/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.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:26:55,883 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:26:55,886 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:26:55,909 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:26:55,910 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:26:55,911 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:26:55,912 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:26:55,914 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:26:55,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:26:55,916 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:26:55,917 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:26:55,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:26:55,919 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:26:55,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:26:55,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:26:55,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:26:55,923 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:26:55,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:26:55,925 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:26:55,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:26:55,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:26:55,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:26:55,931 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:26:55,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:26:55,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 16:26:55,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:26:55,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:26:55,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:26:55,947 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 16:26:55,969 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:26:55,969 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:26:55,970 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:26:55,971 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:26:55,971 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:26:55,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:26:55,971 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:26:55,971 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:26:55,972 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:26:55,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:26:55,972 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:26:55,972 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:26:55,972 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:26:55,973 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:26:55,973 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:26:55,973 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:26:55,973 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:26:55,974 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:26:55,974 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:26:55,974 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:26:55,974 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:26:55,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:26:55,975 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:26:55,975 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:26:55,975 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:26:55,975 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:26:55,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:26:55,976 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:26:55,976 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:26:55,976 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 16:26:56,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:26:56,294 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:26:56,299 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:26:56,301 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:26:56,302 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:26:56,304 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-08-18 16:26:56,365 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/38e167b53/0b311ec170c14c0cbabb9da71db33a0e/FLAGee7db88d9 [2020-08-18 16:26:56,940 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:26:56,941 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-08-18 16:26:56,955 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/38e167b53/0b311ec170c14c0cbabb9da71db33a0e/FLAGee7db88d9 [2020-08-18 16:26:57,192 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/38e167b53/0b311ec170c14c0cbabb9da71db33a0e [2020-08-18 16:26:57,201 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:26:57,202 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:26:57,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:26:57,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:26:57,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:26:57,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:26:57" (1/1) ... [2020-08-18 16:26:57,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44452bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:26:57, skipping insertion in model container [2020-08-18 16:26:57,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:26:57" (1/1) ... [2020-08-18 16:26:57,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:26:57,287 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:26:57,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:26:57,937 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:26:58,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:26:58,484 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:26:58,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:26:58 WrapperNode [2020-08-18 16:26:58,485 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:26:58,486 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:26:58,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:26:58,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:26:58,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:26:58" (1/1) ... [2020-08-18 16:26:58,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:26:58" (1/1) ... [2020-08-18 16:26:58,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:26:58" (1/1) ... [2020-08-18 16:26:58,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:26:58" (1/1) ... [2020-08-18 16:26:58,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:26:58" (1/1) ... [2020-08-18 16:26:58,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:26:58" (1/1) ... [2020-08-18 16:26:58,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:26:58" (1/1) ... [2020-08-18 16:26:58,595 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:26:58,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:26:58,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:26:58,596 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:26:58,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:26:58" (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 16:26:58,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:26:58,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:26:58,677 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 16:26:58,677 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:26:58,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:26:58,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-18 16:26:58,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-08-18 16:26:58,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-18 16:26:58,680 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-18 16:26:58,680 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 16:26:58,680 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 16:26:58,681 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-18 16:26:58,682 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-18 16:26:58,682 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-08-18 16:26:58,682 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-08-18 16:26:58,683 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-08-18 16:26:58,683 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-18 16:26:58,683 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-18 16:26:58,683 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:26:58,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:26:58,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:27:00,378 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:27:00,378 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 16:27:00,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:27:00 BoogieIcfgContainer [2020-08-18 16:27:00,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:27:00,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:27:00,388 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:27:00,391 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:27:00,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:26:57" (1/3) ... [2020-08-18 16:27:00,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f6c6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:27:00, skipping insertion in model container [2020-08-18 16:27:00,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:26:58" (2/3) ... [2020-08-18 16:27:00,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f6c6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:27:00, skipping insertion in model container [2020-08-18 16:27:00,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:27:00" (3/3) ... [2020-08-18 16:27:00,395 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-08-18 16:27:00,407 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:27:00,416 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-08-18 16:27:00,432 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-08-18 16:27:00,464 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:27:00,465 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:27:00,465 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:27:00,465 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:27:00,465 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:27:00,466 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:27:00,466 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:27:00,466 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:27:00,497 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states. [2020-08-18 16:27:00,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-18 16:27:00,515 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:27:00,516 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 16:27:00,516 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:27:00,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:27:00,523 INFO L82 PathProgramCache]: Analyzing trace with hash 2118038307, now seen corresponding path program 1 times [2020-08-18 16:27:00,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:27:00,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658946557] [2020-08-18 16:27:00,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:27:01,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:01,591 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 16:27:01,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:27:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:01,680 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 16:27:01,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658946557] [2020-08-18 16:27:01,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:27:01,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:27:01,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953536478] [2020-08-18 16:27:01,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:27:01,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:27:01,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:27:01,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:27:01,707 INFO L87 Difference]: Start difference. First operand 423 states. Second operand 4 states. [2020-08-18 16:27:02,002 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-18 16:27:04,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:27:04,628 INFO L93 Difference]: Finished difference Result 779 states and 1361 transitions. [2020-08-18 16:27:04,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:27:04,631 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-08-18 16:27:04,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:27:04,656 INFO L225 Difference]: With dead ends: 779 [2020-08-18 16:27:04,656 INFO L226 Difference]: Without dead ends: 610 [2020-08-18 16:27:04,661 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 16:27:04,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2020-08-18 16:27:04,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 608. [2020-08-18 16:27:04,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2020-08-18 16:27:04,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 893 transitions. [2020-08-18 16:27:04,757 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 893 transitions. Word has length 148 [2020-08-18 16:27:04,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:27:04,758 INFO L479 AbstractCegarLoop]: Abstraction has 608 states and 893 transitions. [2020-08-18 16:27:04,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:27:04,758 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 893 transitions. [2020-08-18 16:27:04,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-18 16:27:04,763 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:27:04,763 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 16:27:04,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:27:04,764 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:27:04,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:27:04,765 INFO L82 PathProgramCache]: Analyzing trace with hash 482868223, now seen corresponding path program 1 times [2020-08-18 16:27:04,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:27:04,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310650830] [2020-08-18 16:27:04,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:27:04,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:05,274 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 16:27:05,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:27:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:05,351 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 16:27:05,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310650830] [2020-08-18 16:27:05,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:27:05,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:27:05,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948215572] [2020-08-18 16:27:05,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:27:05,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:27:05,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:27:05,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:27:05,357 INFO L87 Difference]: Start difference. First operand 608 states and 893 transitions. Second operand 4 states. [2020-08-18 16:27:05,586 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-18 16:27:07,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:27:07,822 INFO L93 Difference]: Finished difference Result 1231 states and 1864 transitions. [2020-08-18 16:27:07,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:27:07,822 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-08-18 16:27:07,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:27:07,840 INFO L225 Difference]: With dead ends: 1231 [2020-08-18 16:27:07,841 INFO L226 Difference]: Without dead ends: 990 [2020-08-18 16:27:07,847 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 16:27:07,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2020-08-18 16:27:07,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 988. [2020-08-18 16:27:07,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 988 states. [2020-08-18 16:27:07,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1475 transitions. [2020-08-18 16:27:07,952 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1475 transitions. Word has length 148 [2020-08-18 16:27:07,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:27:07,954 INFO L479 AbstractCegarLoop]: Abstraction has 988 states and 1475 transitions. [2020-08-18 16:27:07,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:27:07,954 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1475 transitions. [2020-08-18 16:27:07,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-18 16:27:07,965 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:27:07,966 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 16:27:07,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:27:07,966 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:27:07,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:27:07,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1233925245, now seen corresponding path program 1 times [2020-08-18 16:27:07,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:27:07,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149538549] [2020-08-18 16:27:07,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:27:08,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:08,489 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 16:27:08,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:27:08,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:08,550 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 16:27:08,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149538549] [2020-08-18 16:27:08,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:27:08,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 16:27:08,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533192841] [2020-08-18 16:27:08,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 16:27:08,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:27:08,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 16:27:08,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:27:08,553 INFO L87 Difference]: Start difference. First operand 988 states and 1475 transitions. Second operand 5 states. [2020-08-18 16:27:11,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:27:11,542 INFO L93 Difference]: Finished difference Result 2882 states and 4292 transitions. [2020-08-18 16:27:11,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:27:11,543 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-08-18 16:27:11,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:27:11,558 INFO L225 Difference]: With dead ends: 2882 [2020-08-18 16:27:11,558 INFO L226 Difference]: Without dead ends: 1907 [2020-08-18 16:27:11,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 16:27:11,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1907 states. [2020-08-18 16:27:11,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1907 to 1877. [2020-08-18 16:27:11,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1877 states. [2020-08-18 16:27:11,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1877 states to 1877 states and 2785 transitions. [2020-08-18 16:27:11,684 INFO L78 Accepts]: Start accepts. Automaton has 1877 states and 2785 transitions. Word has length 148 [2020-08-18 16:27:11,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:27:11,685 INFO L479 AbstractCegarLoop]: Abstraction has 1877 states and 2785 transitions. [2020-08-18 16:27:11,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 16:27:11,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1877 states and 2785 transitions. [2020-08-18 16:27:11,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-18 16:27:11,692 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:27:11,692 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 16:27:11,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:27:11,693 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:27:11,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:27:11,693 INFO L82 PathProgramCache]: Analyzing trace with hash -603333123, now seen corresponding path program 1 times [2020-08-18 16:27:11,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:27:11,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [18202660] [2020-08-18 16:27:11,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:27:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:12,006 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 16:27:12,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:27:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:12,073 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 16:27:12,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [18202660] [2020-08-18 16:27:12,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:27:12,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:27:12,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48860380] [2020-08-18 16:27:12,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:27:12,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:27:12,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:27:12,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:27:12,077 INFO L87 Difference]: Start difference. First operand 1877 states and 2785 transitions. Second operand 4 states. [2020-08-18 16:27:15,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:27:15,497 INFO L93 Difference]: Finished difference Result 5585 states and 8285 transitions. [2020-08-18 16:27:15,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 16:27:15,498 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-08-18 16:27:15,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:27:15,516 INFO L225 Difference]: With dead ends: 5585 [2020-08-18 16:27:15,516 INFO L226 Difference]: Without dead ends: 3740 [2020-08-18 16:27:15,520 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 16:27:15,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3740 states. [2020-08-18 16:27:15,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3740 to 1879. [2020-08-18 16:27:15,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1879 states. [2020-08-18 16:27:15,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1879 states to 1879 states and 2787 transitions. [2020-08-18 16:27:15,620 INFO L78 Accepts]: Start accepts. Automaton has 1879 states and 2787 transitions. Word has length 149 [2020-08-18 16:27:15,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:27:15,621 INFO L479 AbstractCegarLoop]: Abstraction has 1879 states and 2787 transitions. [2020-08-18 16:27:15,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:27:15,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1879 states and 2787 transitions. [2020-08-18 16:27:15,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 16:27:15,625 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:27:15,625 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:27:15,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:27:15,626 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:27:15,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:27:15,626 INFO L82 PathProgramCache]: Analyzing trace with hash -428194662, now seen corresponding path program 1 times [2020-08-18 16:27:15,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:27:15,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819898821] [2020-08-18 16:27:15,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:27:15,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:15,977 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 16:27:15,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:27:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:16,030 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 16:27:16,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819898821] [2020-08-18 16:27:16,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:27:16,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:27:16,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985335255] [2020-08-18 16:27:16,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:27:16,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:27:16,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:27:16,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:27:16,033 INFO L87 Difference]: Start difference. First operand 1879 states and 2787 transitions. Second operand 4 states. [2020-08-18 16:27:19,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:27:19,627 INFO L93 Difference]: Finished difference Result 4949 states and 7331 transitions. [2020-08-18 16:27:19,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 16:27:19,627 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-08-18 16:27:19,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:27:19,646 INFO L225 Difference]: With dead ends: 4949 [2020-08-18 16:27:19,647 INFO L226 Difference]: Without dead ends: 3255 [2020-08-18 16:27:19,652 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 16:27:19,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3255 states. [2020-08-18 16:27:19,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3255 to 3225. [2020-08-18 16:27:19,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3225 states. [2020-08-18 16:27:19,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3225 states to 3225 states and 4733 transitions. [2020-08-18 16:27:19,872 INFO L78 Accepts]: Start accepts. Automaton has 3225 states and 4733 transitions. Word has length 150 [2020-08-18 16:27:19,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:27:19,873 INFO L479 AbstractCegarLoop]: Abstraction has 3225 states and 4733 transitions. [2020-08-18 16:27:19,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:27:19,873 INFO L276 IsEmpty]: Start isEmpty. Operand 3225 states and 4733 transitions. [2020-08-18 16:27:19,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 16:27:19,879 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:27:19,880 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 16:27:19,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:27:19,880 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:27:19,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:27:19,881 INFO L82 PathProgramCache]: Analyzing trace with hash 908644727, now seen corresponding path program 1 times [2020-08-18 16:27:19,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:27:19,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049333963] [2020-08-18 16:27:19,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:27:19,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:20,322 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 16:27:20,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:27:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:20,372 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 16:27:20,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1049333963] [2020-08-18 16:27:20,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:27:20,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 16:27:20,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905207448] [2020-08-18 16:27:20,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 16:27:20,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:27:20,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 16:27:20,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:27:20,385 INFO L87 Difference]: Start difference. First operand 3225 states and 4733 transitions. Second operand 5 states. [2020-08-18 16:27:22,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:27:22,645 INFO L93 Difference]: Finished difference Result 6686 states and 9749 transitions. [2020-08-18 16:27:22,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:27:22,646 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-08-18 16:27:22,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:27:22,661 INFO L225 Difference]: With dead ends: 6686 [2020-08-18 16:27:22,661 INFO L226 Difference]: Without dead ends: 3404 [2020-08-18 16:27:22,667 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 16:27:22,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3404 states. [2020-08-18 16:27:22,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3404 to 3373. [2020-08-18 16:27:22,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3373 states. [2020-08-18 16:27:22,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3373 states to 3373 states and 4896 transitions. [2020-08-18 16:27:22,811 INFO L78 Accepts]: Start accepts. Automaton has 3373 states and 4896 transitions. Word has length 150 [2020-08-18 16:27:22,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:27:22,812 INFO L479 AbstractCegarLoop]: Abstraction has 3373 states and 4896 transitions. [2020-08-18 16:27:22,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 16:27:22,812 INFO L276 IsEmpty]: Start isEmpty. Operand 3373 states and 4896 transitions. [2020-08-18 16:27:22,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 16:27:22,820 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:27:22,820 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 16:27:22,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 16:27:22,822 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:27:22,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:27:22,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1901273852, now seen corresponding path program 1 times [2020-08-18 16:27:22,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:27:22,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251341815] [2020-08-18 16:27:22,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:27:22,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:23,214 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 16:27:23,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:27:23,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:23,263 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 16:27:23,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251341815] [2020-08-18 16:27:23,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:27:23,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 16:27:23,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830403814] [2020-08-18 16:27:23,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 16:27:23,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:27:23,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 16:27:23,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:27:23,266 INFO L87 Difference]: Start difference. First operand 3373 states and 4896 transitions. Second operand 5 states. [2020-08-18 16:27:26,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:27:26,239 INFO L93 Difference]: Finished difference Result 9783 states and 14126 transitions. [2020-08-18 16:27:26,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:27:26,240 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-08-18 16:27:26,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:27:26,269 INFO L225 Difference]: With dead ends: 9783 [2020-08-18 16:27:26,270 INFO L226 Difference]: Without dead ends: 6482 [2020-08-18 16:27:26,278 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 16:27:26,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6482 states. [2020-08-18 16:27:26,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6482 to 6451. [2020-08-18 16:27:26,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6451 states. [2020-08-18 16:27:26,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6451 states to 6451 states and 9243 transitions. [2020-08-18 16:27:26,555 INFO L78 Accepts]: Start accepts. Automaton has 6451 states and 9243 transitions. Word has length 150 [2020-08-18 16:27:26,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:27:26,555 INFO L479 AbstractCegarLoop]: Abstraction has 6451 states and 9243 transitions. [2020-08-18 16:27:26,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 16:27:26,556 INFO L276 IsEmpty]: Start isEmpty. Operand 6451 states and 9243 transitions. [2020-08-18 16:27:26,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-18 16:27:26,566 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:27:26,567 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 16:27:26,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 16:27:26,567 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:27:26,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:27:26,567 INFO L82 PathProgramCache]: Analyzing trace with hash 183741790, now seen corresponding path program 1 times [2020-08-18 16:27:26,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:27:26,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460847081] [2020-08-18 16:27:26,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:27:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:26,935 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 16:27:26,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:27:26,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:26,972 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 16:27:26,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460847081] [2020-08-18 16:27:26,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:27:26,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:27:26,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574221416] [2020-08-18 16:27:26,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:27:26,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:27:26,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:27:26,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:27:26,975 INFO L87 Difference]: Start difference. First operand 6451 states and 9243 transitions. Second operand 4 states. [2020-08-18 16:27:29,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:27:29,575 INFO L93 Difference]: Finished difference Result 19159 states and 27425 transitions. [2020-08-18 16:27:29,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 16:27:29,580 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-08-18 16:27:29,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:27:29,620 INFO L225 Difference]: With dead ends: 19159 [2020-08-18 16:27:29,620 INFO L226 Difference]: Without dead ends: 12824 [2020-08-18 16:27:29,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:27:29,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12824 states. [2020-08-18 16:27:29,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12824 to 6463. [2020-08-18 16:27:29,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6463 states. [2020-08-18 16:27:29,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6463 states to 6463 states and 9255 transitions. [2020-08-18 16:27:29,966 INFO L78 Accepts]: Start accepts. Automaton has 6463 states and 9255 transitions. Word has length 151 [2020-08-18 16:27:29,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:27:29,967 INFO L479 AbstractCegarLoop]: Abstraction has 6463 states and 9255 transitions. [2020-08-18 16:27:29,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:27:29,967 INFO L276 IsEmpty]: Start isEmpty. Operand 6463 states and 9255 transitions. [2020-08-18 16:27:29,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-18 16:27:29,977 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:27:29,977 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 16:27:29,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 16:27:29,977 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:27:29,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:27:29,978 INFO L82 PathProgramCache]: Analyzing trace with hash -22670587, now seen corresponding path program 1 times [2020-08-18 16:27:29,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:27:29,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372165074] [2020-08-18 16:27:29,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:27:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:30,430 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 16:27:30,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:27:30,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:30,532 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 16:27:30,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372165074] [2020-08-18 16:27:30,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:27:30,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 16:27:30,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874211085] [2020-08-18 16:27:30,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 16:27:30,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:27:30,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 16:27:30,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:27:30,536 INFO L87 Difference]: Start difference. First operand 6463 states and 9255 transitions. Second operand 5 states. [2020-08-18 16:27:33,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:27:33,207 INFO L93 Difference]: Finished difference Result 17409 states and 24785 transitions. [2020-08-18 16:27:33,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:27:33,212 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-08-18 16:27:33,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:27:33,237 INFO L225 Difference]: With dead ends: 17409 [2020-08-18 16:27:33,238 INFO L226 Difference]: Without dead ends: 11072 [2020-08-18 16:27:33,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 16:27:33,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11072 states. [2020-08-18 16:27:33,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11072 to 11041. [2020-08-18 16:27:33,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11041 states. [2020-08-18 16:27:33,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11041 states to 11041 states and 15539 transitions. [2020-08-18 16:27:33,829 INFO L78 Accepts]: Start accepts. Automaton has 11041 states and 15539 transitions. Word has length 152 [2020-08-18 16:27:33,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:27:33,829 INFO L479 AbstractCegarLoop]: Abstraction has 11041 states and 15539 transitions. [2020-08-18 16:27:33,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 16:27:33,830 INFO L276 IsEmpty]: Start isEmpty. Operand 11041 states and 15539 transitions. [2020-08-18 16:27:33,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-18 16:27:33,851 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:27:33,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:27:33,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 16:27:33,851 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:27:33,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:27:33,852 INFO L82 PathProgramCache]: Analyzing trace with hash 953495673, now seen corresponding path program 1 times [2020-08-18 16:27:33,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:27:33,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868970441] [2020-08-18 16:27:33,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:27:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:34,224 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 16:27:34,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:27:34,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:34,298 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 16:27:34,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868970441] [2020-08-18 16:27:34,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:27:34,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 16:27:34,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145880972] [2020-08-18 16:27:34,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 16:27:34,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:27:34,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 16:27:34,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:27:34,301 INFO L87 Difference]: Start difference. First operand 11041 states and 15539 transitions. Second operand 5 states. [2020-08-18 16:27:38,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:27:38,307 INFO L93 Difference]: Finished difference Result 31193 states and 43903 transitions. [2020-08-18 16:27:38,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:27:38,308 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-08-18 16:27:38,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:27:38,348 INFO L225 Difference]: With dead ends: 31193 [2020-08-18 16:27:38,348 INFO L226 Difference]: Without dead ends: 20491 [2020-08-18 16:27:38,371 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 16:27:38,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20491 states. [2020-08-18 16:27:39,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20491 to 20468. [2020-08-18 16:27:39,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20468 states. [2020-08-18 16:27:39,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20468 states to 20468 states and 28516 transitions. [2020-08-18 16:27:39,325 INFO L78 Accepts]: Start accepts. Automaton has 20468 states and 28516 transitions. Word has length 154 [2020-08-18 16:27:39,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:27:39,325 INFO L479 AbstractCegarLoop]: Abstraction has 20468 states and 28516 transitions. [2020-08-18 16:27:39,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 16:27:39,326 INFO L276 IsEmpty]: Start isEmpty. Operand 20468 states and 28516 transitions. [2020-08-18 16:27:39,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-18 16:27:39,348 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:27:39,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:27:39,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 16:27:39,349 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:27:39,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:27:39,349 INFO L82 PathProgramCache]: Analyzing trace with hash -734941375, now seen corresponding path program 1 times [2020-08-18 16:27:39,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:27:39,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254687435] [2020-08-18 16:27:39,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:27:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:39,780 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 16:27:39,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:27:39,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:27:39,867 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 16:27:39,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254687435] [2020-08-18 16:27:39,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:27:39,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 16:27:39,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811106576] [2020-08-18 16:27:39,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 16:27:39,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:27:39,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 16:27:39,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:27:39,870 INFO L87 Difference]: Start difference. First operand 20468 states and 28516 transitions. Second operand 5 states. [2020-08-18 16:27:44,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:27:44,338 INFO L93 Difference]: Finished difference Result 28775 states and 39937 transitions. [2020-08-18 16:27:44,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:27:44,339 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-08-18 16:27:44,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:27:44,371 INFO L225 Difference]: With dead ends: 28775 [2020-08-18 16:27:44,371 INFO L226 Difference]: Without dead ends: 20504 [2020-08-18 16:27:44,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 16:27:44,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20504 states. [2020-08-18 16:27:45,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20504 to 20181. [2020-08-18 16:27:45,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20181 states. [2020-08-18 16:27:45,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20181 states to 20181 states and 28104 transitions. [2020-08-18 16:27:45,212 INFO L78 Accepts]: Start accepts. Automaton has 20181 states and 28104 transitions. Word has length 154 [2020-08-18 16:27:45,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:27:45,213 INFO L479 AbstractCegarLoop]: Abstraction has 20181 states and 28104 transitions. [2020-08-18 16:27:45,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 16:27:45,213 INFO L276 IsEmpty]: Start isEmpty. Operand 20181 states and 28104 transitions. [2020-08-18 16:27:45,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-18 16:27:45,237 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:27:45,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:27:45,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 16:27:45,238 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:27:45,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:27:45,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1377742214, now seen corresponding path program 1 times [2020-08-18 16:27:45,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:27:45,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251094815] [2020-08-18 16:27:45,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:27:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 16:27:45,313 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 16:27:45,314 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 16:27:45,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 16:27:45,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 04:27:45 BoogieIcfgContainer [2020-08-18 16:27:45,422 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 16:27:45,430 INFO L168 Benchmark]: Toolchain (without parser) took 48221.64 ms. Allocated memory was 139.5 MB in the beginning and 1.2 GB in the end (delta: 1.0 GB). Free memory was 100.3 MB in the beginning and 236.5 MB in the end (delta: -136.2 MB). Peak memory consumption was 884.1 MB. Max. memory is 7.1 GB. [2020-08-18 16:27:45,431 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 16:27:45,433 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1282.36 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 100.1 MB in the beginning and 163.7 MB in the end (delta: -63.7 MB). Peak memory consumption was 39.2 MB. Max. memory is 7.1 GB. [2020-08-18 16:27:45,433 INFO L168 Benchmark]: Boogie Preprocessor took 109.27 ms. Allocated memory is still 203.9 MB. Free memory was 163.7 MB in the beginning and 158.7 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. [2020-08-18 16:27:45,438 INFO L168 Benchmark]: RCFGBuilder took 1790.67 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 158.7 MB in the beginning and 97.7 MB in the end (delta: 61.0 MB). Peak memory consumption was 94.0 MB. Max. memory is 7.1 GB. [2020-08-18 16:27:45,439 INFO L168 Benchmark]: TraceAbstraction took 45034.14 ms. Allocated memory was 237.0 MB in the beginning and 1.2 GB in the end (delta: 922.7 MB). Free memory was 97.7 MB in the beginning and 236.5 MB in the end (delta: -138.8 MB). Peak memory consumption was 784.0 MB. Max. memory is 7.1 GB. [2020-08-18 16:27:45,445 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1282.36 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 100.1 MB in the beginning and 163.7 MB in the end (delta: -63.7 MB). Peak memory consumption was 39.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.27 ms. Allocated memory is still 203.9 MB. Free memory was 163.7 MB in the beginning and 158.7 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1790.67 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 158.7 MB in the beginning and 97.7 MB in the end (delta: 61.0 MB). Peak memory consumption was 94.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 45034.14 ms. Allocated memory was 237.0 MB in the beginning and 1.2 GB in the end (delta: 922.7 MB). Free memory was 97.7 MB in the beginning and 236.5 MB in the end (delta: -138.8 MB). Peak memory consumption was 784.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 892]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L15] msg_t nomsg = (msg_t )-1; [L16] port_t p12 = 0; [L17] char p12_old = '\x0'; [L18] char p12_new = '\x0'; [L19] _Bool ep12 = 0; [L20] port_t p13 = 0; [L21] char p13_old = '\x0'; [L22] char p13_new = '\x0'; [L23] _Bool ep13 = 0; [L24] port_t p21 = 0; [L25] char p21_old = '\x0'; [L26] char p21_new = '\x0'; [L27] _Bool ep21 = 0; [L28] port_t p23 = 0; [L29] char p23_old = '\x0'; [L30] char p23_new = '\x0'; [L31] _Bool ep23 = 0; [L32] port_t p31 = 0; [L33] char p31_old = '\x0'; [L34] char p31_new = '\x0'; [L35] _Bool ep31 = 0; [L36] port_t p32 = 0; [L37] char p32_old = '\x0'; [L38] char p32_new = '\x0'; [L39] _Bool ep32 = 0; [L40] char id1 = '\x0'; [L41] unsigned char r1 = '\x0'; [L42] char st1 = '\x0'; [L43] char nl1 = '\x0'; [L44] char m1 = '\x0'; [L45] char max1 = '\x0'; [L46] _Bool mode1 = 0; [L47] _Bool newmax1 = 0; [L48] char id2 = '\x0'; [L49] unsigned char r2 = '\x0'; [L50] char st2 = '\x0'; [L51] char nl2 = '\x0'; [L52] char m2 = '\x0'; [L53] char max2 = '\x0'; [L54] _Bool mode2 = 0; [L55] _Bool newmax2 = 0; [L56] char id3 = '\x0'; [L57] unsigned char r3 = '\x0'; [L58] char st3 = '\x0'; [L59] char nl3 = '\x0'; [L60] char m3 = '\x0'; [L61] char max3 = '\x0'; [L62] _Bool mode3 = 0; [L63] _Bool newmax3 = 0; [L67] void (*nodes[3])() = { &node1, &node2, &node3 }; [L71] int __return_1873; [L72] int __return_2019; [L73] int __return_2152; [L74] int __return_2288; [L75] int __return_3084; [L76] int __return_3053; [L77] int __return_2989; [L78] int __return_2955; [L79] int __return_2551; [L80] int __return_2840; [L81] int __return_2806; [L82] int __return_2721; [L83] int __return_2426; [L86] int main__c1; [L87] int main__i2; [L88] main__c1 = 0 [L89] ep12 = __VERIFIER_nondet_bool() [L90] ep13 = __VERIFIER_nondet_bool() [L91] ep21 = __VERIFIER_nondet_bool() [L92] ep23 = __VERIFIER_nondet_bool() [L93] ep31 = __VERIFIER_nondet_bool() [L94] ep32 = __VERIFIER_nondet_bool() [L95] id1 = __VERIFIER_nondet_char() [L96] r1 = __VERIFIER_nondet_uchar() [L97] st1 = __VERIFIER_nondet_char() [L98] nl1 = __VERIFIER_nondet_char() [L99] m1 = __VERIFIER_nondet_char() [L100] max1 = __VERIFIER_nondet_char() [L101] mode1 = __VERIFIER_nondet_bool() [L102] newmax1 = __VERIFIER_nondet_bool() [L103] id2 = __VERIFIER_nondet_char() [L104] r2 = __VERIFIER_nondet_uchar() [L105] st2 = __VERIFIER_nondet_char() [L106] nl2 = __VERIFIER_nondet_char() [L107] m2 = __VERIFIER_nondet_char() [L108] max2 = __VERIFIER_nondet_char() [L109] mode2 = __VERIFIER_nondet_bool() [L110] newmax2 = __VERIFIER_nondet_bool() [L111] id3 = __VERIFIER_nondet_char() [L112] r3 = __VERIFIER_nondet_uchar() [L113] st3 = __VERIFIER_nondet_char() [L114] nl3 = __VERIFIER_nondet_char() [L115] m3 = __VERIFIER_nondet_char() [L116] max3 = __VERIFIER_nondet_char() [L117] mode3 = __VERIFIER_nondet_bool() [L118] newmax3 = __VERIFIER_nondet_bool() [L120] _Bool init__r121; [L121] _Bool init__r131; [L122] _Bool init__r211; [L123] _Bool init__r231; [L124] _Bool init__r311; [L125] _Bool init__r321; [L126] _Bool init__r122; [L127] int init__tmp; [L128] _Bool init__r132; [L129] int init__tmp___0; [L130] _Bool init__r212; [L131] int init__tmp___1; [L132] _Bool init__r232; [L133] int init__tmp___2; [L134] _Bool init__r312; [L135] int init__tmp___3; [L136] _Bool init__r322; [L137] int init__tmp___4; [L138] int init__tmp___5; [L139] init__r121 = ep12 [L140] init__r131 = ep13 [L141] init__r211 = ep21 [L142] init__r231 = ep23 [L143] init__r311 = ep31 [L144] init__r321 = ep32 [L145] COND FALSE !(!(init__r121 == 0)) [L3186] COND FALSE !(!(init__r131 == 0)) [L3202] init__tmp = 0 [L149] init__r122 = (_Bool)init__tmp [L150] COND FALSE !(!(init__r131 == 0)) [L3163] COND FALSE !(!(init__r121 == 0)) [L3179] init__tmp___0 = 0 [L154] init__r132 = (_Bool)init__tmp___0 [L155] COND FALSE !(!(init__r211 == 0)) [L3140] COND FALSE !(!(init__r231 == 0)) [L3156] init__tmp___1 = 0 [L159] init__r212 = (_Bool)init__tmp___1 [L160] COND FALSE !(!(init__r231 == 0)) [L3117] COND FALSE !(!(init__r211 == 0)) [L3133] init__tmp___2 = 0 [L164] init__r232 = (_Bool)init__tmp___2 [L165] COND FALSE !(!(init__r311 == 0)) [L3094] COND FALSE !(!(init__r321 == 0)) [L3110] init__tmp___3 = 0 [L169] init__r312 = (_Bool)init__tmp___3 [L170] COND FALSE !(!(init__r321 == 0)) [L3071] COND FALSE !(!(init__r311 == 0)) [L3087] init__tmp___4 = 0 [L174] init__r322 = (_Bool)init__tmp___4 [L175] COND TRUE ((int)id1) != ((int)id2) [L177] COND TRUE ((int)id1) != ((int)id3) [L179] COND TRUE ((int)id2) != ((int)id3) [L181] COND TRUE ((int)id1) >= 0 [L183] COND TRUE ((int)id2) >= 0 [L185] COND TRUE ((int)id3) >= 0 [L187] COND TRUE ((int)r1) == 0 [L189] COND TRUE ((int)r2) == 0 [L191] COND TRUE ((int)r3) == 0 [L193] COND TRUE ((int)max1) == ((int)id1) [L195] COND TRUE ((int)max2) == ((int)id2) [L197] COND TRUE ((int)max3) == ((int)id3) [L199] COND TRUE ((int)st1) == 0 [L201] COND TRUE ((int)st2) == 0 [L203] COND TRUE ((int)st3) == 0 [L205] COND TRUE ((int)nl1) == 0 [L207] COND TRUE ((int)nl2) == 0 [L209] COND TRUE ((int)nl3) == 0 [L211] COND TRUE ((int)mode1) == 0 [L213] COND TRUE ((int)mode2) == 0 [L215] COND TRUE ((int)mode3) == 0 [L217] COND TRUE !(newmax1 == 0) [L219] COND TRUE !(newmax2 == 0) [L221] COND TRUE !(newmax3 == 0) [L223] init__tmp___5 = 1 [L224] __return_1873 = init__tmp___5 [L225] main__i2 = __return_1873 [L226] COND TRUE main__i2 != 0 [L228] p12_old = nomsg [L229] p12_new = nomsg [L230] p13_old = nomsg [L231] p13_new = nomsg [L232] p21_old = nomsg [L233] p21_new = nomsg [L234] p23_old = nomsg [L235] p23_new = nomsg [L236] p31_old = nomsg [L237] p31_new = nomsg [L238] p32_old = nomsg [L239] p32_new = nomsg [L240] main__i2 = 0 [L242] _Bool node1__newmax; [L243] node1__newmax = 0 [L244] COND FALSE !(!(mode1 == 0)) [L250] COND TRUE ((int)r1) < 2 [L252] COND FALSE !(!(ep12 == 0)) [L265] COND FALSE !(!(ep13 == 0)) [L278] mode1 = 1 [L280] _Bool node2__newmax; [L281] node2__newmax = 0 [L282] COND FALSE !(!(mode2 == 0)) [L288] COND TRUE ((int)r2) < 2 [L290] COND FALSE !(!(ep21 == 0)) [L303] COND FALSE !(!(ep23 == 0)) [L316] mode2 = 1 [L318] _Bool node3__newmax; [L319] node3__newmax = 0 [L320] COND FALSE !(!(mode3 == 0)) [L326] COND TRUE ((int)r3) < 2 [L328] COND FALSE !(!(ep31 == 0)) [L341] COND FALSE !(!(ep32 == 0)) [L354] mode3 = 1 [L355] p12_old = p12_new [L356] p12_new = nomsg [L357] p13_old = p13_new [L358] p13_new = nomsg [L359] p21_old = p21_new [L360] p21_new = nomsg [L361] p23_old = p23_new [L362] p23_new = nomsg [L363] p31_old = p31_new [L364] p31_new = nomsg [L365] p32_old = p32_new [L366] p32_new = nomsg [L368] int check__tmp; [L369] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L371] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L373] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L375] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L377] COND FALSE !(((int)r1) >= 2) [L383] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L385] COND TRUE ((int)r1) < 2 [L387] COND FALSE !(((int)r1) >= 2) [L393] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L395] COND TRUE ((int)r1) < 2 [L397] check__tmp = 1 [L398] __return_2019 = check__tmp [L399] main__c1 = __return_2019 [L401] _Bool __tmp_1; [L402] __tmp_1 = main__c1 [L403] _Bool assert__arg; [L404] assert__arg = __tmp_1 [L405] COND FALSE !(assert__arg == 0) [L412] _Bool node1__newmax; [L413] node1__newmax = 0 [L414] COND TRUE !(mode1 == 0) [L416] COND FALSE !(r1 == 255) [L422] r1 = r1 + 1 [L423] COND FALSE !(!(ep21 == 0)) [L432] COND FALSE !(!(ep31 == 0)) [L441] newmax1 = node1__newmax [L442] COND FALSE !(((int)r1) == 2) [L448] mode1 = 0 [L450] _Bool node2__newmax; [L451] node2__newmax = 0 [L452] COND TRUE !(mode2 == 0) [L454] COND FALSE !(r2 == 255) [L460] r2 = r2 + 1 [L461] COND FALSE !(!(ep12 == 0)) [L470] COND FALSE !(!(ep32 == 0)) [L479] newmax2 = node2__newmax [L480] COND FALSE !(((int)r2) == 2) [L486] mode2 = 0 [L488] _Bool node3__newmax; [L489] node3__newmax = 0 [L490] COND TRUE !(mode3 == 0) [L492] COND FALSE !(r3 == 255) [L498] r3 = r3 + 1 [L499] COND FALSE !(!(ep13 == 0)) [L508] COND FALSE !(!(ep23 == 0)) [L517] newmax3 = node3__newmax [L518] COND FALSE !(((int)r3) == 2) [L524] mode3 = 0 [L525] p12_old = p12_new [L526] p12_new = nomsg [L527] p13_old = p13_new [L528] p13_new = nomsg [L529] p21_old = p21_new [L530] p21_new = nomsg [L531] p23_old = p23_new [L532] p23_new = nomsg [L533] p31_old = p31_new [L534] p31_new = nomsg [L535] p32_old = p32_new [L536] p32_new = nomsg [L538] int check__tmp; [L539] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L541] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L543] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L545] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L547] COND FALSE !(((int)r1) >= 2) [L553] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L555] COND TRUE ((int)r1) < 2 [L557] COND FALSE !(((int)r1) >= 2) [L563] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L565] COND TRUE ((int)r1) < 2 [L567] check__tmp = 1 [L568] __return_2152 = check__tmp [L569] main__c1 = __return_2152 [L571] _Bool __tmp_2; [L572] __tmp_2 = main__c1 [L573] _Bool assert__arg; [L574] assert__arg = __tmp_2 [L575] COND FALSE !(assert__arg == 0) [L582] _Bool node1__newmax; [L583] node1__newmax = 0 [L584] COND FALSE !(!(mode1 == 0)) [L590] COND TRUE ((int)r1) < 2 [L592] COND FALSE !(!(ep12 == 0)) [L605] COND FALSE !(!(ep13 == 0)) [L618] mode1 = 1 [L620] _Bool node2__newmax; [L621] node2__newmax = 0 [L622] COND FALSE !(!(mode2 == 0)) [L628] COND TRUE ((int)r2) < 2 [L630] COND FALSE !(!(ep21 == 0)) [L643] COND FALSE !(!(ep23 == 0)) [L656] mode2 = 1 [L658] _Bool node3__newmax; [L659] node3__newmax = 0 [L660] COND FALSE !(!(mode3 == 0)) [L666] COND TRUE ((int)r3) < 2 [L668] COND FALSE !(!(ep31 == 0)) [L681] COND FALSE !(!(ep32 == 0)) [L694] mode3 = 1 [L695] p12_old = p12_new [L696] p12_new = nomsg [L697] p13_old = p13_new [L698] p13_new = nomsg [L699] p21_old = p21_new [L700] p21_new = nomsg [L701] p23_old = p23_new [L702] p23_new = nomsg [L703] p31_old = p31_new [L704] p31_new = nomsg [L705] p32_old = p32_new [L706] p32_new = nomsg [L708] int check__tmp; [L709] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L711] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L713] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L715] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L717] COND FALSE !(((int)r1) >= 2) [L723] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L725] COND TRUE ((int)r1) < 2 [L727] COND FALSE !(((int)r1) >= 2) [L733] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L735] COND TRUE ((int)r1) < 2 [L737] check__tmp = 1 [L738] __return_2288 = check__tmp [L739] main__c1 = __return_2288 [L741] _Bool __tmp_3; [L742] __tmp_3 = main__c1 [L743] _Bool assert__arg; [L744] assert__arg = __tmp_3 [L745] COND FALSE !(assert__arg == 0) [L752] _Bool node1__newmax; [L753] node1__newmax = 0 [L754] COND TRUE !(mode1 == 0) [L756] COND FALSE !(r1 == 255) [L762] r1 = r1 + 1 [L763] COND FALSE !(!(ep21 == 0)) [L772] COND FALSE !(!(ep31 == 0)) [L781] newmax1 = node1__newmax [L782] COND TRUE ((int)r1) == 2 [L784] COND TRUE ((int)max1) == ((int)id1) [L786] st1 = 1 [L787] mode1 = 0 [L789] _Bool node2__newmax; [L790] node2__newmax = 0 [L791] COND TRUE !(mode2 == 0) [L793] COND FALSE !(r2 == 255) [L799] r2 = r2 + 1 [L800] COND FALSE !(!(ep12 == 0)) [L809] COND FALSE !(!(ep32 == 0)) [L818] newmax2 = node2__newmax [L819] COND TRUE ((int)r2) == 2 [L821] COND TRUE ((int)max2) == ((int)id2) [L823] st2 = 1 [L824] mode2 = 0 [L826] _Bool node3__newmax; [L827] node3__newmax = 0 [L828] COND TRUE !(mode3 == 0) [L830] COND FALSE !(r3 == 255) [L836] r3 = r3 + 1 [L837] COND FALSE !(!(ep13 == 0)) [L846] COND FALSE !(!(ep23 == 0)) [L855] newmax3 = node3__newmax [L856] COND TRUE ((int)r3) == 2 [L858] COND TRUE ((int)max3) == ((int)id3) [L860] st3 = 1 [L861] mode3 = 0 [L862] p12_old = p12_new [L863] p12_new = nomsg [L864] p13_old = p13_new [L865] p13_new = nomsg [L866] p21_old = p21_new [L867] p21_new = nomsg [L868] p23_old = p23_new [L869] p23_new = nomsg [L870] p31_old = p31_new [L871] p31_new = nomsg [L872] p32_old = p32_new [L873] p32_new = nomsg [L875] int check__tmp; [L876] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L882] check__tmp = 0 [L883] __return_3084 = check__tmp [L884] main__c1 = __return_3084 [L886] _Bool __tmp_4; [L887] __tmp_4 = main__c1 [L888] _Bool assert__arg; [L889] assert__arg = __tmp_4 [L890] COND TRUE assert__arg == 0 [L892] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 427 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 44.8s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 34.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10125 SDtfs, 10471 SDslu, 5974 SDs, 0 SdLazy, 10715 SolverSat, 118 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 24.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20468occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.7s AutomataMinimizationTime, 11 MinimizatonAttempts, 8725 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 1808 NumberOfCodeBlocks, 1808 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1643 ConstructedInterpolants, 0 QuantifiedInterpolants, 955712 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...