250478441] [2020-10-13 15:12:47,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:12:47,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:12:47,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131392253] [2020-10-13 15:12:47,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:12:47,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:12:47,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:12:47,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:12:47,225 INFO L87 Difference]: Start difference. First operand 61583 states and 102802 transitions. Second operand 4 states. [2020-10-13 15:12:47,972 WARN L193 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 383 [2020-10-13 15:12:57,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:12:57,662 INFO L93 Difference]: Finished difference Result 126403 states and 211156 transitions. [2020-10-13 15:12:57,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:12:57,663 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 225 [2020-10-13 15:12:57,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:12:57,807 INFO L225 Difference]: With dead ends: 126403 [2020-10-13 15:12:57,808 INFO L226 Difference]: Without dead ends: 81519 [2020-10-13 15:12:57,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:12:57,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81519 states. [2020-10-13 15:13:03,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81519 to 81517. [2020-10-13 15:13:03,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81517 states. [2020-10-13 15:13:03,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81517 states to 81517 states and 135931 transitions. [2020-10-13 15:13:03,919 INFO L78 Accepts]: Start accepts. Automaton has 81517 states and 135931 transitions. Word has length 225 [2020-10-13 15:13:03,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:13:03,919 INFO L479 AbstractCegarLoop]: Abstraction has 81517 states and 135931 transitions. [2020-10-13 15:13:03,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:13:03,920 INFO L276 IsEmpty]: Start isEmpty. Operand 81517 states and 135931 transitions. [2020-10-13 15:13:03,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-13 15:13:03,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:13:03,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:13:03,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 15:13:03,924 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:13:03,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:13:03,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1420045347, now seen corresponding path program 1 times [2020-10-13 15:13:03,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:13:03,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309432983] [2020-10-13 15:13:03,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:13:04,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:13:04,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:04,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:04,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:04,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:05,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:07,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:07,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:07,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:07,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:09,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:13:09,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-13 15:13:09,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 15:13:09,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5099 [2020-10-13 15:13:09,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:13:09,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:13:09,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-13 15:13:09,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 15:13:09,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:13:09,956 WARN L193 SmtUtils]: Spent 656.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-13 15:13:09,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:13:09,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:13:09,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:09,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:13:09,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:13:09,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:13:09,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 15:13:09,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:13:09,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:13:09,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:13:09,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:13:09,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:13:10,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:13:10,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309432983] [2020-10-13 15:13:10,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:13:10,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 15:13:10,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810607174] [2020-10-13 15:13:10,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 15:13:10,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:13:10,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 15:13:10,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:13:10,066 INFO L87 Difference]: Start difference. First operand 81517 states and 135931 transitions. Second operand 8 states. [2020-10-13 15:13:10,892 WARN L193 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 396 [2020-10-13 15:13:30,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:13:30,144 INFO L93 Difference]: Finished difference Result 304239 states and 507339 transitions. [2020-10-13 15:13:30,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 15:13:30,145 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 228 [2020-10-13 15:13:30,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:13:30,574 INFO L225 Difference]: With dead ends: 304239 [2020-10-13 15:13:30,574 INFO L226 Difference]: Without dead ends: 226725 [2020-10-13 15:13:30,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-13 15:13:30,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226725 states. [2020-10-13 15:13:38,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226725 to 81517. [2020-10-13 15:13:38,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81517 states. [2020-10-13 15:13:38,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81517 states to 81517 states and 135836 transitions. [2020-10-13 15:13:38,966 INFO L78 Accepts]: Start accepts. Automaton has 81517 states and 135836 transitions. Word has length 228 [2020-10-13 15:13:38,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:13:38,967 INFO L479 AbstractCegarLoop]: Abstraction has 81517 states and 135836 transitions. [2020-10-13 15:13:38,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 15:13:38,967 INFO L276 IsEmpty]: Start isEmpty. Operand 81517 states and 135836 transitions. [2020-10-13 15:13:38,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-13 15:13:38,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:13:38,971 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:13:38,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 15:13:38,971 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:13:38,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:13:38,971 INFO L82 PathProgramCache]: Analyzing trace with hash 805790841, now seen corresponding path program 1 times [2020-10-13 15:13:38,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:13:38,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031650471] [2020-10-13 15:13:38,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:13:39,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:13:39,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:39,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:39,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:40,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:40,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:42,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:42,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:42,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:42,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:42,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:43,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:43,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:43,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:43,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:44,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:13:44,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-13 15:13:44,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 15:13:44,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-13 15:13:44,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:13:44,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:13:44,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-13 15:13:44,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:13:44,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:13:44,849 WARN L193 SmtUtils]: Spent 640.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-13 15:13:44,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:13:44,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:13:44,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:44,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:13:44,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:13:44,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:13:44,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 15:13:44,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:13:44,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:13:44,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:13:44,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:13:44,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:13:44,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:13:44,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031650471] [2020-10-13 15:13:44,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:13:44,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:13:44,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794979805] [2020-10-13 15:13:44,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:13:44,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:13:44,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:13:44,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:13:44,915 INFO L87 Difference]: Start difference. First operand 81517 states and 135836 transitions. Second operand 5 states. [2020-10-13 15:14:01,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:14:01,210 INFO L93 Difference]: Finished difference Result 232961 states and 387728 transitions. [2020-10-13 15:14:01,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:14:01,211 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 229 [2020-10-13 15:14:01,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:14:01,468 INFO L225 Difference]: With dead ends: 232961 [2020-10-13 15:14:01,468 INFO L226 Difference]: Without dead ends: 152437 [2020-10-13 15:14:01,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:14:01,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152437 states.