/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 23:04:19,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 23:04:19,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 23:04:19,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 23:04:19,484 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 23:04:19,486 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 23:04:19,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 23:04:19,500 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 23:04:19,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 23:04:19,503 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 23:04:19,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 23:04:19,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 23:04:19,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 23:04:19,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 23:04:19,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 23:04:19,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 23:04:19,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 23:04:19,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 23:04:19,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 23:04:19,523 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 23:04:19,524 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 23:04:19,529 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 23:04:19,530 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 23:04:19,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 23:04:19,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 23:04:19,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 23:04:19,534 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 23:04:19,536 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 23:04:19,537 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 23:04:19,537 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 23:04:19,538 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 23:04:19,539 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 23:04:19,540 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 23:04:19,542 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 23:04:19,546 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 23:04:19,546 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 23:04:19,546 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 23:04:19,547 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 23:04:19,547 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 23:04:19,548 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 23:04:19,549 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 23:04:19,550 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 23:04:19,568 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 23:04:19,568 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 23:04:19,569 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 23:04:19,570 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 23:04:19,570 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 23:04:19,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 23:04:19,570 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 23:04:19,570 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 23:04:19,571 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 23:04:19,571 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 23:04:19,572 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 23:04:19,572 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 23:04:19,572 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 23:04:19,573 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 23:04:19,573 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 23:04:19,573 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 23:04:19,573 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 23:04:19,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 23:04:19,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 23:04:19,574 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 23:04:19,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 23:04:19,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 23:04:19,574 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 23:04:19,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 23:04:19,576 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 23:04:19,576 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 23:04:19,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:04:19,576 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 23:04:19,576 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 23:04:19,577 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 23:04:19,870 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 23:04:19,883 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 23:04:19,886 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 23:04:19,888 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 23:04:19,888 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 23:04:19,889 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-20 23:04:19,946 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b409852a/5a8fc9a1d9dc4bffa6d982cc3b8d7c4f/FLAGec9e43717 [2020-07-20 23:04:20,561 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 23:04:20,561 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-20 23:04:20,582 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b409852a/5a8fc9a1d9dc4bffa6d982cc3b8d7c4f/FLAGec9e43717 [2020-07-20 23:04:20,747 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b409852a/5a8fc9a1d9dc4bffa6d982cc3b8d7c4f [2020-07-20 23:04:20,755 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 23:04:20,757 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 23:04:20,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 23:04:20,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 23:04:20,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 23:04:20,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:04:20" (1/1) ... [2020-07-20 23:04:20,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71bc094c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:04:20, skipping insertion in model container [2020-07-20 23:04:20,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:04:20" (1/1) ... [2020-07-20 23:04:20,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 23:04:20,910 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 23:04:22,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 23:04:22,360 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 23:04:23,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 23:04:23,325 INFO L208 MainTranslator]: Completed translation [2020-07-20 23:04:23,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:04:23 WrapperNode [2020-07-20 23:04:23,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 23:04:23,328 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 23:04:23,328 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 23:04:23,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 23:04:23,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:04:23" (1/1) ... [2020-07-20 23:04:23,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:04:23" (1/1) ... [2020-07-20 23:04:23,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:04:23" (1/1) ... [2020-07-20 23:04:23,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:04:23" (1/1) ... [2020-07-20 23:04:23,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:04:23" (1/1) ... [2020-07-20 23:04:23,502 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:04:23" (1/1) ... [2020-07-20 23:04:23,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:04:23" (1/1) ... [2020-07-20 23:04:23,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 23:04:23,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 23:04:23,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 23:04:23,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 23:04:23,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:04:23" (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 23:04:23,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 23:04:23,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 23:04:23,604 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 23:04:23,604 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 23:04:23,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 23:04:23,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-20 23:04:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-07-20 23:04:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-20 23:04:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-07-20 23:04:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 23:04:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 23:04:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-07-20 23:04:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-07-20 23:04:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-07-20 23:04:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-07-20 23:04:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-07-20 23:04:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-07-20 23:04:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-07-20 23:04:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-20 23:04:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 23:04:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 23:04:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 23:04:26,482 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 23:04:26,482 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 23:04:26,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:04:26 BoogieIcfgContainer [2020-07-20 23:04:26,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 23:04:26,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 23:04:26,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 23:04:26,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 23:04:26,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:04:20" (1/3) ... [2020-07-20 23:04:26,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c9e0326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:04:26, skipping insertion in model container [2020-07-20 23:04:26,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:04:23" (2/3) ... [2020-07-20 23:04:26,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c9e0326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:04:26, skipping insertion in model container [2020-07-20 23:04:26,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:04:26" (3/3) ... [2020-07-20 23:04:26,500 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-20 23:04:26,510 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 23:04:26,518 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-07-20 23:04:26,532 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-07-20 23:04:26,559 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 23:04:26,560 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 23:04:26,560 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 23:04:26,560 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 23:04:26,560 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 23:04:26,560 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 23:04:26,560 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 23:04:26,560 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 23:04:26,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states. [2020-07-20 23:04:26,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-07-20 23:04:26,633 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 23:04:26,635 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 23:04:26,635 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 23:04:26,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 23:04:26,642 INFO L82 PathProgramCache]: Analyzing trace with hash -179235525, now seen corresponding path program 1 times [2020-07-20 23:04:26,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 23:04:26,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314878456] [2020-07-20 23:04:26,652 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:04:27,041 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 23:04:27,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 23:04:27,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 1143 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 23:04:27,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 23:04:27,329 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 23:04:27,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 23:04:27,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314878456] [2020-07-20 23:04:27,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 23:04:27,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 23:04:27,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338048190] [2020-07-20 23:04:27,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 23:04:27,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 23:04:27,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 23:04:27,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 23:04:27,355 INFO L87 Difference]: Start difference. First operand 1016 states. Second operand 4 states. [2020-07-20 23:04:27,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 23:04:27,634 INFO L93 Difference]: Finished difference Result 2995 states and 5363 transitions. [2020-07-20 23:04:27,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 23:04:27,636 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 324 [2020-07-20 23:04:27,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 23:04:27,664 INFO L225 Difference]: With dead ends: 2995 [2020-07-20 23:04:27,664 INFO L226 Difference]: Without dead ends: 1986 [2020-07-20 23:04:27,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 23:04:27,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1986 states. [2020-07-20 23:04:27,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1986 to 1885. [2020-07-20 23:04:27,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1885 states. [2020-07-20 23:04:27,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 2877 transitions. [2020-07-20 23:04:27,811 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 2877 transitions. Word has length 324 [2020-07-20 23:04:27,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 23:04:27,812 INFO L479 AbstractCegarLoop]: Abstraction has 1885 states and 2877 transitions. [2020-07-20 23:04:27,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 23:04:27,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 2877 transitions. [2020-07-20 23:04:27,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-07-20 23:04:27,819 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 23:04:27,820 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:04:28,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:04:28,034 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 23:04:28,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 23:04:28,035 INFO L82 PathProgramCache]: Analyzing trace with hash 475893007, now seen corresponding path program 1 times [2020-07-20 23:04:28,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 23:04:28,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899856674] [2020-07-20 23:04:28,036 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:04:28,343 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 23:04:28,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 23:04:28,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 1283 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 23:04:28,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 23:04:28,539 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 23:04:28,539 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 23:04:28,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899856674] [2020-07-20 23:04:28,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 23:04:28,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 23:04:28,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369836806] [2020-07-20 23:04:28,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 23:04:28,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 23:04:28,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 23:04:28,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 23:04:28,544 INFO L87 Difference]: Start difference. First operand 1885 states and 2877 transitions. Second operand 3 states. [2020-07-20 23:04:28,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 23:04:28,775 INFO L93 Difference]: Finished difference Result 5462 states and 8299 transitions. [2020-07-20 23:04:28,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 23:04:28,776 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 326 [2020-07-20 23:04:28,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 23:04:28,798 INFO L225 Difference]: With dead ends: 5462 [2020-07-20 23:04:28,799 INFO L226 Difference]: Without dead ends: 3706 [2020-07-20 23:04:28,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 23:04:28,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3706 states. [2020-07-20 23:04:28,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3706 to 3605. [2020-07-20 23:04:28,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3605 states. [2020-07-20 23:04:28,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3605 states to 3605 states and 5502 transitions. [2020-07-20 23:04:28,970 INFO L78 Accepts]: Start accepts. Automaton has 3605 states and 5502 transitions. Word has length 326 [2020-07-20 23:04:28,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 23:04:28,977 INFO L479 AbstractCegarLoop]: Abstraction has 3605 states and 5502 transitions. [2020-07-20 23:04:28,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 23:04:28,978 INFO L276 IsEmpty]: Start isEmpty. Operand 3605 states and 5502 transitions. [2020-07-20 23:04:28,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-07-20 23:04:28,989 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 23:04:28,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 23:04:29,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:04:29,204 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 23:04:29,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 23:04:29,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1586243436, now seen corresponding path program 1 times [2020-07-20 23:04:29,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 23:04:29,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417476797] [2020-07-20 23:04:29,206 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:04:29,482 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 23:04:29,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 23:04:29,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 1009 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 23:04:29,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 23:04:29,559 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 23:04:29,559 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 23:04:29,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417476797] [2020-07-20 23:04:29,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 23:04:29,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 23:04:29,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574412444] [2020-07-20 23:04:29,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 23:04:29,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 23:04:29,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 23:04:29,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 23:04:29,562 INFO L87 Difference]: Start difference. First operand 3605 states and 5502 transitions. Second operand 3 states. [2020-07-20 23:04:29,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 23:04:29,799 INFO L93 Difference]: Finished difference Result 10738 states and 16376 transitions. [2020-07-20 23:04:29,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 23:04:29,800 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 326 [2020-07-20 23:04:29,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 23:04:29,845 INFO L225 Difference]: With dead ends: 10738 [2020-07-20 23:04:29,845 INFO L226 Difference]: Without dead ends: 7172 [2020-07-20 23:04:29,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 23:04:29,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7172 states. [2020-07-20 23:04:30,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7172 to 3619. [2020-07-20 23:04:30,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3619 states. [2020-07-20 23:04:30,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3619 states to 3619 states and 5519 transitions. [2020-07-20 23:04:30,101 INFO L78 Accepts]: Start accepts. Automaton has 3619 states and 5519 transitions. Word has length 326 [2020-07-20 23:04:30,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 23:04:30,101 INFO L479 AbstractCegarLoop]: Abstraction has 3619 states and 5519 transitions. [2020-07-20 23:04:30,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 23:04:30,102 INFO L276 IsEmpty]: Start isEmpty. Operand 3619 states and 5519 transitions. [2020-07-20 23:04:30,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-20 23:04:30,119 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 23:04:30,120 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 23:04:30,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:04:30,334 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 23:04:30,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 23:04:30,335 INFO L82 PathProgramCache]: Analyzing trace with hash -985134173, now seen corresponding path program 1 times [2020-07-20 23:04:30,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 23:04:30,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242578548] [2020-07-20 23:04:30,336 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:04:30,665 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 23:04:30,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 23:04:30,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 1146 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 23:04:30,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 23:04:30,736 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 23:04:30,736 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 23:04:30,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242578548] [2020-07-20 23:04:30,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 23:04:30,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 23:04:30,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144892423] [2020-07-20 23:04:30,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 23:04:30,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 23:04:30,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 23:04:30,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 23:04:30,739 INFO L87 Difference]: Start difference. First operand 3619 states and 5519 transitions. Second operand 3 states. [2020-07-20 23:04:30,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 23:04:30,975 INFO L93 Difference]: Finished difference Result 10760 states and 16406 transitions. [2020-07-20 23:04:30,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 23:04:30,976 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 327 [2020-07-20 23:04:30,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 23:04:31,014 INFO L225 Difference]: With dead ends: 10760 [2020-07-20 23:04:31,015 INFO L226 Difference]: Without dead ends: 7195 [2020-07-20 23:04:31,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 23:04:31,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7195 states. [2020-07-20 23:04:31,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7195 to 3642. [2020-07-20 23:04:31,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3642 states. [2020-07-20 23:04:31,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 5551 transitions. [2020-07-20 23:04:31,232 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 5551 transitions. Word has length 327 [2020-07-20 23:04:31,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 23:04:31,232 INFO L479 AbstractCegarLoop]: Abstraction has 3642 states and 5551 transitions. [2020-07-20 23:04:31,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 23:04:31,232 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 5551 transitions. [2020-07-20 23:04:31,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-07-20 23:04:31,243 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 23:04:31,243 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 23:04:31,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:04:31,458 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 23:04:31,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 23:04:31,458 INFO L82 PathProgramCache]: Analyzing trace with hash 988485674, now seen corresponding path program 1 times [2020-07-20 23:04:31,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 23:04:31,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365637430] [2020-07-20 23:04:31,459 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:04:31,780 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 23:04:31,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 23:04:31,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 1146 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 23:04:31,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 23:04:31,846 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 23:04:31,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 23:04:31,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365637430] [2020-07-20 23:04:31,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 23:04:31,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 23:04:31,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229567768] [2020-07-20 23:04:31,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 23:04:31,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 23:04:31,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 23:04:31,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 23:04:31,849 INFO L87 Difference]: Start difference. First operand 3642 states and 5551 transitions. Second operand 4 states. [2020-07-20 23:04:32,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 23:04:32,121 INFO L93 Difference]: Finished difference Result 8044 states and 12225 transitions. [2020-07-20 23:04:32,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 23:04:32,122 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 328 [2020-07-20 23:04:32,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 23:04:32,162 INFO L225 Difference]: With dead ends: 8044 [2020-07-20 23:04:32,162 INFO L226 Difference]: Without dead ends: 4194 [2020-07-20 23:04:32,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 23:04:32,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4194 states. [2020-07-20 23:04:32,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4194 to 4093. [2020-07-20 23:04:32,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4093 states. [2020-07-20 23:04:32,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4093 states to 4093 states and 6223 transitions. [2020-07-20 23:04:32,333 INFO L78 Accepts]: Start accepts. Automaton has 4093 states and 6223 transitions. Word has length 328 [2020-07-20 23:04:32,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 23:04:32,334 INFO L479 AbstractCegarLoop]: Abstraction has 4093 states and 6223 transitions. [2020-07-20 23:04:32,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 23:04:32,335 INFO L276 IsEmpty]: Start isEmpty. Operand 4093 states and 6223 transitions. [2020-07-20 23:04:32,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-07-20 23:04:32,346 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 23:04:32,346 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 23:04:32,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:04:32,562 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 23:04:32,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 23:04:32,563 INFO L82 PathProgramCache]: Analyzing trace with hash 2103525166, now seen corresponding path program 1 times [2020-07-20 23:04:32,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 23:04:32,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310288364] [2020-07-20 23:04:32,563 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:04:32,803 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 23:04:32,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 23:04:32,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 23:04:32,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 23:04:32,948 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 23:04:32,957 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 23:04:32,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310288364] [2020-07-20 23:04:32,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 23:04:32,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 23:04:32,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652301108] [2020-07-20 23:04:32,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 23:04:32,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 23:04:32,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 23:04:32,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 23:04:32,966 INFO L87 Difference]: Start difference. First operand 4093 states and 6223 transitions. Second operand 3 states. [2020-07-20 23:04:33,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 23:04:33,204 INFO L93 Difference]: Finished difference Result 11699 states and 17690 transitions. [2020-07-20 23:04:33,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 23:04:33,205 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 330 [2020-07-20 23:04:33,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 23:04:33,222 INFO L225 Difference]: With dead ends: 11699 [2020-07-20 23:04:33,222 INFO L226 Difference]: Without dead ends: 7905 [2020-07-20 23:04:33,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 23:04:33,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7905 states. [2020-07-20 23:04:33,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7905 to 4123. [2020-07-20 23:04:33,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4123 states. [2020-07-20 23:04:33,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4123 states to 4123 states and 6258 transitions. [2020-07-20 23:04:33,425 INFO L78 Accepts]: Start accepts. Automaton has 4123 states and 6258 transitions. Word has length 330 [2020-07-20 23:04:33,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 23:04:33,425 INFO L479 AbstractCegarLoop]: Abstraction has 4123 states and 6258 transitions. [2020-07-20 23:04:33,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 23:04:33,425 INFO L276 IsEmpty]: Start isEmpty. Operand 4123 states and 6258 transitions. [2020-07-20 23:04:33,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-07-20 23:04:33,441 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 23:04:33,441 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 23:04:33,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:04:33,655 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 23:04:33,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 23:04:33,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1806349788, now seen corresponding path program 1 times [2020-07-20 23:04:33,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 23:04:33,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101509314] [2020-07-20 23:04:33,657 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:04:33,950 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 23:04:33,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 23:04:33,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 1288 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 23:04:33,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 23:04:34,113 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 23:04:34,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 23:04:34,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1101509314] [2020-07-20 23:04:34,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 23:04:34,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 23:04:34,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021387413] [2020-07-20 23:04:34,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 23:04:34,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 23:04:34,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 23:04:34,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 23:04:34,116 INFO L87 Difference]: Start difference. First operand 4123 states and 6258 transitions. Second operand 3 states. [2020-07-20 23:04:34,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 23:04:34,427 INFO L93 Difference]: Finished difference Result 11681 states and 17637 transitions. [2020-07-20 23:04:34,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 23:04:34,427 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 330 [2020-07-20 23:04:34,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 23:04:34,443 INFO L225 Difference]: With dead ends: 11681 [2020-07-20 23:04:34,443 INFO L226 Difference]: Without dead ends: 7985 [2020-07-20 23:04:34,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 23:04:34,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7985 states. [2020-07-20 23:04:34,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7985 to 7884. [2020-07-20 23:04:34,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7884 states. [2020-07-20 23:04:34,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7884 states to 7884 states and 11915 transitions. [2020-07-20 23:04:34,743 INFO L78 Accepts]: Start accepts. Automaton has 7884 states and 11915 transitions. Word has length 330 [2020-07-20 23:04:34,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 23:04:34,744 INFO L479 AbstractCegarLoop]: Abstraction has 7884 states and 11915 transitions. [2020-07-20 23:04:34,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 23:04:34,744 INFO L276 IsEmpty]: Start isEmpty. Operand 7884 states and 11915 transitions. [2020-07-20 23:04:34,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-07-20 23:04:34,763 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 23:04:34,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:04:34,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:04:34,977 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 23:04:34,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 23:04:34,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1902296543, now seen corresponding path program 1 times [2020-07-20 23:04:34,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 23:04:34,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196167055] [2020-07-20 23:04:34,978 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:04:35,205 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 23:04:35,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 23:04:35,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 23:04:35,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 23:04:35,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 23:04:35,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 23:04:35,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196167055] [2020-07-20 23:04:35,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 23:04:35,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 23:04:35,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075915562] [2020-07-20 23:04:35,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 23:04:35,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 23:04:35,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 23:04:35,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 23:04:35,415 INFO L87 Difference]: Start difference. First operand 7884 states and 11915 transitions. Second operand 4 states. [2020-07-20 23:04:35,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 23:04:35,906 INFO L93 Difference]: Finished difference Result 21281 states and 31933 transitions. [2020-07-20 23:04:35,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 23:04:35,906 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 330 [2020-07-20 23:04:35,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 23:04:35,944 INFO L225 Difference]: With dead ends: 21281 [2020-07-20 23:04:35,945 INFO L226 Difference]: Without dead ends: 14218 [2020-07-20 23:04:35,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 23:04:35,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14218 states. [2020-07-20 23:04:36,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14218 to 8156. [2020-07-20 23:04:36,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8156 states. [2020-07-20 23:04:36,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8156 states to 8156 states and 12345 transitions. [2020-07-20 23:04:36,369 INFO L78 Accepts]: Start accepts. Automaton has 8156 states and 12345 transitions. Word has length 330 [2020-07-20 23:04:36,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 23:04:36,369 INFO L479 AbstractCegarLoop]: Abstraction has 8156 states and 12345 transitions. [2020-07-20 23:04:36,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 23:04:36,370 INFO L276 IsEmpty]: Start isEmpty. Operand 8156 states and 12345 transitions. [2020-07-20 23:04:36,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-07-20 23:04:36,385 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 23:04:36,386 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 23:04:36,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:04:36,599 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 23:04:36,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 23:04:36,599 INFO L82 PathProgramCache]: Analyzing trace with hash 2005785361, now seen corresponding path program 1 times [2020-07-20 23:04:36,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 23:04:36,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258601071] [2020-07-20 23:04:36,601 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:04:36,823 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 23:04:36,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 23:04:36,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 1025 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 23:04:36,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 23:04:37,016 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 23:04:37,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 23:04:37,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258601071] [2020-07-20 23:04:37,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 23:04:37,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 23:04:37,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193352935] [2020-07-20 23:04:37,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 23:04:37,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 23:04:37,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 23:04:37,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-07-20 23:04:37,018 INFO L87 Difference]: Start difference. First operand 8156 states and 12345 transitions. Second operand 9 states. [2020-07-20 23:04:44,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 23:04:44,405 INFO L93 Difference]: Finished difference Result 42128 states and 64667 transitions. [2020-07-20 23:04:44,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-07-20 23:04:44,406 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 330 [2020-07-20 23:04:44,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 23:04:44,507 INFO L225 Difference]: With dead ends: 42128 [2020-07-20 23:04:44,507 INFO L226 Difference]: Without dead ends: 40259 [2020-07-20 23:04:44,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=370, Invalid=1112, Unknown=0, NotChecked=0, Total=1482 [2020-07-20 23:04:44,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40259 states. [2020-07-20 23:04:45,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40259 to 17966. [2020-07-20 23:04:45,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17966 states. [2020-07-20 23:04:45,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17966 states to 17966 states and 27291 transitions. [2020-07-20 23:04:45,585 INFO L78 Accepts]: Start accepts. Automaton has 17966 states and 27291 transitions. Word has length 330 [2020-07-20 23:04:45,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 23:04:45,586 INFO L479 AbstractCegarLoop]: Abstraction has 17966 states and 27291 transitions. [2020-07-20 23:04:45,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 23:04:45,586 INFO L276 IsEmpty]: Start isEmpty. Operand 17966 states and 27291 transitions. [2020-07-20 23:04:45,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-07-20 23:04:45,615 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 23:04:45,615 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 23:04:45,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:04:45,830 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 23:04:45,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 23:04:45,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1559994321, now seen corresponding path program 1 times [2020-07-20 23:04:45,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 23:04:45,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204390648] [2020-07-20 23:04:45,836 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:04:46,114 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 23:04:46,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 23:04:46,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 1299 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 23:04:46,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 23:04:46,176 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 23:04:46,176 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 23:04:46,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204390648] [2020-07-20 23:04:46,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 23:04:46,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 23:04:46,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796845259] [2020-07-20 23:04:46,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 23:04:46,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 23:04:46,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 23:04:46,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 23:04:46,178 INFO L87 Difference]: Start difference. First operand 17966 states and 27291 transitions. Second operand 3 states. [2020-07-20 23:04:47,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 23:04:47,509 INFO L93 Difference]: Finished difference Result 39745 states and 60624 transitions. [2020-07-20 23:04:47,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 23:04:47,509 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 330 [2020-07-20 23:04:47,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 23:04:47,561 INFO L225 Difference]: With dead ends: 39745 [2020-07-20 23:04:47,561 INFO L226 Difference]: Without dead ends: 24366 [2020-07-20 23:04:47,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 23:04:47,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24366 states. [2020-07-20 23:04:48,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24366 to 20712. [2020-07-20 23:04:48,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20712 states. [2020-07-20 23:04:48,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20712 states to 20712 states and 31729 transitions. [2020-07-20 23:04:48,515 INFO L78 Accepts]: Start accepts. Automaton has 20712 states and 31729 transitions. Word has length 330 [2020-07-20 23:04:48,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 23:04:48,516 INFO L479 AbstractCegarLoop]: Abstraction has 20712 states and 31729 transitions. [2020-07-20 23:04:48,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 23:04:48,516 INFO L276 IsEmpty]: Start isEmpty. Operand 20712 states and 31729 transitions. [2020-07-20 23:04:48,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-07-20 23:04:48,540 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 23:04:48,540 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 23:04:48,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:04:48,755 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 23:04:48,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 23:04:48,755 INFO L82 PathProgramCache]: Analyzing trace with hash 888388391, now seen corresponding path program 1 times [2020-07-20 23:04:48,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 23:04:48,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566976753] [2020-07-20 23:04:48,757 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:04:49,016 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 23:04:49,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 23:04:49,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 1295 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 23:04:49,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 23:04:49,100 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 23:04:49,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 23:04:49,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566976753] [2020-07-20 23:04:49,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 23:04:49,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 23:04:49,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269496714] [2020-07-20 23:04:49,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 23:04:49,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 23:04:49,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 23:04:49,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 23:04:49,103 INFO L87 Difference]: Start difference. First operand 20712 states and 31729 transitions. Second operand 3 states. [2020-07-20 23:04:50,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 23:04:50,320 INFO L93 Difference]: Finished difference Result 48148 states and 74293 transitions. [2020-07-20 23:04:50,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 23:04:50,320 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 332 [2020-07-20 23:04:50,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 23:04:50,363 INFO L225 Difference]: With dead ends: 48148 [2020-07-20 23:04:50,363 INFO L226 Difference]: Without dead ends: 30731 [2020-07-20 23:04:50,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 23:04:50,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30731 states. [2020-07-20 23:04:52,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30731 to 26778. [2020-07-20 23:04:52,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26778 states. [2020-07-20 23:04:52,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26778 states to 26778 states and 41533 transitions. [2020-07-20 23:04:52,269 INFO L78 Accepts]: Start accepts. Automaton has 26778 states and 41533 transitions. Word has length 332 [2020-07-20 23:04:52,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 23:04:52,269 INFO L479 AbstractCegarLoop]: Abstraction has 26778 states and 41533 transitions. [2020-07-20 23:04:52,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 23:04:52,269 INFO L276 IsEmpty]: Start isEmpty. Operand 26778 states and 41533 transitions. [2020-07-20 23:04:52,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-07-20 23:04:52,288 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 23:04:52,288 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 23:04:52,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:04:52,498 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 23:04:52,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 23:04:52,499 INFO L82 PathProgramCache]: Analyzing trace with hash -521862892, now seen corresponding path program 1 times [2020-07-20 23:04:52,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 23:04:52,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459887970] [2020-07-20 23:04:52,500 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:04:52,726 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 23:04:52,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 23:04:52,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 1012 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 23:04:52,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 23:04:52,819 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 23:04:52,820 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 23:04:52,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459887970] [2020-07-20 23:04:52,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 23:04:52,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 23:04:52,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2502766] [2020-07-20 23:04:52,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 23:04:52,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 23:04:52,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 23:04:52,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 23:04:52,822 INFO L87 Difference]: Start difference. First operand 26778 states and 41533 transitions. Second operand 3 states. [2020-07-20 23:04:54,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 23:04:54,923 INFO L93 Difference]: Finished difference Result 78116 states and 120899 transitions. [2020-07-20 23:04:54,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 23:04:54,924 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 332 [2020-07-20 23:04:54,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 23:04:54,994 INFO L225 Difference]: With dead ends: 78116 [2020-07-20 23:04:54,994 INFO L226 Difference]: Without dead ends: 52457 [2020-07-20 23:04:55,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 23:04:55,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52457 states. [2020-07-20 23:04:56,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52457 to 26904. [2020-07-20 23:04:56,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26904 states. [2020-07-20 23:04:56,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26904 states to 26904 states and 41697 transitions. [2020-07-20 23:04:56,384 INFO L78 Accepts]: Start accepts. Automaton has 26904 states and 41697 transitions. Word has length 332 [2020-07-20 23:04:56,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 23:04:56,384 INFO L479 AbstractCegarLoop]: Abstraction has 26904 states and 41697 transitions. [2020-07-20 23:04:56,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 23:04:56,384 INFO L276 IsEmpty]: Start isEmpty. Operand 26904 states and 41697 transitions. [2020-07-20 23:04:56,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-20 23:04:56,397 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 23:04:56,397 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 23:04:56,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:04:56,604 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 23:04:56,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 23:04:56,605 INFO L82 PathProgramCache]: Analyzing trace with hash -729828760, now seen corresponding path program 1 times [2020-07-20 23:04:56,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 23:04:56,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714156870] [2020-07-20 23:04:56,606 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:04:56,837 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 23:04:56,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 23:04:56,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 1014 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 23:04:56,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 23:04:56,918 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 23:04:56,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 23:04:56,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714156870] [2020-07-20 23:04:56,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 23:04:56,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 23:04:56,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56324288] [2020-07-20 23:04:56,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 23:04:56,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 23:04:56,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 23:04:56,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 23:04:56,920 INFO L87 Difference]: Start difference. First operand 26904 states and 41697 transitions. Second operand 4 states. [2020-07-20 23:04:58,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 23:04:58,669 INFO L93 Difference]: Finished difference Result 56207 states and 86813 transitions. [2020-07-20 23:04:58,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 23:04:58,670 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 333 [2020-07-20 23:04:58,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 23:04:58,702 INFO L225 Difference]: With dead ends: 56207 [2020-07-20 23:04:58,702 INFO L226 Difference]: Without dead ends: 28564 [2020-07-20 23:04:58,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 23:04:58,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28564 states. [2020-07-20 23:04:59,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28564 to 28463. [2020-07-20 23:04:59,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28463 states. [2020-07-20 23:05:00,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28463 states to 28463 states and 43802 transitions. [2020-07-20 23:05:00,006 INFO L78 Accepts]: Start accepts. Automaton has 28463 states and 43802 transitions. Word has length 333 [2020-07-20 23:05:00,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 23:05:00,006 INFO L479 AbstractCegarLoop]: Abstraction has 28463 states and 43802 transitions. [2020-07-20 23:05:00,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 23:05:00,006 INFO L276 IsEmpty]: Start isEmpty. Operand 28463 states and 43802 transitions. [2020-07-20 23:05:00,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-20 23:05:00,019 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 23:05:00,019 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 23:05:00,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:05:00,220 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 23:05:00,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 23:05:00,222 INFO L82 PathProgramCache]: Analyzing trace with hash 490418378, now seen corresponding path program 1 times [2020-07-20 23:05:00,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 23:05:00,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679798659] [2020-07-20 23:05:00,223 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:05:00,448 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 23:05:00,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 23:05:00,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 23:05:00,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 23:05:00,504 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 23:05:00,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 23:05:00,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679798659] [2020-07-20 23:05:00,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 23:05:00,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 23:05:00,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112453047] [2020-07-20 23:05:00,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 23:05:00,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 23:05:00,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 23:05:00,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 23:05:00,506 INFO L87 Difference]: Start difference. First operand 28463 states and 43802 transitions. Second operand 4 states. [2020-07-20 23:05:02,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 23:05:02,816 INFO L93 Difference]: Finished difference Result 83586 states and 128513 transitions. [2020-07-20 23:05:02,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 23:05:02,817 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 333 [2020-07-20 23:05:02,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 23:05:02,883 INFO L225 Difference]: With dead ends: 83586 [2020-07-20 23:05:02,883 INFO L226 Difference]: Without dead ends: 56468 [2020-07-20 23:05:02,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 23:05:02,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56468 states. [2020-07-20 23:05:05,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56468 to 29892. [2020-07-20 23:05:05,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29892 states. [2020-07-20 23:05:05,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29892 states to 29892 states and 46011 transitions. [2020-07-20 23:05:05,552 INFO L78 Accepts]: Start accepts. Automaton has 29892 states and 46011 transitions. Word has length 333 [2020-07-20 23:05:05,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 23:05:05,552 INFO L479 AbstractCegarLoop]: Abstraction has 29892 states and 46011 transitions. [2020-07-20 23:05:05,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 23:05:05,552 INFO L276 IsEmpty]: Start isEmpty. Operand 29892 states and 46011 transitions. [2020-07-20 23:05:05,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-20 23:05:05,570 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 23:05:05,570 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 23:05:05,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:05:05,784 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 23:05:05,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 23:05:05,785 INFO L82 PathProgramCache]: Analyzing trace with hash -271563843, now seen corresponding path program 1 times [2020-07-20 23:05:05,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 23:05:05,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131786095] [2020-07-20 23:05:05,786 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:05:06,063 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 23:05:06,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 23:05:06,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 1303 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 23:05:06,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 23:05:06,173 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 23:05:06,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 23:05:06,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131786095] [2020-07-20 23:05:06,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 23:05:06,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 23:05:06,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183791975] [2020-07-20 23:05:06,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 23:05:06,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 23:05:06,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 23:05:06,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 23:05:06,175 INFO L87 Difference]: Start difference. First operand 29892 states and 46011 transitions. Second operand 4 states. [2020-07-20 23:05:08,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 23:05:08,747 INFO L93 Difference]: Finished difference Result 86237 states and 132430 transitions. [2020-07-20 23:05:08,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 23:05:08,749 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 333 [2020-07-20 23:05:08,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 23:05:08,811 INFO L225 Difference]: With dead ends: 86237 [2020-07-20 23:05:08,811 INFO L226 Difference]: Without dead ends: 57170 [2020-07-20 23:05:08,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 23:05:08,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57170 states. [2020-07-20 23:05:11,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57170 to 57073. [2020-07-20 23:05:11,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57073 states. [2020-07-20 23:05:11,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57073 states to 57073 states and 87267 transitions. [2020-07-20 23:05:11,608 INFO L78 Accepts]: Start accepts. Automaton has 57073 states and 87267 transitions. Word has length 333 [2020-07-20 23:05:11,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 23:05:11,609 INFO L479 AbstractCegarLoop]: Abstraction has 57073 states and 87267 transitions. [2020-07-20 23:05:11,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 23:05:11,609 INFO L276 IsEmpty]: Start isEmpty. Operand 57073 states and 87267 transitions. [2020-07-20 23:05:11,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-07-20 23:05:11,644 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 23:05:11,645 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 23:05:11,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:05:11,855 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 23:05:11,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 23:05:11,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1761420339, now seen corresponding path program 1 times [2020-07-20 23:05:11,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 23:05:11,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182897571] [2020-07-20 23:05:11,857 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:05:12,357 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 23:05:12,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 23:05:12,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 1015 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 23:05:12,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 23:05:12,418 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 23:05:12,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 23:05:12,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182897571] [2020-07-20 23:05:12,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 23:05:12,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 23:05:12,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072149178] [2020-07-20 23:05:12,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 23:05:12,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 23:05:12,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 23:05:12,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 23:05:12,421 INFO L87 Difference]: Start difference. First operand 57073 states and 87267 transitions. Second operand 3 states. [2020-07-20 23:05:18,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 23:05:18,423 INFO L93 Difference]: Finished difference Result 166000 states and 253360 transitions. [2020-07-20 23:05:18,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 23:05:18,423 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 335 [2020-07-20 23:05:18,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 23:05:18,545 INFO L225 Difference]: With dead ends: 166000 [2020-07-20 23:05:18,545 INFO L226 Difference]: Without dead ends: 111609 [2020-07-20 23:05:18,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 23:05:18,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111609 states. [2020-07-20 23:05:21,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111609 to 57431. [2020-07-20 23:05:21,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57431 states. [2020-07-20 23:05:21,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57431 states to 57431 states and 87679 transitions. [2020-07-20 23:05:21,850 INFO L78 Accepts]: Start accepts. Automaton has 57431 states and 87679 transitions. Word has length 335 [2020-07-20 23:05:21,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 23:05:21,851 INFO L479 AbstractCegarLoop]: Abstraction has 57431 states and 87679 transitions. [2020-07-20 23:05:21,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 23:05:21,851 INFO L276 IsEmpty]: Start isEmpty. Operand 57431 states and 87679 transitions. [2020-07-20 23:05:21,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-07-20 23:05:21,875 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 23:05:21,875 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, 1, 1] [2020-07-20 23:05:22,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:05:22,076 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 23:05:22,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 23:05:22,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1535559500, now seen corresponding path program 1 times [2020-07-20 23:05:22,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 23:05:22,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518994555] [2020-07-20 23:05:22,078 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:05:22,348 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 23:05:22,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 23:05:22,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 1303 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 23:05:22,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 23:05:22,428 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 23:05:22,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 23:05:22,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518994555] [2020-07-20 23:05:22,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 23:05:22,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 23:05:22,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998685635] [2020-07-20 23:05:22,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 23:05:22,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 23:05:22,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 23:05:22,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 23:05:22,430 INFO L87 Difference]: Start difference. First operand 57431 states and 87679 transitions. Second operand 3 states. [2020-07-20 23:05:29,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 23:05:29,171 INFO L93 Difference]: Finished difference Result 162316 states and 247465 transitions. [2020-07-20 23:05:29,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 23:05:29,172 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 335 [2020-07-20 23:05:29,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 23:05:29,287 INFO L225 Difference]: With dead ends: 162316 [2020-07-20 23:05:29,287 INFO L226 Difference]: Without dead ends: 109692 [2020-07-20 23:05:29,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 23:05:29,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109692 states. [2020-07-20 23:05:34,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109692 to 109597. [2020-07-20 23:05:34,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109597 states. [2020-07-20 23:05:34,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109597 states to 109597 states and 166264 transitions. [2020-07-20 23:05:34,897 INFO L78 Accepts]: Start accepts. Automaton has 109597 states and 166264 transitions. Word has length 335 [2020-07-20 23:05:34,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 23:05:34,898 INFO L479 AbstractCegarLoop]: Abstraction has 109597 states and 166264 transitions. [2020-07-20 23:05:34,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 23:05:34,898 INFO L276 IsEmpty]: Start isEmpty. Operand 109597 states and 166264 transitions. [2020-07-20 23:05:34,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-07-20 23:05:34,945 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 23:05:34,946 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 23:05:35,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:05:35,147 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 23:05:35,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 23:05:35,147 INFO L82 PathProgramCache]: Analyzing trace with hash 140600134, now seen corresponding path program 1 times [2020-07-20 23:05:35,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 23:05:35,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924610569] [2020-07-20 23:05:35,149 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:05:35,373 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 23:05:35,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 23:05:35,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 1030 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 23:05:35,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 23:05:35,499 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 23:05:35,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 23:05:35,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924610569] [2020-07-20 23:05:35,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 23:05:35,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 23:05:35,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260650975] [2020-07-20 23:05:35,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 23:05:35,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 23:05:35,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 23:05:35,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-07-20 23:05:35,501 INFO L87 Difference]: Start difference. First operand 109597 states and 166264 transitions. Second operand 9 states. [2020-07-20 23:06:06,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 23:06:06,501 INFO L93 Difference]: Finished difference Result 436009 states and 674880 transitions. [2020-07-20 23:06:06,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-07-20 23:06:06,502 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 336 [2020-07-20 23:06:06,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 23:06:07,026 INFO L225 Difference]: With dead ends: 436009 [2020-07-20 23:06:07,026 INFO L226 Difference]: Without dead ends: 397829 [2020-07-20 23:06:07,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=317, Invalid=873, Unknown=0, NotChecked=0, Total=1190 [2020-07-20 23:06:07,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397829 states. [2020-07-20 23:06:26,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397829 to 183809. [2020-07-20 23:06:26,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183809 states. [2020-07-20 23:06:26,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183809 states to 183809 states and 280916 transitions. [2020-07-20 23:06:26,618 INFO L78 Accepts]: Start accepts. Automaton has 183809 states and 280916 transitions. Word has length 336 [2020-07-20 23:06:26,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 23:06:26,619 INFO L479 AbstractCegarLoop]: Abstraction has 183809 states and 280916 transitions. [2020-07-20 23:06:26,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 23:06:26,619 INFO L276 IsEmpty]: Start isEmpty. Operand 183809 states and 280916 transitions. [2020-07-20 23:06:26,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-07-20 23:06:26,680 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 23:06:26,680 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 23:06:26,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:06:26,881 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 23:06:26,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 23:06:26,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1842987710, now seen corresponding path program 1 times [2020-07-20 23:06:26,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 23:06:26,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326912692] [2020-07-20 23:06:26,883 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:06:27,158 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 23:06:27,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 23:06:27,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 1305 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 23:06:27,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 23:06:27,241 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 23:06:27,242 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 23:06:27,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326912692] [2020-07-20 23:06:27,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 23:06:27,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 23:06:27,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993154498] [2020-07-20 23:06:27,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 23:06:27,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 23:06:27,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 23:06:27,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 23:06:27,246 INFO L87 Difference]: Start difference. First operand 183809 states and 280916 transitions. Second operand 3 states. [2020-07-20 23:06:45,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 23:06:45,482 INFO L93 Difference]: Finished difference Result 438481 states and 677885 transitions. [2020-07-20 23:06:45,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 23:06:45,483 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 336 [2020-07-20 23:06:45,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 23:06:45,839 INFO L225 Difference]: With dead ends: 438481 [2020-07-20 23:06:45,839 INFO L226 Difference]: Without dead ends: 275453 [2020-07-20 23:06:45,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 23:06:46,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275453 states. [2020-07-20 23:07:07,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275453 to 248377. [2020-07-20 23:07:07,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248377 states. [2020-07-20 23:07:07,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248377 states to 248377 states and 384004 transitions. [2020-07-20 23:07:07,439 INFO L78 Accepts]: Start accepts. Automaton has 248377 states and 384004 transitions. Word has length 336 [2020-07-20 23:07:07,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 23:07:07,440 INFO L479 AbstractCegarLoop]: Abstraction has 248377 states and 384004 transitions. [2020-07-20 23:07:07,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 23:07:07,440 INFO L276 IsEmpty]: Start isEmpty. Operand 248377 states and 384004 transitions. [2020-07-20 23:07:07,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-07-20 23:07:07,501 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 23:07:07,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 23:07:07,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:07:07,702 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 23:07:07,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 23:07:07,703 INFO L82 PathProgramCache]: Analyzing trace with hash 521224065, now seen corresponding path program 1 times [2020-07-20 23:07:07,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 23:07:07,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348720639] [2020-07-20 23:07:07,704 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:07:07,931 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 23:07:07,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 23:07:07,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 1015 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 23:07:07,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 23:07:07,985 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 23:07:07,985 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 23:07:07,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348720639] [2020-07-20 23:07:07,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 23:07:07,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 23:07:07,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231397901] [2020-07-20 23:07:07,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 23:07:07,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 23:07:07,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 23:07:07,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 23:07:07,987 INFO L87 Difference]: Start difference. First operand 248377 states and 384004 transitions. Second operand 4 states. [2020-07-20 23:07:32,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 23:07:32,825 INFO L93 Difference]: Finished difference Result 384201 states and 593087 transitions. [2020-07-20 23:07:32,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 23:07:32,826 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 336 [2020-07-20 23:07:32,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 23:07:33,228 INFO L225 Difference]: With dead ends: 384201 [2020-07-20 23:07:33,228 INFO L226 Difference]: Without dead ends: 316944 [2020-07-20 23:07:33,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 23:07:33,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316944 states. [2020-07-20 23:07:54,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316944 to 250327. [2020-07-20 23:07:54,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250327 states. [2020-07-20 23:07:55,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250327 states to 250327 states and 387060 transitions. [2020-07-20 23:07:55,317 INFO L78 Accepts]: Start accepts. Automaton has 250327 states and 387060 transitions. Word has length 336 [2020-07-20 23:07:55,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 23:07:55,318 INFO L479 AbstractCegarLoop]: Abstraction has 250327 states and 387060 transitions. [2020-07-20 23:07:55,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 23:07:55,318 INFO L276 IsEmpty]: Start isEmpty. Operand 250327 states and 387060 transitions. [2020-07-20 23:07:55,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-07-20 23:07:55,380 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 23:07:55,381 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 23:07:55,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:07:55,582 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 23:07:55,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 23:07:55,583 INFO L82 PathProgramCache]: Analyzing trace with hash 825625185, now seen corresponding path program 1 times [2020-07-20 23:07:55,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 23:07:55,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2088469124] [2020-07-20 23:07:55,584 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:07:55,809 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 23:07:55,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 23:07:55,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 23:07:55,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 23:07:55,881 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 23:07:55,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 23:07:55,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2088469124] [2020-07-20 23:07:55,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 23:07:55,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 23:07:55,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327301748] [2020-07-20 23:07:55,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 23:07:55,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 23:07:55,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 23:07:55,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 23:07:55,883 INFO L87 Difference]: Start difference. First operand 250327 states and 387060 transitions. Second operand 4 states. [2020-07-20 23:08:34,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 23:08:34,509 INFO L93 Difference]: Finished difference Result 739606 states and 1144520 transitions. [2020-07-20 23:08:34,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 23:08:34,509 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 336 [2020-07-20 23:08:34,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 23:08:35,784 INFO L225 Difference]: With dead ends: 739606 [2020-07-20 23:08:35,785 INFO L226 Difference]: Without dead ends: 496971 [2020-07-20 23:08:35,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 23:08:36,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496971 states. [2020-07-20 23:09:02,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496971 to 254561. [2020-07-20 23:09:02,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254561 states. [2020-07-20 23:09:02,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254561 states to 254561 states and 393374 transitions. [2020-07-20 23:09:02,421 INFO L78 Accepts]: Start accepts. Automaton has 254561 states and 393374 transitions. Word has length 336 [2020-07-20 23:09:02,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 23:09:02,422 INFO L479 AbstractCegarLoop]: Abstraction has 254561 states and 393374 transitions. [2020-07-20 23:09:02,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 23:09:02,422 INFO L276 IsEmpty]: Start isEmpty. Operand 254561 states and 393374 transitions. [2020-07-20 23:09:02,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-07-20 23:09:02,491 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 23:09:02,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 23:09:02,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:09:02,706 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 23:09:02,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 23:09:02,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1295780269, now seen corresponding path program 1 times [2020-07-20 23:09:02,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 23:09:02,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90799946] [2020-07-20 23:09:02,708 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:09:02,964 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 23:09:02,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 23:09:02,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 1162 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 23:09:02,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 23:09:03,021 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 23:09:03,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 23:09:03,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90799946] [2020-07-20 23:09:03,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 23:09:03,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 23:09:03,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214900705] [2020-07-20 23:09:03,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 23:09:03,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 23:09:03,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 23:09:03,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 23:09:03,023 INFO L87 Difference]: Start difference. First operand 254561 states and 393374 transitions. Second operand 4 states. [2020-07-20 23:09:25,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 23:09:25,602 INFO L93 Difference]: Finished difference Result 480750 states and 743534 transitions. [2020-07-20 23:09:25,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 23:09:25,604 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 336 [2020-07-20 23:09:25,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 23:09:25,921 INFO L225 Difference]: With dead ends: 480750 [2020-07-20 23:09:25,921 INFO L226 Difference]: Without dead ends: 234025 [2020-07-20 23:09:26,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 23:09:26,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234025 states. [2020-07-20 23:09:48,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234025 to 233691. [2020-07-20 23:09:48,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233691 states. [2020-07-20 23:09:48,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233691 states to 233691 states and 361537 transitions. [2020-07-20 23:09:48,654 INFO L78 Accepts]: Start accepts. Automaton has 233691 states and 361537 transitions. Word has length 336 [2020-07-20 23:09:48,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 23:09:48,655 INFO L479 AbstractCegarLoop]: Abstraction has 233691 states and 361537 transitions. [2020-07-20 23:09:48,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 23:09:48,655 INFO L276 IsEmpty]: Start isEmpty. Operand 233691 states and 361537 transitions. [2020-07-20 23:09:48,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-07-20 23:09:48,717 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 23:09:48,717 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 23:09:48,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:09:48,918 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 23:09:48,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 23:09:48,919 INFO L82 PathProgramCache]: Analyzing trace with hash 2041383761, now seen corresponding path program 1 times [2020-07-20 23:09:48,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 23:09:48,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590050040] [2020-07-20 23:09:48,920 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:09:49,162 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 23:09:49,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 23:09:49,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 1166 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 23:09:49,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 23:09:49,245 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 23:09:49,245 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 23:09:49,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590050040] [2020-07-20 23:09:49,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 23:09:49,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 23:09:49,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317454086] [2020-07-20 23:09:49,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 23:09:49,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 23:09:49,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 23:09:49,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 23:09:49,247 INFO L87 Difference]: Start difference. First operand 233691 states and 361537 transitions. Second operand 4 states. [2020-07-20 23:10:14,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 23:10:14,122 INFO L93 Difference]: Finished difference Result 476888 states and 736753 transitions. [2020-07-20 23:10:14,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 23:10:14,122 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 337 [2020-07-20 23:10:14,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 23:10:14,436 INFO L225 Difference]: With dead ends: 476888 [2020-07-20 23:10:14,437 INFO L226 Difference]: Without dead ends: 238901 [2020-07-20 23:10:14,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 23:10:14,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238901 states. [2020-07-20 23:10:32,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238901 to 238806. [2020-07-20 23:10:32,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238806 states. [2020-07-20 23:10:33,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238806 states to 238806 states and 367310 transitions. [2020-07-20 23:10:33,033 INFO L78 Accepts]: Start accepts. Automaton has 238806 states and 367310 transitions. Word has length 337 [2020-07-20 23:10:33,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 23:10:33,034 INFO L479 AbstractCegarLoop]: Abstraction has 238806 states and 367310 transitions. [2020-07-20 23:10:33,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 23:10:33,034 INFO L276 IsEmpty]: Start isEmpty. Operand 238806 states and 367310 transitions. [2020-07-20 23:10:33,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-07-20 23:10:33,121 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 23:10:33,121 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 23:10:33,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:10:33,335 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 23:10:33,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 23:10:33,336 INFO L82 PathProgramCache]: Analyzing trace with hash -473286796, now seen corresponding path program 1 times [2020-07-20 23:10:33,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 23:10:33,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523398788] [2020-07-20 23:10:33,337 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:10:33,613 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 23:10:33,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 23:10:33,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 1315 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 23:10:33,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 23:10:34,267 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 23:10:34,267 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 23:10:34,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523398788] [2020-07-20 23:10:34,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 23:10:34,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 23:10:34,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763379699] [2020-07-20 23:10:34,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 23:10:34,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 23:10:34,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 23:10:34,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 23:10:34,268 INFO L87 Difference]: Start difference. First operand 238806 states and 367310 transitions. Second operand 3 states. [2020-07-20 23:11:13,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 23:11:13,638 INFO L93 Difference]: Finished difference Result 684703 states and 1053512 transitions. [2020-07-20 23:11:13,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 23:11:13,639 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 339 [2020-07-20 23:11:13,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 23:11:14,272 INFO L225 Difference]: With dead ends: 684703 [2020-07-20 23:11:14,272 INFO L226 Difference]: Without dead ends: 454621 [2020-07-20 23:11:14,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 23:11:14,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454621 states. [2020-07-20 23:11:56,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454621 to 454528. [2020-07-20 23:11:56,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454528 states. [2020-07-20 23:11:57,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454528 states to 454528 states and 695868 transitions. [2020-07-20 23:11:57,666 INFO L78 Accepts]: Start accepts. Automaton has 454528 states and 695868 transitions. Word has length 339 [2020-07-20 23:11:57,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 23:11:57,667 INFO L479 AbstractCegarLoop]: Abstraction has 454528 states and 695868 transitions. [2020-07-20 23:11:57,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 23:11:57,667 INFO L276 IsEmpty]: Start isEmpty. Operand 454528 states and 695868 transitions. [2020-07-20 23:11:57,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-07-20 23:11:57,784 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 23:11:57,784 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 23:11:57,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:11:57,985 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 23:11:57,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 23:11:57,986 INFO L82 PathProgramCache]: Analyzing trace with hash -643992073, now seen corresponding path program 1 times [2020-07-20 23:11:57,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 23:11:57,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1420825409] [2020-07-20 23:11:57,987 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:11:58,266 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 23:11:58,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 23:11:58,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 1320 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 23:11:58,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 23:11:58,330 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 23:11:58,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 23:11:58,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1420825409] [2020-07-20 23:11:58,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 23:11:58,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 23:11:58,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317360961] [2020-07-20 23:11:58,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 23:11:58,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 23:11:58,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 23:11:58,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 23:11:58,332 INFO L87 Difference]: Start difference. First operand 454528 states and 695868 transitions. Second operand 3 states. [2020-07-20 23:13:02,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 23:13:02,303 INFO L93 Difference]: Finished difference Result 1140747 states and 1758128 transitions. [2020-07-20 23:13:02,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 23:13:02,303 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 341 [2020-07-20 23:13:02,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 23:13:03,388 INFO L225 Difference]: With dead ends: 1140747 [2020-07-20 23:13:03,388 INFO L226 Difference]: Without dead ends: 720702 [2020-07-20 23:13:03,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 23:13:04,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720702 states. [2020-07-20 23:14:21,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720702 to 654804. [2020-07-20 23:14:21,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 654804 states. [2020-07-20 23:14:22,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654804 states to 654804 states and 1016156 transitions. [2020-07-20 23:14:22,685 INFO L78 Accepts]: Start accepts. Automaton has 654804 states and 1016156 transitions. Word has length 341 [2020-07-20 23:14:22,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 23:14:22,685 INFO L479 AbstractCegarLoop]: Abstraction has 654804 states and 1016156 transitions. [2020-07-20 23:14:22,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 23:14:22,685 INFO L276 IsEmpty]: Start isEmpty. Operand 654804 states and 1016156 transitions. [2020-07-20 23:14:22,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-07-20 23:14:22,798 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 23:14:22,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 23:14:22,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:14:22,999 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 23:14:23,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 23:14:23,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1932134593, now seen corresponding path program 1 times [2020-07-20 23:14:23,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 23:14:23,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020099503] [2020-07-20 23:14:23,002 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 23:14:23,236 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 23:14:23,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 23:14:23,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 23:14:23,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 23:14:23,309 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 23:14:23,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 23:14:23,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020099503] [2020-07-20 23:14:23,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 23:14:23,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 23:14:23,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271907195] [2020-07-20 23:14:23,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 23:14:23,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 23:14:23,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 23:14:23,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 23:14:23,311 INFO L87 Difference]: Start difference. First operand 654804 states and 1016156 transitions. Second operand 4 states. [2020-07-20 23:15:32,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 23:15:32,431 INFO L93 Difference]: Finished difference Result 1288985 states and 1997022 transitions. [2020-07-20 23:15:32,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 23:15:32,431 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 342 [2020-07-20 23:15:32,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 23:15:33,397 INFO L225 Difference]: With dead ends: 1288985 [2020-07-20 23:15:33,397 INFO L226 Difference]: Without dead ends: 667927 [2020-07-20 23:15:33,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 23:15:34,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667927 states.