/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -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 0.1.25-79ed534 [2020-07-20 00:02:15,443 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 00:02:15,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 00:02:15,457 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-20 00:02:15,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 00:02:15,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 00:02:15,468 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 00:02:15,469 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 00:02:15,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 00:02:15,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 00:02:15,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 00:02:15,474 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 00:02:15,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 00:02:15,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 00:02:15,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 00:02:15,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 00:02:15,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 00:02:15,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 00:02:15,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 00:02:15,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 00:02:15,491 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 [2020-07-20 00:02:15,505 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 00:02:15,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 00:02:15,506 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 00:02:15,506 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 00:02:15,507 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 00:02:15,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 00:02:15,507 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 00:02:15,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 00:02:15,507 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 00:02:15,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 00:02:15,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 00:02:15,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 00:02:15,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 00:02:15,508 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 00:02:15,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 00:02:15,509 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 00:02:15,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 00:02:15,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 00:02:15,510 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 00:02:15,510 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 00:02:15,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 00:02:15,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 00:02:15,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 00:02:15,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 00:02:15,511 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 00:02:15,511 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 00:02:15,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 00:02:15,511 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 00:02:15,512 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 00:02:15,512 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS 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 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 00:02:15,812 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 00:02:15,825 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 00:02:15,828 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 00:02:15,829 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 00:02:15,829 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 00:02:15,830 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-20 00:02:15,890 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a94fc51d/0d334a57633f4e59878f58289fc21865/FLAG24016f2d2 [2020-07-20 00:02:16,530 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 00:02:16,531 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-20 00:02:16,555 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a94fc51d/0d334a57633f4e59878f58289fc21865/FLAG24016f2d2 [2020-07-20 00:02:16,703 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a94fc51d/0d334a57633f4e59878f58289fc21865 [2020-07-20 00:02:16,713 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 00:02:16,716 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 00:02:16,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 00:02:16,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 00:02:16,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 00:02:16,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:02:16" (1/1) ... [2020-07-20 00:02:16,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a49fa7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:02:16, skipping insertion in model container [2020-07-20 00:02:16,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:02:16" (1/1) ... [2020-07-20 00:02:16,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 00:02:16,884 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 00:02:18,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 00:02:18,318 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 00:02:19,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 00:02:19,380 INFO L208 MainTranslator]: Completed translation [2020-07-20 00:02:19,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:02:19 WrapperNode [2020-07-20 00:02:19,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 00:02:19,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 00:02:19,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 00:02:19,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 00:02:19,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:02:19" (1/1) ... [2020-07-20 00:02:19,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:02:19" (1/1) ... [2020-07-20 00:02:19,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:02:19" (1/1) ... [2020-07-20 00:02:19,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:02:19" (1/1) ... [2020-07-20 00:02:19,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:02:19" (1/1) ... [2020-07-20 00:02:19,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:02:19" (1/1) ... [2020-07-20 00:02:19,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:02:19" (1/1) ... [2020-07-20 00:02:19,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 00:02:19,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 00:02:19,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 00:02:19,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 00:02:19,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:02:19" (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 [2020-07-20 00:02:19,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 00:02:19,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 00:02:19,646 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 00:02:19,646 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 00:02:19,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 00:02:19,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-20 00:02:19,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-07-20 00:02:19,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-20 00:02:19,648 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-07-20 00:02:19,648 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 00:02:19,648 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 00:02:19,649 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-07-20 00:02:19,649 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-07-20 00:02:19,649 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-07-20 00:02:19,649 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-07-20 00:02:19,650 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-07-20 00:02:19,650 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-07-20 00:02:19,650 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-07-20 00:02:19,651 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-20 00:02:19,651 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 00:02:19,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 00:02:19,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 00:02:22,405 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 00:02:22,406 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 00:02:22,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 12:02:22 BoogieIcfgContainer [2020-07-20 00:02:22,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 00:02:22,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 00:02:22,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 00:02:22,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 00:02:22,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 12:02:16" (1/3) ... [2020-07-20 00:02:22,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51c454ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 12:02:22, skipping insertion in model container [2020-07-20 00:02:22,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:02:19" (2/3) ... [2020-07-20 00:02:22,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51c454ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 12:02:22, skipping insertion in model container [2020-07-20 00:02:22,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 12:02:22" (3/3) ... [2020-07-20 00:02:22,426 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-20 00:02:22,436 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 00:02:22,445 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-07-20 00:02:22,460 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-07-20 00:02:22,494 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 00:02:22,494 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 00:02:22,495 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 00:02:22,495 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 00:02:22,495 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 00:02:22,495 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 00:02:22,495 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 00:02:22,495 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 00:02:22,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states. [2020-07-20 00:02:22,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-07-20 00:02:22,561 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:02:22,562 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] [2020-07-20 00:02:22,563 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]=== [2020-07-20 00:02:22,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:02:22,569 INFO L82 PathProgramCache]: Analyzing trace with hash -179235525, now seen corresponding path program 1 times [2020-07-20 00:02:22,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:02:22,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161763549] [2020-07-20 00:02:22,579 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6fdd16a0 [2020-07-20 00:02:23,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:02:24,273 WARN L193 SmtUtils]: Spent 650.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 00:02:24,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:02:24,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 00:02:24,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161763549] [2020-07-20 00:02:24,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:02:24,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 00:02:24,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994616488] [2020-07-20 00:02:24,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 00:02:24,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:02:24,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 00:02:24,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 00:02:24,649 INFO L87 Difference]: Start difference. First operand 1016 states. Second operand 4 states. [2020-07-20 00:02:25,443 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 323 [2020-07-20 00:02:32,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:02:32,506 INFO L93 Difference]: Finished difference Result 1776 states and 3147 transitions. [2020-07-20 00:02:32,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 00:02:32,515 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 324 [2020-07-20 00:02:32,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:02:32,561 INFO L225 Difference]: With dead ends: 1776 [2020-07-20 00:02:32,561 INFO L226 Difference]: Without dead ends: 1481 [2020-07-20 00:02:32,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 00:02:32,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2020-07-20 00:02:32,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1479. [2020-07-20 00:02:32,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1479 states. [2020-07-20 00:02:32,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 2266 transitions. [2020-07-20 00:02:32,727 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 2266 transitions. Word has length 324 [2020-07-20 00:02:32,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:02:32,733 INFO L479 AbstractCegarLoop]: Abstraction has 1479 states and 2266 transitions. [2020-07-20 00:02:32,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 00:02:32,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 2266 transitions. [2020-07-20 00:02:32,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-07-20 00:02:32,743 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:02:32,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 00:02:32,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 00:02:32,745 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]=== [2020-07-20 00:02:32,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:02:32,746 INFO L82 PathProgramCache]: Analyzing trace with hash -220420006, now seen corresponding path program 1 times [2020-07-20 00:02:32,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:02:32,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322323797] [2020-07-20 00:02:32,746 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6fdd16a0 [2020-07-20 00:02:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:02:33,790 WARN L193 SmtUtils]: Spent 603.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 00:02:33,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:02:34,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 00:02:34,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322323797] [2020-07-20 00:02:34,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:02:34,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 00:02:34,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972636042] [2020-07-20 00:02:34,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 00:02:34,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:02:34,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 00:02:34,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 00:02:34,182 INFO L87 Difference]: Start difference. First operand 1479 states and 2266 transitions. Second operand 4 states. [2020-07-20 00:02:34,869 WARN L193 SmtUtils]: Spent 623.00 ms on a formula simplification that was a NOOP. DAG size: 323 [2020-07-20 00:02:41,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:02:41,444 INFO L93 Difference]: Finished difference Result 2852 states and 4423 transitions. [2020-07-20 00:02:41,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 00:02:41,446 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 324 [2020-07-20 00:02:41,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:02:41,459 INFO L225 Difference]: With dead ends: 2852 [2020-07-20 00:02:41,460 INFO L226 Difference]: Without dead ends: 2439 [2020-07-20 00:02:41,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 00:02:41,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2439 states. [2020-07-20 00:02:41,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2439 to 2437. [2020-07-20 00:02:41,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2437 states. [2020-07-20 00:02:41,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2437 states to 2437 states and 3757 transitions. [2020-07-20 00:02:41,550 INFO L78 Accepts]: Start accepts. Automaton has 2437 states and 3757 transitions. Word has length 324 [2020-07-20 00:02:41,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:02:41,550 INFO L479 AbstractCegarLoop]: Abstraction has 2437 states and 3757 transitions. [2020-07-20 00:02:41,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 00:02:41,551 INFO L276 IsEmpty]: Start isEmpty. Operand 2437 states and 3757 transitions. [2020-07-20 00:02:41,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-07-20 00:02:41,559 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:02:41,560 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] [2020-07-20 00:02:41,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 00:02:41,561 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]=== [2020-07-20 00:02:41,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:02:41,561 INFO L82 PathProgramCache]: Analyzing trace with hash -578874774, now seen corresponding path program 1 times [2020-07-20 00:02:41,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:02:41,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292219942] [2020-07-20 00:02:41,562 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6fdd16a0 [2020-07-20 00:02:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:02:42,790 WARN L193 SmtUtils]: Spent 539.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 00:02:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:02:43,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 00:02:43,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292219942] [2020-07-20 00:02:43,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:02:43,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 00:02:43,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350420124] [2020-07-20 00:02:43,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 00:02:43,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:02:43,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 00:02:43,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 00:02:43,022 INFO L87 Difference]: Start difference. First operand 2437 states and 3757 transitions. Second operand 5 states. [2020-07-20 00:02:51,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:02:51,957 INFO L93 Difference]: Finished difference Result 7199 states and 11086 transitions. [2020-07-20 00:02:51,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 00:02:51,957 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 324 [2020-07-20 00:02:51,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:02:51,979 INFO L225 Difference]: With dead ends: 7199 [2020-07-20 00:02:51,979 INFO L226 Difference]: Without dead ends: 4777 [2020-07-20 00:02:51,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 00:02:51,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4777 states. [2020-07-20 00:02:52,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4777 to 4653. [2020-07-20 00:02:52,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4653 states. [2020-07-20 00:02:52,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4653 states to 4653 states and 7163 transitions. [2020-07-20 00:02:52,153 INFO L78 Accepts]: Start accepts. Automaton has 4653 states and 7163 transitions. Word has length 324 [2020-07-20 00:02:52,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:02:52,153 INFO L479 AbstractCegarLoop]: Abstraction has 4653 states and 7163 transitions. [2020-07-20 00:02:52,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 00:02:52,155 INFO L276 IsEmpty]: Start isEmpty. Operand 4653 states and 7163 transitions. [2020-07-20 00:02:52,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-07-20 00:02:52,167 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:02:52,168 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] [2020-07-20 00:02:52,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 00:02:52,171 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]=== [2020-07-20 00:02:52,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:02:52,171 INFO L82 PathProgramCache]: Analyzing trace with hash 76253758, now seen corresponding path program 1 times [2020-07-20 00:02:52,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:02:52,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262183849] [2020-07-20 00:02:52,174 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6fdd16a0 [2020-07-20 00:02:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:02:52,928 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 00:02:52,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:02:53,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 00:02:53,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262183849] [2020-07-20 00:02:53,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:02:53,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 00:02:53,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933156301] [2020-07-20 00:02:53,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 00:02:53,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:02:53,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 00:02:53,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 00:02:53,110 INFO L87 Difference]: Start difference. First operand 4653 states and 7163 transitions. Second operand 4 states. [2020-07-20 00:03:02,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:03:02,742 INFO L93 Difference]: Finished difference Result 13649 states and 20959 transitions. [2020-07-20 00:03:02,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 00:03:02,742 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 326 [2020-07-20 00:03:02,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:03:02,780 INFO L225 Difference]: With dead ends: 13649 [2020-07-20 00:03:02,781 INFO L226 Difference]: Without dead ends: 9125 [2020-07-20 00:03:02,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 00:03:02,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9125 states. [2020-07-20 00:03:03,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9125 to 9001. [2020-07-20 00:03:03,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9001 states. [2020-07-20 00:03:03,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9001 states to 9001 states and 13804 transitions. [2020-07-20 00:03:03,073 INFO L78 Accepts]: Start accepts. Automaton has 9001 states and 13804 transitions. Word has length 326 [2020-07-20 00:03:03,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:03:03,073 INFO L479 AbstractCegarLoop]: Abstraction has 9001 states and 13804 transitions. [2020-07-20 00:03:03,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 00:03:03,074 INFO L276 IsEmpty]: Start isEmpty. Operand 9001 states and 13804 transitions. [2020-07-20 00:03:03,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-07-20 00:03:03,090 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:03:03,090 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] [2020-07-20 00:03:03,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-20 00:03:03,093 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]=== [2020-07-20 00:03:03,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:03:03,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1985882685, now seen corresponding path program 1 times [2020-07-20 00:03:03,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:03:03,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144843604] [2020-07-20 00:03:03,096 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6fdd16a0 [2020-07-20 00:03:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:03:03,763 WARN L193 SmtUtils]: Spent 537.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 00:03:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:03:03,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 00:03:03,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144843604] [2020-07-20 00:03:03,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:03:03,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 00:03:03,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888484776] [2020-07-20 00:03:03,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 00:03:03,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:03:03,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 00:03:03,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 00:03:03,849 INFO L87 Difference]: Start difference. First operand 9001 states and 13804 transitions. Second operand 4 states. [2020-07-20 00:03:13,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:03:13,691 INFO L93 Difference]: Finished difference Result 26928 states and 41288 transitions. [2020-07-20 00:03:13,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 00:03:13,692 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 326 [2020-07-20 00:03:13,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:03:13,739 INFO L225 Difference]: With dead ends: 26928 [2020-07-20 00:03:13,740 INFO L226 Difference]: Without dead ends: 17969 [2020-07-20 00:03:13,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 00:03:13,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17969 states. [2020-07-20 00:03:14,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17969 to 9020. [2020-07-20 00:03:14,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9020 states. [2020-07-20 00:03:14,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9020 states to 9020 states and 13832 transitions. [2020-07-20 00:03:14,101 INFO L78 Accepts]: Start accepts. Automaton has 9020 states and 13832 transitions. Word has length 326 [2020-07-20 00:03:14,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:03:14,102 INFO L479 AbstractCegarLoop]: Abstraction has 9020 states and 13832 transitions. [2020-07-20 00:03:14,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 00:03:14,102 INFO L276 IsEmpty]: Start isEmpty. Operand 9020 states and 13832 transitions. [2020-07-20 00:03:14,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-20 00:03:14,127 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:03:14,127 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] [2020-07-20 00:03:14,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-20 00:03:14,128 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]=== [2020-07-20 00:03:14,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:03:14,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1229480868, now seen corresponding path program 1 times [2020-07-20 00:03:14,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:03:14,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856609820] [2020-07-20 00:03:14,129 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6fdd16a0 [2020-07-20 00:03:14,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:03:14,769 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 00:03:14,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:03:14,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 00:03:14,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856609820] [2020-07-20 00:03:14,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:03:14,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 00:03:14,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42259843] [2020-07-20 00:03:14,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 00:03:14,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:03:14,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 00:03:14,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 00:03:14,865 INFO L87 Difference]: Start difference. First operand 9020 states and 13832 transitions. Second operand 4 states. [2020-07-20 00:03:24,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:03:24,895 INFO L93 Difference]: Finished difference Result 26947 states and 41309 transitions. [2020-07-20 00:03:24,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 00:03:24,895 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 327 [2020-07-20 00:03:24,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:03:24,928 INFO L225 Difference]: With dead ends: 26947 [2020-07-20 00:03:24,928 INFO L226 Difference]: Without dead ends: 17987 [2020-07-20 00:03:24,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 00:03:24,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17987 states. [2020-07-20 00:03:25,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17987 to 9038. [2020-07-20 00:03:25,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9038 states. [2020-07-20 00:03:25,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9038 states to 9038 states and 13853 transitions. [2020-07-20 00:03:25,320 INFO L78 Accepts]: Start accepts. Automaton has 9038 states and 13853 transitions. Word has length 327 [2020-07-20 00:03:25,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:03:25,320 INFO L479 AbstractCegarLoop]: Abstraction has 9038 states and 13853 transitions. [2020-07-20 00:03:25,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 00:03:25,320 INFO L276 IsEmpty]: Start isEmpty. Operand 9038 states and 13853 transitions. [2020-07-20 00:03:25,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-07-20 00:03:25,336 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:03:25,337 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] [2020-07-20 00:03:25,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-20 00:03:25,337 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]=== [2020-07-20 00:03:25,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:03:25,338 INFO L82 PathProgramCache]: Analyzing trace with hash 588846425, now seen corresponding path program 1 times [2020-07-20 00:03:25,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:03:25,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701202375] [2020-07-20 00:03:25,338 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6fdd16a0 [2020-07-20 00:03:25,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:03:26,084 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 00:03:26,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:03:26,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 00:03:26,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701202375] [2020-07-20 00:03:26,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:03:26,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 00:03:26,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642540396] [2020-07-20 00:03:26,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 00:03:26,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:03:26,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 00:03:26,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 00:03:26,235 INFO L87 Difference]: Start difference. First operand 9038 states and 13853 transitions. Second operand 4 states. [2020-07-20 00:03:36,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:03:36,173 INFO L93 Difference]: Finished difference Result 25493 states and 38963 transitions. [2020-07-20 00:03:36,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 00:03:36,174 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 328 [2020-07-20 00:03:36,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:03:36,195 INFO L225 Difference]: With dead ends: 25493 [2020-07-20 00:03:36,195 INFO L226 Difference]: Without dead ends: 16700 [2020-07-20 00:03:36,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 00:03:36,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16700 states. [2020-07-20 00:03:36,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16700 to 16576. [2020-07-20 00:03:36,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16576 states. [2020-07-20 00:03:36,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16576 states to 16576 states and 25242 transitions. [2020-07-20 00:03:36,731 INFO L78 Accepts]: Start accepts. Automaton has 16576 states and 25242 transitions. Word has length 328 [2020-07-20 00:03:36,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:03:36,731 INFO L479 AbstractCegarLoop]: Abstraction has 16576 states and 25242 transitions. [2020-07-20 00:03:36,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 00:03:36,731 INFO L276 IsEmpty]: Start isEmpty. Operand 16576 states and 25242 transitions. [2020-07-20 00:03:36,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-07-20 00:03:36,752 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:03:36,753 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] [2020-07-20 00:03:36,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-20 00:03:36,753 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]=== [2020-07-20 00:03:36,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:03:36,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1900100554, now seen corresponding path program 1 times [2020-07-20 00:03:36,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:03:36,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273333198] [2020-07-20 00:03:36,754 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6fdd16a0 [2020-07-20 00:03:36,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:03:37,671 WARN L193 SmtUtils]: Spent 569.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 00:03:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:03:37,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 00:03:37,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273333198] [2020-07-20 00:03:37,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:03:37,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 00:03:37,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888202658] [2020-07-20 00:03:37,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 00:03:37,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:03:37,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 00:03:37,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 00:03:37,767 INFO L87 Difference]: Start difference. First operand 16576 states and 25242 transitions. Second operand 5 states. [2020-07-20 00:03:44,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:03:44,888 INFO L93 Difference]: Finished difference Result 34651 states and 52717 transitions. [2020-07-20 00:03:44,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 00:03:44,889 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 328 [2020-07-20 00:03:44,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:03:44,904 INFO L225 Difference]: With dead ends: 34651 [2020-07-20 00:03:44,904 INFO L226 Difference]: Without dead ends: 17567 [2020-07-20 00:03:44,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 00:03:44,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17567 states. [2020-07-20 00:03:45,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17567 to 17443. [2020-07-20 00:03:45,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17443 states. [2020-07-20 00:03:45,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17443 states to 17443 states and 26456 transitions. [2020-07-20 00:03:45,440 INFO L78 Accepts]: Start accepts. Automaton has 17443 states and 26456 transitions. Word has length 328 [2020-07-20 00:03:45,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:03:45,440 INFO L479 AbstractCegarLoop]: Abstraction has 17443 states and 26456 transitions. [2020-07-20 00:03:45,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 00:03:45,440 INFO L276 IsEmpty]: Start isEmpty. Operand 17443 states and 26456 transitions. [2020-07-20 00:03:46,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-07-20 00:03:46,163 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:03:46,163 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] [2020-07-20 00:03:46,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-20 00:03:46,164 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]=== [2020-07-20 00:03:46,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:03:46,164 INFO L82 PathProgramCache]: Analyzing trace with hash 2122622970, now seen corresponding path program 1 times [2020-07-20 00:03:46,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:03:46,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117252162] [2020-07-20 00:03:46,165 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6fdd16a0 [2020-07-20 00:03:46,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:03:46,817 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 00:03:46,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:03:46,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 00:03:46,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117252162] [2020-07-20 00:03:46,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:03:46,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 00:03:46,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428997518] [2020-07-20 00:03:46,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 00:03:46,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:03:46,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 00:03:46,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 00:03:46,914 INFO L87 Difference]: Start difference. First operand 17443 states and 26456 transitions. Second operand 4 states. [2020-07-20 00:03:53,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:03:53,291 INFO L93 Difference]: Finished difference Result 51457 states and 77891 transitions. [2020-07-20 00:03:53,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 00:03:53,292 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 330 [2020-07-20 00:03:53,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:03:53,325 INFO L225 Difference]: With dead ends: 51457 [2020-07-20 00:03:53,326 INFO L226 Difference]: Without dead ends: 34467 [2020-07-20 00:03:53,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 00:03:53,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34467 states. [2020-07-20 00:03:54,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34467 to 17501. [2020-07-20 00:03:54,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17501 states. [2020-07-20 00:03:54,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17501 states to 17501 states and 26531 transitions. [2020-07-20 00:03:54,107 INFO L78 Accepts]: Start accepts. Automaton has 17501 states and 26531 transitions. Word has length 330 [2020-07-20 00:03:54,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:03:54,107 INFO L479 AbstractCegarLoop]: Abstraction has 17501 states and 26531 transitions. [2020-07-20 00:03:54,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 00:03:54,107 INFO L276 IsEmpty]: Start isEmpty. Operand 17501 states and 26531 transitions. [2020-07-20 00:03:54,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-07-20 00:03:54,125 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:03:54,125 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] [2020-07-20 00:03:54,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-20 00:03:54,125 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]=== [2020-07-20 00:03:54,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:03:54,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1502657294, now seen corresponding path program 1 times [2020-07-20 00:03:54,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:03:54,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356202950] [2020-07-20 00:03:54,126 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6fdd16a0 [2020-07-20 00:03:54,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:03:54,903 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 00:03:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:03:55,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 00:03:55,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356202950] [2020-07-20 00:03:55,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:03:55,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 00:03:55,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205736705] [2020-07-20 00:03:55,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 00:03:55,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:03:55,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 00:03:55,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 00:03:55,093 INFO L87 Difference]: Start difference. First operand 17501 states and 26531 transitions. Second operand 4 states. [2020-07-20 00:04:06,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:04:06,248 INFO L93 Difference]: Finished difference Result 51472 states and 77870 transitions. [2020-07-20 00:04:06,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 00:04:06,249 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 330 [2020-07-20 00:04:06,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:04:06,277 INFO L225 Difference]: With dead ends: 51472 [2020-07-20 00:04:06,277 INFO L226 Difference]: Without dead ends: 34256 [2020-07-20 00:04:06,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 00:04:06,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34256 states. [2020-07-20 00:04:07,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34256 to 34154. [2020-07-20 00:04:07,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34154 states. [2020-07-20 00:04:07,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34154 states to 34154 states and 51428 transitions. [2020-07-20 00:04:07,592 INFO L78 Accepts]: Start accepts. Automaton has 34154 states and 51428 transitions. Word has length 330 [2020-07-20 00:04:07,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:04:07,592 INFO L479 AbstractCegarLoop]: Abstraction has 34154 states and 51428 transitions. [2020-07-20 00:04:07,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 00:04:07,592 INFO L276 IsEmpty]: Start isEmpty. Operand 34154 states and 51428 transitions. [2020-07-20 00:04:07,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-07-20 00:04:07,613 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:04:07,613 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] [2020-07-20 00:04:07,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-20 00:04:07,613 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]=== [2020-07-20 00:04:07,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:04:07,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1851884245, now seen corresponding path program 1 times [2020-07-20 00:04:07,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:04:07,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198046842] [2020-07-20 00:04:07,615 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6fdd16a0 [2020-07-20 00:04:07,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:04:08,616 WARN L193 SmtUtils]: Spent 549.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 00:04:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:04:08,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 00:04:08,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198046842] [2020-07-20 00:04:08,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:04:08,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 00:04:08,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296929284] [2020-07-20 00:04:08,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 00:04:08,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:04:08,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 00:04:08,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 00:04:08,733 INFO L87 Difference]: Start difference. First operand 34154 states and 51428 transitions. Second operand 5 states. [2020-07-20 00:04:17,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:04:17,264 INFO L93 Difference]: Finished difference Result 72182 states and 108521 transitions. [2020-07-20 00:04:17,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 00:04:17,265 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 330 [2020-07-20 00:04:17,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:04:17,295 INFO L225 Difference]: With dead ends: 72182 [2020-07-20 00:04:17,295 INFO L226 Difference]: Without dead ends: 36830 [2020-07-20 00:04:17,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 00:04:17,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36830 states. [2020-07-20 00:04:18,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36830 to 36670. [2020-07-20 00:04:18,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36670 states. [2020-07-20 00:04:18,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36670 states to 36670 states and 54967 transitions. [2020-07-20 00:04:18,496 INFO L78 Accepts]: Start accepts. Automaton has 36670 states and 54967 transitions. Word has length 330 [2020-07-20 00:04:18,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:04:18,496 INFO L479 AbstractCegarLoop]: Abstraction has 36670 states and 54967 transitions. [2020-07-20 00:04:18,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 00:04:18,496 INFO L276 IsEmpty]: Start isEmpty. Operand 36670 states and 54967 transitions. [2020-07-20 00:04:18,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-07-20 00:04:18,524 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:04:18,525 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] [2020-07-20 00:04:18,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-20 00:04:18,525 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]=== [2020-07-20 00:04:18,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:04:18,526 INFO L82 PathProgramCache]: Analyzing trace with hash 786606060, now seen corresponding path program 1 times [2020-07-20 00:04:18,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:04:18,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376706614] [2020-07-20 00:04:18,526 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6fdd16a0 [2020-07-20 00:04:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:04:19,670 WARN L193 SmtUtils]: Spent 780.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 00:04:19,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:04:19,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 00:04:19,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376706614] [2020-07-20 00:04:19,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:04:19,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 00:04:19,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303773519] [2020-07-20 00:04:19,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 00:04:19,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:04:19,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 00:04:19,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 00:04:19,798 INFO L87 Difference]: Start difference. First operand 36670 states and 54967 transitions. Second operand 5 states. [2020-07-20 00:04:33,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:04:33,515 INFO L93 Difference]: Finished difference Result 103074 states and 153908 transitions. [2020-07-20 00:04:33,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 00:04:33,516 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 330 [2020-07-20 00:04:33,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:04:33,572 INFO L225 Difference]: With dead ends: 103074 [2020-07-20 00:04:33,572 INFO L226 Difference]: Without dead ends: 68540 [2020-07-20 00:04:33,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 00:04:33,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68540 states. [2020-07-20 00:04:36,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68540 to 37269. [2020-07-20 00:04:36,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37269 states. [2020-07-20 00:04:36,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37269 states to 37269 states and 55855 transitions. [2020-07-20 00:04:36,780 INFO L78 Accepts]: Start accepts. Automaton has 37269 states and 55855 transitions. Word has length 330 [2020-07-20 00:04:36,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:04:36,780 INFO L479 AbstractCegarLoop]: Abstraction has 37269 states and 55855 transitions. [2020-07-20 00:04:36,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 00:04:36,780 INFO L276 IsEmpty]: Start isEmpty. Operand 37269 states and 55855 transitions. [2020-07-20 00:04:36,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-07-20 00:04:36,812 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:04:36,812 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] [2020-07-20 00:04:36,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-20 00:04:36,812 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]=== [2020-07-20 00:04:36,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:04:36,813 INFO L82 PathProgramCache]: Analyzing trace with hash 2005785361, now seen corresponding path program 1 times [2020-07-20 00:04:36,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:04:36,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633060297] [2020-07-20 00:04:36,814 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6fdd16a0 [2020-07-20 00:04:36,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:04:37,483 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 00:04:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:04:37,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 00:04:37,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633060297] [2020-07-20 00:04:37,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:04:37,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 00:04:37,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062455524] [2020-07-20 00:04:37,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 00:04:37,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:04:37,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 00:04:37,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 00:04:37,575 INFO L87 Difference]: Start difference. First operand 37269 states and 55855 transitions. Second operand 4 states. [2020-07-20 00:04:47,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:04:47,021 INFO L93 Difference]: Finished difference Result 84943 states and 128225 transitions. [2020-07-20 00:04:47,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 00:04:47,023 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 330 [2020-07-20 00:04:47,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:04:47,075 INFO L225 Difference]: With dead ends: 84943 [2020-07-20 00:04:47,075 INFO L226 Difference]: Without dead ends: 54627 [2020-07-20 00:04:47,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 00:04:47,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54627 states. [2020-07-20 00:04:49,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54627 to 44745. [2020-07-20 00:04:49,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44745 states. [2020-07-20 00:04:49,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44745 states to 44745 states and 67907 transitions. [2020-07-20 00:04:49,280 INFO L78 Accepts]: Start accepts. Automaton has 44745 states and 67907 transitions. Word has length 330 [2020-07-20 00:04:49,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:04:49,280 INFO L479 AbstractCegarLoop]: Abstraction has 44745 states and 67907 transitions. [2020-07-20 00:04:49,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 00:04:49,280 INFO L276 IsEmpty]: Start isEmpty. Operand 44745 states and 67907 transitions. [2020-07-20 00:04:49,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-07-20 00:04:49,314 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:04:49,314 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] [2020-07-20 00:04:49,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-20 00:04:49,314 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]=== [2020-07-20 00:04:49,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:04:49,315 INFO L82 PathProgramCache]: Analyzing trace with hash 488749142, now seen corresponding path program 1 times [2020-07-20 00:04:49,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:04:49,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355782025] [2020-07-20 00:04:49,316 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6fdd16a0 [2020-07-20 00:04:49,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:04:49,969 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 00:04:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:04:50,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 00:04:50,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355782025] [2020-07-20 00:04:50,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:04:50,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 00:04:50,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362044575] [2020-07-20 00:04:50,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 00:04:50,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:04:50,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 00:04:50,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 00:04:50,294 INFO L87 Difference]: Start difference. First operand 44745 states and 67907 transitions. Second operand 4 states. [2020-07-20 00:05:00,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:05:00,570 INFO L93 Difference]: Finished difference Result 103117 states and 157559 transitions. [2020-07-20 00:05:00,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 00:05:00,571 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 332 [2020-07-20 00:05:00,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:05:00,632 INFO L225 Difference]: With dead ends: 103117 [2020-07-20 00:05:00,632 INFO L226 Difference]: Without dead ends: 66729 [2020-07-20 00:05:00,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 00:05:00,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66729 states. [2020-07-20 00:05:03,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66729 to 58117. [2020-07-20 00:05:03,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58117 states. [2020-07-20 00:05:03,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58117 states to 58117 states and 89475 transitions. [2020-07-20 00:05:03,804 INFO L78 Accepts]: Start accepts. Automaton has 58117 states and 89475 transitions. Word has length 332 [2020-07-20 00:05:03,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:05:03,804 INFO L479 AbstractCegarLoop]: Abstraction has 58117 states and 89475 transitions. [2020-07-20 00:05:03,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 00:05:03,804 INFO L276 IsEmpty]: Start isEmpty. Operand 58117 states and 89475 transitions. [2020-07-20 00:05:03,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-07-20 00:05:03,830 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:05:03,830 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] [2020-07-20 00:05:03,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-20 00:05:03,831 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]=== [2020-07-20 00:05:03,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:05:03,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1851970655, now seen corresponding path program 1 times [2020-07-20 00:05:03,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:05:03,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120204293] [2020-07-20 00:05:03,832 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6fdd16a0 [2020-07-20 00:05:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:05:05,828 WARN L193 SmtUtils]: Spent 496.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 00:05:05,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:05:05,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 00:05:05,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120204293] [2020-07-20 00:05:05,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:05:05,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 00:05:05,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28367619] [2020-07-20 00:05:05,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 00:05:05,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:05:05,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 00:05:05,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 00:05:05,918 INFO L87 Difference]: Start difference. First operand 58117 states and 89475 transitions. Second operand 4 states. [2020-07-20 00:05:21,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:05:21,853 INFO L93 Difference]: Finished difference Result 168405 states and 258851 transitions. [2020-07-20 00:05:21,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 00:05:21,854 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 332 [2020-07-20 00:05:21,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:05:21,957 INFO L225 Difference]: With dead ends: 168405 [2020-07-20 00:05:21,957 INFO L226 Difference]: Without dead ends: 112995 [2020-07-20 00:05:21,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 00:05:22,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112995 states. [2020-07-20 00:05:26,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112995 to 58445. [2020-07-20 00:05:26,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58445 states. [2020-07-20 00:05:26,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58445 states to 58445 states and 89913 transitions. [2020-07-20 00:05:26,846 INFO L78 Accepts]: Start accepts. Automaton has 58445 states and 89913 transitions. Word has length 332 [2020-07-20 00:05:26,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:05:26,847 INFO L479 AbstractCegarLoop]: Abstraction has 58445 states and 89913 transitions. [2020-07-20 00:05:26,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 00:05:26,847 INFO L276 IsEmpty]: Start isEmpty. Operand 58445 states and 89913 transitions. [2020-07-20 00:05:26,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-20 00:05:26,870 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:05:26,870 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] [2020-07-20 00:05:26,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-07-20 00:05:26,870 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]=== [2020-07-20 00:05:26,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:05:26,871 INFO L82 PathProgramCache]: Analyzing trace with hash -998110810, now seen corresponding path program 1 times [2020-07-20 00:05:26,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:05:26,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595086316] [2020-07-20 00:05:26,872 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6fdd16a0 [2020-07-20 00:05:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:05:27,483 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 00:05:27,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:05:27,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 00:05:27,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595086316] [2020-07-20 00:05:27,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:05:27,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 00:05:27,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720962229] [2020-07-20 00:05:27,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 00:05:27,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:05:27,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 00:05:27,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 00:05:27,565 INFO L87 Difference]: Start difference. First operand 58445 states and 89913 transitions. Second operand 4 states. [2020-07-20 00:05:44,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:05:44,109 INFO L93 Difference]: Finished difference Result 168681 states and 259125 transitions. [2020-07-20 00:05:44,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 00:05:44,110 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 333 [2020-07-20 00:05:44,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:05:44,220 INFO L225 Difference]: With dead ends: 168681 [2020-07-20 00:05:44,221 INFO L226 Difference]: Without dead ends: 113291 [2020-07-20 00:05:44,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 00:05:44,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113291 states. [2020-07-20 00:05:49,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113291 to 58773. [2020-07-20 00:05:49,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58773 states. [2020-07-20 00:05:49,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58773 states to 58773 states and 90281 transitions. [2020-07-20 00:05:49,534 INFO L78 Accepts]: Start accepts. Automaton has 58773 states and 90281 transitions. Word has length 333 [2020-07-20 00:05:49,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:05:49,534 INFO L479 AbstractCegarLoop]: Abstraction has 58773 states and 90281 transitions. [2020-07-20 00:05:49,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 00:05:49,534 INFO L276 IsEmpty]: Start isEmpty. Operand 58773 states and 90281 transitions. [2020-07-20 00:05:49,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-20 00:05:49,561 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:05:49,562 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] [2020-07-20 00:05:49,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-07-20 00:05:49,562 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]=== [2020-07-20 00:05:49,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:05:49,563 INFO L82 PathProgramCache]: Analyzing trace with hash 174227197, now seen corresponding path program 1 times [2020-07-20 00:05:49,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:05:49,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591110276] [2020-07-20 00:05:49,563 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6fdd16a0 [2020-07-20 00:05:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:05:50,357 WARN L193 SmtUtils]: Spent 618.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 00:05:50,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:05:50,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 00:05:50,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591110276] [2020-07-20 00:05:50,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:05:50,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 00:05:50,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323917571] [2020-07-20 00:05:50,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 00:05:50,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:05:50,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 00:05:50,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 00:05:50,526 INFO L87 Difference]: Start difference. First operand 58773 states and 90281 transitions. Second operand 6 states. [2020-07-20 00:05:51,114 WARN L193 SmtUtils]: Spent 527.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-07-20 00:06:00,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:06:00,942 INFO L93 Difference]: Finished difference Result 110009 states and 169376 transitions. [2020-07-20 00:06:00,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 00:06:00,943 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 333 [2020-07-20 00:06:00,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:06:00,996 INFO L225 Difference]: With dead ends: 110009 [2020-07-20 00:06:00,996 INFO L226 Difference]: Without dead ends: 58773 [2020-07-20 00:06:01,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-07-20 00:06:01,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58773 states. [2020-07-20 00:06:04,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58773 to 58773. [2020-07-20 00:06:04,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58773 states. [2020-07-20 00:06:04,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58773 states to 58773 states and 89583 transitions. [2020-07-20 00:06:04,851 INFO L78 Accepts]: Start accepts. Automaton has 58773 states and 89583 transitions. Word has length 333 [2020-07-20 00:06:04,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:06:04,851 INFO L479 AbstractCegarLoop]: Abstraction has 58773 states and 89583 transitions. [2020-07-20 00:06:04,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 00:06:04,852 INFO L276 IsEmpty]: Start isEmpty. Operand 58773 states and 89583 transitions. [2020-07-20 00:06:04,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-20 00:06:04,875 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:06:04,875 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] [2020-07-20 00:06:04,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-07-20 00:06:04,875 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]=== [2020-07-20 00:06:04,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:06:04,876 INFO L82 PathProgramCache]: Analyzing trace with hash 517892770, now seen corresponding path program 1 times [2020-07-20 00:06:04,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:06:04,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369619372] [2020-07-20 00:06:04,876 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6fdd16a0 [2020-07-20 00:06:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:06:05,737 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 00:06:05,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:06:05,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 00:06:05,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369619372] [2020-07-20 00:06:05,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:06:05,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 00:06:05,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991299954] [2020-07-20 00:06:05,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 00:06:05,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:06:05,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 00:06:05,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-07-20 00:06:05,911 INFO L87 Difference]: Start difference. First operand 58773 states and 89583 transitions. Second operand 10 states. [2020-07-20 00:06:06,502 WARN L193 SmtUtils]: Spent 520.00 ms on a formula simplification that was a NOOP. DAG size: 327 [2020-07-20 00:06:26,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:06:26,215 INFO L93 Difference]: Finished difference Result 191011 states and 295933 transitions. [2020-07-20 00:06:26,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-20 00:06:26,216 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 333 [2020-07-20 00:06:26,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:06:26,369 INFO L225 Difference]: With dead ends: 191011 [2020-07-20 00:06:26,369 INFO L226 Difference]: Without dead ends: 140423 [2020-07-20 00:06:26,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2020-07-20 00:06:26,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140423 states. [2020-07-20 00:06:35,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140423 to 103491. [2020-07-20 00:06:35,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103491 states. [2020-07-20 00:06:36,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103491 states to 103491 states and 158471 transitions. [2020-07-20 00:06:36,018 INFO L78 Accepts]: Start accepts. Automaton has 103491 states and 158471 transitions. Word has length 333 [2020-07-20 00:06:36,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:06:36,018 INFO L479 AbstractCegarLoop]: Abstraction has 103491 states and 158471 transitions. [2020-07-20 00:06:36,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 00:06:36,019 INFO L276 IsEmpty]: Start isEmpty. Operand 103491 states and 158471 transitions. [2020-07-20 00:06:36,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-20 00:06:36,045 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:06:36,046 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] [2020-07-20 00:06:36,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-07-20 00:06:36,046 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]=== [2020-07-20 00:06:36,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:06:36,047 INFO L82 PathProgramCache]: Analyzing trace with hash 72101730, now seen corresponding path program 1 times [2020-07-20 00:06:36,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:06:36,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167875896] [2020-07-20 00:06:36,047 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6fdd16a0 [2020-07-20 00:06:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:06:36,863 WARN L193 SmtUtils]: Spent 501.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 00:06:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:06:36,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 00:06:36,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167875896] [2020-07-20 00:06:36,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:06:36,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 00:06:36,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033935322] [2020-07-20 00:06:36,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 00:06:36,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:06:36,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 00:06:36,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 00:06:36,970 INFO L87 Difference]: Start difference. First operand 103491 states and 158471 transitions. Second operand 5 states. [2020-07-20 00:07:03,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:07:03,507 INFO L93 Difference]: Finished difference Result 304088 states and 465816 transitions. [2020-07-20 00:07:03,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 00:07:03,508 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 333 [2020-07-20 00:07:03,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:07:03,743 INFO L225 Difference]: With dead ends: 304088 [2020-07-20 00:07:03,743 INFO L226 Difference]: Without dead ends: 201428 [2020-07-20 00:07:03,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 00:07:03,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201428 states. [2020-07-20 00:07:22,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201428 to 201312. [2020-07-20 00:07:22,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201312 states. [2020-07-20 00:07:23,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201312 states to 201312 states and 307058 transitions. [2020-07-20 00:07:23,007 INFO L78 Accepts]: Start accepts. Automaton has 201312 states and 307058 transitions. Word has length 333 [2020-07-20 00:07:23,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:07:23,008 INFO L479 AbstractCegarLoop]: Abstraction has 201312 states and 307058 transitions. [2020-07-20 00:07:23,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 00:07:23,008 INFO L276 IsEmpty]: Start isEmpty. Operand 201312 states and 307058 transitions. [2020-07-20 00:07:23,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-07-20 00:07:23,067 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:07:23,067 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] [2020-07-20 00:07:23,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-07-20 00:07:23,068 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]=== [2020-07-20 00:07:23,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:07:23,068 INFO L82 PathProgramCache]: Analyzing trace with hash 790630548, now seen corresponding path program 1 times [2020-07-20 00:07:23,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:07:23,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536273004] [2020-07-20 00:07:23,069 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6fdd16a0 [2020-07-20 00:07:23,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:07:23,823 WARN L193 SmtUtils]: Spent 495.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 00:07:23,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:07:23,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 00:07:23,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536273004] [2020-07-20 00:07:23,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:07:23,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 00:07:23,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337013828] [2020-07-20 00:07:23,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 00:07:23,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:07:23,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 00:07:23,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 00:07:23,907 INFO L87 Difference]: Start difference. First operand 201312 states and 307058 transitions. Second operand 5 states. [2020-07-20 00:07:52,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:07:52,149 INFO L93 Difference]: Finished difference Result 289743 states and 441453 transitions. [2020-07-20 00:07:52,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 00:07:52,150 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 334 [2020-07-20 00:07:52,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:07:52,401 INFO L225 Difference]: With dead ends: 289743 [2020-07-20 00:07:52,402 INFO L226 Difference]: Without dead ends: 201488 [2020-07-20 00:07:52,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 00:07:52,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201488 states. [2020-07-20 00:08:12,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201488 to 197050. [2020-07-20 00:08:12,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197050 states. [2020-07-20 00:08:12,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197050 states to 197050 states and 300946 transitions. [2020-07-20 00:08:12,788 INFO L78 Accepts]: Start accepts. Automaton has 197050 states and 300946 transitions. Word has length 334 [2020-07-20 00:08:12,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:08:12,788 INFO L479 AbstractCegarLoop]: Abstraction has 197050 states and 300946 transitions. [2020-07-20 00:08:12,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 00:08:12,788 INFO L276 IsEmpty]: Start isEmpty. Operand 197050 states and 300946 transitions. [2020-07-20 00:08:13,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-07-20 00:08:13,147 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:08:13,147 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] [2020-07-20 00:08:13,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-07-20 00:08:13,147 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]=== [2020-07-20 00:08:13,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:08:13,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1635709975, now seen corresponding path program 1 times [2020-07-20 00:08:13,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:08:13,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629544409] [2020-07-20 00:08:13,148 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6fdd16a0 [2020-07-20 00:08:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:08:13,757 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 00:08:13,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:08:13,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 00:08:13,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629544409] [2020-07-20 00:08:13,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:08:13,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 00:08:13,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244404091] [2020-07-20 00:08:13,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 00:08:13,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:08:13,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 00:08:13,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 00:08:13,832 INFO L87 Difference]: Start difference. First operand 197050 states and 300946 transitions. Second operand 4 states. [2020-07-20 00:08:59,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:08:59,794 INFO L93 Difference]: Finished difference Result 587256 states and 896670 transitions. [2020-07-20 00:08:59,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 00:08:59,795 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 337 [2020-07-20 00:08:59,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:09:00,259 INFO L225 Difference]: With dead ends: 587256 [2020-07-20 00:09:00,260 INFO L226 Difference]: Without dead ends: 391820 [2020-07-20 00:09:00,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 00:09:00,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391820 states. [2020-07-20 00:09:22,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391820 to 197394. [2020-07-20 00:09:22,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197394 states. [2020-07-20 00:09:23,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197394 states to 197394 states and 301314 transitions. [2020-07-20 00:09:23,228 INFO L78 Accepts]: Start accepts. Automaton has 197394 states and 301314 transitions. Word has length 337 [2020-07-20 00:09:23,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:09:23,229 INFO L479 AbstractCegarLoop]: Abstraction has 197394 states and 301314 transitions. [2020-07-20 00:09:23,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 00:09:23,229 INFO L276 IsEmpty]: Start isEmpty. Operand 197394 states and 301314 transitions. [2020-07-20 00:09:23,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-07-20 00:09:23,280 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:09:23,280 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] [2020-07-20 00:09:23,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-07-20 00:09:23,281 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]=== [2020-07-20 00:09:23,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:09:23,281 INFO L82 PathProgramCache]: Analyzing trace with hash -887460974, now seen corresponding path program 1 times [2020-07-20 00:09:23,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:09:23,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812476380] [2020-07-20 00:09:23,282 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6fdd16a0 [2020-07-20 00:09:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:09:24,037 WARN L193 SmtUtils]: Spent 573.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 00:09:24,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:09:24,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 00:09:24,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812476380] [2020-07-20 00:09:24,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:09:24,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 00:09:24,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726460400] [2020-07-20 00:09:24,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 00:09:24,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:09:24,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 00:09:24,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 00:09:24,138 INFO L87 Difference]: Start difference. First operand 197394 states and 301314 transitions. Second operand 4 states. [2020-07-20 00:10:12,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:10:12,419 INFO L93 Difference]: Finished difference Result 549591 states and 837872 transitions. [2020-07-20 00:10:12,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 00:10:12,421 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 337 [2020-07-20 00:10:12,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:10:12,866 INFO L225 Difference]: With dead ends: 549591 [2020-07-20 00:10:12,866 INFO L226 Difference]: Without dead ends: 357437 [2020-07-20 00:10:13,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 00:10:13,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357437 states. [2020-07-20 00:10:49,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357437 to 357329. [2020-07-20 00:10:49,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357329 states. [2020-07-20 00:10:50,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357329 states to 357329 states and 541960 transitions. [2020-07-20 00:10:50,791 INFO L78 Accepts]: Start accepts. Automaton has 357329 states and 541960 transitions. Word has length 337 [2020-07-20 00:10:50,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:10:50,791 INFO L479 AbstractCegarLoop]: Abstraction has 357329 states and 541960 transitions. [2020-07-20 00:10:50,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 00:10:50,791 INFO L276 IsEmpty]: Start isEmpty. Operand 357329 states and 541960 transitions. [2020-07-20 00:10:50,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-07-20 00:10:50,887 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:10:50,887 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] [2020-07-20 00:10:50,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-07-20 00:10:50,887 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]=== [2020-07-20 00:10:50,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:10:50,888 INFO L82 PathProgramCache]: Analyzing trace with hash 116359141, now seen corresponding path program 1 times [2020-07-20 00:10:50,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:10:50,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272054887] [2020-07-20 00:10:50,888 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6fdd16a0 [2020-07-20 00:10:50,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:10:51,543 WARN L193 SmtUtils]: Spent 523.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 00:10:51,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:10:51,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 00:10:51,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272054887] [2020-07-20 00:10:51,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:10:51,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 00:10:51,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684058554] [2020-07-20 00:10:51,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 00:10:51,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:10:51,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 00:10:51,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 00:10:51,639 INFO L87 Difference]: Start difference. First operand 357329 states and 541960 transitions. Second operand 4 states. [2020-07-20 00:12:14,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:12:14,831 INFO L93 Difference]: Finished difference Result 1034004 states and 1567254 transitions. [2020-07-20 00:12:14,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 00:12:14,832 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 339 [2020-07-20 00:12:14,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:12:16,230 INFO L225 Difference]: With dead ends: 1034004 [2020-07-20 00:12:16,230 INFO L226 Difference]: Without dead ends: 679457 [2020-07-20 00:12:16,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 00:12:16,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679457 states. [2020-07-20 00:13:33,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679457 to 679383. [2020-07-20 00:13:33,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 679383 states. [2020-07-20 00:13:35,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679383 states to 679383 states and 1022833 transitions. [2020-07-20 00:13:35,061 INFO L78 Accepts]: Start accepts. Automaton has 679383 states and 1022833 transitions. Word has length 339 [2020-07-20 00:13:35,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:13:35,061 INFO L479 AbstractCegarLoop]: Abstraction has 679383 states and 1022833 transitions. [2020-07-20 00:13:35,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 00:13:35,062 INFO L276 IsEmpty]: Start isEmpty. Operand 679383 states and 1022833 transitions. [2020-07-20 00:13:35,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-07-20 00:13:35,263 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:13:35,264 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] [2020-07-20 00:13:35,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-07-20 00:13:35,264 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]=== [2020-07-20 00:13:35,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:13:35,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1526432742, now seen corresponding path program 1 times [2020-07-20 00:13:35,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:13:35,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192879006] [2020-07-20 00:13:35,265 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6fdd16a0 [2020-07-20 00:13:35,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:13:36,074 WARN L193 SmtUtils]: Spent 512.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-07-20 00:13:36,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:13:36,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 00:13:36,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192879006] [2020-07-20 00:13:36,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:13:36,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 00:13:36,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746455974] [2020-07-20 00:13:36,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 00:13:36,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:13:36,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 00:13:36,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 00:13:36,143 INFO L87 Difference]: Start difference. First operand 679383 states and 1022833 transitions. Second operand 5 states.