/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:13:44,377 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:13:44,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:13:44,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:13:44,425 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:13:44,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:13:44,428 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:13:44,433 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:13:44,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:13:44,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:13:44,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:13:44,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:13:44,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:13:44,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:13:44,444 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:13:44,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:13:44,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:13:44,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:13:44,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:13:44,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:13:44,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:13:44,453 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:13:44,455 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:13:44,455 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:13:44,458 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:13:44,458 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:13:44,458 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:13:44,459 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:13:44,460 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:13:44,461 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:13:44,461 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:13:44,462 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:13:44,463 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:13:44,463 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:13:44,465 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:13:44,465 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:13:44,466 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:13:44,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:13:44,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:13:44,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:13:44,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:13:44,469 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 [2020-09-24 16:13:44,494 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:13:44,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:13:44,496 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:13:44,496 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:13:44,497 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:13:44,497 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:13:44,497 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:13:44,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:13:44,498 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:13:44,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:13:44,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:13:44,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:13:44,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:13:44,499 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:13:44,499 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:13:44,499 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:13:44,499 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:13:44,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:13:44,500 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:13:44,500 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:13:44,500 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:13:44,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:13:44,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:13:44,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:13:44,501 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:13:44,501 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:13:44,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:13:44,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:13:44,502 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:13:44,502 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 16:13:45,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:13:45,032 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:13:45,036 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:13:45,038 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:13:45,039 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:13:45,041 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-24 16:13:45,119 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e366c6a3/d6e3caf0db914f32899b9de500bb216e/FLAGf6b1c06fa [2020-09-24 16:13:45,806 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:13:45,810 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-24 16:13:45,837 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e366c6a3/d6e3caf0db914f32899b9de500bb216e/FLAGf6b1c06fa [2020-09-24 16:13:45,987 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e366c6a3/d6e3caf0db914f32899b9de500bb216e [2020-09-24 16:13:46,000 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:13:46,006 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:13:46,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:13:46,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:13:46,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:13:46,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:13:45" (1/1) ... [2020-09-24 16:13:46,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@632a6d5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:46, skipping insertion in model container [2020-09-24 16:13:46,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:13:45" (1/1) ... [2020-09-24 16:13:46,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:13:46,110 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:13:46,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:13:46,800 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:13:46,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:13:46,998 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:13:46,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:46 WrapperNode [2020-09-24 16:13:46,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:13:47,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:13:47,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:13:47,000 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:13:47,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:46" (1/1) ... [2020-09-24 16:13:47,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:46" (1/1) ... [2020-09-24 16:13:47,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:46" (1/1) ... [2020-09-24 16:13:47,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:46" (1/1) ... [2020-09-24 16:13:47,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:46" (1/1) ... [2020-09-24 16:13:47,088 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:46" (1/1) ... [2020-09-24 16:13:47,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:46" (1/1) ... [2020-09-24 16:13:47,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:13:47,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:13:47,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:13:47,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:13:47,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:46" (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 [2020-09-24 16:13:47,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:13:47,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:13:47,209 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 16:13:47,210 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:13:47,210 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:13:47,210 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 16:13:47,210 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-24 16:13:47,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 16:13:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-24 16:13:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 16:13:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 16:13:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-24 16:13:47,213 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-24 16:13:47,213 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-24 16:13:47,213 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-24 16:13:47,214 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-24 16:13:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-24 16:13:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 16:13:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:13:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:13:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:13:48,956 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:13:48,956 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 16:13:48,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:13:48 BoogieIcfgContainer [2020-09-24 16:13:48,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:13:48,976 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:13:48,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:13:48,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:13:48,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:13:45" (1/3) ... [2020-09-24 16:13:48,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd0cf35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:13:48, skipping insertion in model container [2020-09-24 16:13:48,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:13:46" (2/3) ... [2020-09-24 16:13:48,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd0cf35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:13:48, skipping insertion in model container [2020-09-24 16:13:48,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:13:48" (3/3) ... [2020-09-24 16:13:48,988 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-24 16:13:49,001 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:13:49,013 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:13:49,036 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:13:49,070 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:13:49,070 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:13:49,070 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:13:49,070 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:13:49,070 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:13:49,071 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:13:49,071 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:13:49,071 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:13:49,111 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states. [2020-09-24 16:13:49,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2020-09-24 16:13:49,151 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:13:49,153 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:13:49,154 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:13:49,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:13:49,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1632941541, now seen corresponding path program 1 times [2020-09-24 16:13:49,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:13:49,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853442735] [2020-09-24 16:13:49,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:13:49,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:13:49,803 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:13:49,803 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:13:49,804 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:13:49,804 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:13:49,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 456 [2020-09-24 16:13:49,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:13:49,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 16:13:49,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:13:49,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:13:49,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 200 [2020-09-24 16:13:49,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-09-24 16:13:49,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:13:50,486 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-09-24 16:13:50,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:13:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:13:50,522 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:13:50,523 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:13:50,523 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:13:50,523 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:13:50,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 16:13:50,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:13:50,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:13:50,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:13:50,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:13:50,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:13:50,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:13:50,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:13:50,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:13:50,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853442735] [2020-09-24 16:13:50,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:13:50,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:13:50,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4448373] [2020-09-24 16:13:50,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:13:50,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:13:50,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:13:50,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:13:50,867 INFO L87 Difference]: Start difference. First operand 903 states. Second operand 4 states. [2020-09-24 16:13:54,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:13:54,600 INFO L93 Difference]: Finished difference Result 1657 states and 2169 transitions. [2020-09-24 16:13:54,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 16:13:54,602 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 449 [2020-09-24 16:13:54,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:13:54,642 INFO L225 Difference]: With dead ends: 1657 [2020-09-24 16:13:54,642 INFO L226 Difference]: Without dead ends: 1241 [2020-09-24 16:13:54,656 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 [2020-09-24 16:13:54,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2020-09-24 16:13:54,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1234. [2020-09-24 16:13:54,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1234 states. [2020-09-24 16:13:54,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1513 transitions. [2020-09-24 16:13:54,804 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1513 transitions. Word has length 449 [2020-09-24 16:13:54,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:13:54,806 INFO L479 AbstractCegarLoop]: Abstraction has 1234 states and 1513 transitions. [2020-09-24 16:13:54,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:13:54,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1513 transitions. [2020-09-24 16:13:54,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2020-09-24 16:13:54,819 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:13:54,819 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:13:54,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:13:54,820 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:13:54,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:13:54,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1248222459, now seen corresponding path program 1 times [2020-09-24 16:13:54,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:13:54,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782325296] [2020-09-24 16:13:54,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:13:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:13:54,952 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:13:54,952 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:13:54,953 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:13:54,953 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:13:54,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 456 [2020-09-24 16:13:54,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:13:54,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:13:54,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:13:54,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:13:54,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 201 [2020-09-24 16:13:54,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-09-24 16:13:54,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:13:55,407 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-09-24 16:13:55,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:13:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:13:55,422 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:13:55,423 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:13:55,423 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:13:55,423 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:13:55,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 16:13:55,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:13:55,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:13:55,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:13:55,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:13:55,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:13:55,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:13:55,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:13:55,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:13:55,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782325296] [2020-09-24 16:13:55,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:13:55,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:13:55,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597215176] [2020-09-24 16:13:55,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:13:55,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:13:55,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:13:55,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:13:55,704 INFO L87 Difference]: Start difference. First operand 1234 states and 1513 transitions. Second operand 4 states. [2020-09-24 16:13:58,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:13:58,536 INFO L93 Difference]: Finished difference Result 2498 states and 3152 transitions. [2020-09-24 16:13:58,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 16:13:58,537 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 449 [2020-09-24 16:13:58,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:13:58,553 INFO L225 Difference]: With dead ends: 2498 [2020-09-24 16:13:58,553 INFO L226 Difference]: Without dead ends: 2052 [2020-09-24 16:13:58,558 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 [2020-09-24 16:13:58,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2052 states. [2020-09-24 16:13:58,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2052 to 2040. [2020-09-24 16:13:58,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2040 states. [2020-09-24 16:13:58,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2040 states to 2040 states and 2543 transitions. [2020-09-24 16:13:58,668 INFO L78 Accepts]: Start accepts. Automaton has 2040 states and 2543 transitions. Word has length 449 [2020-09-24 16:13:58,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:13:58,670 INFO L479 AbstractCegarLoop]: Abstraction has 2040 states and 2543 transitions. [2020-09-24 16:13:58,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:13:58,671 INFO L276 IsEmpty]: Start isEmpty. Operand 2040 states and 2543 transitions. [2020-09-24 16:13:58,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2020-09-24 16:13:58,680 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:13:58,681 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:13:58,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:13:58,682 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:13:58,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:13:58,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1103013733, now seen corresponding path program 1 times [2020-09-24 16:13:58,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:13:58,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060159843] [2020-09-24 16:13:58,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:13:59,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:13:59,033 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:13:59,033 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:13:59,033 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:13:59,034 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:13:59,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 456 [2020-09-24 16:13:59,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:13:59,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 16:13:59,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:13:59,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 16:13:59,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 167 [2020-09-24 16:13:59,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-24 16:13:59,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:13:59,458 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-09-24 16:13:59,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:13:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:13:59,469 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:13:59,469 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:13:59,469 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:13:59,470 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:13:59,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 16:13:59,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:13:59,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:13:59,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:13:59,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:13:59,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:13:59,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:13:59,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:13:59,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:13:59,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060159843] [2020-09-24 16:13:59,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:13:59,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 16:13:59,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382963440] [2020-09-24 16:13:59,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 16:13:59,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:13:59,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 16:13:59,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:13:59,685 INFO L87 Difference]: Start difference. First operand 2040 states and 2543 transitions. Second operand 5 states. [2020-09-24 16:14:04,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:14:04,344 INFO L93 Difference]: Finished difference Result 5648 states and 7106 transitions. [2020-09-24 16:14:04,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:14:04,345 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 449 [2020-09-24 16:14:04,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:14:04,372 INFO L225 Difference]: With dead ends: 5648 [2020-09-24 16:14:04,372 INFO L226 Difference]: Without dead ends: 3788 [2020-09-24 16:14:04,379 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 [2020-09-24 16:14:04,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3788 states. [2020-09-24 16:14:04,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3788 to 3786. [2020-09-24 16:14:04,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3786 states. [2020-09-24 16:14:04,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3786 states to 3786 states and 4727 transitions. [2020-09-24 16:14:04,555 INFO L78 Accepts]: Start accepts. Automaton has 3786 states and 4727 transitions. Word has length 449 [2020-09-24 16:14:04,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:14:04,556 INFO L479 AbstractCegarLoop]: Abstraction has 3786 states and 4727 transitions. [2020-09-24 16:14:04,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 16:14:04,556 INFO L276 IsEmpty]: Start isEmpty. Operand 3786 states and 4727 transitions. [2020-09-24 16:14:04,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2020-09-24 16:14:04,566 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:14:04,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:14:04,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 16:14:04,567 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:14:04,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:14:04,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1103174892, now seen corresponding path program 1 times [2020-09-24 16:14:04,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:14:04,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645939583] [2020-09-24 16:14:04,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:14:04,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:14:04,656 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:14:04,656 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:14:04,656 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:14:04,656 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:14:04,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 457 [2020-09-24 16:14:04,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:14:04,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:14:04,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:14:04,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:14:04,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-09-24 16:14:04,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:14:04,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:14:04,978 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-09-24 16:14:04,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:14:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:14:04,992 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:14:04,993 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:14:04,993 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:14:04,993 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:14:04,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 16:14:05,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:14:05,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:14:05,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:14:05,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:14:05,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:14:05,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:14:05,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 16:14:05,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:14:05,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645939583] [2020-09-24 16:14:05,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:14:05,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:14:05,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957697466] [2020-09-24 16:14:05,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:14:05,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:14:05,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:14:05,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:14:05,217 INFO L87 Difference]: Start difference. First operand 3786 states and 4727 transitions. Second operand 4 states. [2020-09-24 16:14:08,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:14:08,727 INFO L93 Difference]: Finished difference Result 10961 states and 13760 transitions. [2020-09-24 16:14:08,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 16:14:08,728 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 450 [2020-09-24 16:14:08,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:14:08,764 INFO L225 Difference]: With dead ends: 10961 [2020-09-24 16:14:08,765 INFO L226 Difference]: Without dead ends: 7389 [2020-09-24 16:14:08,774 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 [2020-09-24 16:14:08,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7389 states. [2020-09-24 16:14:08,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7389 to 3788. [2020-09-24 16:14:08,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3788 states. [2020-09-24 16:14:08,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3788 states to 3788 states and 4729 transitions. [2020-09-24 16:14:08,979 INFO L78 Accepts]: Start accepts. Automaton has 3788 states and 4729 transitions. Word has length 450 [2020-09-24 16:14:08,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:14:08,980 INFO L479 AbstractCegarLoop]: Abstraction has 3788 states and 4729 transitions. [2020-09-24 16:14:08,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:14:08,980 INFO L276 IsEmpty]: Start isEmpty. Operand 3788 states and 4729 transitions. [2020-09-24 16:14:08,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2020-09-24 16:14:08,989 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:14:08,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:14:08,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 16:14:08,990 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:14:08,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:14:08,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1245225403, now seen corresponding path program 1 times [2020-09-24 16:14:08,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:14:08,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435571736] [2020-09-24 16:14:08,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:14:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:14:09,194 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:14:09,196 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:14:09,196 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:14:09,196 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:14:09,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 458 [2020-09-24 16:14:09,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:14:09,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 16:14:09,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:14:09,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 16:14:09,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-09-24 16:14:09,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 16:14:09,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:14:09,642 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-09-24 16:14:09,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:14:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:14:09,650 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:14:09,650 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:14:09,650 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:14:09,650 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:14:09,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 16:14:09,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:14:09,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:14:09,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:14:09,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:14:09,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:14:09,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:14:09,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:14:09,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:14:09,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435571736] [2020-09-24 16:14:09,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:14:09,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 16:14:09,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897258811] [2020-09-24 16:14:09,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 16:14:09,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:14:09,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 16:14:09,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:14:09,881 INFO L87 Difference]: Start difference. First operand 3788 states and 4729 transitions. Second operand 5 states. [2020-09-24 16:14:14,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:14:14,663 INFO L93 Difference]: Finished difference Result 10724 states and 13437 transitions. [2020-09-24 16:14:14,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:14:14,664 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 451 [2020-09-24 16:14:14,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:14:14,693 INFO L225 Difference]: With dead ends: 10724 [2020-09-24 16:14:14,693 INFO L226 Difference]: Without dead ends: 7153 [2020-09-24 16:14:14,702 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 [2020-09-24 16:14:14,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7153 states. [2020-09-24 16:14:14,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7153 to 7151. [2020-09-24 16:14:14,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7151 states. [2020-09-24 16:14:14,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7151 states to 7151 states and 8903 transitions. [2020-09-24 16:14:14,951 INFO L78 Accepts]: Start accepts. Automaton has 7151 states and 8903 transitions. Word has length 451 [2020-09-24 16:14:14,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:14:14,952 INFO L479 AbstractCegarLoop]: Abstraction has 7151 states and 8903 transitions. [2020-09-24 16:14:14,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 16:14:14,952 INFO L276 IsEmpty]: Start isEmpty. Operand 7151 states and 8903 transitions. [2020-09-24 16:14:14,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2020-09-24 16:14:14,967 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:14:14,968 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:14:14,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 16:14:14,968 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:14:14,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:14:14,969 INFO L82 PathProgramCache]: Analyzing trace with hash 426038018, now seen corresponding path program 1 times [2020-09-24 16:14:14,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:14:14,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [408086179] [2020-09-24 16:14:14,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:14:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:14:15,055 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:14:15,056 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:14:15,056 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:14:15,059 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:14:15,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 459 [2020-09-24 16:14:15,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:14:15,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 16:14:15,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:14:15,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:14:15,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 182 [2020-09-24 16:14:15,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:14:15,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:14:15,410 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-09-24 16:14:15,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:14:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:14:15,419 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:14:15,420 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:14:15,420 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:14:15,420 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:14:15,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 16:14:15,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:14:15,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:14:15,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:14:15,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:14:15,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:14:15,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:14:15,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:14:15,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:14:15,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [408086179] [2020-09-24 16:14:15,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:14:15,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:14:15,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232239785] [2020-09-24 16:14:15,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:14:15,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:14:15,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:14:15,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:14:15,672 INFO L87 Difference]: Start difference. First operand 7151 states and 8903 transitions. Second operand 4 states. [2020-09-24 16:14:19,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:14:19,095 INFO L93 Difference]: Finished difference Result 20993 states and 26205 transitions. [2020-09-24 16:14:19,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 16:14:19,095 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 452 [2020-09-24 16:14:19,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:14:19,146 INFO L225 Difference]: With dead ends: 20993 [2020-09-24 16:14:19,146 INFO L226 Difference]: Without dead ends: 14079 [2020-09-24 16:14:19,162 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 [2020-09-24 16:14:19,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14079 states. [2020-09-24 16:14:19,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14079 to 7155. [2020-09-24 16:14:19,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7155 states. [2020-09-24 16:14:19,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7155 states to 7155 states and 8907 transitions. [2020-09-24 16:14:19,408 INFO L78 Accepts]: Start accepts. Automaton has 7155 states and 8907 transitions. Word has length 452 [2020-09-24 16:14:19,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:14:19,409 INFO L479 AbstractCegarLoop]: Abstraction has 7155 states and 8907 transitions. [2020-09-24 16:14:19,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:14:19,409 INFO L276 IsEmpty]: Start isEmpty. Operand 7155 states and 8907 transitions. [2020-09-24 16:14:19,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2020-09-24 16:14:19,421 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:14:19,421 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:14:19,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 16:14:19,422 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:14:19,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:14:19,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1804062791, now seen corresponding path program 1 times [2020-09-24 16:14:19,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:14:19,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024386285] [2020-09-24 16:14:19,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:14:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:14:19,561 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:14:19,561 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:14:19,561 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:14:19,561 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:14:19,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 460 [2020-09-24 16:14:19,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:14:19,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 16:14:19,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:14:19,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 16:14:19,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 171 [2020-09-24 16:14:19,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 16:14:19,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:14:19,955 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-09-24 16:14:19,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:14:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:14:19,963 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:14:19,963 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:14:19,963 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:14:19,963 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:14:19,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 16:14:19,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:14:19,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:14:19,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:14:19,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:14:19,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:14:19,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:14:19,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:14:20,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:14:20,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024386285] [2020-09-24 16:14:20,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:14:20,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 16:14:20,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930494332] [2020-09-24 16:14:20,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 16:14:20,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:14:20,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 16:14:20,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:14:20,225 INFO L87 Difference]: Start difference. First operand 7155 states and 8907 transitions. Second operand 5 states. [2020-09-24 16:14:24,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:14:24,988 INFO L93 Difference]: Finished difference Result 19130 states and 23824 transitions. [2020-09-24 16:14:24,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:14:24,989 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 453 [2020-09-24 16:14:24,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:14:25,012 INFO L225 Difference]: With dead ends: 19130 [2020-09-24 16:14:25,012 INFO L226 Difference]: Without dead ends: 12218 [2020-09-24 16:14:25,023 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 [2020-09-24 16:14:25,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12218 states. [2020-09-24 16:14:25,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12218 to 12216. [2020-09-24 16:14:25,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12216 states. [2020-09-24 16:14:25,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12216 states to 12216 states and 15102 transitions. [2020-09-24 16:14:25,310 INFO L78 Accepts]: Start accepts. Automaton has 12216 states and 15102 transitions. Word has length 453 [2020-09-24 16:14:25,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:14:25,311 INFO L479 AbstractCegarLoop]: Abstraction has 12216 states and 15102 transitions. [2020-09-24 16:14:25,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 16:14:25,311 INFO L276 IsEmpty]: Start isEmpty. Operand 12216 states and 15102 transitions. [2020-09-24 16:14:25,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2020-09-24 16:14:25,329 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:14:25,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:14:25,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 16:14:25,330 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:14:25,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:14:25,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1568550000, now seen corresponding path program 1 times [2020-09-24 16:14:25,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:14:25,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450525575] [2020-09-24 16:14:25,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:14:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:14:25,397 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:14:25,398 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:14:25,398 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:14:25,398 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:14:25,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 461 [2020-09-24 16:14:25,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:14:25,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:14:25,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:14:25,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:14:25,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-09-24 16:14:25,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:14:25,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:14:25,727 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-09-24 16:14:25,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:14:25,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:14:25,739 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:14:25,739 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:14:25,740 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:14:25,740 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:14:25,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 16:14:25,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:14:25,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:14:25,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:14:25,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:14:25,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:14:25,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:14:25,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:14:25,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:14:25,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450525575] [2020-09-24 16:14:25,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:14:25,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:14:25,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164825296] [2020-09-24 16:14:25,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:14:25,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:14:25,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:14:25,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:14:25,913 INFO L87 Difference]: Start difference. First operand 12216 states and 15102 transitions. Second operand 4 states. [2020-09-24 16:14:29,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:14:29,527 INFO L93 Difference]: Finished difference Result 35678 states and 44190 transitions. [2020-09-24 16:14:29,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 16:14:29,528 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 454 [2020-09-24 16:14:29,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:14:29,576 INFO L225 Difference]: With dead ends: 35678 [2020-09-24 16:14:29,577 INFO L226 Difference]: Without dead ends: 24113 [2020-09-24 16:14:29,601 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 [2020-09-24 16:14:29,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24113 states. [2020-09-24 16:14:30,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24113 to 12224. [2020-09-24 16:14:30,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12224 states. [2020-09-24 16:14:30,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12224 states to 12224 states and 15110 transitions. [2020-09-24 16:14:30,787 INFO L78 Accepts]: Start accepts. Automaton has 12224 states and 15110 transitions. Word has length 454 [2020-09-24 16:14:30,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:14:30,788 INFO L479 AbstractCegarLoop]: Abstraction has 12224 states and 15110 transitions. [2020-09-24 16:14:30,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:14:30,788 INFO L276 IsEmpty]: Start isEmpty. Operand 12224 states and 15110 transitions. [2020-09-24 16:14:30,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2020-09-24 16:14:30,804 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:14:30,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:14:30,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 16:14:30,805 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:14:30,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:14:30,806 INFO L82 PathProgramCache]: Analyzing trace with hash -288840865, now seen corresponding path program 1 times [2020-09-24 16:14:30,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:14:30,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066555445] [2020-09-24 16:14:30,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:14:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 16:14:30,959 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 16:14:30,959 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 16:14:30,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 16:14:31,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 04:14:31 BoogieIcfgContainer [2020-09-24 16:14:31,067 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 16:14:31,070 INFO L168 Benchmark]: Toolchain (without parser) took 45067.47 ms. Allocated memory was 146.8 MB in the beginning and 1.1 GB in the end (delta: 941.6 MB). Free memory was 101.6 MB in the beginning and 844.1 MB in the end (delta: -742.5 MB). Peak memory consumption was 199.2 MB. Max. memory is 7.1 GB. [2020-09-24 16:14:31,072 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 146.8 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 16:14:31,073 INFO L168 Benchmark]: CACSL2BoogieTranslator took 992.31 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 101.0 MB in the beginning and 168.4 MB in the end (delta: -67.4 MB). Peak memory consumption was 30.4 MB. Max. memory is 7.1 GB. [2020-09-24 16:14:31,074 INFO L168 Benchmark]: Boogie Preprocessor took 101.43 ms. Allocated memory is still 204.5 MB. Free memory was 168.4 MB in the beginning and 162.4 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 7.1 GB. [2020-09-24 16:14:31,078 INFO L168 Benchmark]: RCFGBuilder took 1873.06 ms. Allocated memory was 204.5 MB in the beginning and 238.0 MB in the end (delta: 33.6 MB). Free memory was 162.4 MB in the beginning and 112.9 MB in the end (delta: 49.4 MB). Peak memory consumption was 83.0 MB. Max. memory is 7.1 GB. [2020-09-24 16:14:31,080 INFO L168 Benchmark]: TraceAbstraction took 42090.64 ms. Allocated memory was 238.0 MB in the beginning and 1.1 GB in the end (delta: 850.4 MB). Free memory was 112.9 MB in the beginning and 844.1 MB in the end (delta: -731.2 MB). Peak memory consumption was 119.2 MB. Max. memory is 7.1 GB. [2020-09-24 16:14:31,089 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 146.8 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 992.31 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 101.0 MB in the beginning and 168.4 MB in the end (delta: -67.4 MB). Peak memory consumption was 30.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 101.43 ms. Allocated memory is still 204.5 MB. Free memory was 168.4 MB in the beginning and 162.4 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1873.06 ms. Allocated memory was 204.5 MB in the beginning and 238.0 MB in the end (delta: 33.6 MB). Free memory was 162.4 MB in the beginning and 112.9 MB in the end (delta: 49.4 MB). Peak memory consumption was 83.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 42090.64 ms. Allocated memory was 238.0 MB in the beginning and 1.1 GB in the end (delta: 850.4 MB). Free memory was 112.9 MB in the beginning and 844.1 MB in the end (delta: -731.2 MB). Peak memory consumption was 119.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 910]: 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_2426; [L76] int __return_2551; [L79] int main__c1; [L80] int main__i2; [L81] main__c1 = 0 [L82] ep12 = __VERIFIER_nondet_bool() [L83] ep13 = __VERIFIER_nondet_bool() [L84] ep21 = __VERIFIER_nondet_bool() [L85] ep23 = __VERIFIER_nondet_bool() [L86] ep31 = __VERIFIER_nondet_bool() [L87] ep32 = __VERIFIER_nondet_bool() [L88] id1 = __VERIFIER_nondet_char() [L89] r1 = __VERIFIER_nondet_uchar() [L90] st1 = __VERIFIER_nondet_char() [L91] nl1 = __VERIFIER_nondet_char() [L92] m1 = __VERIFIER_nondet_char() [L93] max1 = __VERIFIER_nondet_char() [L94] mode1 = __VERIFIER_nondet_bool() [L95] newmax1 = __VERIFIER_nondet_bool() [L96] id2 = __VERIFIER_nondet_char() [L97] r2 = __VERIFIER_nondet_uchar() [L98] st2 = __VERIFIER_nondet_char() [L99] nl2 = __VERIFIER_nondet_char() [L100] m2 = __VERIFIER_nondet_char() [L101] max2 = __VERIFIER_nondet_char() [L102] mode2 = __VERIFIER_nondet_bool() [L103] newmax2 = __VERIFIER_nondet_bool() [L104] id3 = __VERIFIER_nondet_char() [L105] r3 = __VERIFIER_nondet_uchar() [L106] st3 = __VERIFIER_nondet_char() [L107] nl3 = __VERIFIER_nondet_char() [L108] m3 = __VERIFIER_nondet_char() [L109] max3 = __VERIFIER_nondet_char() [L110] mode3 = __VERIFIER_nondet_bool() [L111] newmax3 = __VERIFIER_nondet_bool() [L113] _Bool init__r121; [L114] _Bool init__r131; [L115] _Bool init__r211; [L116] _Bool init__r231; [L117] _Bool init__r311; [L118] _Bool init__r321; [L119] _Bool init__r122; [L120] int init__tmp; [L121] _Bool init__r132; [L122] int init__tmp___0; [L123] _Bool init__r212; [L124] int init__tmp___1; [L125] _Bool init__r232; [L126] int init__tmp___2; [L127] _Bool init__r312; [L128] int init__tmp___3; [L129] _Bool init__r322; [L130] int init__tmp___4; [L131] int init__tmp___5; [L132] init__r121 = ep12 [L133] init__r131 = ep13 [L134] init__r211 = ep21 [L135] init__r231 = ep23 [L136] init__r311 = ep31 [L137] init__r321 = ep32 [L138] COND FALSE !(!(init__r121 == 0)) [L2454] COND FALSE !(!(init__r131 == 0)) [L2470] init__tmp = 0 [L142] init__r122 = (_Bool)init__tmp [L143] COND FALSE !(!(init__r131 == 0)) [L2431] COND FALSE !(!(init__r121 == 0)) [L2447] init__tmp___0 = 0 [L147] init__r132 = (_Bool)init__tmp___0 [L148] COND FALSE !(!(init__r211 == 0)) [L2408] COND FALSE !(!(init__r231 == 0)) [L2424] init__tmp___1 = 0 [L152] init__r212 = (_Bool)init__tmp___1 [L153] COND FALSE !(!(init__r231 == 0)) [L2385] COND FALSE !(!(init__r211 == 0)) [L2401] init__tmp___2 = 0 [L157] init__r232 = (_Bool)init__tmp___2 [L158] COND FALSE !(!(init__r311 == 0)) [L2362] COND FALSE !(!(init__r321 == 0)) [L2378] init__tmp___3 = 0 [L162] init__r312 = (_Bool)init__tmp___3 [L163] COND FALSE !(!(init__r321 == 0)) [L2339] COND FALSE !(!(init__r311 == 0)) [L2355] init__tmp___4 = 0 [L167] init__r322 = (_Bool)init__tmp___4 [L168] COND TRUE ((int)id1) != ((int)id2) [L170] COND TRUE ((int)id1) != ((int)id3) [L172] COND TRUE ((int)id2) != ((int)id3) [L174] COND TRUE ((int)id1) >= 0 [L176] COND TRUE ((int)id2) >= 0 [L178] COND TRUE ((int)id3) >= 0 [L180] COND TRUE ((int)r1) == 0 [L182] COND TRUE ((int)r2) == 0 [L184] COND TRUE ((int)r3) == 0 [L186] COND TRUE ((int)max1) == ((int)id1) [L188] COND TRUE ((int)max2) == ((int)id2) [L190] COND TRUE ((int)max3) == ((int)id3) [L192] COND TRUE ((int)st1) == 0 [L194] COND TRUE ((int)st2) == 0 [L196] COND TRUE ((int)st3) == 0 [L198] COND TRUE ((int)nl1) == 0 [L200] COND TRUE ((int)nl2) == 0 [L202] COND TRUE ((int)nl3) == 0 [L204] COND TRUE ((int)mode1) == 0 [L206] COND TRUE ((int)mode2) == 0 [L208] COND TRUE ((int)mode3) == 0 [L210] COND TRUE !(newmax1 == 0) [L212] COND TRUE !(newmax2 == 0) [L214] COND TRUE !(newmax3 == 0) [L216] init__tmp___5 = 1 [L217] __return_1873 = init__tmp___5 [L218] main__i2 = __return_1873 [L219] COND TRUE main__i2 != 0 [L221] p12_old = nomsg [L222] p12_new = nomsg [L223] p13_old = nomsg [L224] p13_new = nomsg [L225] p21_old = nomsg [L226] p21_new = nomsg [L227] p23_old = nomsg [L228] p23_new = nomsg [L229] p31_old = nomsg [L230] p31_new = nomsg [L231] p32_old = nomsg [L232] p32_new = nomsg [L233] main__i2 = 0 [L235] _Bool node1__newmax; [L236] node1__newmax = 0 [L237] COND FALSE !(!(mode1 == 0)) [L243] COND TRUE ((int)r1) < 2 [L245] COND FALSE !(!(ep12 == 0)) [L258] COND FALSE !(!(ep13 == 0)) [L271] mode1 = 1 [L273] _Bool node2__newmax; [L274] node2__newmax = 0 [L275] COND FALSE !(!(mode2 == 0)) [L281] COND TRUE ((int)r2) < 2 [L283] COND FALSE !(!(ep21 == 0)) [L296] COND FALSE !(!(ep23 == 0)) [L309] mode2 = 1 [L311] _Bool node3__newmax; [L312] node3__newmax = 0 [L313] COND FALSE !(!(mode3 == 0)) [L319] COND TRUE ((int)r3) < 2 [L321] COND FALSE !(!(ep31 == 0)) [L334] COND FALSE !(!(ep32 == 0)) [L347] mode3 = 1 [L348] p12_old = p12_new [L349] p12_new = nomsg [L350] p13_old = p13_new [L351] p13_new = nomsg [L352] p21_old = p21_new [L353] p21_new = nomsg [L354] p23_old = p23_new [L355] p23_new = nomsg [L356] p31_old = p31_new [L357] p31_new = nomsg [L358] p32_old = p32_new [L359] p32_new = nomsg [L361] int check__tmp; [L362] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L364] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L366] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L368] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L370] COND FALSE !(((int)r1) >= 2) [L376] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L378] COND TRUE ((int)r1) < 2 [L380] COND FALSE !(((int)r1) >= 2) [L386] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L388] COND TRUE ((int)r1) < 2 [L390] check__tmp = 1 [L391] __return_2019 = check__tmp [L392] main__c1 = __return_2019 [L394] _Bool __tmp_1; [L395] __tmp_1 = main__c1 [L396] _Bool assert__arg; [L397] assert__arg = __tmp_1 [L398] COND FALSE !(assert__arg == 0) [L405] _Bool node1__newmax; [L406] node1__newmax = 0 [L407] COND TRUE !(mode1 == 0) [L409] COND FALSE !(r1 == 255) [L415] r1 = r1 + 1 [L416] COND FALSE !(!(ep21 == 0)) [L425] COND FALSE !(!(ep31 == 0)) [L434] newmax1 = node1__newmax [L435] COND FALSE !(((int)r1) == 2) [L441] mode1 = 0 [L443] _Bool node2__newmax; [L444] node2__newmax = 0 [L445] COND TRUE !(mode2 == 0) [L447] COND FALSE !(r2 == 255) [L453] r2 = r2 + 1 [L454] COND FALSE !(!(ep12 == 0)) [L463] COND FALSE !(!(ep32 == 0)) [L472] newmax2 = node2__newmax [L473] COND FALSE !(((int)r2) == 2) [L479] mode2 = 0 [L481] _Bool node3__newmax; [L482] node3__newmax = 0 [L483] COND TRUE !(mode3 == 0) [L485] COND FALSE !(r3 == 255) [L491] r3 = r3 + 1 [L492] COND FALSE !(!(ep13 == 0)) [L501] COND FALSE !(!(ep23 == 0)) [L510] newmax3 = node3__newmax [L511] COND FALSE !(((int)r3) == 2) [L517] mode3 = 0 [L518] p12_old = p12_new [L519] p12_new = nomsg [L520] p13_old = p13_new [L521] p13_new = nomsg [L522] p21_old = p21_new [L523] p21_new = nomsg [L524] p23_old = p23_new [L525] p23_new = nomsg [L526] p31_old = p31_new [L527] p31_new = nomsg [L528] p32_old = p32_new [L529] p32_new = nomsg [L531] int check__tmp; [L532] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L534] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L536] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L538] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L540] COND FALSE !(((int)r1) >= 2) [L546] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L548] COND TRUE ((int)r1) < 2 [L550] COND FALSE !(((int)r1) >= 2) [L556] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L558] COND TRUE ((int)r1) < 2 [L560] check__tmp = 1 [L561] __return_2152 = check__tmp [L562] main__c1 = __return_2152 [L564] _Bool __tmp_2; [L565] __tmp_2 = main__c1 [L566] _Bool assert__arg; [L567] assert__arg = __tmp_2 [L568] COND FALSE !(assert__arg == 0) [L575] _Bool node1__newmax; [L576] node1__newmax = 0 [L577] COND FALSE !(!(mode1 == 0)) [L583] COND TRUE ((int)r1) < 2 [L585] COND FALSE !(!(ep12 == 0)) [L598] COND FALSE !(!(ep13 == 0)) [L611] mode1 = 1 [L613] _Bool node2__newmax; [L614] node2__newmax = 0 [L615] COND FALSE !(!(mode2 == 0)) [L621] COND TRUE ((int)r2) < 2 [L623] COND FALSE !(!(ep21 == 0)) [L636] COND FALSE !(!(ep23 == 0)) [L649] mode2 = 1 [L651] _Bool node3__newmax; [L652] node3__newmax = 0 [L653] COND FALSE !(!(mode3 == 0)) [L659] COND TRUE ((int)r3) < 2 [L661] COND FALSE !(!(ep31 == 0)) [L674] COND FALSE !(!(ep32 == 0)) [L687] mode3 = 1 [L688] p12_old = p12_new [L689] p12_new = nomsg [L690] p13_old = p13_new [L691] p13_new = nomsg [L692] p21_old = p21_new [L693] p21_new = nomsg [L694] p23_old = p23_new [L695] p23_new = nomsg [L696] p31_old = p31_new [L697] p31_new = nomsg [L698] p32_old = p32_new [L699] p32_new = nomsg [L701] int check__tmp; [L702] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L704] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L706] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L708] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L710] COND FALSE !(((int)r1) >= 2) [L716] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L718] COND TRUE ((int)r1) < 2 [L720] COND FALSE !(((int)r1) >= 2) [L726] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L728] COND TRUE ((int)r1) < 2 [L730] check__tmp = 1 [L731] __return_2288 = check__tmp [L732] main__c1 = __return_2288 [L734] _Bool __tmp_3; [L735] __tmp_3 = main__c1 [L736] _Bool assert__arg; [L737] assert__arg = __tmp_3 [L738] COND FALSE !(assert__arg == 0) [L745] _Bool node1__newmax; [L746] node1__newmax = 0 [L747] COND TRUE !(mode1 == 0) [L749] COND FALSE !(r1 == 255) [L755] r1 = r1 + 1 [L756] COND FALSE !(!(ep21 == 0)) [L765] COND FALSE !(!(ep31 == 0)) [L774] newmax1 = node1__newmax [L775] COND TRUE ((int)r1) == 2 [L777] COND TRUE ((int)max1) == ((int)id1) [L779] st1 = 1 [L781] mode1 = 0 [L783] _Bool node2__newmax; [L784] node2__newmax = 0 [L785] COND TRUE !(mode2 == 0) [L787] COND FALSE !(r2 == 255) [L793] r2 = r2 + 1 [L794] COND FALSE !(!(ep12 == 0)) [L803] COND FALSE !(!(ep32 == 0)) [L812] newmax2 = node2__newmax [L813] COND TRUE ((int)r2) == 2 [L815] COND TRUE ((int)max2) == ((int)id2) [L817] st2 = 1 [L819] mode2 = 0 [L821] _Bool node3__newmax; [L822] node3__newmax = 0 [L823] COND TRUE !(mode3 == 0) [L825] COND FALSE !(r3 == 255) [L831] r3 = r3 + 1 [L832] COND FALSE !(!(ep13 == 0)) [L841] COND FALSE !(!(ep23 == 0)) [L850] newmax3 = node3__newmax [L851] COND TRUE ((int)r3) == 2 [L853] COND TRUE ((int)max3) == ((int)id3) [L855] st3 = 1 [L857] mode3 = 0 [L858] p12_old = p12_new [L859] p12_new = nomsg [L860] p13_old = p13_new [L861] p13_new = nomsg [L862] p21_old = p21_new [L863] p21_new = nomsg [L864] p23_old = p23_new [L865] p23_new = nomsg [L866] p31_old = p31_new [L867] p31_new = nomsg [L868] p32_old = p32_new [L869] p32_new = nomsg [L871] int check__tmp; [L872] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L1568] check__tmp = 0 [L900] __return_2426 = check__tmp [L901] main__c1 = __return_2426 [L904] _Bool __tmp_4; [L905] __tmp_4 = main__c1 [L906] _Bool assert__arg; [L907] assert__arg = __tmp_4 [L908] COND TRUE assert__arg == 0 [L910] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 908 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 41.9s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 31.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10102 SDtfs, 8392 SDslu, 7613 SDs, 0 SdLazy, 10492 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 24.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12224occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.5s AutomataMinimizationTime, 8 MinimizatonAttempts, 22439 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 4062 NumberOfCodeBlocks, 4062 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 3599 ConstructedInterpolants, 0 QuantifiedInterpolants, 3372395 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...