/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 -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 0.1.25-5644d1e-m [2020-08-18 16:26:52,415 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:26:52,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:26:52,443 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:26:52,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:26:52,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:26:52,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:26:52,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:26:52,449 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:26:52,450 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:26:52,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:26:52,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:26:52,453 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:26:52,454 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:26:52,455 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:26:52,456 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:26:52,457 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:26:52,458 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:26:52,460 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:26:52,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:26:52,464 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:26:52,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:26:52,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:26:52,467 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:26:52,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 16:26:52,478 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:26:52,479 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:26:52,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:26:52,480 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 [2020-08-18 16:26:52,520 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:26:52,523 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:26:52,524 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:26:52,524 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:26:52,524 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:26:52,528 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:26:52,528 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:26:52,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:26:52,528 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:26:52,529 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:26:52,529 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:26:52,529 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:26:52,529 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:26:52,529 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:26:52,530 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:26:52,530 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:26:52,530 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:26:52,530 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:26:52,530 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:26:52,531 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:26:52,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:26:52,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:26:52,531 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:26:52,531 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:26:52,531 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:26:52,532 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:26:52,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:26:52,532 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:26:52,532 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:26:52,532 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 [2020-08-18 16:26:52,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:26:52,879 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:26:52,883 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:26:52,884 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:26:52,885 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:26:52,886 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-08-18 16:26:52,945 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/539144159/fa90f3e4f54745e6a93f9226cab162d5/FLAG848a6a80b [2020-08-18 16:26:53,521 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:26:53,521 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-08-18 16:26:53,543 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/539144159/fa90f3e4f54745e6a93f9226cab162d5/FLAG848a6a80b [2020-08-18 16:26:53,801 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/539144159/fa90f3e4f54745e6a93f9226cab162d5 [2020-08-18 16:26:53,812 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:26:53,814 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:26:53,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:26:53,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:26:53,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:26:53,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:26:53" (1/1) ... [2020-08-18 16:26:53,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@243026c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:26:53, skipping insertion in model container [2020-08-18 16:26:53,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:26:53" (1/1) ... [2020-08-18 16:26:53,831 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:26:53,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:26:54,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:26:54,628 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:26:55,068 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:26:55,096 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:26:55,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:26:55 WrapperNode [2020-08-18 16:26:55,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:26:55,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:26:55,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:26:55,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:26:55,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:26:55" (1/1) ... [2020-08-18 16:26:55,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:26:55" (1/1) ... [2020-08-18 16:26:55,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:26:55" (1/1) ... [2020-08-18 16:26:55,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:26:55" (1/1) ... [2020-08-18 16:26:55,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:26:55" (1/1) ... [2020-08-18 16:26:55,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:26:55" (1/1) ... [2020-08-18 16:26:55,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:26:55" (1/1) ... [2020-08-18 16:26:55,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:26:55,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:26:55,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:26:55,288 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:26:55,289 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:26:55" (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 [2020-08-18 16:26:55,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:26:55,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:26:55,402 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 16:26:55,403 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:26:55,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:26:55,404 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-18 16:26:55,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-18 16:26:55,406 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-18 16:26:55,406 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 16:26:55,406 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 16:26:55,406 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-18 16:26:55,408 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-18 16:26:55,408 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-08-18 16:26:55,408 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-08-18 16:26:55,409 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-08-18 16:26:55,410 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-18 16:26:55,410 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-18 16:26:55,411 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:26:55,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:26:55,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:26:57,278 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:26:57,279 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 16:26:57,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:26:57 BoogieIcfgContainer [2020-08-18 16:26:57,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:26:57,293 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:26:57,293 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:26:57,297 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:26:57,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:26:53" (1/3) ... [2020-08-18 16:26:57,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5597e651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:26:57, skipping insertion in model container [2020-08-18 16:26:57,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:26:55" (2/3) ... [2020-08-18 16:26:57,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5597e651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:26:57, skipping insertion in model container [2020-08-18 16:26:57,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:26:57" (3/3) ... [2020-08-18 16:26:57,301 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-08-18 16:26:57,314 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:26:57,324 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-08-18 16:26:57,342 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-08-18 16:26:57,379 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:26:57,379 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:26:57,379 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:26:57,379 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:26:57,380 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:26:57,380 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:26:57,380 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:26:57,380 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:26:57,412 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states. [2020-08-18 16:26:57,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-18 16:26:57,471 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:26:57,473 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] [2020-08-18 16:26:57,474 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:26:57,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:26:57,483 INFO L82 PathProgramCache]: Analyzing trace with hash 604537660, now seen corresponding path program 1 times [2020-08-18 16:26:57,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:26:57,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162794439] [2020-08-18 16:26:57,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:26:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:26:58,543 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 16:26:58,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:26:58,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:26:58,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:26:58,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162794439] [2020-08-18 16:26:58,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:26:58,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:26:58,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159927125] [2020-08-18 16:26:58,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:26:58,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:26:58,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:26:58,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:26:58,686 INFO L87 Difference]: Start difference. First operand 412 states. Second operand 4 states. [2020-08-18 16:26:59,024 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-08-18 16:27:01,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:27:01,698 INFO L93 Difference]: Finished difference Result 754 states and 1320 transitions. [2020-08-18 16:27:01,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:27:01,700 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-08-18 16:27:01,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:27:01,722 INFO L225 Difference]: With dead ends: 754 [2020-08-18 16:27:01,722 INFO L226 Difference]: Without dead ends: 593 [2020-08-18 16:27:01,727 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 [2020-08-18 16:27:01,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2020-08-18 16:27:01,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 591. [2020-08-18 16:27:01,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-08-18 16:27:01,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 870 transitions. [2020-08-18 16:27:01,822 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 870 transitions. Word has length 146 [2020-08-18 16:27:01,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:27:01,823 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 870 transitions. [2020-08-18 16:27:01,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:27:01,824 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 870 transitions. [2020-08-18 16:27:01,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-18 16:27:01,828 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:27:01,828 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] [2020-08-18 16:27:01,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:27:01,829 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:27:01,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:27:01,829 INFO L82 PathProgramCache]: Analyzing trace with hash 694944860, now seen corresponding path program 1 times [2020-08-18 16:27:01,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:27:01,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401400491] [2020-08-18 16:27:01,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:27:01,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:02,385 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 16:27:02,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:27:02,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:02,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:27:02,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401400491] [2020-08-18 16:27:02,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:27:02,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:27:02,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621727100] [2020-08-18 16:27:02,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:27:02,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:27:02,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:27:02,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:27:02,450 INFO L87 Difference]: Start difference. First operand 591 states and 870 transitions. Second operand 4 states. [2020-08-18 16:27:02,748 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-08-18 16:27:04,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:27:04,849 INFO L93 Difference]: Finished difference Result 1190 states and 1805 transitions. [2020-08-18 16:27:04,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:27:04,850 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-08-18 16:27:04,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:27:04,863 INFO L225 Difference]: With dead ends: 1190 [2020-08-18 16:27:04,863 INFO L226 Difference]: Without dead ends: 961 [2020-08-18 16:27:04,870 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 [2020-08-18 16:27:04,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2020-08-18 16:27:04,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 959. [2020-08-18 16:27:04,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 959 states. [2020-08-18 16:27:04,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1434 transitions. [2020-08-18 16:27:04,946 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1434 transitions. Word has length 146 [2020-08-18 16:27:04,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:27:04,948 INFO L479 AbstractCegarLoop]: Abstraction has 959 states and 1434 transitions. [2020-08-18 16:27:04,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:27:04,948 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1434 transitions. [2020-08-18 16:27:04,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-18 16:27:04,953 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:27:04,953 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] [2020-08-18 16:27:04,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:27:04,954 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:27:04,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:27:04,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1369993092, now seen corresponding path program 1 times [2020-08-18 16:27:04,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:27:04,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170302260] [2020-08-18 16:27:04,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:27:05,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:05,420 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 16:27:05,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:27:05,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:05,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:27:05,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170302260] [2020-08-18 16:27:05,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:27:05,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:27:05,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338337610] [2020-08-18 16:27:05,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:27:05,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:27:05,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:27:05,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:27:05,480 INFO L87 Difference]: Start difference. First operand 959 states and 1434 transitions. Second operand 4 states. [2020-08-18 16:27:05,739 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-08-18 16:27:08,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:27:08,076 INFO L93 Difference]: Finished difference Result 2090 states and 3210 transitions. [2020-08-18 16:27:08,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:27:08,078 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-08-18 16:27:08,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:27:08,094 INFO L225 Difference]: With dead ends: 2090 [2020-08-18 16:27:08,095 INFO L226 Difference]: Without dead ends: 1701 [2020-08-18 16:27:08,098 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 [2020-08-18 16:27:08,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2020-08-18 16:27:08,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1699. [2020-08-18 16:27:08,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1699 states. [2020-08-18 16:27:08,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2566 transitions. [2020-08-18 16:27:08,203 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2566 transitions. Word has length 146 [2020-08-18 16:27:08,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:27:08,204 INFO L479 AbstractCegarLoop]: Abstraction has 1699 states and 2566 transitions. [2020-08-18 16:27:08,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:27:08,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2566 transitions. [2020-08-18 16:27:08,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-18 16:27:08,214 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:27:08,214 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] [2020-08-18 16:27:08,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:27:08,216 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:27:08,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:27:08,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1370331716, now seen corresponding path program 1 times [2020-08-18 16:27:08,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:27:08,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109138840] [2020-08-18 16:27:08,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:27:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:08,834 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 16:27:08,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:27:08,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:08,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:27:08,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109138840] [2020-08-18 16:27:08,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:27:08,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 16:27:08,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732582345] [2020-08-18 16:27:08,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 16:27:08,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:27:08,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 16:27:08,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:27:08,884 INFO L87 Difference]: Start difference. First operand 1699 states and 2566 transitions. Second operand 5 states. [2020-08-18 16:27:12,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:27:12,778 INFO L93 Difference]: Finished difference Result 4967 states and 7485 transitions. [2020-08-18 16:27:12,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:27:12,779 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-08-18 16:27:12,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:27:12,795 INFO L225 Difference]: With dead ends: 4967 [2020-08-18 16:27:12,796 INFO L226 Difference]: Without dead ends: 3281 [2020-08-18 16:27:12,800 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 [2020-08-18 16:27:12,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2020-08-18 16:27:12,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 3235. [2020-08-18 16:27:12,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3235 states. [2020-08-18 16:27:12,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3235 states to 3235 states and 4851 transitions. [2020-08-18 16:27:12,943 INFO L78 Accepts]: Start accepts. Automaton has 3235 states and 4851 transitions. Word has length 146 [2020-08-18 16:27:12,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:27:12,944 INFO L479 AbstractCegarLoop]: Abstraction has 3235 states and 4851 transitions. [2020-08-18 16:27:12,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 16:27:12,944 INFO L276 IsEmpty]: Start isEmpty. Operand 3235 states and 4851 transitions. [2020-08-18 16:27:12,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-18 16:27:12,950 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:27:12,950 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] [2020-08-18 16:27:12,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:27:12,953 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:27:12,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:27:12,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1648495204, now seen corresponding path program 1 times [2020-08-18 16:27:12,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:27:12,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736455351] [2020-08-18 16:27:12,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:27:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:13,323 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 16:27:13,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:27:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:13,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:27:13,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736455351] [2020-08-18 16:27:13,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:27:13,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:27:13,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285844190] [2020-08-18 16:27:13,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:27:13,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:27:13,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:27:13,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:27:13,377 INFO L87 Difference]: Start difference. First operand 3235 states and 4851 transitions. Second operand 4 states. [2020-08-18 16:27:16,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:27:16,134 INFO L93 Difference]: Finished difference Result 9659 states and 14483 transitions. [2020-08-18 16:27:16,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 16:27:16,135 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2020-08-18 16:27:16,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:27:16,165 INFO L225 Difference]: With dead ends: 9659 [2020-08-18 16:27:16,165 INFO L226 Difference]: Without dead ends: 6456 [2020-08-18 16:27:16,174 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 [2020-08-18 16:27:16,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6456 states. [2020-08-18 16:27:16,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6456 to 3237. [2020-08-18 16:27:16,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3237 states. [2020-08-18 16:27:16,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3237 states to 3237 states and 4853 transitions. [2020-08-18 16:27:16,360 INFO L78 Accepts]: Start accepts. Automaton has 3237 states and 4853 transitions. Word has length 147 [2020-08-18 16:27:16,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:27:16,360 INFO L479 AbstractCegarLoop]: Abstraction has 3237 states and 4853 transitions. [2020-08-18 16:27:16,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:27:16,361 INFO L276 IsEmpty]: Start isEmpty. Operand 3237 states and 4853 transitions. [2020-08-18 16:27:16,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-18 16:27:16,375 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:27:16,375 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] [2020-08-18 16:27:16,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:27:16,376 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:27:16,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:27:16,376 INFO L82 PathProgramCache]: Analyzing trace with hash 921116989, now seen corresponding path program 1 times [2020-08-18 16:27:16,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:27:16,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960735165] [2020-08-18 16:27:16,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:27:16,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:16,812 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 16:27:16,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:27:16,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:16,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:27:16,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960735165] [2020-08-18 16:27:16,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:27:16,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 16:27:16,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829050007] [2020-08-18 16:27:16,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 16:27:16,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:27:16,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 16:27:16,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:27:16,876 INFO L87 Difference]: Start difference. First operand 3237 states and 4853 transitions. Second operand 5 states. [2020-08-18 16:27:19,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:27:19,967 INFO L93 Difference]: Finished difference Result 9441 states and 14115 transitions. [2020-08-18 16:27:19,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:27:19,967 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-08-18 16:27:19,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:27:19,994 INFO L225 Difference]: With dead ends: 9441 [2020-08-18 16:27:19,994 INFO L226 Difference]: Without dead ends: 6238 [2020-08-18 16:27:20,003 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 [2020-08-18 16:27:20,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6238 states. [2020-08-18 16:27:20,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6238 to 6192. [2020-08-18 16:27:20,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6192 states. [2020-08-18 16:27:20,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6192 states to 6192 states and 9193 transitions. [2020-08-18 16:27:20,262 INFO L78 Accepts]: Start accepts. Automaton has 6192 states and 9193 transitions. Word has length 148 [2020-08-18 16:27:20,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:27:20,263 INFO L479 AbstractCegarLoop]: Abstraction has 6192 states and 9193 transitions. [2020-08-18 16:27:20,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 16:27:20,263 INFO L276 IsEmpty]: Start isEmpty. Operand 6192 states and 9193 transitions. [2020-08-18 16:27:20,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-18 16:27:20,272 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:27:20,272 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] [2020-08-18 16:27:20,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 16:27:20,272 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:27:20,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:27:20,273 INFO L82 PathProgramCache]: Analyzing trace with hash 239618117, now seen corresponding path program 1 times [2020-08-18 16:27:20,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:27:20,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669545197] [2020-08-18 16:27:20,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:27:20,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:20,550 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 16:27:20,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:27:20,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:20,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:27:20,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669545197] [2020-08-18 16:27:20,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:27:20,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:27:20,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724913696] [2020-08-18 16:27:20,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:27:20,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:27:20,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:27:20,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:27:20,590 INFO L87 Difference]: Start difference. First operand 6192 states and 9193 transitions. Second operand 4 states. [2020-08-18 16:27:23,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:27:23,954 INFO L93 Difference]: Finished difference Result 18492 states and 27451 transitions. [2020-08-18 16:27:23,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 16:27:23,955 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-08-18 16:27:23,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:27:23,999 INFO L225 Difference]: With dead ends: 18492 [2020-08-18 16:27:23,999 INFO L226 Difference]: Without dead ends: 12348 [2020-08-18 16:27:24,012 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 [2020-08-18 16:27:24,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12348 states. [2020-08-18 16:27:24,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12348 to 6196. [2020-08-18 16:27:24,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6196 states. [2020-08-18 16:27:24,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6196 states to 6196 states and 9197 transitions. [2020-08-18 16:27:24,296 INFO L78 Accepts]: Start accepts. Automaton has 6196 states and 9197 transitions. Word has length 149 [2020-08-18 16:27:24,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:27:24,296 INFO L479 AbstractCegarLoop]: Abstraction has 6196 states and 9197 transitions. [2020-08-18 16:27:24,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:27:24,297 INFO L276 IsEmpty]: Start isEmpty. Operand 6196 states and 9197 transitions. [2020-08-18 16:27:24,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 16:27:24,305 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:27:24,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:27:24,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 16:27:24,306 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:27:24,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:27:24,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1772203169, now seen corresponding path program 1 times [2020-08-18 16:27:24,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:27:24,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256706918] [2020-08-18 16:27:24,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:27:24,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:24,649 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 16:27:24,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:27:24,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:24,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:27:24,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256706918] [2020-08-18 16:27:24,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:27:24,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:27:24,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832378649] [2020-08-18 16:27:24,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:27:24,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:27:24,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:27:24,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:27:24,722 INFO L87 Difference]: Start difference. First operand 6196 states and 9197 transitions. Second operand 4 states. [2020-08-18 16:27:28,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:27:28,102 INFO L93 Difference]: Finished difference Result 16495 states and 24448 transitions. [2020-08-18 16:27:28,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 16:27:28,104 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-08-18 16:27:28,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:27:28,126 INFO L225 Difference]: With dead ends: 16495 [2020-08-18 16:27:28,127 INFO L226 Difference]: Without dead ends: 10615 [2020-08-18 16:27:28,138 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 [2020-08-18 16:27:28,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10615 states. [2020-08-18 16:27:28,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10615 to 10569. [2020-08-18 16:27:28,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10569 states. [2020-08-18 16:27:28,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10569 states to 10569 states and 15484 transitions. [2020-08-18 16:27:28,568 INFO L78 Accepts]: Start accepts. Automaton has 10569 states and 15484 transitions. Word has length 150 [2020-08-18 16:27:28,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:27:28,569 INFO L479 AbstractCegarLoop]: Abstraction has 10569 states and 15484 transitions. [2020-08-18 16:27:28,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:27:28,569 INFO L276 IsEmpty]: Start isEmpty. Operand 10569 states and 15484 transitions. [2020-08-18 16:27:28,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 16:27:28,580 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:27:28,580 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] [2020-08-18 16:27:28,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 16:27:28,581 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:27:28,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:27:28,581 INFO L82 PathProgramCache]: Analyzing trace with hash 251552574, now seen corresponding path program 1 times [2020-08-18 16:27:28,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:27:28,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2132656737] [2020-08-18 16:27:28,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:27:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:28,907 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 16:27:28,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:27:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:28,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:27:28,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2132656737] [2020-08-18 16:27:28,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:27:28,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 16:27:28,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977930768] [2020-08-18 16:27:28,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 16:27:28,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:27:28,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 16:27:28,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:27:28,944 INFO L87 Difference]: Start difference. First operand 10569 states and 15484 transitions. Second operand 5 states. [2020-08-18 16:27:31,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:27:31,502 INFO L93 Difference]: Finished difference Result 21564 states and 31467 transitions. [2020-08-18 16:27:31,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:27:31,503 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-08-18 16:27:31,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:27:31,525 INFO L225 Difference]: With dead ends: 21564 [2020-08-18 16:27:31,526 INFO L226 Difference]: Without dead ends: 10851 [2020-08-18 16:27:31,545 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 [2020-08-18 16:27:31,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10851 states. [2020-08-18 16:27:32,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10851 to 10805. [2020-08-18 16:27:32,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10805 states. [2020-08-18 16:27:32,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10805 states to 10805 states and 15660 transitions. [2020-08-18 16:27:32,138 INFO L78 Accepts]: Start accepts. Automaton has 10805 states and 15660 transitions. Word has length 150 [2020-08-18 16:27:32,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:27:32,138 INFO L479 AbstractCegarLoop]: Abstraction has 10805 states and 15660 transitions. [2020-08-18 16:27:32,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 16:27:32,138 INFO L276 IsEmpty]: Start isEmpty. Operand 10805 states and 15660 transitions. [2020-08-18 16:27:32,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 16:27:32,148 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:27:32,149 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] [2020-08-18 16:27:32,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 16:27:32,149 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:27:32,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:27:32,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1535594178, now seen corresponding path program 1 times [2020-08-18 16:27:32,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:27:32,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248997492] [2020-08-18 16:27:32,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:27:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:32,516 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 16:27:32,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:27:32,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:32,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:27:32,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248997492] [2020-08-18 16:27:32,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:27:32,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 16:27:32,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065982177] [2020-08-18 16:27:32,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 16:27:32,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:27:32,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 16:27:32,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:27:32,565 INFO L87 Difference]: Start difference. First operand 10805 states and 15660 transitions. Second operand 5 states. [2020-08-18 16:27:36,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:27:36,333 INFO L93 Difference]: Finished difference Result 15230 states and 22013 transitions. [2020-08-18 16:27:36,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:27:36,334 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-08-18 16:27:36,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:27:36,348 INFO L225 Difference]: With dead ends: 15230 [2020-08-18 16:27:36,348 INFO L226 Difference]: Without dead ends: 10851 [2020-08-18 16:27:36,357 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 [2020-08-18 16:27:36,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10851 states. [2020-08-18 16:27:36,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10851 to 10569. [2020-08-18 16:27:36,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10569 states. [2020-08-18 16:27:36,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10569 states to 10569 states and 15362 transitions. [2020-08-18 16:27:36,790 INFO L78 Accepts]: Start accepts. Automaton has 10569 states and 15362 transitions. Word has length 150 [2020-08-18 16:27:36,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:27:36,790 INFO L479 AbstractCegarLoop]: Abstraction has 10569 states and 15362 transitions. [2020-08-18 16:27:36,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 16:27:36,790 INFO L276 IsEmpty]: Start isEmpty. Operand 10569 states and 15362 transitions. [2020-08-18 16:27:36,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-18 16:27:36,798 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:27:36,798 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] [2020-08-18 16:27:36,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 16:27:36,799 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:27:36,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:27:36,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1232731994, now seen corresponding path program 1 times [2020-08-18 16:27:36,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:27:36,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445986909] [2020-08-18 16:27:36,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:27:36,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:37,158 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 16:27:37,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:27:37,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:37,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:27:37,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445986909] [2020-08-18 16:27:37,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:27:37,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:27:37,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059122237] [2020-08-18 16:27:37,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:27:37,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:27:37,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:27:37,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:27:37,213 INFO L87 Difference]: Start difference. First operand 10569 states and 15362 transitions. Second operand 4 states. [2020-08-18 16:27:41,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:27:41,163 INFO L93 Difference]: Finished difference Result 25409 states and 36872 transitions. [2020-08-18 16:27:41,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 16:27:41,164 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-08-18 16:27:41,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:27:41,190 INFO L225 Difference]: With dead ends: 25409 [2020-08-18 16:27:41,190 INFO L226 Difference]: Without dead ends: 21030 [2020-08-18 16:27:41,202 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 [2020-08-18 16:27:41,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21030 states. [2020-08-18 16:27:41,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21030 to 10577. [2020-08-18 16:27:41,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10577 states. [2020-08-18 16:27:41,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10577 states to 10577 states and 15370 transitions. [2020-08-18 16:27:41,736 INFO L78 Accepts]: Start accepts. Automaton has 10577 states and 15370 transitions. Word has length 151 [2020-08-18 16:27:41,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:27:41,737 INFO L479 AbstractCegarLoop]: Abstraction has 10577 states and 15370 transitions. [2020-08-18 16:27:41,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:27:41,737 INFO L276 IsEmpty]: Start isEmpty. Operand 10577 states and 15370 transitions. [2020-08-18 16:27:41,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-18 16:27:41,744 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:27:41,744 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] [2020-08-18 16:27:41,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 16:27:41,744 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:27:41,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:27:41,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1234425885, now seen corresponding path program 1 times [2020-08-18 16:27:41,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:27:41,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61044195] [2020-08-18 16:27:41,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:27:41,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:42,252 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 16:27:42,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:27:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:42,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:27:42,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61044195] [2020-08-18 16:27:42,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:27:42,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 16:27:42,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352483277] [2020-08-18 16:27:42,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 16:27:42,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:27:42,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 16:27:42,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:27:42,327 INFO L87 Difference]: Start difference. First operand 10577 states and 15370 transitions. Second operand 5 states. [2020-08-18 16:27:45,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:27:45,779 INFO L93 Difference]: Finished difference Result 30843 states and 44647 transitions. [2020-08-18 16:27:45,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:27:45,779 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-08-18 16:27:45,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:27:45,806 INFO L225 Difference]: With dead ends: 30843 [2020-08-18 16:27:45,806 INFO L226 Difference]: Without dead ends: 20313 [2020-08-18 16:27:45,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 16:27:45,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20313 states. [2020-08-18 16:27:46,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20313 to 20283. [2020-08-18 16:27:46,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20283 states. [2020-08-18 16:27:46,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20283 states to 20283 states and 29041 transitions. [2020-08-18 16:27:46,571 INFO L78 Accepts]: Start accepts. Automaton has 20283 states and 29041 transitions. Word has length 152 [2020-08-18 16:27:46,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:27:46,571 INFO L479 AbstractCegarLoop]: Abstraction has 20283 states and 29041 transitions. [2020-08-18 16:27:46,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 16:27:46,572 INFO L276 IsEmpty]: Start isEmpty. Operand 20283 states and 29041 transitions. [2020-08-18 16:27:46,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-18 16:27:46,587 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:27:46,587 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] [2020-08-18 16:27:46,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 16:27:46,587 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:27:46,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:27:46,588 INFO L82 PathProgramCache]: Analyzing trace with hash -695536157, now seen corresponding path program 1 times [2020-08-18 16:27:46,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:27:46,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318725056] [2020-08-18 16:27:46,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:27:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:47,043 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 16:27:47,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:27:47,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:47,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:27:47,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318725056] [2020-08-18 16:27:47,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:27:47,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 16:27:47,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174086761] [2020-08-18 16:27:47,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 16:27:47,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:27:47,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 16:27:47,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:27:47,095 INFO L87 Difference]: Start difference. First operand 20283 states and 29041 transitions. Second operand 5 states.