/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 false -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 [2020-08-21 13:29:13,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 13:29:13,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 13:29:13,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 13:29:13,324 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 13:29:13,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 13:29:13,337 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 13:29:13,340 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 13:29:13,342 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 13:29:13,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 13:29:13,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 13:29:13,349 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 13:29:13,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 13:29:13,352 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 13:29:13,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 13:29:13,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 13:29:13,358 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 13:29:13,359 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 13:29:13,361 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 13:29:13,368 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 13:29:13,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 13:29:13,372 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 13:29:13,373 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 13:29:13,374 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 13:29:13,377 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 13:29:13,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 13:29:13,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 13:29:13,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 13:29:13,389 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 [2020-08-21 13:29:13,431 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 13:29:13,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 13:29:13,433 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 13:29:13,434 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 13:29:13,434 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 13:29:13,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 13:29:13,434 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 13:29:13,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 13:29:13,435 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 13:29:13,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 13:29:13,436 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 13:29:13,437 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 13:29:13,437 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 13:29:13,437 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 13:29:13,437 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 13:29:13,438 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 13:29:13,438 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 13:29:13,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 13:29:13,438 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 13:29:13,438 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 13:29:13,438 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 13:29:13,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:29:13,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 13:29:13,439 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 13:29:13,439 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 13:29:13,439 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 13:29:13,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 13:29:13,440 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 13:29:13,440 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 13:29:13,440 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 -> false [2020-08-21 13:29:13,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 13:29:13,737 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 13:29:13,741 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 13:29:13,742 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 13:29:13,742 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 13:29:13,743 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-08-21 13:29:13,812 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4b8848cb/bd85e306d2d04f869a1433921797cf02/FLAGb885f0aa6 [2020-08-21 13:29:14,397 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 13:29:14,397 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-08-21 13:29:14,415 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4b8848cb/bd85e306d2d04f869a1433921797cf02/FLAGb885f0aa6 [2020-08-21 13:29:14,606 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4b8848cb/bd85e306d2d04f869a1433921797cf02 [2020-08-21 13:29:14,617 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 13:29:14,619 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 13:29:14,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 13:29:14,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 13:29:14,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 13:29:14,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:29:14" (1/1) ... [2020-08-21 13:29:14,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49d31571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:29:14, skipping insertion in model container [2020-08-21 13:29:14,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:29:14" (1/1) ... [2020-08-21 13:29:14,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 13:29:14,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 13:29:15,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:29:15,430 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 13:29:15,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:29:15,928 INFO L208 MainTranslator]: Completed translation [2020-08-21 13:29:15,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:29:15 WrapperNode [2020-08-21 13:29:15,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 13:29:15,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 13:29:15,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 13:29:15,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 13:29:15,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:29:15" (1/1) ... [2020-08-21 13:29:15,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:29:15" (1/1) ... [2020-08-21 13:29:15,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:29:15" (1/1) ... [2020-08-21 13:29:15,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:29:15" (1/1) ... [2020-08-21 13:29:15,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:29:15" (1/1) ... [2020-08-21 13:29:16,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:29:15" (1/1) ... [2020-08-21 13:29:16,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:29:15" (1/1) ... [2020-08-21 13:29:16,056 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 13:29:16,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 13:29:16,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 13:29:16,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 13:29:16,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:29:15" (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 [2020-08-21 13:29:16,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 13:29:16,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 13:29:16,149 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 13:29:16,150 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 13:29:16,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 13:29:16,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-21 13:29:16,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-21 13:29:16,151 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-21 13:29:16,152 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 13:29:16,152 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 13:29:16,152 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-21 13:29:16,153 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-21 13:29:16,153 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-08-21 13:29:16,154 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-08-21 13:29:16,154 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-08-21 13:29:16,155 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-21 13:29:16,155 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-21 13:29:16,155 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 13:29:16,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 13:29:16,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 13:29:17,849 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 13:29:17,850 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 13:29:17,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:29:17 BoogieIcfgContainer [2020-08-21 13:29:17,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 13:29:17,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 13:29:17,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 13:29:17,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 13:29:17,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 01:29:14" (1/3) ... [2020-08-21 13:29:17,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63aa2d60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:29:17, skipping insertion in model container [2020-08-21 13:29:17,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:29:15" (2/3) ... [2020-08-21 13:29:17,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63aa2d60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:29:17, skipping insertion in model container [2020-08-21 13:29:17,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:29:17" (3/3) ... [2020-08-21 13:29:17,866 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-08-21 13:29:17,878 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 13:29:17,887 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-08-21 13:29:17,903 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-08-21 13:29:17,931 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 13:29:17,931 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 13:29:17,931 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 13:29:17,932 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 13:29:17,932 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 13:29:17,932 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 13:29:17,932 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 13:29:17,932 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 13:29:17,964 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states. [2020-08-21 13:29:17,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-21 13:29:17,983 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:29:17,984 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] [2020-08-21 13:29:17,985 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:29:17,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:29:17,992 INFO L82 PathProgramCache]: Analyzing trace with hash 604537660, now seen corresponding path program 1 times [2020-08-21 13:29:18,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:29:18,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153866753] [2020-08-21 13:29:18,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:29:18,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:18,966 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-21 13:29:18,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:29:18,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:19,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:29:19,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153866753] [2020-08-21 13:29:19,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:29:19,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 13:29:19,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8563463] [2020-08-21 13:29:19,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 13:29:19,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:29:19,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 13:29:19,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:29:19,105 INFO L87 Difference]: Start difference. First operand 412 states. Second operand 4 states. [2020-08-21 13:29:19,471 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-08-21 13:29:22,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:29:22,179 INFO L93 Difference]: Finished difference Result 754 states and 1320 transitions. [2020-08-21 13:29:22,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 13:29:22,183 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-08-21 13:29:22,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:29:22,216 INFO L225 Difference]: With dead ends: 754 [2020-08-21 13:29:22,216 INFO L226 Difference]: Without dead ends: 593 [2020-08-21 13:29:22,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 13:29:22,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2020-08-21 13:29:22,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 591. [2020-08-21 13:29:22,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-08-21 13:29:22,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 870 transitions. [2020-08-21 13:29:22,374 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 870 transitions. Word has length 146 [2020-08-21 13:29:22,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:29:22,377 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 870 transitions. [2020-08-21 13:29:22,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 13:29:22,377 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 870 transitions. [2020-08-21 13:29:22,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-21 13:29:22,389 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:29:22,389 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] [2020-08-21 13:29:22,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 13:29:22,390 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:29:22,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:29:22,391 INFO L82 PathProgramCache]: Analyzing trace with hash 694944860, now seen corresponding path program 1 times [2020-08-21 13:29:22,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:29:22,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025156879] [2020-08-21 13:29:22,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:29:22,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:22,885 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-21 13:29:22,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:29:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:22,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:29:22,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025156879] [2020-08-21 13:29:22,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:29:22,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 13:29:22,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39439494] [2020-08-21 13:29:22,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 13:29:22,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:29:22,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 13:29:22,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:29:22,970 INFO L87 Difference]: Start difference. First operand 591 states and 870 transitions. Second operand 4 states. [2020-08-21 13:29:23,208 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-08-21 13:29:25,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:29:25,285 INFO L93 Difference]: Finished difference Result 1190 states and 1805 transitions. [2020-08-21 13:29:25,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 13:29:25,286 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-08-21 13:29:25,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:29:25,293 INFO L225 Difference]: With dead ends: 1190 [2020-08-21 13:29:25,294 INFO L226 Difference]: Without dead ends: 961 [2020-08-21 13:29:25,296 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 [2020-08-21 13:29:25,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2020-08-21 13:29:25,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 959. [2020-08-21 13:29:25,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 959 states. [2020-08-21 13:29:25,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1434 transitions. [2020-08-21 13:29:25,334 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1434 transitions. Word has length 146 [2020-08-21 13:29:25,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:29:25,335 INFO L479 AbstractCegarLoop]: Abstraction has 959 states and 1434 transitions. [2020-08-21 13:29:25,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 13:29:25,335 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1434 transitions. [2020-08-21 13:29:25,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-21 13:29:25,338 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:29:25,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:29:25,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 13:29:25,339 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:29:25,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:29:25,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1369993092, now seen corresponding path program 1 times [2020-08-21 13:29:25,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:29:25,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130904323] [2020-08-21 13:29:25,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:29:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:25,739 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-21 13:29:25,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:29:25,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:25,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:29:25,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130904323] [2020-08-21 13:29:25,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:29:25,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 13:29:25,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963509688] [2020-08-21 13:29:25,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 13:29:25,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:29:25,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 13:29:25,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:29:25,835 INFO L87 Difference]: Start difference. First operand 959 states and 1434 transitions. Second operand 4 states. [2020-08-21 13:29:26,229 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-08-21 13:29:28,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:29:28,393 INFO L93 Difference]: Finished difference Result 2090 states and 3210 transitions. [2020-08-21 13:29:28,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 13:29:28,395 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-08-21 13:29:28,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:29:28,407 INFO L225 Difference]: With dead ends: 2090 [2020-08-21 13:29:28,407 INFO L226 Difference]: Without dead ends: 1701 [2020-08-21 13:29:28,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 13:29:28,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2020-08-21 13:29:28,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1699. [2020-08-21 13:29:28,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1699 states. [2020-08-21 13:29:28,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2566 transitions. [2020-08-21 13:29:28,478 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2566 transitions. Word has length 146 [2020-08-21 13:29:28,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:29:28,478 INFO L479 AbstractCegarLoop]: Abstraction has 1699 states and 2566 transitions. [2020-08-21 13:29:28,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 13:29:28,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2566 transitions. [2020-08-21 13:29:28,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-21 13:29:28,482 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:29:28,482 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] [2020-08-21 13:29:28,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 13:29:28,483 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:29:28,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:29:28,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1370331716, now seen corresponding path program 1 times [2020-08-21 13:29:28,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:29:28,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272833558] [2020-08-21 13:29:28,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:29:28,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:29,012 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-21 13:29:29,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:29:29,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:29,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:29:29,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272833558] [2020-08-21 13:29:29,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:29:29,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 13:29:29,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341531649] [2020-08-21 13:29:29,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 13:29:29,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:29:29,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 13:29:29,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 13:29:29,097 INFO L87 Difference]: Start difference. First operand 1699 states and 2566 transitions. Second operand 5 states. [2020-08-21 13:29:32,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:29:32,565 INFO L93 Difference]: Finished difference Result 4967 states and 7485 transitions. [2020-08-21 13:29:32,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 13:29:32,566 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-08-21 13:29:32,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:29:32,583 INFO L225 Difference]: With dead ends: 4967 [2020-08-21 13:29:32,583 INFO L226 Difference]: Without dead ends: 3281 [2020-08-21 13:29:32,587 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 [2020-08-21 13:29:32,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2020-08-21 13:29:32,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 3235. [2020-08-21 13:29:32,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3235 states. [2020-08-21 13:29:32,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3235 states to 3235 states and 4851 transitions. [2020-08-21 13:29:32,715 INFO L78 Accepts]: Start accepts. Automaton has 3235 states and 4851 transitions. Word has length 146 [2020-08-21 13:29:32,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:29:32,715 INFO L479 AbstractCegarLoop]: Abstraction has 3235 states and 4851 transitions. [2020-08-21 13:29:32,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 13:29:32,716 INFO L276 IsEmpty]: Start isEmpty. Operand 3235 states and 4851 transitions. [2020-08-21 13:29:32,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-21 13:29:32,721 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:29:32,721 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] [2020-08-21 13:29:32,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 13:29:32,721 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:29:32,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:29:32,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1648495204, now seen corresponding path program 1 times [2020-08-21 13:29:32,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:29:32,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858812731] [2020-08-21 13:29:32,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:29:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:33,029 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-21 13:29:33,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:29:33,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:33,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:29:33,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858812731] [2020-08-21 13:29:33,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:29:33,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 13:29:33,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994507540] [2020-08-21 13:29:33,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 13:29:33,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:29:33,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 13:29:33,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:29:33,090 INFO L87 Difference]: Start difference. First operand 3235 states and 4851 transitions. Second operand 4 states. [2020-08-21 13:29:35,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:29:35,729 INFO L93 Difference]: Finished difference Result 9659 states and 14483 transitions. [2020-08-21 13:29:35,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 13:29:35,730 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2020-08-21 13:29:35,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:29:35,763 INFO L225 Difference]: With dead ends: 9659 [2020-08-21 13:29:35,763 INFO L226 Difference]: Without dead ends: 6456 [2020-08-21 13:29:35,771 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 [2020-08-21 13:29:35,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6456 states. [2020-08-21 13:29:36,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6456 to 3237. [2020-08-21 13:29:36,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3237 states. [2020-08-21 13:29:36,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3237 states to 3237 states and 4853 transitions. [2020-08-21 13:29:36,035 INFO L78 Accepts]: Start accepts. Automaton has 3237 states and 4853 transitions. Word has length 147 [2020-08-21 13:29:36,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:29:36,035 INFO L479 AbstractCegarLoop]: Abstraction has 3237 states and 4853 transitions. [2020-08-21 13:29:36,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 13:29:36,036 INFO L276 IsEmpty]: Start isEmpty. Operand 3237 states and 4853 transitions. [2020-08-21 13:29:36,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-21 13:29:36,041 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:29:36,041 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] [2020-08-21 13:29:36,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 13:29:36,041 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:29:36,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:29:36,042 INFO L82 PathProgramCache]: Analyzing trace with hash 921116989, now seen corresponding path program 1 times [2020-08-21 13:29:36,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:29:36,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155020818] [2020-08-21 13:29:36,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:29:36,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:36,395 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-21 13:29:36,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:29:36,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:36,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:29:36,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155020818] [2020-08-21 13:29:36,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:29:36,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 13:29:36,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762029024] [2020-08-21 13:29:36,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 13:29:36,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:29:36,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 13:29:36,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 13:29:36,448 INFO L87 Difference]: Start difference. First operand 3237 states and 4853 transitions. Second operand 5 states. [2020-08-21 13:29:39,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:29:39,438 INFO L93 Difference]: Finished difference Result 9441 states and 14115 transitions. [2020-08-21 13:29:39,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 13:29:39,438 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-08-21 13:29:39,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:29:39,467 INFO L225 Difference]: With dead ends: 9441 [2020-08-21 13:29:39,467 INFO L226 Difference]: Without dead ends: 6238 [2020-08-21 13:29:39,474 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 [2020-08-21 13:29:39,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6238 states. [2020-08-21 13:29:39,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6238 to 6192. [2020-08-21 13:29:39,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6192 states. [2020-08-21 13:29:39,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6192 states to 6192 states and 9193 transitions. [2020-08-21 13:29:39,866 INFO L78 Accepts]: Start accepts. Automaton has 6192 states and 9193 transitions. Word has length 148 [2020-08-21 13:29:39,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:29:39,866 INFO L479 AbstractCegarLoop]: Abstraction has 6192 states and 9193 transitions. [2020-08-21 13:29:39,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 13:29:39,866 INFO L276 IsEmpty]: Start isEmpty. Operand 6192 states and 9193 transitions. [2020-08-21 13:29:39,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-21 13:29:39,878 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:29:39,878 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] [2020-08-21 13:29:39,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 13:29:39,879 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:29:39,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:29:39,879 INFO L82 PathProgramCache]: Analyzing trace with hash 239618117, now seen corresponding path program 1 times [2020-08-21 13:29:39,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:29:39,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011185231] [2020-08-21 13:29:39,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:29:39,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:40,158 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-21 13:29:40,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:29:40,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:40,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:29:40,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011185231] [2020-08-21 13:29:40,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:29:40,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 13:29:40,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276901400] [2020-08-21 13:29:40,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 13:29:40,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:29:40,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 13:29:40,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:29:40,195 INFO L87 Difference]: Start difference. First operand 6192 states and 9193 transitions. Second operand 4 states. [2020-08-21 13:29:43,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:29:43,504 INFO L93 Difference]: Finished difference Result 18492 states and 27451 transitions. [2020-08-21 13:29:43,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 13:29:43,505 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-08-21 13:29:43,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:29:43,551 INFO L225 Difference]: With dead ends: 18492 [2020-08-21 13:29:43,551 INFO L226 Difference]: Without dead ends: 12348 [2020-08-21 13:29:43,565 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 [2020-08-21 13:29:43,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12348 states. [2020-08-21 13:29:43,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12348 to 6196. [2020-08-21 13:29:43,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6196 states. [2020-08-21 13:29:43,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 9197 transitions. [2020-08-21 13:29:43,981 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 9197 transitions. Word has length 149 [2020-08-21 13:29:43,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:29:43,981 INFO L479 AbstractCegarLoop]: Abstraction has 6196 states and 9197 transitions. [2020-08-21 13:29:43,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 13:29:43,982 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 9197 transitions. [2020-08-21 13:29:43,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-21 13:29:43,992 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:29:43,992 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] [2020-08-21 13:29:43,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 13:29:43,993 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:29:43,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:29:43,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1772203169, now seen corresponding path program 1 times [2020-08-21 13:29:43,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:29:43,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1701345500] [2020-08-21 13:29:43,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:29:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:44,317 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-21 13:29:44,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:29:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:44,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:29:44,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1701345500] [2020-08-21 13:29:44,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:29:44,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 13:29:44,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323661722] [2020-08-21 13:29:44,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 13:29:44,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:29:44,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 13:29:44,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:29:44,368 INFO L87 Difference]: Start difference. First operand 6196 states and 9197 transitions. Second operand 4 states. [2020-08-21 13:29:47,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:29:47,810 INFO L93 Difference]: Finished difference Result 16495 states and 24448 transitions. [2020-08-21 13:29:47,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 13:29:47,811 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-08-21 13:29:47,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:29:47,835 INFO L225 Difference]: With dead ends: 16495 [2020-08-21 13:29:47,835 INFO L226 Difference]: Without dead ends: 10615 [2020-08-21 13:29:47,848 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 [2020-08-21 13:29:47,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10615 states. [2020-08-21 13:29:48,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10615 to 10569. [2020-08-21 13:29:48,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10569 states. [2020-08-21 13:29:48,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10569 states to 10569 states and 15484 transitions. [2020-08-21 13:29:48,308 INFO L78 Accepts]: Start accepts. Automaton has 10569 states and 15484 transitions. Word has length 150 [2020-08-21 13:29:48,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:29:48,308 INFO L479 AbstractCegarLoop]: Abstraction has 10569 states and 15484 transitions. [2020-08-21 13:29:48,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 13:29:48,309 INFO L276 IsEmpty]: Start isEmpty. Operand 10569 states and 15484 transitions. [2020-08-21 13:29:48,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-21 13:29:48,322 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:29:48,322 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] [2020-08-21 13:29:48,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 13:29:48,323 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:29:48,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:29:48,323 INFO L82 PathProgramCache]: Analyzing trace with hash 251552574, now seen corresponding path program 1 times [2020-08-21 13:29:48,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:29:48,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423706938] [2020-08-21 13:29:48,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:29:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:48,684 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-21 13:29:48,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:29:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:48,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:29:48,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423706938] [2020-08-21 13:29:48,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:29:48,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 13:29:48,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870955971] [2020-08-21 13:29:48,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 13:29:48,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:29:48,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 13:29:48,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 13:29:48,727 INFO L87 Difference]: Start difference. First operand 10569 states and 15484 transitions. Second operand 5 states. [2020-08-21 13:29:51,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:29:51,197 INFO L93 Difference]: Finished difference Result 21564 states and 31467 transitions. [2020-08-21 13:29:51,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 13:29:51,198 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-08-21 13:29:51,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:29:51,220 INFO L225 Difference]: With dead ends: 21564 [2020-08-21 13:29:51,221 INFO L226 Difference]: Without dead ends: 10851 [2020-08-21 13:29:51,237 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 [2020-08-21 13:29:51,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10851 states. [2020-08-21 13:29:51,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10851 to 10805. [2020-08-21 13:29:51,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10805 states. [2020-08-21 13:29:51,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10805 states to 10805 states and 15660 transitions. [2020-08-21 13:29:51,685 INFO L78 Accepts]: Start accepts. Automaton has 10805 states and 15660 transitions. Word has length 150 [2020-08-21 13:29:51,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:29:51,685 INFO L479 AbstractCegarLoop]: Abstraction has 10805 states and 15660 transitions. [2020-08-21 13:29:51,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 13:29:51,686 INFO L276 IsEmpty]: Start isEmpty. Operand 10805 states and 15660 transitions. [2020-08-21 13:29:51,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-21 13:29:51,698 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:29:51,698 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] [2020-08-21 13:29:51,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 13:29:51,698 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:29:51,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:29:51,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1535594178, now seen corresponding path program 1 times [2020-08-21 13:29:51,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:29:51,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691020600] [2020-08-21 13:29:51,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:29:51,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:52,039 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-21 13:29:52,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:29:52,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:52,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:29:52,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691020600] [2020-08-21 13:29:52,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:29:52,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 13:29:52,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414306768] [2020-08-21 13:29:52,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 13:29:52,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:29:52,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 13:29:52,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 13:29:52,101 INFO L87 Difference]: Start difference. First operand 10805 states and 15660 transitions. Second operand 5 states. [2020-08-21 13:29:56,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:29:56,026 INFO L93 Difference]: Finished difference Result 15230 states and 22013 transitions. [2020-08-21 13:29:56,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 13:29:56,027 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-08-21 13:29:56,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:29:56,048 INFO L225 Difference]: With dead ends: 15230 [2020-08-21 13:29:56,048 INFO L226 Difference]: Without dead ends: 10851 [2020-08-21 13:29:56,056 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 [2020-08-21 13:29:56,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10851 states. [2020-08-21 13:29:56,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10851 to 10569. [2020-08-21 13:29:56,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10569 states. [2020-08-21 13:29:56,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10569 states to 10569 states and 15362 transitions. [2020-08-21 13:29:56,482 INFO L78 Accepts]: Start accepts. Automaton has 10569 states and 15362 transitions. Word has length 150 [2020-08-21 13:29:56,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:29:56,482 INFO L479 AbstractCegarLoop]: Abstraction has 10569 states and 15362 transitions. [2020-08-21 13:29:56,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 13:29:56,483 INFO L276 IsEmpty]: Start isEmpty. Operand 10569 states and 15362 transitions. [2020-08-21 13:29:56,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-21 13:29:56,494 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:29:56,494 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] [2020-08-21 13:29:56,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 13:29:56,494 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:29:56,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:29:56,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1232731994, now seen corresponding path program 1 times [2020-08-21 13:29:56,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:29:56,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081960678] [2020-08-21 13:29:56,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:29:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:56,784 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-21 13:29:56,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:29:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:29:56,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:29:56,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081960678] [2020-08-21 13:29:56,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:29:56,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 13:29:56,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295060196] [2020-08-21 13:29:56,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 13:29:56,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:29:56,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 13:29:56,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:29:56,830 INFO L87 Difference]: Start difference. First operand 10569 states and 15362 transitions. Second operand 4 states. [2020-08-21 13:30:00,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:30:00,634 INFO L93 Difference]: Finished difference Result 25409 states and 36872 transitions. [2020-08-21 13:30:00,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 13:30:00,635 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-08-21 13:30:00,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:30:00,674 INFO L225 Difference]: With dead ends: 25409 [2020-08-21 13:30:00,674 INFO L226 Difference]: Without dead ends: 21030 [2020-08-21 13:30:00,688 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 [2020-08-21 13:30:00,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21030 states. [2020-08-21 13:30:01,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21030 to 10577. [2020-08-21 13:30:01,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10577 states. [2020-08-21 13:30:01,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10577 states to 10577 states and 15370 transitions. [2020-08-21 13:30:01,277 INFO L78 Accepts]: Start accepts. Automaton has 10577 states and 15370 transitions. Word has length 151 [2020-08-21 13:30:01,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:30:01,277 INFO L479 AbstractCegarLoop]: Abstraction has 10577 states and 15370 transitions. [2020-08-21 13:30:01,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 13:30:01,277 INFO L276 IsEmpty]: Start isEmpty. Operand 10577 states and 15370 transitions. [2020-08-21 13:30:01,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-21 13:30:01,286 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:30:01,286 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] [2020-08-21 13:30:01,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 13:30:01,287 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:30:01,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:30:01,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1234425885, now seen corresponding path program 1 times [2020-08-21 13:30:01,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:30:01,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122872839] [2020-08-21 13:30:01,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:30:01,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:30:01,651 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-21 13:30:01,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:30:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:30:01,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:30:01,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [122872839] [2020-08-21 13:30:01,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:30:01,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 13:30:01,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477151630] [2020-08-21 13:30:01,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 13:30:01,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:30:01,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 13:30:01,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 13:30:01,722 INFO L87 Difference]: Start difference. First operand 10577 states and 15370 transitions. Second operand 5 states. [2020-08-21 13:30:04,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:30:04,980 INFO L93 Difference]: Finished difference Result 30843 states and 44647 transitions. [2020-08-21 13:30:04,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 13:30:04,981 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-08-21 13:30:04,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:30:05,010 INFO L225 Difference]: With dead ends: 30843 [2020-08-21 13:30:05,010 INFO L226 Difference]: Without dead ends: 20313 [2020-08-21 13:30:05,030 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 [2020-08-21 13:30:05,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20313 states. [2020-08-21 13:30:06,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20313 to 20283. [2020-08-21 13:30:06,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20283 states. [2020-08-21 13:30:06,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20283 states to 20283 states and 29041 transitions. [2020-08-21 13:30:06,251 INFO L78 Accepts]: Start accepts. Automaton has 20283 states and 29041 transitions. Word has length 152 [2020-08-21 13:30:06,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:30:06,251 INFO L479 AbstractCegarLoop]: Abstraction has 20283 states and 29041 transitions. [2020-08-21 13:30:06,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 13:30:06,251 INFO L276 IsEmpty]: Start isEmpty. Operand 20283 states and 29041 transitions. [2020-08-21 13:30:06,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-21 13:30:06,264 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:30:06,265 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] [2020-08-21 13:30:06,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 13:30:06,265 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:30:06,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:30:06,265 INFO L82 PathProgramCache]: Analyzing trace with hash -695536157, now seen corresponding path program 1 times [2020-08-21 13:30:06,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:30:06,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726392721] [2020-08-21 13:30:06,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:30:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:30:06,600 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-21 13:30:06,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:30:06,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:30:06,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:30:06,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726392721] [2020-08-21 13:30:06,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:30:06,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 13:30:06,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147191497] [2020-08-21 13:30:06,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 13:30:06,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:30:06,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 13:30:06,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 13:30:06,651 INFO L87 Difference]: Start difference. First operand 20283 states and 29041 transitions. Second operand 5 states. [2020-08-21 13:30:11,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:30:11,053 INFO L93 Difference]: Finished difference Result 54646 states and 77842 transitions. [2020-08-21 13:30:11,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 13:30:11,054 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-08-21 13:30:11,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:30:11,095 INFO L225 Difference]: With dead ends: 54646 [2020-08-21 13:30:11,096 INFO L226 Difference]: Without dead ends: 34484 [2020-08-21 13:30:11,122 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 [2020-08-21 13:30:11,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34484 states.