/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 00:46:23,214 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 00:46:23,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 00:46:23,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 00:46:23,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 00:46:23,252 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 00:46:23,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 00:46:23,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 00:46:23,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 00:46:23,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 00:46:23,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 00:46:23,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 00:46:23,261 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 00:46:23,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 00:46:23,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 00:46:23,264 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 00:46:23,266 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 00:46:23,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 00:46:23,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 00:46:23,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 00:46:23,284 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 [2020-08-22 00:46:23,335 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 00:46:23,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 00:46:23,337 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 00:46:23,338 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 00:46:23,338 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 00:46:23,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 00:46:23,338 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 00:46:23,338 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 00:46:23,339 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 00:46:23,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 00:46:23,339 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 00:46:23,339 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 00:46:23,339 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 00:46:23,339 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 00:46:23,340 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 00:46:23,341 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 00:46:23,341 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 00:46:23,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 00:46:23,342 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 00:46:23,342 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 00:46:23,342 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 00:46:23,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:46:23,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 00:46:23,343 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 00:46:23,343 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 00:46:23,343 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 00:46:23,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 00:46:23,344 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 00:46:23,344 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 00:46:23,344 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-08-22 00:46:23,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 00:46:23,675 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 00:46:23,679 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 00:46:23,680 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 00:46:23,681 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 00:46:23,682 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-08-22 00:46:23,755 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c445674f5/68f0ebc7963c45b9a662f66590fe07be/FLAG48dfc00e5 [2020-08-22 00:46:24,368 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 00:46:24,369 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-08-22 00:46:24,383 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c445674f5/68f0ebc7963c45b9a662f66590fe07be/FLAG48dfc00e5 [2020-08-22 00:46:24,614 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c445674f5/68f0ebc7963c45b9a662f66590fe07be [2020-08-22 00:46:24,622 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 00:46:24,623 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 00:46:24,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 00:46:24,624 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 00:46:24,628 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 00:46:24,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:46:24" (1/1) ... [2020-08-22 00:46:24,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a81b491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:46:24, skipping insertion in model container [2020-08-22 00:46:24,632 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:46:24" (1/1) ... [2020-08-22 00:46:24,640 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 00:46:24,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 00:46:25,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:46:25,368 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 00:46:25,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:46:25,890 INFO L208 MainTranslator]: Completed translation [2020-08-22 00:46:25,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:46:25 WrapperNode [2020-08-22 00:46:25,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 00:46:25,893 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 00:46:25,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 00:46:25,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 00:46:25,910 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:46:25" (1/1) ... [2020-08-22 00:46:25,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:46:25" (1/1) ... [2020-08-22 00:46:25,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:46:25" (1/1) ... [2020-08-22 00:46:25,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:46:25" (1/1) ... [2020-08-22 00:46:26,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:46:25" (1/1) ... [2020-08-22 00:46:26,061 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:46:25" (1/1) ... [2020-08-22 00:46:26,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:46:25" (1/1) ... [2020-08-22 00:46:26,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 00:46:26,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 00:46:26,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 00:46:26,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 00:46:26,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:46:25" (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 [2020-08-22 00:46:26,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 00:46:26,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 00:46:26,177 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 00:46:26,177 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 00:46:26,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 00:46:26,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-22 00:46:26,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-22 00:46:26,178 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-22 00:46:26,179 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 00:46:26,179 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 00:46:26,179 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-22 00:46:26,179 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-22 00:46:26,179 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-08-22 00:46:26,180 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-08-22 00:46:26,180 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-08-22 00:46:26,180 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-22 00:46:26,180 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-22 00:46:26,181 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 00:46:26,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 00:46:26,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 00:46:27,959 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 00:46:27,960 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 00:46:27,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:46:27 BoogieIcfgContainer [2020-08-22 00:46:27,968 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 00:46:27,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 00:46:27,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 00:46:27,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 00:46:27,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 12:46:24" (1/3) ... [2020-08-22 00:46:27,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd0c51e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:46:27, skipping insertion in model container [2020-08-22 00:46:27,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:46:25" (2/3) ... [2020-08-22 00:46:27,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd0c51e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:46:27, skipping insertion in model container [2020-08-22 00:46:27,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:46:27" (3/3) ... [2020-08-22 00:46:27,977 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-08-22 00:46:27,989 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 00:46:27,998 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-08-22 00:46:28,014 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-08-22 00:46:28,046 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 00:46:28,046 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 00:46:28,046 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 00:46:28,046 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 00:46:28,046 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 00:46:28,046 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 00:46:28,047 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 00:46:28,047 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 00:46:28,074 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states. [2020-08-22 00:46:28,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-22 00:46:28,094 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:46:28,095 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] [2020-08-22 00:46:28,096 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:46:28,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:46:28,103 INFO L82 PathProgramCache]: Analyzing trace with hash 604537660, now seen corresponding path program 1 times [2020-08-22 00:46:28,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:46:28,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059234040] [2020-08-22 00:46:28,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:46:28,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:29,165 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 00:46:29,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:46:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:29,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:46:29,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059234040] [2020-08-22 00:46:29,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:46:29,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 00:46:29,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099768998] [2020-08-22 00:46:29,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 00:46:29,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:46:29,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 00:46:29,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:46:29,306 INFO L87 Difference]: Start difference. First operand 412 states. Second operand 4 states. [2020-08-22 00:46:29,622 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-08-22 00:46:32,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:46:32,435 INFO L93 Difference]: Finished difference Result 754 states and 1320 transitions. [2020-08-22 00:46:32,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 00:46:32,438 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-08-22 00:46:32,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:46:32,459 INFO L225 Difference]: With dead ends: 754 [2020-08-22 00:46:32,459 INFO L226 Difference]: Without dead ends: 593 [2020-08-22 00:46:32,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 00:46:32,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2020-08-22 00:46:32,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 591. [2020-08-22 00:46:32,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-08-22 00:46:32,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 870 transitions. [2020-08-22 00:46:32,574 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 870 transitions. Word has length 146 [2020-08-22 00:46:32,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:46:32,575 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 870 transitions. [2020-08-22 00:46:32,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 00:46:32,575 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 870 transitions. [2020-08-22 00:46:32,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-22 00:46:32,583 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:46:32,583 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] [2020-08-22 00:46:32,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 00:46:32,591 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:46:32,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:46:32,591 INFO L82 PathProgramCache]: Analyzing trace with hash 694944860, now seen corresponding path program 1 times [2020-08-22 00:46:32,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:46:32,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [579462435] [2020-08-22 00:46:32,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:46:32,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:33,138 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 00:46:33,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:46:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:33,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:46:33,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [579462435] [2020-08-22 00:46:33,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:46:33,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 00:46:33,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664099677] [2020-08-22 00:46:33,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 00:46:33,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:46:33,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 00:46:33,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:46:33,189 INFO L87 Difference]: Start difference. First operand 591 states and 870 transitions. Second operand 4 states. [2020-08-22 00:46:33,457 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-08-22 00:46:35,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:46:35,529 INFO L93 Difference]: Finished difference Result 1190 states and 1805 transitions. [2020-08-22 00:46:35,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 00:46:35,530 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-08-22 00:46:35,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:46:35,543 INFO L225 Difference]: With dead ends: 1190 [2020-08-22 00:46:35,543 INFO L226 Difference]: Without dead ends: 961 [2020-08-22 00:46:35,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 00:46:35,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2020-08-22 00:46:35,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 959. [2020-08-22 00:46:35,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 959 states. [2020-08-22 00:46:35,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1434 transitions. [2020-08-22 00:46:35,620 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1434 transitions. Word has length 146 [2020-08-22 00:46:35,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:46:35,621 INFO L479 AbstractCegarLoop]: Abstraction has 959 states and 1434 transitions. [2020-08-22 00:46:35,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 00:46:35,621 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1434 transitions. [2020-08-22 00:46:35,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-22 00:46:35,624 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:46:35,625 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] [2020-08-22 00:46:35,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 00:46:35,625 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:46:35,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:46:35,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1369993092, now seen corresponding path program 1 times [2020-08-22 00:46:35,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:46:35,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522852978] [2020-08-22 00:46:35,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:46:35,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:36,020 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 00:46:36,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:46:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:36,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:46:36,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522852978] [2020-08-22 00:46:36,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:46:36,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 00:46:36,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41155294] [2020-08-22 00:46:36,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 00:46:36,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:46:36,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 00:46:36,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:46:36,068 INFO L87 Difference]: Start difference. First operand 959 states and 1434 transitions. Second operand 4 states. [2020-08-22 00:46:36,358 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-08-22 00:46:38,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:46:38,567 INFO L93 Difference]: Finished difference Result 2090 states and 3210 transitions. [2020-08-22 00:46:38,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 00:46:38,569 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-08-22 00:46:38,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:46:38,582 INFO L225 Difference]: With dead ends: 2090 [2020-08-22 00:46:38,583 INFO L226 Difference]: Without dead ends: 1701 [2020-08-22 00:46:38,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 00:46:38,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2020-08-22 00:46:38,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1699. [2020-08-22 00:46:38,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1699 states. [2020-08-22 00:46:38,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2566 transitions. [2020-08-22 00:46:38,700 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2566 transitions. Word has length 146 [2020-08-22 00:46:38,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:46:38,701 INFO L479 AbstractCegarLoop]: Abstraction has 1699 states and 2566 transitions. [2020-08-22 00:46:38,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 00:46:38,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2566 transitions. [2020-08-22 00:46:38,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-22 00:46:38,707 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:46:38,708 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] [2020-08-22 00:46:38,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 00:46:38,710 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:46:38,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:46:38,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1370331716, now seen corresponding path program 1 times [2020-08-22 00:46:38,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:46:38,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299822872] [2020-08-22 00:46:38,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:46:38,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:39,220 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 00:46:39,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:46:39,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:39,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:46:39,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1299822872] [2020-08-22 00:46:39,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:46:39,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 00:46:39,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053310269] [2020-08-22 00:46:39,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 00:46:39,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:46:39,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 00:46:39,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 00:46:39,281 INFO L87 Difference]: Start difference. First operand 1699 states and 2566 transitions. Second operand 5 states. [2020-08-22 00:46:43,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:46:43,268 INFO L93 Difference]: Finished difference Result 4967 states and 7485 transitions. [2020-08-22 00:46:43,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 00:46:43,269 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-08-22 00:46:43,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:46:43,287 INFO L225 Difference]: With dead ends: 4967 [2020-08-22 00:46:43,288 INFO L226 Difference]: Without dead ends: 3281 [2020-08-22 00:46:43,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:46:43,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2020-08-22 00:46:43,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 3235. [2020-08-22 00:46:43,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3235 states. [2020-08-22 00:46:43,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3235 states to 3235 states and 4851 transitions. [2020-08-22 00:46:43,449 INFO L78 Accepts]: Start accepts. Automaton has 3235 states and 4851 transitions. Word has length 146 [2020-08-22 00:46:43,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:46:43,450 INFO L479 AbstractCegarLoop]: Abstraction has 3235 states and 4851 transitions. [2020-08-22 00:46:43,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 00:46:43,450 INFO L276 IsEmpty]: Start isEmpty. Operand 3235 states and 4851 transitions. [2020-08-22 00:46:43,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-22 00:46:43,456 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:46:43,456 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] [2020-08-22 00:46:43,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 00:46:43,459 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:46:43,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:46:43,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1648495204, now seen corresponding path program 1 times [2020-08-22 00:46:43,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:46:43,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044712926] [2020-08-22 00:46:43,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:46:43,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:43,764 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 00:46:43,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:46:43,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:43,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:46:43,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044712926] [2020-08-22 00:46:43,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:46:43,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 00:46:43,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241539959] [2020-08-22 00:46:43,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 00:46:43,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:46:43,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 00:46:43,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:46:43,804 INFO L87 Difference]: Start difference. First operand 3235 states and 4851 transitions. Second operand 4 states. [2020-08-22 00:46:46,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:46:46,372 INFO L93 Difference]: Finished difference Result 9659 states and 14483 transitions. [2020-08-22 00:46:46,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 00:46:46,373 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2020-08-22 00:46:46,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:46:46,407 INFO L225 Difference]: With dead ends: 9659 [2020-08-22 00:46:46,407 INFO L226 Difference]: Without dead ends: 6456 [2020-08-22 00:46:46,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:46:46,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6456 states. [2020-08-22 00:46:46,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6456 to 3237. [2020-08-22 00:46:46,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3237 states. [2020-08-22 00:46:46,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3237 states to 3237 states and 4853 transitions. [2020-08-22 00:46:46,688 INFO L78 Accepts]: Start accepts. Automaton has 3237 states and 4853 transitions. Word has length 147 [2020-08-22 00:46:46,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:46:46,688 INFO L479 AbstractCegarLoop]: Abstraction has 3237 states and 4853 transitions. [2020-08-22 00:46:46,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 00:46:46,688 INFO L276 IsEmpty]: Start isEmpty. Operand 3237 states and 4853 transitions. [2020-08-22 00:46:46,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-22 00:46:46,694 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:46:46,694 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] [2020-08-22 00:46:46,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 00:46:46,695 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:46:46,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:46:46,698 INFO L82 PathProgramCache]: Analyzing trace with hash 921116989, now seen corresponding path program 1 times [2020-08-22 00:46:46,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:46:46,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142825065] [2020-08-22 00:46:46,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:46:46,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:47,153 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 00:46:47,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:46:47,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:47,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:46:47,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2142825065] [2020-08-22 00:46:47,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:46:47,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 00:46:47,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449057251] [2020-08-22 00:46:47,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 00:46:47,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:46:47,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 00:46:47,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 00:46:47,235 INFO L87 Difference]: Start difference. First operand 3237 states and 4853 transitions. Second operand 5 states. [2020-08-22 00:46:50,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:46:50,228 INFO L93 Difference]: Finished difference Result 9441 states and 14115 transitions. [2020-08-22 00:46:50,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 00:46:50,229 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-08-22 00:46:50,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:46:50,258 INFO L225 Difference]: With dead ends: 9441 [2020-08-22 00:46:50,258 INFO L226 Difference]: Without dead ends: 6238 [2020-08-22 00:46:50,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:46:50,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6238 states. [2020-08-22 00:46:50,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6238 to 6192. [2020-08-22 00:46:50,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6192 states. [2020-08-22 00:46:50,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6192 states to 6192 states and 9193 transitions. [2020-08-22 00:46:50,607 INFO L78 Accepts]: Start accepts. Automaton has 6192 states and 9193 transitions. Word has length 148 [2020-08-22 00:46:50,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:46:50,607 INFO L479 AbstractCegarLoop]: Abstraction has 6192 states and 9193 transitions. [2020-08-22 00:46:50,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 00:46:50,607 INFO L276 IsEmpty]: Start isEmpty. Operand 6192 states and 9193 transitions. [2020-08-22 00:46:50,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-22 00:46:50,616 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:46:50,616 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] [2020-08-22 00:46:50,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 00:46:50,617 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:46:50,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:46:50,617 INFO L82 PathProgramCache]: Analyzing trace with hash 239618117, now seen corresponding path program 1 times [2020-08-22 00:46:50,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:46:50,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39639552] [2020-08-22 00:46:50,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:46:50,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:50,888 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 00:46:50,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:46:50,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:50,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:46:50,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39639552] [2020-08-22 00:46:50,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:46:50,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 00:46:50,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918282310] [2020-08-22 00:46:50,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 00:46:50,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:46:50,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 00:46:50,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:46:50,928 INFO L87 Difference]: Start difference. First operand 6192 states and 9193 transitions. Second operand 4 states. [2020-08-22 00:46:54,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:46:54,233 INFO L93 Difference]: Finished difference Result 18492 states and 27451 transitions. [2020-08-22 00:46:54,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 00:46:54,233 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-08-22 00:46:54,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:46:54,280 INFO L225 Difference]: With dead ends: 18492 [2020-08-22 00:46:54,280 INFO L226 Difference]: Without dead ends: 12348 [2020-08-22 00:46:54,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:46:54,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12348 states. [2020-08-22 00:46:54,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12348 to 6196. [2020-08-22 00:46:54,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6196 states. [2020-08-22 00:46:54,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 9197 transitions. [2020-08-22 00:46:54,719 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 9197 transitions. Word has length 149 [2020-08-22 00:46:54,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:46:54,719 INFO L479 AbstractCegarLoop]: Abstraction has 6196 states and 9197 transitions. [2020-08-22 00:46:54,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 00:46:54,719 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 9197 transitions. [2020-08-22 00:46:54,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-22 00:46:54,729 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:46:54,729 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] [2020-08-22 00:46:54,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 00:46:54,729 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:46:54,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:46:54,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1772203169, now seen corresponding path program 1 times [2020-08-22 00:46:54,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:46:54,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752926982] [2020-08-22 00:46:54,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:46:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:55,036 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 00:46:55,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:46:55,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:55,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:46:55,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752926982] [2020-08-22 00:46:55,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:46:55,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 00:46:55,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942423389] [2020-08-22 00:46:55,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 00:46:55,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:46:55,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 00:46:55,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:46:55,091 INFO L87 Difference]: Start difference. First operand 6196 states and 9197 transitions. Second operand 4 states. [2020-08-22 00:46:58,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:46:58,350 INFO L93 Difference]: Finished difference Result 16495 states and 24448 transitions. [2020-08-22 00:46:58,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 00:46:58,350 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-08-22 00:46:58,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:46:58,377 INFO L225 Difference]: With dead ends: 16495 [2020-08-22 00:46:58,377 INFO L226 Difference]: Without dead ends: 10615 [2020-08-22 00:46:58,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:46:58,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10615 states. [2020-08-22 00:46:58,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10615 to 10569. [2020-08-22 00:46:58,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10569 states. [2020-08-22 00:46:58,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10569 states to 10569 states and 15484 transitions. [2020-08-22 00:46:58,965 INFO L78 Accepts]: Start accepts. Automaton has 10569 states and 15484 transitions. Word has length 150 [2020-08-22 00:46:58,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:46:58,967 INFO L479 AbstractCegarLoop]: Abstraction has 10569 states and 15484 transitions. [2020-08-22 00:46:58,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 00:46:58,968 INFO L276 IsEmpty]: Start isEmpty. Operand 10569 states and 15484 transitions. [2020-08-22 00:46:58,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-22 00:46:58,982 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:46:58,982 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] [2020-08-22 00:46:58,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 00:46:58,983 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:46:58,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:46:58,983 INFO L82 PathProgramCache]: Analyzing trace with hash 251552574, now seen corresponding path program 1 times [2020-08-22 00:46:58,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:46:58,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828192195] [2020-08-22 00:46:58,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:46:59,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:59,341 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 00:46:59,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:46:59,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:46:59,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:46:59,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828192195] [2020-08-22 00:46:59,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:46:59,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 00:46:59,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31050388] [2020-08-22 00:46:59,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 00:46:59,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:46:59,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 00:46:59,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 00:46:59,378 INFO L87 Difference]: Start difference. First operand 10569 states and 15484 transitions. Second operand 5 states. [2020-08-22 00:47:01,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:47:01,747 INFO L93 Difference]: Finished difference Result 21564 states and 31467 transitions. [2020-08-22 00:47:01,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 00:47:01,747 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-08-22 00:47:01,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:47:01,766 INFO L225 Difference]: With dead ends: 21564 [2020-08-22 00:47:01,766 INFO L226 Difference]: Without dead ends: 10851 [2020-08-22 00:47:01,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:47:01,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10851 states. [2020-08-22 00:47:02,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10851 to 10805. [2020-08-22 00:47:02,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10805 states. [2020-08-22 00:47:02,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10805 states to 10805 states and 15660 transitions. [2020-08-22 00:47:02,189 INFO L78 Accepts]: Start accepts. Automaton has 10805 states and 15660 transitions. Word has length 150 [2020-08-22 00:47:02,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:47:02,189 INFO L479 AbstractCegarLoop]: Abstraction has 10805 states and 15660 transitions. [2020-08-22 00:47:02,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 00:47:02,190 INFO L276 IsEmpty]: Start isEmpty. Operand 10805 states and 15660 transitions. [2020-08-22 00:47:02,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-22 00:47:02,202 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:47:02,202 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] [2020-08-22 00:47:02,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 00:47:02,202 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:47:02,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:47:02,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1535594178, now seen corresponding path program 1 times [2020-08-22 00:47:02,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:47:02,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538053570] [2020-08-22 00:47:02,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:47:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:47:02,549 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 00:47:02,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:47:02,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:47:02,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:47:02,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538053570] [2020-08-22 00:47:02,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:47:02,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 00:47:02,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598193830] [2020-08-22 00:47:02,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 00:47:02,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:47:02,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 00:47:02,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 00:47:02,601 INFO L87 Difference]: Start difference. First operand 10805 states and 15660 transitions. Second operand 5 states. [2020-08-22 00:47:03,098 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-08-22 00:47:06,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:47:06,126 INFO L93 Difference]: Finished difference Result 15230 states and 22013 transitions. [2020-08-22 00:47:06,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 00:47:06,126 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-08-22 00:47:06,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:47:06,146 INFO L225 Difference]: With dead ends: 15230 [2020-08-22 00:47:06,147 INFO L226 Difference]: Without dead ends: 10851 [2020-08-22 00:47:06,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:47:06,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10851 states. [2020-08-22 00:47:06,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10851 to 10569. [2020-08-22 00:47:06,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10569 states. [2020-08-22 00:47:06,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10569 states to 10569 states and 15362 transitions. [2020-08-22 00:47:06,653 INFO L78 Accepts]: Start accepts. Automaton has 10569 states and 15362 transitions. Word has length 150 [2020-08-22 00:47:06,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:47:06,653 INFO L479 AbstractCegarLoop]: Abstraction has 10569 states and 15362 transitions. [2020-08-22 00:47:06,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 00:47:06,653 INFO L276 IsEmpty]: Start isEmpty. Operand 10569 states and 15362 transitions. [2020-08-22 00:47:06,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-22 00:47:06,663 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:47:06,663 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] [2020-08-22 00:47:06,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 00:47:06,664 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:47:06,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:47:06,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1232731994, now seen corresponding path program 1 times [2020-08-22 00:47:06,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:47:06,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676255541] [2020-08-22 00:47:06,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:47:06,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:47:06,943 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 00:47:06,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:47:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:47:06,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:47:06,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676255541] [2020-08-22 00:47:06,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:47:06,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 00:47:06,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332096983] [2020-08-22 00:47:06,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 00:47:06,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:47:06,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 00:47:06,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:47:06,996 INFO L87 Difference]: Start difference. First operand 10569 states and 15362 transitions. Second operand 4 states. [2020-08-22 00:47:10,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:47:10,688 INFO L93 Difference]: Finished difference Result 25409 states and 36872 transitions. [2020-08-22 00:47:10,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 00:47:10,689 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-08-22 00:47:10,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:47:10,720 INFO L225 Difference]: With dead ends: 25409 [2020-08-22 00:47:10,720 INFO L226 Difference]: Without dead ends: 21030 [2020-08-22 00:47:10,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:47:10,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21030 states. [2020-08-22 00:47:11,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21030 to 10577. [2020-08-22 00:47:11,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10577 states. [2020-08-22 00:47:11,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10577 states to 10577 states and 15370 transitions. [2020-08-22 00:47:11,379 INFO L78 Accepts]: Start accepts. Automaton has 10577 states and 15370 transitions. Word has length 151 [2020-08-22 00:47:11,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:47:11,380 INFO L479 AbstractCegarLoop]: Abstraction has 10577 states and 15370 transitions. [2020-08-22 00:47:11,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 00:47:11,380 INFO L276 IsEmpty]: Start isEmpty. Operand 10577 states and 15370 transitions. [2020-08-22 00:47:11,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-22 00:47:11,387 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:47:11,388 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] [2020-08-22 00:47:11,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 00:47:11,388 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:47:11,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:47:11,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1234425885, now seen corresponding path program 1 times [2020-08-22 00:47:11,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:47:11,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295174624] [2020-08-22 00:47:11,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:47:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:47:11,785 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 00:47:11,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:47:11,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:47:11,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:47:11,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295174624] [2020-08-22 00:47:11,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:47:11,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 00:47:11,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141199300] [2020-08-22 00:47:11,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 00:47:11,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:47:11,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 00:47:11,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 00:47:11,841 INFO L87 Difference]: Start difference. First operand 10577 states and 15370 transitions. Second operand 5 states. [2020-08-22 00:47:15,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:47:15,275 INFO L93 Difference]: Finished difference Result 30843 states and 44647 transitions. [2020-08-22 00:47:15,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 00:47:15,276 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-08-22 00:47:15,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:47:15,295 INFO L225 Difference]: With dead ends: 30843 [2020-08-22 00:47:15,295 INFO L226 Difference]: Without dead ends: 20313 [2020-08-22 00:47:15,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:47:15,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20313 states. [2020-08-22 00:47:16,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20313 to 20283. [2020-08-22 00:47:16,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20283 states. [2020-08-22 00:47:16,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20283 states to 20283 states and 29041 transitions. [2020-08-22 00:47:16,196 INFO L78 Accepts]: Start accepts. Automaton has 20283 states and 29041 transitions. Word has length 152 [2020-08-22 00:47:16,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:47:16,196 INFO L479 AbstractCegarLoop]: Abstraction has 20283 states and 29041 transitions. [2020-08-22 00:47:16,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 00:47:16,196 INFO L276 IsEmpty]: Start isEmpty. Operand 20283 states and 29041 transitions. [2020-08-22 00:47:16,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-22 00:47:16,209 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:47:16,209 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] [2020-08-22 00:47:16,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 00:47:16,210 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:47:16,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:47:16,210 INFO L82 PathProgramCache]: Analyzing trace with hash -695536157, now seen corresponding path program 1 times [2020-08-22 00:47:16,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:47:16,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952550091] [2020-08-22 00:47:16,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:47:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:47:16,572 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 00:47:16,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:47:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:47:16,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:47:16,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952550091] [2020-08-22 00:47:16,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:47:16,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 00:47:16,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265224082] [2020-08-22 00:47:16,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 00:47:16,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:47:16,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 00:47:16,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 00:47:16,625 INFO L87 Difference]: Start difference. First operand 20283 states and 29041 transitions. Second operand 5 states. [2020-08-22 00:47:21,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:47:21,056 INFO L93 Difference]: Finished difference Result 54646 states and 77842 transitions. [2020-08-22 00:47:21,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 00:47:21,057 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-08-22 00:47:21,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:47:21,095 INFO L225 Difference]: With dead ends: 54646 [2020-08-22 00:47:21,095 INFO L226 Difference]: Without dead ends: 34484 [2020-08-22 00:47:21,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:47:21,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34484 states.