/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 02:22:44,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 02:22:44,449 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 02:22:44,461 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 02:22:44,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 02:22:44,462 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 02:22:44,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 02:22:44,465 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 02:22:44,467 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 02:22:44,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 02:22:44,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 02:22:44,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 02:22:44,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 02:22:44,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 02:22:44,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 02:22:44,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 02:22:44,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 02:22:44,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 02:22:44,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 02:22:44,478 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 02:22:44,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 02:22:44,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 02:22:44,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 02:22:44,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 02:22:44,485 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 02:22:44,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 02:22:44,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 02:22:44,489 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 02:22:44,489 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 02:22:44,490 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 02:22:44,491 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 02:22:44,491 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 02:22:44,491 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 02:22:44,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 02:22:44,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 02:22:44,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 02:22:44,494 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 02:22:44,508 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 02:22:44,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 02:22:44,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 02:22:44,510 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 02:22:44,510 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 02:22:44,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 02:22:44,511 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 02:22:44,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 02:22:44,511 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 02:22:44,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 02:22:44,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 02:22:44,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 02:22:44,512 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 02:22:44,512 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 02:22:44,512 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 02:22:44,512 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 02:22:44,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 02:22:44,513 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 02:22:44,513 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 02:22:44,513 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 02:22:44,513 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 02:22:44,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 02:22:44,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 02:22:44,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 02:22:44,514 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 02:22:44,514 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 02:22:44,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:22:44,514 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 02:22:44,515 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 02:22:44,515 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 -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 02:22:44,825 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 02:22:44,838 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 02:22:44,842 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 02:22:44,843 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 02:22:44,844 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 02:22:44,844 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-21 02:22:44,906 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/641de0eb6/19d700903b674dabb924890615a1fd4e/FLAG42c693e87 [2020-07-21 02:22:45,585 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 02:22:45,586 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-21 02:22:45,612 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/641de0eb6/19d700903b674dabb924890615a1fd4e/FLAG42c693e87 [2020-07-21 02:22:45,729 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/641de0eb6/19d700903b674dabb924890615a1fd4e [2020-07-21 02:22:45,737 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 02:22:45,740 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 02:22:45,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 02:22:45,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 02:22:45,745 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 02:22:45,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:22:45" (1/1) ... [2020-07-21 02:22:45,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22bae889 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:22:45, skipping insertion in model container [2020-07-21 02:22:45,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:22:45" (1/1) ... [2020-07-21 02:22:45,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 02:22:45,927 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 02:22:47,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 02:22:47,373 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 02:22:48,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 02:22:48,393 INFO L208 MainTranslator]: Completed translation [2020-07-21 02:22:48,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:22:48 WrapperNode [2020-07-21 02:22:48,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 02:22:48,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 02:22:48,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 02:22:48,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 02:22:48,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:22:48" (1/1) ... [2020-07-21 02:22:48,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:22:48" (1/1) ... [2020-07-21 02:22:48,440 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:22:48" (1/1) ... [2020-07-21 02:22:48,441 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:22:48" (1/1) ... [2020-07-21 02:22:48,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:22:48" (1/1) ... [2020-07-21 02:22:48,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:22:48" (1/1) ... [2020-07-21 02:22:48,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:22:48" (1/1) ... [2020-07-21 02:22:48,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 02:22:48,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 02:22:48,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 02:22:48,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 02:22:48,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:22:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-21 02:22:48,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 02:22:48,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 02:22:48,688 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 02:22:48,689 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 02:22:48,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 02:22:48,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-21 02:22:48,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-07-21 02:22:48,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-21 02:22:48,691 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-07-21 02:22:48,691 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 02:22:48,692 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 02:22:48,692 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-07-21 02:22:48,692 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-07-21 02:22:48,692 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-07-21 02:22:48,692 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-07-21 02:22:48,693 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-07-21 02:22:48,693 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-07-21 02:22:48,694 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-07-21 02:22:48,694 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-21 02:22:48,694 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 02:22:48,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 02:22:48,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 02:22:51,710 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 02:22:51,710 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 02:22:51,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:22:51 BoogieIcfgContainer [2020-07-21 02:22:51,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 02:22:51,721 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 02:22:51,721 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 02:22:51,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 02:22:51,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:22:45" (1/3) ... [2020-07-21 02:22:51,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62210f6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:22:51, skipping insertion in model container [2020-07-21 02:22:51,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:22:48" (2/3) ... [2020-07-21 02:22:51,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62210f6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:22:51, skipping insertion in model container [2020-07-21 02:22:51,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:22:51" (3/3) ... [2020-07-21 02:22:51,728 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-21 02:22:51,738 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 02:22:51,747 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-07-21 02:22:51,761 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-07-21 02:22:51,789 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 02:22:51,789 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 02:22:51,790 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 02:22:51,790 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 02:22:51,790 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 02:22:51,790 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 02:22:51,790 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 02:22:51,791 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 02:22:51,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states. [2020-07-21 02:22:51,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-07-21 02:22:51,860 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:22:51,861 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] [2020-07-21 02:22:51,862 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:22:51,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:22:51,869 INFO L82 PathProgramCache]: Analyzing trace with hash -179235525, now seen corresponding path program 1 times [2020-07-21 02:22:51,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:22:51,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085199786] [2020-07-21 02:22:51,877 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:22:52,395 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 02:22:52,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:22:52,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 1588 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 02:22:52,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:22:52,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:22:52,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:22:52,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085199786] [2020-07-21 02:22:52,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:22:52,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 02:22:52,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025931274] [2020-07-21 02:22:52,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 02:22:52,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:22:52,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 02:22:52,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 02:22:52,674 INFO L87 Difference]: Start difference. First operand 1016 states. Second operand 4 states. [2020-07-21 02:22:53,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:22:53,051 INFO L93 Difference]: Finished difference Result 2994 states and 5361 transitions. [2020-07-21 02:22:53,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 02:22:53,054 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 324 [2020-07-21 02:22:53,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:22:53,082 INFO L225 Difference]: With dead ends: 2994 [2020-07-21 02:22:53,082 INFO L226 Difference]: Without dead ends: 1983 [2020-07-21 02:22:53,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 02:22:53,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2020-07-21 02:22:53,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1886. [2020-07-21 02:22:53,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1886 states. [2020-07-21 02:22:53,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 2875 transitions. [2020-07-21 02:22:53,252 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 2875 transitions. Word has length 324 [2020-07-21 02:22:53,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:22:53,255 INFO L479 AbstractCegarLoop]: Abstraction has 1886 states and 2875 transitions. [2020-07-21 02:22:53,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 02:22:53,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 2875 transitions. [2020-07-21 02:22:53,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-07-21 02:22:53,269 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:22:53,270 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] [2020-07-21 02:22:53,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:22:53,484 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:22:53,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:22:53,485 INFO L82 PathProgramCache]: Analyzing trace with hash 2062413201, now seen corresponding path program 1 times [2020-07-21 02:22:53,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:22:53,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1923932896] [2020-07-21 02:22:53,486 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:22:53,789 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 02:22:53,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:22:53,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 1315 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 02:22:53,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:22:53,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:22:53,907 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:22:53,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1923932896] [2020-07-21 02:22:53,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:22:53,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:22:53,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144007737] [2020-07-21 02:22:53,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:22:53,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:22:53,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:22:53,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:22:53,917 INFO L87 Difference]: Start difference. First operand 1886 states and 2875 transitions. Second operand 3 states. [2020-07-21 02:22:54,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:22:54,141 INFO L93 Difference]: Finished difference Result 5617 states and 8561 transitions. [2020-07-21 02:22:54,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:22:54,143 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 326 [2020-07-21 02:22:54,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:22:54,163 INFO L225 Difference]: With dead ends: 5617 [2020-07-21 02:22:54,164 INFO L226 Difference]: Without dead ends: 3754 [2020-07-21 02:22:54,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:22:54,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3754 states. [2020-07-21 02:22:54,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3754 to 1897. [2020-07-21 02:22:54,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1897 states. [2020-07-21 02:22:54,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1897 states to 1897 states and 2891 transitions. [2020-07-21 02:22:54,277 INFO L78 Accepts]: Start accepts. Automaton has 1897 states and 2891 transitions. Word has length 326 [2020-07-21 02:22:54,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:22:54,277 INFO L479 AbstractCegarLoop]: Abstraction has 1897 states and 2891 transitions. [2020-07-21 02:22:54,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:22:54,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1897 states and 2891 transitions. [2020-07-21 02:22:54,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-07-21 02:22:54,286 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:22:54,287 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] [2020-07-21 02:22:54,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:22:54,500 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:22:54,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:22:54,501 INFO L82 PathProgramCache]: Analyzing trace with hash 2015397068, now seen corresponding path program 1 times [2020-07-21 02:22:54,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:22:54,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909153276] [2020-07-21 02:22:54,502 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:22:54,809 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 02:22:54,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:22:54,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 1591 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 02:22:54,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:22:54,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:22:54,943 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:22:54,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909153276] [2020-07-21 02:22:54,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:22:54,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:22:54,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880432886] [2020-07-21 02:22:54,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:22:54,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:22:54,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:22:54,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:22:54,947 INFO L87 Difference]: Start difference. First operand 1897 states and 2891 transitions. Second operand 3 states. [2020-07-21 02:22:55,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:22:55,210 INFO L93 Difference]: Finished difference Result 5450 states and 8261 transitions. [2020-07-21 02:22:55,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:22:55,211 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 326 [2020-07-21 02:22:55,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:22:55,230 INFO L225 Difference]: With dead ends: 5450 [2020-07-21 02:22:55,230 INFO L226 Difference]: Without dead ends: 3704 [2020-07-21 02:22:55,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:22:55,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3704 states. [2020-07-21 02:22:55,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3704 to 3609. [2020-07-21 02:22:55,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3609 states. [2020-07-21 02:22:55,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3609 states to 3609 states and 5493 transitions. [2020-07-21 02:22:55,375 INFO L78 Accepts]: Start accepts. Automaton has 3609 states and 5493 transitions. Word has length 326 [2020-07-21 02:22:55,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:22:55,377 INFO L479 AbstractCegarLoop]: Abstraction has 3609 states and 5493 transitions. [2020-07-21 02:22:55,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:22:55,378 INFO L276 IsEmpty]: Start isEmpty. Operand 3609 states and 5493 transitions. [2020-07-21 02:22:55,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-21 02:22:55,388 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:22:55,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:22:55,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:22:55,604 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:22:55,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:22:55,605 INFO L82 PathProgramCache]: Analyzing trace with hash -31255730, now seen corresponding path program 1 times [2020-07-21 02:22:55,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:22:55,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594089235] [2020-07-21 02:22:55,607 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:22:55,880 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 02:22:55,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:22:55,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 1315 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 02:22:55,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:22:55,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:22:55,966 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:22:55,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594089235] [2020-07-21 02:22:55,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:22:55,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:22:55,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205771494] [2020-07-21 02:22:55,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:22:55,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:22:55,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:22:55,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:22:55,969 INFO L87 Difference]: Start difference. First operand 3609 states and 5493 transitions. Second operand 3 states. [2020-07-21 02:22:56,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:22:56,220 INFO L93 Difference]: Finished difference Result 10732 states and 16325 transitions. [2020-07-21 02:22:56,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:22:56,221 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 327 [2020-07-21 02:22:56,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:22:56,259 INFO L225 Difference]: With dead ends: 10732 [2020-07-21 02:22:56,260 INFO L226 Difference]: Without dead ends: 7173 [2020-07-21 02:22:56,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:22:56,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7173 states. [2020-07-21 02:22:56,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7173 to 3625. [2020-07-21 02:22:56,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3625 states. [2020-07-21 02:22:56,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3625 states to 3625 states and 5512 transitions. [2020-07-21 02:22:56,500 INFO L78 Accepts]: Start accepts. Automaton has 3625 states and 5512 transitions. Word has length 327 [2020-07-21 02:22:56,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:22:56,500 INFO L479 AbstractCegarLoop]: Abstraction has 3625 states and 5512 transitions. [2020-07-21 02:22:56,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:22:56,501 INFO L276 IsEmpty]: Start isEmpty. Operand 3625 states and 5512 transitions. [2020-07-21 02:22:56,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-07-21 02:22:56,511 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:22:56,511 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] [2020-07-21 02:22:56,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:22:56,726 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:22:56,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:22:56,727 INFO L82 PathProgramCache]: Analyzing trace with hash 986560295, now seen corresponding path program 1 times [2020-07-21 02:22:56,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:22:56,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151572938] [2020-07-21 02:22:56,728 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:22:57,001 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 02:22:57,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:22:57,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 1314 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 02:22:57,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:22:57,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:22:57,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:22:57,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151572938] [2020-07-21 02:22:57,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:22:57,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 02:22:57,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805074853] [2020-07-21 02:22:57,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 02:22:57,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:22:57,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 02:22:57,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 02:22:57,070 INFO L87 Difference]: Start difference. First operand 3625 states and 5512 transitions. Second operand 4 states. [2020-07-21 02:22:57,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:22:57,348 INFO L93 Difference]: Finished difference Result 8029 states and 12208 transitions. [2020-07-21 02:22:57,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 02:22:57,348 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 328 [2020-07-21 02:22:57,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:22:57,367 INFO L225 Difference]: With dead ends: 8029 [2020-07-21 02:22:57,368 INFO L226 Difference]: Without dead ends: 4106 [2020-07-21 02:22:57,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 02:22:57,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4106 states. [2020-07-21 02:22:57,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4106 to 4011. [2020-07-21 02:22:57,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4011 states. [2020-07-21 02:22:57,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4011 states to 4011 states and 6080 transitions. [2020-07-21 02:22:57,571 INFO L78 Accepts]: Start accepts. Automaton has 4011 states and 6080 transitions. Word has length 328 [2020-07-21 02:22:57,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:22:57,572 INFO L479 AbstractCegarLoop]: Abstraction has 4011 states and 6080 transitions. [2020-07-21 02:22:57,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 02:22:57,572 INFO L276 IsEmpty]: Start isEmpty. Operand 4011 states and 6080 transitions. [2020-07-21 02:22:57,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-07-21 02:22:57,583 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:22:57,584 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] [2020-07-21 02:22:57,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:22:57,798 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:22:57,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:22:57,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1806349788, now seen corresponding path program 1 times [2020-07-21 02:22:57,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:22:57,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692697194] [2020-07-21 02:22:57,799 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:22:58,093 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 02:22:58,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:22:58,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 1594 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 02:22:58,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:22:58,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:22:58,227 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:22:58,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692697194] [2020-07-21 02:22:58,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:22:58,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:22:58,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435063356] [2020-07-21 02:22:58,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:22:58,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:22:58,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:22:58,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:22:58,230 INFO L87 Difference]: Start difference. First operand 4011 states and 6080 transitions. Second operand 3 states. [2020-07-21 02:22:58,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:22:58,519 INFO L93 Difference]: Finished difference Result 11674 states and 17649 transitions. [2020-07-21 02:22:58,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:22:58,520 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 330 [2020-07-21 02:22:58,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:22:58,552 INFO L225 Difference]: With dead ends: 11674 [2020-07-21 02:22:58,552 INFO L226 Difference]: Without dead ends: 7891 [2020-07-21 02:22:58,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:22:58,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7891 states. [2020-07-21 02:22:58,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7891 to 7779. [2020-07-21 02:22:58,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7779 states. [2020-07-21 02:22:58,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7779 states to 7779 states and 11759 transitions. [2020-07-21 02:22:58,975 INFO L78 Accepts]: Start accepts. Automaton has 7779 states and 11759 transitions. Word has length 330 [2020-07-21 02:22:58,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:22:58,976 INFO L479 AbstractCegarLoop]: Abstraction has 7779 states and 11759 transitions. [2020-07-21 02:22:58,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:22:58,976 INFO L276 IsEmpty]: Start isEmpty. Operand 7779 states and 11759 transitions. [2020-07-21 02:22:58,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-07-21 02:22:58,998 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:22:58,999 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] [2020-07-21 02:22:59,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:22:59,213 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:22:59,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:22:59,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1902296543, now seen corresponding path program 1 times [2020-07-21 02:22:59,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:22:59,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398581236] [2020-07-21 02:22:59,214 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:22:59,501 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 02:22:59,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:22:59,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 1318 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 02:22:59,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:22:59,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:22:59,592 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:22:59,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398581236] [2020-07-21 02:22:59,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:22:59,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 02:22:59,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282203561] [2020-07-21 02:22:59,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 02:22:59,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:22:59,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 02:22:59,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 02:22:59,595 INFO L87 Difference]: Start difference. First operand 7779 states and 11759 transitions. Second operand 4 states. [2020-07-21 02:23:00,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:23:00,040 INFO L93 Difference]: Finished difference Result 22093 states and 33182 transitions. [2020-07-21 02:23:00,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 02:23:00,041 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 330 [2020-07-21 02:23:00,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:23:00,076 INFO L225 Difference]: With dead ends: 22093 [2020-07-21 02:23:00,076 INFO L226 Difference]: Without dead ends: 15099 [2020-07-21 02:23:00,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 02:23:00,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15099 states. [2020-07-21 02:23:00,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15099 to 8354. [2020-07-21 02:23:00,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8354 states. [2020-07-21 02:23:00,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8354 states to 8354 states and 12728 transitions. [2020-07-21 02:23:00,531 INFO L78 Accepts]: Start accepts. Automaton has 8354 states and 12728 transitions. Word has length 330 [2020-07-21 02:23:00,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:23:00,532 INFO L479 AbstractCegarLoop]: Abstraction has 8354 states and 12728 transitions. [2020-07-21 02:23:00,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 02:23:00,532 INFO L276 IsEmpty]: Start isEmpty. Operand 8354 states and 12728 transitions. [2020-07-21 02:23:00,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-07-21 02:23:00,549 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:23:00,549 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] [2020-07-21 02:23:00,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:23:00,763 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:23:00,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:23:00,763 INFO L82 PathProgramCache]: Analyzing trace with hash 770301040, now seen corresponding path program 1 times [2020-07-21 02:23:00,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:23:00,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410146791] [2020-07-21 02:23:00,765 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:23:01,059 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 02:23:01,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:23:01,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 1601 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 02:23:01,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:23:01,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:23:01,261 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:23:01,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410146791] [2020-07-21 02:23:01,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:23:01,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-21 02:23:01,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131657864] [2020-07-21 02:23:01,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 02:23:01,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:23:01,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 02:23:01,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-21 02:23:01,263 INFO L87 Difference]: Start difference. First operand 8354 states and 12728 transitions. Second operand 8 states. [2020-07-21 02:23:03,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:23:03,832 INFO L93 Difference]: Finished difference Result 18514 states and 28098 transitions. [2020-07-21 02:23:03,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-21 02:23:03,833 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 330 [2020-07-21 02:23:03,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:23:03,861 INFO L225 Difference]: With dead ends: 18514 [2020-07-21 02:23:03,862 INFO L226 Difference]: Without dead ends: 13342 [2020-07-21 02:23:03,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-07-21 02:23:03,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13342 states. [2020-07-21 02:23:04,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13342 to 10618. [2020-07-21 02:23:04,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10618 states. [2020-07-21 02:23:04,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10618 states to 10618 states and 16048 transitions. [2020-07-21 02:23:04,999 INFO L78 Accepts]: Start accepts. Automaton has 10618 states and 16048 transitions. Word has length 330 [2020-07-21 02:23:04,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:23:05,000 INFO L479 AbstractCegarLoop]: Abstraction has 10618 states and 16048 transitions. [2020-07-21 02:23:05,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 02:23:05,000 INFO L276 IsEmpty]: Start isEmpty. Operand 10618 states and 16048 transitions. [2020-07-21 02:23:05,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-07-21 02:23:05,017 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:23:05,017 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] [2020-07-21 02:23:05,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:23:05,232 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:23:05,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:23:05,233 INFO L82 PathProgramCache]: Analyzing trace with hash 2070422866, now seen corresponding path program 1 times [2020-07-21 02:23:05,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:23:05,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311336251] [2020-07-21 02:23:05,233 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:23:05,527 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 02:23:05,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:23:05,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 1597 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 02:23:05,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:23:05,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:23:05,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:23:05,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311336251] [2020-07-21 02:23:05,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:23:05,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:23:05,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889251454] [2020-07-21 02:23:05,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:23:05,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:23:05,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:23:05,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:23:05,613 INFO L87 Difference]: Start difference. First operand 10618 states and 16048 transitions. Second operand 3 states. [2020-07-21 02:23:06,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:23:06,059 INFO L93 Difference]: Finished difference Result 20460 states and 30827 transitions. [2020-07-21 02:23:06,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:23:06,059 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 330 [2020-07-21 02:23:06,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:23:06,079 INFO L225 Difference]: With dead ends: 20460 [2020-07-21 02:23:06,080 INFO L226 Difference]: Without dead ends: 12666 [2020-07-21 02:23:06,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:23:06,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12666 states. [2020-07-21 02:23:06,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12666 to 11312. [2020-07-21 02:23:06,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11312 states. [2020-07-21 02:23:06,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11312 states to 11312 states and 17190 transitions. [2020-07-21 02:23:06,672 INFO L78 Accepts]: Start accepts. Automaton has 11312 states and 17190 transitions. Word has length 330 [2020-07-21 02:23:06,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:23:06,673 INFO L479 AbstractCegarLoop]: Abstraction has 11312 states and 17190 transitions. [2020-07-21 02:23:06,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:23:06,673 INFO L276 IsEmpty]: Start isEmpty. Operand 11312 states and 17190 transitions. [2020-07-21 02:23:06,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-07-21 02:23:06,683 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:23:06,683 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] [2020-07-21 02:23:06,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:23:06,885 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:23:06,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:23:06,886 INFO L82 PathProgramCache]: Analyzing trace with hash -813925772, now seen corresponding path program 1 times [2020-07-21 02:23:06,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:23:06,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686777774] [2020-07-21 02:23:06,887 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:23:07,154 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 02:23:07,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:23:07,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 1318 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 02:23:07,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:23:07,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:23:07,217 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:23:07,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686777774] [2020-07-21 02:23:07,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:23:07,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:23:07,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576237518] [2020-07-21 02:23:07,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:23:07,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:23:07,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:23:07,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:23:07,219 INFO L87 Difference]: Start difference. First operand 11312 states and 17190 transitions. Second operand 3 states. [2020-07-21 02:23:07,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:23:07,929 INFO L93 Difference]: Finished difference Result 33365 states and 50646 transitions. [2020-07-21 02:23:07,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:23:07,929 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 330 [2020-07-21 02:23:07,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:23:07,955 INFO L225 Difference]: With dead ends: 33365 [2020-07-21 02:23:07,956 INFO L226 Difference]: Without dead ends: 22369 [2020-07-21 02:23:07,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:23:07,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22369 states. [2020-07-21 02:23:08,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22369 to 11409. [2020-07-21 02:23:08,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11409 states. [2020-07-21 02:23:08,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11409 states to 11409 states and 17315 transitions. [2020-07-21 02:23:08,484 INFO L78 Accepts]: Start accepts. Automaton has 11409 states and 17315 transitions. Word has length 330 [2020-07-21 02:23:08,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:23:08,484 INFO L479 AbstractCegarLoop]: Abstraction has 11409 states and 17315 transitions. [2020-07-21 02:23:08,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:23:08,485 INFO L276 IsEmpty]: Start isEmpty. Operand 11409 states and 17315 transitions. [2020-07-21 02:23:08,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-07-21 02:23:08,495 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:23:08,496 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] [2020-07-21 02:23:08,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:23:08,703 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:23:08,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:23:08,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1898246203, now seen corresponding path program 1 times [2020-07-21 02:23:08,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:23:08,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311023329] [2020-07-21 02:23:08,704 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:23:08,971 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 02:23:08,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:23:08,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 1318 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 02:23:08,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:23:09,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:23:09,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:23:09,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311023329] [2020-07-21 02:23:09,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:23:09,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:23:09,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665322231] [2020-07-21 02:23:09,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:23:09,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:23:09,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:23:09,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:23:09,067 INFO L87 Difference]: Start difference. First operand 11409 states and 17315 transitions. Second operand 3 states. [2020-07-21 02:23:09,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:23:09,806 INFO L93 Difference]: Finished difference Result 33422 states and 50694 transitions. [2020-07-21 02:23:09,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:23:09,807 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 331 [2020-07-21 02:23:09,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:23:09,829 INFO L225 Difference]: With dead ends: 33422 [2020-07-21 02:23:09,830 INFO L226 Difference]: Without dead ends: 22442 [2020-07-21 02:23:09,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:23:09,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22442 states. [2020-07-21 02:23:10,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22442 to 11510. [2020-07-21 02:23:10,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11510 states. [2020-07-21 02:23:10,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11510 states to 11510 states and 17430 transitions. [2020-07-21 02:23:10,354 INFO L78 Accepts]: Start accepts. Automaton has 11510 states and 17430 transitions. Word has length 331 [2020-07-21 02:23:10,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:23:10,354 INFO L479 AbstractCegarLoop]: Abstraction has 11510 states and 17430 transitions. [2020-07-21 02:23:10,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:23:10,354 INFO L276 IsEmpty]: Start isEmpty. Operand 11510 states and 17430 transitions. [2020-07-21 02:23:10,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-07-21 02:23:10,366 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:23:10,367 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] [2020-07-21 02:23:10,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:23:10,568 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:23:10,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:23:10,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1960266097, now seen corresponding path program 1 times [2020-07-21 02:23:10,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:23:10,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677176669] [2020-07-21 02:23:10,570 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:23:10,921 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 02:23:10,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:23:10,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 1319 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 02:23:10,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:23:11,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:23:11,006 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:23:11,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677176669] [2020-07-21 02:23:11,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:23:11,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 02:23:11,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965563801] [2020-07-21 02:23:11,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 02:23:11,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:23:11,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 02:23:11,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 02:23:11,009 INFO L87 Difference]: Start difference. First operand 11510 states and 17430 transitions. Second operand 4 states. [2020-07-21 02:23:11,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:23:11,819 INFO L93 Difference]: Finished difference Result 24943 states and 37622 transitions. [2020-07-21 02:23:11,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 02:23:11,820 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 332 [2020-07-21 02:23:11,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:23:11,833 INFO L225 Difference]: With dead ends: 24943 [2020-07-21 02:23:11,834 INFO L226 Difference]: Without dead ends: 13139 [2020-07-21 02:23:11,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 02:23:11,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13139 states. [2020-07-21 02:23:12,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13139 to 13019. [2020-07-21 02:23:12,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13019 states. [2020-07-21 02:23:12,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13019 states to 13019 states and 19557 transitions. [2020-07-21 02:23:12,369 INFO L78 Accepts]: Start accepts. Automaton has 13019 states and 19557 transitions. Word has length 332 [2020-07-21 02:23:12,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:23:12,369 INFO L479 AbstractCegarLoop]: Abstraction has 13019 states and 19557 transitions. [2020-07-21 02:23:12,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 02:23:12,370 INFO L276 IsEmpty]: Start isEmpty. Operand 13019 states and 19557 transitions. [2020-07-21 02:23:12,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-07-21 02:23:12,384 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:23:12,385 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] [2020-07-21 02:23:12,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:23:12,586 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:23:12,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:23:12,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1357216552, now seen corresponding path program 1 times [2020-07-21 02:23:12,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:23:12,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848527968] [2020-07-21 02:23:12,588 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:23:13,340 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 02:23:13,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:23:13,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 1321 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 02:23:13,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:23:13,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:23:13,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:23:13,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848527968] [2020-07-21 02:23:13,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:23:13,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:23:13,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365155035] [2020-07-21 02:23:13,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:23:13,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:23:13,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:23:13,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:23:13,411 INFO L87 Difference]: Start difference. First operand 13019 states and 19557 transitions. Second operand 3 states. [2020-07-21 02:23:14,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:23:14,176 INFO L93 Difference]: Finished difference Result 35989 states and 53849 transitions. [2020-07-21 02:23:14,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:23:14,182 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 332 [2020-07-21 02:23:14,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:23:14,211 INFO L225 Difference]: With dead ends: 35989 [2020-07-21 02:23:14,211 INFO L226 Difference]: Without dead ends: 23370 [2020-07-21 02:23:14,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:23:14,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23370 states. [2020-07-21 02:23:14,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23370 to 12589. [2020-07-21 02:23:14,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12589 states. [2020-07-21 02:23:14,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12589 states to 12589 states and 18879 transitions. [2020-07-21 02:23:14,844 INFO L78 Accepts]: Start accepts. Automaton has 12589 states and 18879 transitions. Word has length 332 [2020-07-21 02:23:14,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:23:14,844 INFO L479 AbstractCegarLoop]: Abstraction has 12589 states and 18879 transitions. [2020-07-21 02:23:14,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:23:14,844 INFO L276 IsEmpty]: Start isEmpty. Operand 12589 states and 18879 transitions. [2020-07-21 02:23:14,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-07-21 02:23:14,852 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:23:14,853 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] [2020-07-21 02:23:15,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:23:15,054 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:23:15,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:23:15,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1404232685, now seen corresponding path program 1 times [2020-07-21 02:23:15,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:23:15,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468263181] [2020-07-21 02:23:15,056 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:23:15,322 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 02:23:15,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:23:15,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 1323 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 02:23:15,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:23:15,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:23:15,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:23:15,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468263181] [2020-07-21 02:23:15,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:23:15,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 02:23:15,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168039534] [2020-07-21 02:23:15,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 02:23:15,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:23:15,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 02:23:15,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 02:23:15,396 INFO L87 Difference]: Start difference. First operand 12589 states and 18879 transitions. Second operand 4 states. [2020-07-21 02:23:16,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:23:16,294 INFO L93 Difference]: Finished difference Result 35413 states and 52850 transitions. [2020-07-21 02:23:16,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 02:23:16,295 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 332 [2020-07-21 02:23:16,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:23:16,320 INFO L225 Difference]: With dead ends: 35413 [2020-07-21 02:23:16,320 INFO L226 Difference]: Without dead ends: 24312 [2020-07-21 02:23:16,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 02:23:16,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24312 states. [2020-07-21 02:23:17,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24312 to 13696. [2020-07-21 02:23:17,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13696 states. [2020-07-21 02:23:17,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13696 states to 13696 states and 20588 transitions. [2020-07-21 02:23:17,101 INFO L78 Accepts]: Start accepts. Automaton has 13696 states and 20588 transitions. Word has length 332 [2020-07-21 02:23:17,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:23:17,101 INFO L479 AbstractCegarLoop]: Abstraction has 13696 states and 20588 transitions. [2020-07-21 02:23:17,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 02:23:17,102 INFO L276 IsEmpty]: Start isEmpty. Operand 13696 states and 20588 transitions. [2020-07-21 02:23:17,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-07-21 02:23:17,111 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:23:17,111 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] [2020-07-21 02:23:17,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:23:17,317 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:23:17,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:23:17,318 INFO L82 PathProgramCache]: Analyzing trace with hash -46203161, now seen corresponding path program 1 times [2020-07-21 02:23:17,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:23:17,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568764885] [2020-07-21 02:23:17,319 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:23:17,625 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 02:23:17,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:23:17,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 1596 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 02:23:17,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:23:17,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:23:17,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:23:17,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568764885] [2020-07-21 02:23:17,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:23:17,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:23:17,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663526725] [2020-07-21 02:23:17,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:23:17,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:23:17,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:23:17,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:23:17,696 INFO L87 Difference]: Start difference. First operand 13696 states and 20588 transitions. Second operand 3 states. [2020-07-21 02:23:18,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:23:18,482 INFO L93 Difference]: Finished difference Result 26778 states and 40397 transitions. [2020-07-21 02:23:18,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:23:18,483 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 332 [2020-07-21 02:23:18,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:23:18,503 INFO L225 Difference]: With dead ends: 26778 [2020-07-21 02:23:18,503 INFO L226 Difference]: Without dead ends: 18348 [2020-07-21 02:23:18,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:23:18,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18348 states. [2020-07-21 02:23:19,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18348 to 16256. [2020-07-21 02:23:19,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16256 states. [2020-07-21 02:23:19,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16256 states to 16256 states and 24616 transitions. [2020-07-21 02:23:19,321 INFO L78 Accepts]: Start accepts. Automaton has 16256 states and 24616 transitions. Word has length 332 [2020-07-21 02:23:19,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:23:19,321 INFO L479 AbstractCegarLoop]: Abstraction has 16256 states and 24616 transitions. [2020-07-21 02:23:19,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:23:19,322 INFO L276 IsEmpty]: Start isEmpty. Operand 16256 states and 24616 transitions. [2020-07-21 02:23:19,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-07-21 02:23:19,331 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:23:19,331 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] [2020-07-21 02:23:19,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:23:19,532 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:23:19,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:23:19,533 INFO L82 PathProgramCache]: Analyzing trace with hash 451176202, now seen corresponding path program 1 times [2020-07-21 02:23:19,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:23:19,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85241159] [2020-07-21 02:23:19,535 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:23:19,841 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 02:23:19,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:23:19,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 1592 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 02:23:19,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:23:19,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:23:19,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:23:19,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85241159] [2020-07-21 02:23:19,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:23:19,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:23:19,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087144450] [2020-07-21 02:23:19,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:23:19,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:23:19,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:23:19,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:23:19,947 INFO L87 Difference]: Start difference. First operand 16256 states and 24616 transitions. Second operand 3 states. [2020-07-21 02:23:21,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:23:21,441 INFO L93 Difference]: Finished difference Result 44070 states and 66368 transitions. [2020-07-21 02:23:21,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:23:21,442 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 332 [2020-07-21 02:23:21,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:23:21,470 INFO L225 Difference]: With dead ends: 44070 [2020-07-21 02:23:21,471 INFO L226 Difference]: Without dead ends: 30336 [2020-07-21 02:23:21,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:23:21,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30336 states. [2020-07-21 02:23:23,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30336 to 30243. [2020-07-21 02:23:23,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30243 states. [2020-07-21 02:23:23,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30243 states to 30243 states and 45427 transitions. [2020-07-21 02:23:23,709 INFO L78 Accepts]: Start accepts. Automaton has 30243 states and 45427 transitions. Word has length 332 [2020-07-21 02:23:23,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:23:23,710 INFO L479 AbstractCegarLoop]: Abstraction has 30243 states and 45427 transitions. [2020-07-21 02:23:23,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:23:23,710 INFO L276 IsEmpty]: Start isEmpty. Operand 30243 states and 45427 transitions. [2020-07-21 02:23:23,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-21 02:23:23,733 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:23:23,733 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] [2020-07-21 02:23:23,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:23:23,934 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:23:23,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:23:23,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1598768437, now seen corresponding path program 1 times [2020-07-21 02:23:23,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:23:23,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706289445] [2020-07-21 02:23:23,936 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:23:24,242 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 02:23:24,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:23:24,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 1605 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 02:23:24,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:23:24,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:23:24,344 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:23:24,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706289445] [2020-07-21 02:23:24,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:23:24,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 02:23:24,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120263437] [2020-07-21 02:23:24,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 02:23:24,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:23:24,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 02:23:24,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 02:23:24,347 INFO L87 Difference]: Start difference. First operand 30243 states and 45427 transitions. Second operand 4 states. [2020-07-21 02:23:27,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:23:27,182 INFO L93 Difference]: Finished difference Result 87193 states and 130723 transitions. [2020-07-21 02:23:27,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 02:23:27,183 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 333 [2020-07-21 02:23:27,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:23:27,239 INFO L225 Difference]: With dead ends: 87193 [2020-07-21 02:23:27,239 INFO L226 Difference]: Without dead ends: 57496 [2020-07-21 02:23:27,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 02:23:27,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57496 states. [2020-07-21 02:23:30,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57496 to 57422. [2020-07-21 02:23:30,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57422 states. [2020-07-21 02:23:30,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57422 states to 57422 states and 85556 transitions. [2020-07-21 02:23:30,123 INFO L78 Accepts]: Start accepts. Automaton has 57422 states and 85556 transitions. Word has length 333 [2020-07-21 02:23:30,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:23:30,124 INFO L479 AbstractCegarLoop]: Abstraction has 57422 states and 85556 transitions. [2020-07-21 02:23:30,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 02:23:30,124 INFO L276 IsEmpty]: Start isEmpty. Operand 57422 states and 85556 transitions. [2020-07-21 02:23:30,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-07-21 02:23:30,163 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:23:30,163 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] [2020-07-21 02:23:30,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:23:30,372 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:23:30,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:23:30,373 INFO L82 PathProgramCache]: Analyzing trace with hash 753269732, now seen corresponding path program 1 times [2020-07-21 02:23:30,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:23:30,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958018776] [2020-07-21 02:23:30,374 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:23:30,646 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 02:23:30,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:23:30,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 1329 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 02:23:30,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:23:30,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:23:30,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:23:30,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958018776] [2020-07-21 02:23:30,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:23:30,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:23:30,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612388714] [2020-07-21 02:23:30,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:23:30,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:23:30,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:23:30,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:23:30,729 INFO L87 Difference]: Start difference. First operand 57422 states and 85556 transitions. Second operand 3 states. [2020-07-21 02:23:36,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:23:36,666 INFO L93 Difference]: Finished difference Result 160787 states and 238586 transitions. [2020-07-21 02:23:36,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:23:36,666 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 334 [2020-07-21 02:23:36,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:23:36,783 INFO L225 Difference]: With dead ends: 160787 [2020-07-21 02:23:36,784 INFO L226 Difference]: Without dead ends: 108745 [2020-07-21 02:23:36,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:23:36,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108745 states. [2020-07-21 02:23:40,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108745 to 58125. [2020-07-21 02:23:40,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58125 states. [2020-07-21 02:23:40,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58125 states to 58125 states and 86323 transitions. [2020-07-21 02:23:40,146 INFO L78 Accepts]: Start accepts. Automaton has 58125 states and 86323 transitions. Word has length 334 [2020-07-21 02:23:40,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:23:40,146 INFO L479 AbstractCegarLoop]: Abstraction has 58125 states and 86323 transitions. [2020-07-21 02:23:40,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:23:40,146 INFO L276 IsEmpty]: Start isEmpty. Operand 58125 states and 86323 transitions. [2020-07-21 02:23:40,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-07-21 02:23:40,176 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:23:40,176 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] [2020-07-21 02:23:40,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:23:40,377 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:23:40,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:23:40,378 INFO L82 PathProgramCache]: Analyzing trace with hash 936914109, now seen corresponding path program 1 times [2020-07-21 02:23:40,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:23:40,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183247773] [2020-07-21 02:23:40,380 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:23:40,956 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 02:23:40,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:23:40,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 1604 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 02:23:40,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:23:41,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:23:41,083 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:23:41,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183247773] [2020-07-21 02:23:41,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:23:41,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:23:41,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286068544] [2020-07-21 02:23:41,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:23:41,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:23:41,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:23:41,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:23:41,087 INFO L87 Difference]: Start difference. First operand 58125 states and 86323 transitions. Second operand 3 states. [2020-07-21 02:23:47,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:23:47,789 INFO L93 Difference]: Finished difference Result 165353 states and 244905 transitions. [2020-07-21 02:23:47,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:23:47,790 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 335 [2020-07-21 02:23:47,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:23:47,907 INFO L225 Difference]: With dead ends: 165353 [2020-07-21 02:23:47,907 INFO L226 Difference]: Without dead ends: 112554 [2020-07-21 02:23:47,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:23:48,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112554 states. [2020-07-21 02:23:55,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112554 to 112467. [2020-07-21 02:23:55,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112467 states. [2020-07-21 02:23:55,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112467 states to 112467 states and 165615 transitions. [2020-07-21 02:23:55,856 INFO L78 Accepts]: Start accepts. Automaton has 112467 states and 165615 transitions. Word has length 335 [2020-07-21 02:23:55,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:23:55,857 INFO L479 AbstractCegarLoop]: Abstraction has 112467 states and 165615 transitions. [2020-07-21 02:23:55,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:23:55,857 INFO L276 IsEmpty]: Start isEmpty. Operand 112467 states and 165615 transitions. [2020-07-21 02:23:55,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-07-21 02:23:55,913 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:23:55,913 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] [2020-07-21 02:23:56,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:23:56,114 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:23:56,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:23:56,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1561727870, now seen corresponding path program 1 times [2020-07-21 02:23:56,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:23:56,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3689234] [2020-07-21 02:23:56,117 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:23:56,392 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 02:23:56,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:23:56,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 1329 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 02:23:56,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:23:56,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:23:56,451 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:23:56,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3689234] [2020-07-21 02:23:56,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:23:56,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 02:23:56,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528683320] [2020-07-21 02:23:56,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 02:23:56,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:23:56,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 02:23:56,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 02:23:56,452 INFO L87 Difference]: Start difference. First operand 112467 states and 165615 transitions. Second operand 4 states. [2020-07-21 02:24:09,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:24:09,476 INFO L93 Difference]: Finished difference Result 310363 states and 456286 transitions. [2020-07-21 02:24:09,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 02:24:09,476 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 336 [2020-07-21 02:24:09,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:24:09,750 INFO L225 Difference]: With dead ends: 310363 [2020-07-21 02:24:09,750 INFO L226 Difference]: Without dead ends: 208217 [2020-07-21 02:24:09,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 02:24:09,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208217 states. [2020-07-21 02:24:17,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208217 to 116522. [2020-07-21 02:24:17,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116522 states. [2020-07-21 02:24:17,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116522 states to 116522 states and 171930 transitions. [2020-07-21 02:24:17,328 INFO L78 Accepts]: Start accepts. Automaton has 116522 states and 171930 transitions. Word has length 336 [2020-07-21 02:24:17,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:24:17,329 INFO L479 AbstractCegarLoop]: Abstraction has 116522 states and 171930 transitions. [2020-07-21 02:24:17,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 02:24:17,329 INFO L276 IsEmpty]: Start isEmpty. Operand 116522 states and 171930 transitions. [2020-07-21 02:24:17,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-07-21 02:24:17,390 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:24:17,390 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] [2020-07-21 02:24:17,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:17,591 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:24:17,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:24:17,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1295780269, now seen corresponding path program 1 times [2020-07-21 02:24:17,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:24:17,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666824975] [2020-07-21 02:24:17,593 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:17,860 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 02:24:17,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:24:17,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 1332 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 02:24:17,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:24:17,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:24:17,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:24:17,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666824975] [2020-07-21 02:24:17,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:24:17,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 02:24:17,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780071895] [2020-07-21 02:24:17,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 02:24:17,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:24:17,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 02:24:17,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 02:24:17,928 INFO L87 Difference]: Start difference. First operand 116522 states and 171930 transitions. Second operand 4 states. [2020-07-21 02:24:26,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:24:26,778 INFO L93 Difference]: Finished difference Result 216396 states and 318498 transitions. [2020-07-21 02:24:26,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 02:24:26,779 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 336 [2020-07-21 02:24:26,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:24:26,913 INFO L225 Difference]: With dead ends: 216396 [2020-07-21 02:24:26,913 INFO L226 Difference]: Without dead ends: 110662 [2020-07-21 02:24:26,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 02:24:27,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110662 states. [2020-07-21 02:24:33,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110662 to 110262. [2020-07-21 02:24:33,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110262 states. [2020-07-21 02:24:33,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110262 states to 110262 states and 162647 transitions. [2020-07-21 02:24:33,854 INFO L78 Accepts]: Start accepts. Automaton has 110262 states and 162647 transitions. Word has length 336 [2020-07-21 02:24:33,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:24:33,854 INFO L479 AbstractCegarLoop]: Abstraction has 110262 states and 162647 transitions. [2020-07-21 02:24:33,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 02:24:33,854 INFO L276 IsEmpty]: Start isEmpty. Operand 110262 states and 162647 transitions. [2020-07-21 02:24:33,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-07-21 02:24:33,909 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:24:33,909 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] [2020-07-21 02:24:34,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:34,110 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:24:34,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:24:34,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1576957566, now seen corresponding path program 1 times [2020-07-21 02:24:34,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:24:34,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242873031] [2020-07-21 02:24:34,112 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:34,384 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 02:24:34,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:24:34,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 1318 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 02:24:34,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:24:34,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:24:34,459 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:24:34,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242873031] [2020-07-21 02:24:34,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:24:34,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 02:24:34,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138375299] [2020-07-21 02:24:34,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 02:24:34,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:24:34,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 02:24:34,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 02:24:34,461 INFO L87 Difference]: Start difference. First operand 110262 states and 162647 transitions. Second operand 4 states. [2020-07-21 02:24:43,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:24:43,837 INFO L93 Difference]: Finished difference Result 234329 states and 344596 transitions. [2020-07-21 02:24:43,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 02:24:43,839 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 337 [2020-07-21 02:24:43,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:24:43,964 INFO L225 Difference]: With dead ends: 234329 [2020-07-21 02:24:43,965 INFO L226 Difference]: Without dead ends: 118544 [2020-07-21 02:24:44,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 02:24:44,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118544 states. [2020-07-21 02:24:50,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118544 to 118282. [2020-07-21 02:24:50,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118282 states. [2020-07-21 02:24:50,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118282 states to 118282 states and 173093 transitions. [2020-07-21 02:24:50,968 INFO L78 Accepts]: Start accepts. Automaton has 118282 states and 173093 transitions. Word has length 337 [2020-07-21 02:24:50,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:24:50,968 INFO L479 AbstractCegarLoop]: Abstraction has 118282 states and 173093 transitions. [2020-07-21 02:24:50,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 02:24:50,968 INFO L276 IsEmpty]: Start isEmpty. Operand 118282 states and 173093 transitions. [2020-07-21 02:24:51,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-07-21 02:24:51,030 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:24:51,030 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] [2020-07-21 02:24:51,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:51,245 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:24:51,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:24:51,246 INFO L82 PathProgramCache]: Analyzing trace with hash -2102120971, now seen corresponding path program 1 times [2020-07-21 02:24:51,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:24:51,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079167860] [2020-07-21 02:24:51,246 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:51,542 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 02:24:51,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:24:51,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 1607 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 02:24:51,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:24:51,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:24:51,647 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:24:51,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079167860] [2020-07-21 02:24:51,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:24:51,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:24:51,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295059502] [2020-07-21 02:24:51,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:24:51,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:24:51,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:24:51,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:24:51,648 INFO L87 Difference]: Start difference. First operand 118282 states and 173093 transitions. Second operand 3 states. [2020-07-21 02:25:06,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:25:06,951 INFO L93 Difference]: Finished difference Result 319723 states and 465272 transitions. [2020-07-21 02:25:06,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:25:06,952 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 338 [2020-07-21 02:25:06,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:25:07,221 INFO L225 Difference]: With dead ends: 319723 [2020-07-21 02:25:07,221 INFO L226 Difference]: Without dead ends: 220647 [2020-07-21 02:25:07,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:25:07,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220647 states. [2020-07-21 02:25:25,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220647 to 219834. [2020-07-21 02:25:25,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219834 states. [2020-07-21 02:25:25,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219834 states to 219834 states and 319666 transitions. [2020-07-21 02:25:25,493 INFO L78 Accepts]: Start accepts. Automaton has 219834 states and 319666 transitions. Word has length 338 [2020-07-21 02:25:25,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:25:25,494 INFO L479 AbstractCegarLoop]: Abstraction has 219834 states and 319666 transitions. [2020-07-21 02:25:25,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:25:25,494 INFO L276 IsEmpty]: Start isEmpty. Operand 219834 states and 319666 transitions. [2020-07-21 02:25:25,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-07-21 02:25:25,601 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:25:25,601 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] [2020-07-21 02:25:25,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:25:25,802 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:25:25,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:25:25,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1988932227, now seen corresponding path program 1 times [2020-07-21 02:25:25,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:25:25,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750332560] [2020-07-21 02:25:25,804 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:25:26,072 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 02:25:26,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:25:26,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 1320 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 02:25:26,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:25:26,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:25:26,129 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:25:26,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1750332560] [2020-07-21 02:25:26,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:25:26,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:25:26,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022450610] [2020-07-21 02:25:26,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:25:26,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:25:26,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:25:26,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:25:26,131 INFO L87 Difference]: Start difference. First operand 219834 states and 319666 transitions. Second operand 3 states. [2020-07-21 02:25:46,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:25:46,333 INFO L93 Difference]: Finished difference Result 366159 states and 532020 transitions. [2020-07-21 02:25:46,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:25:46,334 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 340 [2020-07-21 02:25:46,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:25:46,634 INFO L225 Difference]: With dead ends: 366159 [2020-07-21 02:25:46,634 INFO L226 Difference]: Without dead ends: 290011 [2020-07-21 02:25:46,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:25:46,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290011 states. [2020-07-21 02:26:02,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290011 to 219834. [2020-07-21 02:26:02,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219834 states. [2020-07-21 02:26:02,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219834 states to 219834 states and 319625 transitions. [2020-07-21 02:26:02,996 INFO L78 Accepts]: Start accepts. Automaton has 219834 states and 319625 transitions. Word has length 340 [2020-07-21 02:26:02,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:26:02,996 INFO L479 AbstractCegarLoop]: Abstraction has 219834 states and 319625 transitions. [2020-07-21 02:26:02,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:26:02,997 INFO L276 IsEmpty]: Start isEmpty. Operand 219834 states and 319625 transitions. [2020-07-21 02:26:03,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-07-21 02:26:03,119 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:26:03,119 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] [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (25)] Forcibly destroying the process [2020-07-21 02:26:03,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:26:03,762 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:26:03,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:26:03,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1228349374, now seen corresponding path program 1 times [2020-07-21 02:26:03,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:26:03,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057479465] [2020-07-21 02:26:03,763 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:26:04,030 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 02:26:04,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:26:04,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 1333 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 02:26:04,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:26:04,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:26:04,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:26:04,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057479465] [2020-07-21 02:26:04,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:26:04,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:26:04,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844478617] [2020-07-21 02:26:04,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:26:04,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:26:04,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:26:04,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:26:04,102 INFO L87 Difference]: Start difference. First operand 219834 states and 319625 transitions. Second operand 3 states. [2020-07-21 02:26:29,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:26:29,359 INFO L93 Difference]: Finished difference Result 561168 states and 814364 transitions. [2020-07-21 02:26:29,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:26:29,359 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 340 [2020-07-21 02:26:29,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:26:29,757 INFO L225 Difference]: With dead ends: 561168 [2020-07-21 02:26:29,757 INFO L226 Difference]: Without dead ends: 357273 [2020-07-21 02:26:29,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:26:30,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357273 states. [2020-07-21 02:26:51,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357273 to 220400. [2020-07-21 02:26:51,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220400 states. [2020-07-21 02:26:51,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220400 states to 220400 states and 319838 transitions. [2020-07-21 02:26:51,474 INFO L78 Accepts]: Start accepts. Automaton has 220400 states and 319838 transitions. Word has length 340 [2020-07-21 02:26:51,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:26:51,474 INFO L479 AbstractCegarLoop]: Abstraction has 220400 states and 319838 transitions. [2020-07-21 02:26:51,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:26:51,474 INFO L276 IsEmpty]: Start isEmpty. Operand 220400 states and 319838 transitions. [2020-07-21 02:26:51,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-07-21 02:26:51,599 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:26:51,599 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] [2020-07-21 02:26:51,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:26:51,800 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:26:51,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:26:51,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1214280482, now seen corresponding path program 1 times [2020-07-21 02:26:51,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:26:51,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506744237] [2020-07-21 02:26:51,802 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:26:52,109 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 02:26:52,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:26:52,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 1608 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 02:26:52,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:26:52,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:26:52,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:26:52,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506744237] [2020-07-21 02:26:52,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:26:52,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:26:52,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554987217] [2020-07-21 02:26:52,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:26:52,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:26:52,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:26:52,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:26:52,206 INFO L87 Difference]: Start difference. First operand 220400 states and 319838 transitions. Second operand 3 states. [2020-07-21 02:27:22,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:27:22,905 INFO L93 Difference]: Finished difference Result 606739 states and 879237 transitions. [2020-07-21 02:27:22,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:27:22,906 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 341 [2020-07-21 02:27:22,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:27:23,388 INFO L225 Difference]: With dead ends: 606739 [2020-07-21 02:27:23,388 INFO L226 Difference]: Without dead ends: 416911 [2020-07-21 02:27:23,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:27:23,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416911 states. [2020-07-21 02:27:59,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416911 to 416853. [2020-07-21 02:27:59,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416853 states. [2020-07-21 02:28:00,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416853 states to 416853 states and 600505 transitions. [2020-07-21 02:28:00,423 INFO L78 Accepts]: Start accepts. Automaton has 416853 states and 600505 transitions. Word has length 341 [2020-07-21 02:28:00,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:28:00,423 INFO L479 AbstractCegarLoop]: Abstraction has 416853 states and 600505 transitions. [2020-07-21 02:28:00,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:28:00,423 INFO L276 IsEmpty]: Start isEmpty. Operand 416853 states and 600505 transitions. [2020-07-21 02:28:00,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-07-21 02:28:00,642 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:28:00,643 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] [2020-07-21 02:28:00,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:28:00,844 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:28:00,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:28:00,844 INFO L82 PathProgramCache]: Analyzing trace with hash 2041433819, now seen corresponding path program 1 times [2020-07-21 02:28:00,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:28:00,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346210161] [2020-07-21 02:28:00,845 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:28:01,152 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 02:28:01,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:28:01,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 1617 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 02:28:01,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:28:01,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:28:01,227 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:28:01,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346210161] [2020-07-21 02:28:01,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:28:01,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:28:01,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318599925] [2020-07-21 02:28:01,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:28:01,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:28:01,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:28:01,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:28:01,229 INFO L87 Difference]: Start difference. First operand 416853 states and 600505 transitions. Second operand 3 states. [2020-07-21 02:29:00,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:29:00,493 INFO L93 Difference]: Finished difference Result 1051135 states and 1521509 transitions. [2020-07-21 02:29:00,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:29:00,494 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 342 [2020-07-21 02:29:00,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:29:01,515 INFO L225 Difference]: With dead ends: 1051135 [2020-07-21 02:29:01,515 INFO L226 Difference]: Without dead ends: 738549 [2020-07-21 02:29:02,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:29:02,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738549 states. [2020-07-21 02:30:23,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738549 to 737895. [2020-07-21 02:30:23,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 737895 states. [2020-07-21 02:30:24,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737895 states to 737895 states and 1061423 transitions. [2020-07-21 02:30:24,566 INFO L78 Accepts]: Start accepts. Automaton has 737895 states and 1061423 transitions. Word has length 342 [2020-07-21 02:30:24,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:30:24,566 INFO L479 AbstractCegarLoop]: Abstraction has 737895 states and 1061423 transitions. [2020-07-21 02:30:24,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:30:24,566 INFO L276 IsEmpty]: Start isEmpty. Operand 737895 states and 1061423 transitions. [2020-07-21 02:30:24,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-07-21 02:30:24,926 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:30:24,926 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] [2020-07-21 02:30:25,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:30:25,139 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:30:25,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:30:25,140 INFO L82 PathProgramCache]: Analyzing trace with hash -419830058, now seen corresponding path program 1 times [2020-07-21 02:30:25,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:30:25,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290450828] [2020-07-21 02:30:25,141 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:30:25,457 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 02:30:25,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:30:25,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 1618 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 02:30:25,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:30:25,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:30:25,554 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:30:25,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290450828] [2020-07-21 02:30:25,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:30:25,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 02:30:25,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40088956] [2020-07-21 02:30:25,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 02:30:25,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:30:25,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 02:30:25,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 02:30:25,555 INFO L87 Difference]: Start difference. First operand 737895 states and 1061423 transitions. Second operand 4 states. [2020-07-21 02:31:39,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:31:39,217 INFO L93 Difference]: Finished difference Result 1533409 states and 2201068 transitions. [2020-07-21 02:31:39,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 02:31:39,218 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 342 [2020-07-21 02:31:39,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:31:40,356 INFO L225 Difference]: With dead ends: 1533409 [2020-07-21 02:31:40,356 INFO L226 Difference]: Without dead ends: 797578 [2020-07-21 02:31:40,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 02:31:41,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797578 states. [2020-07-21 02:33:10,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797578 to 742933. [2020-07-21 02:33:10,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 742933 states. [2020-07-21 02:33:11,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742933 states to 742933 states and 1068967 transitions. [2020-07-21 02:33:11,318 INFO L78 Accepts]: Start accepts. Automaton has 742933 states and 1068967 transitions. Word has length 342 [2020-07-21 02:33:11,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:33:11,318 INFO L479 AbstractCegarLoop]: Abstraction has 742933 states and 1068967 transitions. [2020-07-21 02:33:11,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 02:33:11,318 INFO L276 IsEmpty]: Start isEmpty. Operand 742933 states and 1068967 transitions. [2020-07-21 02:33:11,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-07-21 02:33:11,735 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:33:11,736 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] [2020-07-21 02:33:11,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:33:11,944 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:33:11,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:33:11,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1541774182, now seen corresponding path program 1 times [2020-07-21 02:33:11,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:33:11,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705578108] [2020-07-21 02:33:11,946 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:33:12,226 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 02:33:12,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:33:12,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 1323 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 02:33:12,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:33:13,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:33:13,551 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:33:13,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705578108] [2020-07-21 02:33:13,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:33:13,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:33:13,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573861545] [2020-07-21 02:33:13,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:33:13,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:33:13,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:33:13,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:33:13,552 INFO L87 Difference]: Start difference. First operand 742933 states and 1068967 transitions. Second operand 3 states.