/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 02:24:01,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 02:24:01,708 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 02:24:01,728 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 02:24:01,728 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 02:24:01,730 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 02:24:01,733 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 02:24:01,744 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 02:24:01,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 02:24:01,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 02:24:01,751 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 02:24:01,752 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 02:24:01,752 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 02:24:01,753 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 02:24:01,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 02:24:01,755 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 02:24:01,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 02:24:01,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 02:24:01,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 02:24:01,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 02:24:01,761 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 02:24:01,762 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 02:24:01,763 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 02:24:01,764 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 02:24:01,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 02:24:01,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 02:24:01,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 02:24:01,774 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 02:24:01,775 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 02:24:01,789 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 02:24:01,790 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 02:24:01,791 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 02:24:01,791 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 02:24:01,791 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 02:24:01,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 02:24:01,792 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 02:24:01,792 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 02:24:01,792 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 02:24:01,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 02:24:01,792 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 02:24:01,793 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 02:24:01,793 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 02:24:01,793 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 02:24:01,793 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 02:24:01,793 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 02:24:01,794 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 02:24:01,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 02:24:01,794 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 02:24:01,794 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 02:24:01,794 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 02:24:01,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 02:24:01,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 02:24:01,795 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 02:24:01,795 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 02:24:01,795 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 02:24:01,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:01,796 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 02:24:01,796 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 02:24:01,796 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 02:24:02,136 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 02:24:02,150 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 02:24:02,154 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 02:24:02,156 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 02:24:02,156 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 02:24:02,157 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-21 02:24:02,220 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbef48a6c/8598b40fc05e4988a7a214c1b9e91e58/FLAGcf07f1c99 [2020-07-21 02:24:02,862 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 02:24:02,862 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-21 02:24:02,882 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbef48a6c/8598b40fc05e4988a7a214c1b9e91e58/FLAGcf07f1c99 [2020-07-21 02:24:03,001 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbef48a6c/8598b40fc05e4988a7a214c1b9e91e58 [2020-07-21 02:24:03,010 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 02:24:03,012 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 02:24:03,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 02:24:03,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 02:24:03,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 02:24:03,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:24:03" (1/1) ... [2020-07-21 02:24:03,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75624043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:24:03, skipping insertion in model container [2020-07-21 02:24:03,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:24:03" (1/1) ... [2020-07-21 02:24:03,030 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 02:24:03,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 02:24:04,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 02:24:04,724 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 02:24:05,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 02:24:05,787 INFO L208 MainTranslator]: Completed translation [2020-07-21 02:24:05,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:24:05 WrapperNode [2020-07-21 02:24:05,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 02:24:05,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 02:24:05,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 02:24:05,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 02:24:05,811 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:24:05" (1/1) ... [2020-07-21 02:24:05,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:24:05" (1/1) ... [2020-07-21 02:24:05,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:24:05" (1/1) ... [2020-07-21 02:24:05,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:24:05" (1/1) ... [2020-07-21 02:24:05,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:24:05" (1/1) ... [2020-07-21 02:24:06,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:24:05" (1/1) ... [2020-07-21 02:24:06,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:24:05" (1/1) ... [2020-07-21 02:24:06,054 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 02:24:06,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 02:24:06,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 02:24:06,055 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 02:24:06,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:24:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 02:24:06,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 02:24:06,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 02:24:06,141 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 02:24:06,141 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 02:24:06,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 02:24:06,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-21 02:24:06,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-07-21 02:24:06,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-21 02:24:06,142 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-07-21 02:24:06,142 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 02:24:06,143 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 02:24:06,143 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-07-21 02:24:06,143 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-07-21 02:24:06,143 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-07-21 02:24:06,144 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-07-21 02:24:06,144 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-07-21 02:24:06,144 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-07-21 02:24:06,144 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-07-21 02:24:06,144 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-21 02:24:06,145 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 02:24:06,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 02:24:06,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 02:24:09,540 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 02:24:09,541 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 02:24:09,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:24:09 BoogieIcfgContainer [2020-07-21 02:24:09,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 02:24:09,552 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 02:24:09,553 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 02:24:09,556 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 02:24:09,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:24:03" (1/3) ... [2020-07-21 02:24:09,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760527be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:24:09, skipping insertion in model container [2020-07-21 02:24:09,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:24:05" (2/3) ... [2020-07-21 02:24:09,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760527be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:24:09, skipping insertion in model container [2020-07-21 02:24:09,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:24:09" (3/3) ... [2020-07-21 02:24:09,559 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-21 02:24:09,570 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 02:24:09,580 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-07-21 02:24:09,596 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-07-21 02:24:09,626 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 02:24:09,626 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 02:24:09,626 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 02:24:09,627 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 02:24:09,627 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 02:24:09,627 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 02:24:09,627 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 02:24:09,627 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 02:24:09,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states. [2020-07-21 02:24:09,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-21 02:24:09,706 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:24:09,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:24:09,708 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:24:09,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:24:09,715 INFO L82 PathProgramCache]: Analyzing trace with hash -537993708, now seen corresponding path program 1 times [2020-07-21 02:24:09,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:24:09,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180957928] [2020-07-21 02:24:09,725 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:10,204 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 02:24:10,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:24:10,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 1591 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 02:24:10,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:24:10,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:24:10,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:24:10,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180957928] [2020-07-21 02:24:10,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:24:10,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 02:24:10,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827821390] [2020-07-21 02:24:10,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 02:24:10,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:24:10,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 02:24:10,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 02:24:10,595 INFO L87 Difference]: Start difference. First operand 1027 states. Second operand 4 states. [2020-07-21 02:24:10,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:24:10,910 INFO L93 Difference]: Finished difference Result 3027 states and 5427 transitions. [2020-07-21 02:24:10,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 02:24:10,912 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 327 [2020-07-21 02:24:10,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:24:10,941 INFO L225 Difference]: With dead ends: 3027 [2020-07-21 02:24:10,941 INFO L226 Difference]: Without dead ends: 2005 [2020-07-21 02:24:10,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 02:24:10,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2005 states. [2020-07-21 02:24:11,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2005 to 1904. [2020-07-21 02:24:11,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1904 states. [2020-07-21 02:24:11,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1904 states to 1904 states and 2895 transitions. [2020-07-21 02:24:11,093 INFO L78 Accepts]: Start accepts. Automaton has 1904 states and 2895 transitions. Word has length 327 [2020-07-21 02:24:11,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:24:11,094 INFO L479 AbstractCegarLoop]: Abstraction has 1904 states and 2895 transitions. [2020-07-21 02:24:11,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 02:24:11,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1904 states and 2895 transitions. [2020-07-21 02:24:11,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-07-21 02:24:11,104 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:24:11,104 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] [2020-07-21 02:24:11,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:11,318 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:24:11,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:24:11,319 INFO L82 PathProgramCache]: Analyzing trace with hash -2119643028, now seen corresponding path program 1 times [2020-07-21 02:24:11,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:24:11,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777287936] [2020-07-21 02:24:11,319 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:11,629 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 02:24:11,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:24:11,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 1317 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 02:24:11,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:24:11,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:24:11,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:24:11,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777287936] [2020-07-21 02:24:11,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:24:11,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:24:11,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441349969] [2020-07-21 02:24:11,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:24:11,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:24:11,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:24:11,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:24:11,789 INFO L87 Difference]: Start difference. First operand 1904 states and 2895 transitions. Second operand 3 states. [2020-07-21 02:24:11,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:24:11,938 INFO L93 Difference]: Finished difference Result 5671 states and 8621 transitions. [2020-07-21 02:24:11,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:24:11,938 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 329 [2020-07-21 02:24:11,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:24:11,959 INFO L225 Difference]: With dead ends: 5671 [2020-07-21 02:24:11,959 INFO L226 Difference]: Without dead ends: 3790 [2020-07-21 02:24:11,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:24:11,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3790 states. [2020-07-21 02:24:12,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3790 to 1915. [2020-07-21 02:24:12,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1915 states. [2020-07-21 02:24:12,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1915 states to 1915 states and 2911 transitions. [2020-07-21 02:24:12,090 INFO L78 Accepts]: Start accepts. Automaton has 1915 states and 2911 transitions. Word has length 329 [2020-07-21 02:24:12,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:24:12,090 INFO L479 AbstractCegarLoop]: Abstraction has 1915 states and 2911 transitions. [2020-07-21 02:24:12,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:24:12,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1915 states and 2911 transitions. [2020-07-21 02:24:12,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-07-21 02:24:12,101 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:24:12,102 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] [2020-07-21 02:24:12,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:12,317 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:24:12,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:24:12,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1677044561, now seen corresponding path program 1 times [2020-07-21 02:24:12,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:24:12,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556721865] [2020-07-21 02:24:12,319 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:12,632 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 02:24:12,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:24:12,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 1594 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 02:24:12,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:24:12,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:24:12,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:24:12,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556721865] [2020-07-21 02:24:12,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:24:12,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:24:12,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401528052] [2020-07-21 02:24:12,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:24:12,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:24:12,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:24:12,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:24:12,833 INFO L87 Difference]: Start difference. First operand 1915 states and 2911 transitions. Second operand 3 states. [2020-07-21 02:24:13,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:24:13,067 INFO L93 Difference]: Finished difference Result 5504 states and 8321 transitions. [2020-07-21 02:24:13,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:24:13,068 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 329 [2020-07-21 02:24:13,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:24:13,087 INFO L225 Difference]: With dead ends: 5504 [2020-07-21 02:24:13,087 INFO L226 Difference]: Without dead ends: 3740 [2020-07-21 02:24:13,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:24:13,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3740 states. [2020-07-21 02:24:13,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3740 to 3641. [2020-07-21 02:24:13,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3641 states. [2020-07-21 02:24:13,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3641 states to 3641 states and 5529 transitions. [2020-07-21 02:24:13,261 INFO L78 Accepts]: Start accepts. Automaton has 3641 states and 5529 transitions. Word has length 329 [2020-07-21 02:24:13,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:24:13,264 INFO L479 AbstractCegarLoop]: Abstraction has 3641 states and 5529 transitions. [2020-07-21 02:24:13,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:24:13,264 INFO L276 IsEmpty]: Start isEmpty. Operand 3641 states and 5529 transitions. [2020-07-21 02:24:13,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-07-21 02:24:13,276 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:24:13,276 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:24:13,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:13,490 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:24:13,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:24:13,491 INFO L82 PathProgramCache]: Analyzing trace with hash -591387259, now seen corresponding path program 1 times [2020-07-21 02:24:13,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:24:13,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529424397] [2020-07-21 02:24:13,492 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:13,812 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 02:24:13,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:24:13,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 02:24:13,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:24:13,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:24:13,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:24:13,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529424397] [2020-07-21 02:24:13,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:24:13,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:24:13,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423973240] [2020-07-21 02:24:13,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:24:13,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:24:13,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:24:13,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:24:13,953 INFO L87 Difference]: Start difference. First operand 3641 states and 5529 transitions. Second operand 3 states. [2020-07-21 02:24:14,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:24:14,179 INFO L93 Difference]: Finished difference Result 10828 states and 16433 transitions. [2020-07-21 02:24:14,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:24:14,180 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 330 [2020-07-21 02:24:14,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:24:14,213 INFO L225 Difference]: With dead ends: 10828 [2020-07-21 02:24:14,213 INFO L226 Difference]: Without dead ends: 7237 [2020-07-21 02:24:14,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:24:14,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7237 states. [2020-07-21 02:24:14,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7237 to 3657. [2020-07-21 02:24:14,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3657 states. [2020-07-21 02:24:14,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3657 states to 3657 states and 5548 transitions. [2020-07-21 02:24:14,402 INFO L78 Accepts]: Start accepts. Automaton has 3657 states and 5548 transitions. Word has length 330 [2020-07-21 02:24:14,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:24:14,403 INFO L479 AbstractCegarLoop]: Abstraction has 3657 states and 5548 transitions. [2020-07-21 02:24:14,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:24:14,403 INFO L276 IsEmpty]: Start isEmpty. Operand 3657 states and 5548 transitions. [2020-07-21 02:24:14,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-07-21 02:24:14,419 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:24:14,419 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:24:14,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:14,634 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:24:14,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:24:14,635 INFO L82 PathProgramCache]: Analyzing trace with hash -979200554, now seen corresponding path program 1 times [2020-07-21 02:24:14,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:24:14,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721049324] [2020-07-21 02:24:14,635 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:14,927 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 02:24:14,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:24:14,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 1315 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 02:24:14,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:24:15,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:24:15,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:24:15,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721049324] [2020-07-21 02:24:15,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:24:15,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 02:24:15,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595930921] [2020-07-21 02:24:15,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 02:24:15,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:24:15,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 02:24:15,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 02:24:15,055 INFO L87 Difference]: Start difference. First operand 3657 states and 5548 transitions. Second operand 4 states. [2020-07-21 02:24:15,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:24:15,357 INFO L93 Difference]: Finished difference Result 8097 states and 12284 transitions. [2020-07-21 02:24:15,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 02:24:15,358 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 331 [2020-07-21 02:24:15,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:24:15,386 INFO L225 Difference]: With dead ends: 8097 [2020-07-21 02:24:15,387 INFO L226 Difference]: Without dead ends: 4142 [2020-07-21 02:24:15,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 02:24:15,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4142 states. [2020-07-21 02:24:15,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4142 to 4043. [2020-07-21 02:24:15,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4043 states. [2020-07-21 02:24:15,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4043 states to 4043 states and 6116 transitions. [2020-07-21 02:24:15,653 INFO L78 Accepts]: Start accepts. Automaton has 4043 states and 6116 transitions. Word has length 331 [2020-07-21 02:24:15,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:24:15,654 INFO L479 AbstractCegarLoop]: Abstraction has 4043 states and 6116 transitions. [2020-07-21 02:24:15,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 02:24:15,654 INFO L276 IsEmpty]: Start isEmpty. Operand 4043 states and 6116 transitions. [2020-07-21 02:24:15,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-21 02:24:15,670 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:24:15,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:24:15,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:15,884 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:24:15,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:24:15,885 INFO L82 PathProgramCache]: Analyzing trace with hash 518618689, now seen corresponding path program 1 times [2020-07-21 02:24:15,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:24:15,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802549737] [2020-07-21 02:24:15,886 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:16,179 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 02:24:16,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:24:16,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 1321 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 02:24:16,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:24:16,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:24:16,307 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:24:16,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802549737] [2020-07-21 02:24:16,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:24:16,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:24:16,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363143457] [2020-07-21 02:24:16,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:24:16,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:24:16,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:24:16,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:24:16,311 INFO L87 Difference]: Start difference. First operand 4043 states and 6116 transitions. Second operand 3 states. [2020-07-21 02:24:16,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:24:16,573 INFO L93 Difference]: Finished difference Result 11715 states and 17689 transitions. [2020-07-21 02:24:16,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:24:16,574 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 333 [2020-07-21 02:24:16,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:24:16,607 INFO L225 Difference]: With dead ends: 11715 [2020-07-21 02:24:16,607 INFO L226 Difference]: Without dead ends: 7714 [2020-07-21 02:24:16,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:24:16,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7714 states. [2020-07-21 02:24:16,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7714 to 4038. [2020-07-21 02:24:16,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4038 states. [2020-07-21 02:24:16,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4038 states to 4038 states and 6105 transitions. [2020-07-21 02:24:16,820 INFO L78 Accepts]: Start accepts. Automaton has 4038 states and 6105 transitions. Word has length 333 [2020-07-21 02:24:16,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:24:16,821 INFO L479 AbstractCegarLoop]: Abstraction has 4038 states and 6105 transitions. [2020-07-21 02:24:16,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:24:16,821 INFO L276 IsEmpty]: Start isEmpty. Operand 4038 states and 6105 transitions. [2020-07-21 02:24:16,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-21 02:24:16,831 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:24:16,832 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:24:17,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:17,046 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:24:17,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:24:17,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1976118812, now seen corresponding path program 1 times [2020-07-21 02:24:17,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:24:17,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763766504] [2020-07-21 02:24:17,048 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:17,318 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 02:24:17,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:24:17,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 1323 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 02:24:17,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:24:17,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:24:17,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:24:17,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763766504] [2020-07-21 02:24:17,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:24:17,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 02:24:17,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237611429] [2020-07-21 02:24:17,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 02:24:17,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:24:17,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 02:24:17,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 02:24:17,412 INFO L87 Difference]: Start difference. First operand 4038 states and 6105 transitions. Second operand 4 states. [2020-07-21 02:24:17,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:24:17,755 INFO L93 Difference]: Finished difference Result 11548 states and 17355 transitions. [2020-07-21 02:24:17,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 02:24:17,756 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 333 [2020-07-21 02:24:17,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:24:17,778 INFO L225 Difference]: With dead ends: 11548 [2020-07-21 02:24:17,779 INFO L226 Difference]: Without dead ends: 7913 [2020-07-21 02:24:17,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 02:24:17,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7913 states. [2020-07-21 02:24:18,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7913 to 4338. [2020-07-21 02:24:18,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4338 states. [2020-07-21 02:24:18,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4338 states to 4338 states and 6615 transitions. [2020-07-21 02:24:18,098 INFO L78 Accepts]: Start accepts. Automaton has 4338 states and 6615 transitions. Word has length 333 [2020-07-21 02:24:18,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:24:18,098 INFO L479 AbstractCegarLoop]: Abstraction has 4338 states and 6615 transitions. [2020-07-21 02:24:18,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 02:24:18,099 INFO L276 IsEmpty]: Start isEmpty. Operand 4338 states and 6615 transitions. [2020-07-21 02:24:18,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-21 02:24:18,114 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:24:18,115 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:24:18,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:18,329 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:24:18,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:24:18,330 INFO L82 PathProgramCache]: Analyzing trace with hash -156138669, now seen corresponding path program 1 times [2020-07-21 02:24:18,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:24:18,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812698783] [2020-07-21 02:24:18,331 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:18,667 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 02:24:18,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:24:18,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 1597 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 02:24:18,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:24:18,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:24:18,831 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:24:18,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812698783] [2020-07-21 02:24:18,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:24:18,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:24:18,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784537759] [2020-07-21 02:24:18,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:24:18,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:24:18,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:24:18,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:24:18,836 INFO L87 Difference]: Start difference. First operand 4338 states and 6615 transitions. Second operand 3 states. [2020-07-21 02:24:19,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:24:19,301 INFO L93 Difference]: Finished difference Result 12091 states and 18280 transitions. [2020-07-21 02:24:19,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:24:19,302 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 333 [2020-07-21 02:24:19,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:24:19,322 INFO L225 Difference]: With dead ends: 12091 [2020-07-21 02:24:19,323 INFO L226 Difference]: Without dead ends: 8276 [2020-07-21 02:24:19,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:24:19,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8276 states. [2020-07-21 02:24:19,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8276 to 8160. [2020-07-21 02:24:19,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8160 states. [2020-07-21 02:24:19,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8160 states to 8160 states and 12359 transitions. [2020-07-21 02:24:19,672 INFO L78 Accepts]: Start accepts. Automaton has 8160 states and 12359 transitions. Word has length 333 [2020-07-21 02:24:19,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:24:19,673 INFO L479 AbstractCegarLoop]: Abstraction has 8160 states and 12359 transitions. [2020-07-21 02:24:19,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:24:19,673 INFO L276 IsEmpty]: Start isEmpty. Operand 8160 states and 12359 transitions. [2020-07-21 02:24:19,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-21 02:24:19,691 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:24:19,692 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:24:19,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:19,907 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:24:19,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:24:19,907 INFO L82 PathProgramCache]: Analyzing trace with hash -506759930, now seen corresponding path program 1 times [2020-07-21 02:24:19,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:24:19,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305050706] [2020-07-21 02:24:19,908 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:20,222 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 02:24:20,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:24:20,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 1653 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 02:24:20,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:24:20,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:24:20,502 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:24:20,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305050706] [2020-07-21 02:24:20,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:24:20,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-21 02:24:20,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646473667] [2020-07-21 02:24:20,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 02:24:20,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:24:20,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 02:24:20,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-21 02:24:20,508 INFO L87 Difference]: Start difference. First operand 8160 states and 12359 transitions. Second operand 8 states. [2020-07-21 02:24:23,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:24:23,331 INFO L93 Difference]: Finished difference Result 18416 states and 27853 transitions. [2020-07-21 02:24:23,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-21 02:24:23,332 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 333 [2020-07-21 02:24:23,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:24:23,363 INFO L225 Difference]: With dead ends: 18416 [2020-07-21 02:24:23,363 INFO L226 Difference]: Without dead ends: 13184 [2020-07-21 02:24:23,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-07-21 02:24:23,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13184 states. [2020-07-21 02:24:24,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13184 to 10428. [2020-07-21 02:24:24,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10428 states. [2020-07-21 02:24:24,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10428 states to 10428 states and 15687 transitions. [2020-07-21 02:24:24,105 INFO L78 Accepts]: Start accepts. Automaton has 10428 states and 15687 transitions. Word has length 333 [2020-07-21 02:24:24,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:24:24,106 INFO L479 AbstractCegarLoop]: Abstraction has 10428 states and 15687 transitions. [2020-07-21 02:24:24,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 02:24:24,106 INFO L276 IsEmpty]: Start isEmpty. Operand 10428 states and 15687 transitions. [2020-07-21 02:24:24,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-21 02:24:24,123 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:24:24,124 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:24:24,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:24,337 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:24:24,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:24:24,337 INFO L82 PathProgramCache]: Analyzing trace with hash 329818391, now seen corresponding path program 1 times [2020-07-21 02:24:24,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:24:24,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348170373] [2020-07-21 02:24:24,339 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:24,663 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 02:24:24,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:24:24,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 1649 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 02:24:24,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:24:24,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:24:24,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:24:24,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348170373] [2020-07-21 02:24:24,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:24:24,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:24:24,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054769331] [2020-07-21 02:24:24,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:24:24,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:24:24,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:24:24,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:24:24,746 INFO L87 Difference]: Start difference. First operand 10428 states and 15687 transitions. Second operand 3 states. [2020-07-21 02:24:25,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:24:25,259 INFO L93 Difference]: Finished difference Result 20342 states and 30558 transitions. [2020-07-21 02:24:25,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:24:25,260 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 333 [2020-07-21 02:24:25,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:24:25,286 INFO L225 Difference]: With dead ends: 20342 [2020-07-21 02:24:25,286 INFO L226 Difference]: Without dead ends: 12484 [2020-07-21 02:24:25,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:24:25,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12484 states. [2020-07-21 02:24:25,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12484 to 11130. [2020-07-21 02:24:25,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11130 states. [2020-07-21 02:24:26,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11130 states to 11130 states and 16845 transitions. [2020-07-21 02:24:26,011 INFO L78 Accepts]: Start accepts. Automaton has 11130 states and 16845 transitions. Word has length 333 [2020-07-21 02:24:26,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:24:26,012 INFO L479 AbstractCegarLoop]: Abstraction has 11130 states and 16845 transitions. [2020-07-21 02:24:26,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:24:26,012 INFO L276 IsEmpty]: Start isEmpty. Operand 11130 states and 16845 transitions. [2020-07-21 02:24:26,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-21 02:24:26,027 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:24:26,028 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:24:26,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:26,242 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:24:26,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:24:26,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1493066537, now seen corresponding path program 1 times [2020-07-21 02:24:26,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:24:26,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190912030] [2020-07-21 02:24:26,244 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:26,501 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 02:24:26,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:24:26,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 1319 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 02:24:26,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:24:26,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:24:26,579 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:24:26,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190912030] [2020-07-21 02:24:26,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:24:26,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:24:26,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241896903] [2020-07-21 02:24:26,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:24:26,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:24:26,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:24:26,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:24:26,581 INFO L87 Difference]: Start difference. First operand 11130 states and 16845 transitions. Second operand 3 states. [2020-07-21 02:24:27,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:24:27,883 INFO L93 Difference]: Finished difference Result 32995 states and 49913 transitions. [2020-07-21 02:24:27,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:24:27,884 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 333 [2020-07-21 02:24:27,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:24:27,919 INFO L225 Difference]: With dead ends: 32995 [2020-07-21 02:24:27,919 INFO L226 Difference]: Without dead ends: 22079 [2020-07-21 02:24:27,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:24:27,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22079 states. [2020-07-21 02:24:28,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22079 to 11199. [2020-07-21 02:24:28,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11199 states. [2020-07-21 02:24:28,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11199 states to 11199 states and 16938 transitions. [2020-07-21 02:24:28,521 INFO L78 Accepts]: Start accepts. Automaton has 11199 states and 16938 transitions. Word has length 333 [2020-07-21 02:24:28,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:24:28,521 INFO L479 AbstractCegarLoop]: Abstraction has 11199 states and 16938 transitions. [2020-07-21 02:24:28,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:24:28,521 INFO L276 IsEmpty]: Start isEmpty. Operand 11199 states and 16938 transitions. [2020-07-21 02:24:28,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-07-21 02:24:28,532 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:24:28,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:24:28,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:28,739 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:24:28,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:24:28,740 INFO L82 PathProgramCache]: Analyzing trace with hash -490341952, now seen corresponding path program 1 times [2020-07-21 02:24:28,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:24:28,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138788611] [2020-07-21 02:24:28,741 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:29,098 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 02:24:29,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:24:29,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 1319 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 02:24:29,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:24:29,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:24:29,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:24:29,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138788611] [2020-07-21 02:24:29,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:24:29,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:24:29,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305344962] [2020-07-21 02:24:29,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:24:29,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:24:29,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:24:29,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:24:29,182 INFO L87 Difference]: Start difference. First operand 11199 states and 16938 transitions. Second operand 3 states. [2020-07-21 02:24:30,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:24:30,558 INFO L93 Difference]: Finished difference Result 33052 states and 49969 transitions. [2020-07-21 02:24:30,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:24:30,558 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 334 [2020-07-21 02:24:30,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:24:30,586 INFO L225 Difference]: With dead ends: 33052 [2020-07-21 02:24:30,587 INFO L226 Difference]: Without dead ends: 22144 [2020-07-21 02:24:30,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:24:30,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22144 states. [2020-07-21 02:24:31,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22144 to 11284. [2020-07-21 02:24:31,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11284 states. [2020-07-21 02:24:31,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11284 states to 11284 states and 17037 transitions. [2020-07-21 02:24:31,349 INFO L78 Accepts]: Start accepts. Automaton has 11284 states and 17037 transitions. Word has length 334 [2020-07-21 02:24:31,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:24:31,350 INFO L479 AbstractCegarLoop]: Abstraction has 11284 states and 17037 transitions. [2020-07-21 02:24:31,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:24:31,350 INFO L276 IsEmpty]: Start isEmpty. Operand 11284 states and 17037 transitions. [2020-07-21 02:24:31,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-07-21 02:24:31,361 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:24:31,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:24:31,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:31,568 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:24:31,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:24:31,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1379273382, now seen corresponding path program 1 times [2020-07-21 02:24:31,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:24:31,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139573077] [2020-07-21 02:24:31,570 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:31,847 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 02:24:31,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:24:31,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 1324 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 02:24:31,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:24:31,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:24:31,917 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:24:31,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139573077] [2020-07-21 02:24:31,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:24:31,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 02:24:31,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240750065] [2020-07-21 02:24:31,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 02:24:31,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:24:31,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 02:24:31,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 02:24:31,919 INFO L87 Difference]: Start difference. First operand 11284 states and 17037 transitions. Second operand 4 states. [2020-07-21 02:24:32,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:24:32,959 INFO L93 Difference]: Finished difference Result 32331 states and 48589 transitions. [2020-07-21 02:24:32,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 02:24:32,959 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 335 [2020-07-21 02:24:32,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:24:32,979 INFO L225 Difference]: With dead ends: 32331 [2020-07-21 02:24:32,979 INFO L226 Difference]: Without dead ends: 22191 [2020-07-21 02:24:32,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 02:24:33,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22191 states. [2020-07-21 02:24:33,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22191 to 12311. [2020-07-21 02:24:33,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12311 states. [2020-07-21 02:24:33,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12311 states to 12311 states and 18687 transitions. [2020-07-21 02:24:33,537 INFO L78 Accepts]: Start accepts. Automaton has 12311 states and 18687 transitions. Word has length 335 [2020-07-21 02:24:33,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:24:33,537 INFO L479 AbstractCegarLoop]: Abstraction has 12311 states and 18687 transitions. [2020-07-21 02:24:33,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 02:24:33,537 INFO L276 IsEmpty]: Start isEmpty. Operand 12311 states and 18687 transitions. [2020-07-21 02:24:33,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-07-21 02:24:33,550 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:24:33,550 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:24:33,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:33,751 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:24:33,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:24:33,752 INFO L82 PathProgramCache]: Analyzing trace with hash 253581998, now seen corresponding path program 1 times [2020-07-21 02:24:33,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:24:33,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455211876] [2020-07-21 02:24:33,753 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:34,021 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 02:24:34,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:24:34,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 1320 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 02:24:34,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:24:34,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:24:34,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:24:34,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455211876] [2020-07-21 02:24:34,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:24:34,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 02:24:34,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354000134] [2020-07-21 02:24:34,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 02:24:34,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:24:34,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 02:24:34,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 02:24:34,103 INFO L87 Difference]: Start difference. First operand 12311 states and 18687 transitions. Second operand 4 states. [2020-07-21 02:24:35,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:24:35,052 INFO L93 Difference]: Finished difference Result 26310 states and 39707 transitions. [2020-07-21 02:24:35,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 02:24:35,052 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 335 [2020-07-21 02:24:35,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:24:35,071 INFO L225 Difference]: With dead ends: 26310 [2020-07-21 02:24:35,071 INFO L226 Difference]: Without dead ends: 13892 [2020-07-21 02:24:35,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 02:24:35,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13892 states. [2020-07-21 02:24:35,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13892 to 13768. [2020-07-21 02:24:35,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13768 states. [2020-07-21 02:24:35,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13768 states to 13768 states and 20680 transitions. [2020-07-21 02:24:35,680 INFO L78 Accepts]: Start accepts. Automaton has 13768 states and 20680 transitions. Word has length 335 [2020-07-21 02:24:35,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:24:35,681 INFO L479 AbstractCegarLoop]: Abstraction has 13768 states and 20680 transitions. [2020-07-21 02:24:35,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 02:24:35,681 INFO L276 IsEmpty]: Start isEmpty. Operand 13768 states and 20680 transitions. [2020-07-21 02:24:35,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-07-21 02:24:35,691 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:24:35,692 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:24:35,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:35,893 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:24:35,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:24:35,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1042982806, now seen corresponding path program 1 times [2020-07-21 02:24:35,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:24:35,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021311653] [2020-07-21 02:24:35,895 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:36,200 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 02:24:36,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:24:36,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 1599 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 02:24:36,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:24:36,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:24:36,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:24:36,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021311653] [2020-07-21 02:24:36,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:24:36,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:24:36,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211629671] [2020-07-21 02:24:36,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:24:36,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:24:36,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:24:36,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:24:36,280 INFO L87 Difference]: Start difference. First operand 13768 states and 20680 transitions. Second operand 3 states. [2020-07-21 02:24:37,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:24:37,525 INFO L93 Difference]: Finished difference Result 26942 states and 40621 transitions. [2020-07-21 02:24:37,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:24:37,525 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 335 [2020-07-21 02:24:37,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:24:37,544 INFO L225 Difference]: With dead ends: 26942 [2020-07-21 02:24:37,544 INFO L226 Difference]: Without dead ends: 18440 [2020-07-21 02:24:37,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:24:37,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18440 states. [2020-07-21 02:24:38,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18440 to 16348. [2020-07-21 02:24:38,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16348 states. [2020-07-21 02:24:38,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16348 states to 16348 states and 24748 transitions. [2020-07-21 02:24:38,273 INFO L78 Accepts]: Start accepts. Automaton has 16348 states and 24748 transitions. Word has length 335 [2020-07-21 02:24:38,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:24:38,273 INFO L479 AbstractCegarLoop]: Abstraction has 16348 states and 24748 transitions. [2020-07-21 02:24:38,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:24:38,273 INFO L276 IsEmpty]: Start isEmpty. Operand 16348 states and 24748 transitions. [2020-07-21 02:24:38,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-07-21 02:24:38,284 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:24:38,284 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:24:38,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:38,485 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:24:38,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:24:38,486 INFO L82 PathProgramCache]: Analyzing trace with hash 974019521, now seen corresponding path program 1 times [2020-07-21 02:24:38,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:24:38,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008001941] [2020-07-21 02:24:38,488 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:38,815 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 02:24:38,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:24:38,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 1594 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 02:24:38,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:24:39,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:24:39,049 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:24:39,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008001941] [2020-07-21 02:24:39,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:24:39,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:24:39,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683002585] [2020-07-21 02:24:39,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:24:39,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:24:39,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:24:39,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:24:39,052 INFO L87 Difference]: Start difference. First operand 16348 states and 24748 transitions. Second operand 3 states. [2020-07-21 02:24:40,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:24:40,378 INFO L93 Difference]: Finished difference Result 44346 states and 66764 transitions. [2020-07-21 02:24:40,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:24:40,378 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 335 [2020-07-21 02:24:40,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:24:40,414 INFO L225 Difference]: With dead ends: 44346 [2020-07-21 02:24:40,415 INFO L226 Difference]: Without dead ends: 30520 [2020-07-21 02:24:40,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:24:40,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30520 states. [2020-07-21 02:24:41,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30520 to 30423. [2020-07-21 02:24:41,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30423 states. [2020-07-21 02:24:42,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30423 states to 30423 states and 45687 transitions. [2020-07-21 02:24:42,003 INFO L78 Accepts]: Start accepts. Automaton has 30423 states and 45687 transitions. Word has length 335 [2020-07-21 02:24:42,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:24:42,004 INFO L479 AbstractCegarLoop]: Abstraction has 30423 states and 45687 transitions. [2020-07-21 02:24:42,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:24:42,004 INFO L276 IsEmpty]: Start isEmpty. Operand 30423 states and 45687 transitions. [2020-07-21 02:24:42,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-07-21 02:24:42,023 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:24:42,023 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:24:42,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:42,238 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:24:42,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:24:42,239 INFO L82 PathProgramCache]: Analyzing trace with hash 399736853, now seen corresponding path program 1 times [2020-07-21 02:24:42,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:24:42,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182687848] [2020-07-21 02:24:42,240 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:42,556 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 02:24:42,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:24:42,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 02:24:42,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:24:42,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:24:42,707 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:24:42,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182687848] [2020-07-21 02:24:42,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:24:42,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 02:24:42,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297944130] [2020-07-21 02:24:42,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 02:24:42,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:24:42,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 02:24:42,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 02:24:42,723 INFO L87 Difference]: Start difference. First operand 30423 states and 45687 transitions. Second operand 5 states. [2020-07-21 02:24:45,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:24:45,039 INFO L93 Difference]: Finished difference Result 52787 states and 79246 transitions. [2020-07-21 02:24:45,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 02:24:45,039 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 336 [2020-07-21 02:24:45,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:24:45,073 INFO L225 Difference]: With dead ends: 52787 [2020-07-21 02:24:45,073 INFO L226 Difference]: Without dead ends: 30423 [2020-07-21 02:24:45,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-07-21 02:24:45,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30423 states. [2020-07-21 02:24:47,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30423 to 30423. [2020-07-21 02:24:47,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30423 states. [2020-07-21 02:24:47,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30423 states to 30423 states and 45357 transitions. [2020-07-21 02:24:47,654 INFO L78 Accepts]: Start accepts. Automaton has 30423 states and 45357 transitions. Word has length 336 [2020-07-21 02:24:47,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:24:47,655 INFO L479 AbstractCegarLoop]: Abstraction has 30423 states and 45357 transitions. [2020-07-21 02:24:47,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 02:24:47,655 INFO L276 IsEmpty]: Start isEmpty. Operand 30423 states and 45357 transitions. [2020-07-21 02:24:47,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-07-21 02:24:47,676 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:24:47,677 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:24:47,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:47,890 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:24:47,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:24:47,891 INFO L82 PathProgramCache]: Analyzing trace with hash -47782950, now seen corresponding path program 1 times [2020-07-21 02:24:47,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:24:47,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238484638] [2020-07-21 02:24:47,892 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:48,217 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 02:24:48,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:24:48,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 1604 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 02:24:48,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:24:48,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:24:48,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:24:48,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238484638] [2020-07-21 02:24:48,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:24:48,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 02:24:48,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649310982] [2020-07-21 02:24:48,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 02:24:48,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:24:48,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 02:24:48,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 02:24:48,330 INFO L87 Difference]: Start difference. First operand 30423 states and 45357 transitions. Second operand 4 states. [2020-07-21 02:24:51,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:24:51,432 INFO L93 Difference]: Finished difference Result 87733 states and 130661 transitions. [2020-07-21 02:24:51,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 02:24:51,433 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 336 [2020-07-21 02:24:51,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:24:51,499 INFO L225 Difference]: With dead ends: 87733 [2020-07-21 02:24:51,499 INFO L226 Difference]: Without dead ends: 57856 [2020-07-21 02:24:51,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 02:24:51,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57856 states. [2020-07-21 02:24:54,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57856 to 57782. [2020-07-21 02:24:54,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57782 states. [2020-07-21 02:24:54,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57782 states to 57782 states and 85564 transitions. [2020-07-21 02:24:54,734 INFO L78 Accepts]: Start accepts. Automaton has 57782 states and 85564 transitions. Word has length 336 [2020-07-21 02:24:54,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:24:54,734 INFO L479 AbstractCegarLoop]: Abstraction has 57782 states and 85564 transitions. [2020-07-21 02:24:54,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 02:24:54,734 INFO L276 IsEmpty]: Start isEmpty. Operand 57782 states and 85564 transitions. [2020-07-21 02:24:54,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-07-21 02:24:54,769 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:24:54,769 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:24:54,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:54,970 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:24:54,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:24:54,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1580338063, now seen corresponding path program 1 times [2020-07-21 02:24:54,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:24:54,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343500697] [2020-07-21 02:24:54,972 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:24:55,244 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 02:24:55,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:24:55,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 1330 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 02:24:55,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:24:55,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:24:55,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:24:55,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343500697] [2020-07-21 02:24:55,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:24:55,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:24:55,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846943349] [2020-07-21 02:24:55,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:24:55,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:24:55,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:24:55,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:24:55,302 INFO L87 Difference]: Start difference. First operand 57782 states and 85564 transitions. Second operand 3 states. [2020-07-21 02:25:01,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:25:01,742 INFO L93 Difference]: Finished difference Result 161867 states and 238616 transitions. [2020-07-21 02:25:01,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:25:01,742 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 337 [2020-07-21 02:25:01,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:25:01,866 INFO L225 Difference]: With dead ends: 161867 [2020-07-21 02:25:01,866 INFO L226 Difference]: Without dead ends: 109465 [2020-07-21 02:25:01,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:25:01,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109465 states. [2020-07-21 02:25:07,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109465 to 58485. [2020-07-21 02:25:07,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58485 states. [2020-07-21 02:25:07,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58485 states to 58485 states and 86331 transitions. [2020-07-21 02:25:07,482 INFO L78 Accepts]: Start accepts. Automaton has 58485 states and 86331 transitions. Word has length 337 [2020-07-21 02:25:07,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:25:07,483 INFO L479 AbstractCegarLoop]: Abstraction has 58485 states and 86331 transitions. [2020-07-21 02:25:07,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:25:07,483 INFO L276 IsEmpty]: Start isEmpty. Operand 58485 states and 86331 transitions. [2020-07-21 02:25:07,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-07-21 02:25:07,516 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:25:07,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:25:07,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:25:07,718 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:25:07,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:25:07,718 INFO L82 PathProgramCache]: Analyzing trace with hash -510440838, now seen corresponding path program 1 times [2020-07-21 02:25:07,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:25:07,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803851266] [2020-07-21 02:25:07,719 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:25:08,031 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 02:25:08,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:25:08,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 1607 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 02:25:08,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:25:08,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:25:08,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:25:08,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803851266] [2020-07-21 02:25:08,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:25:08,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:25:08,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337157030] [2020-07-21 02:25:08,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:25:08,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:25:08,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:25:08,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:25:08,153 INFO L87 Difference]: Start difference. First operand 58485 states and 86331 transitions. Second operand 3 states. [2020-07-21 02:25:14,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:25:14,365 INFO L93 Difference]: Finished difference Result 166433 states and 244929 transitions. [2020-07-21 02:25:14,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:25:14,366 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 338 [2020-07-21 02:25:14,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:25:14,498 INFO L225 Difference]: With dead ends: 166433 [2020-07-21 02:25:14,498 INFO L226 Difference]: Without dead ends: 113274 [2020-07-21 02:25:14,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:25:14,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113274 states. [2020-07-21 02:25:23,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113274 to 113187. [2020-07-21 02:25:23,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113187 states. [2020-07-21 02:25:23,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113187 states to 113187 states and 165631 transitions. [2020-07-21 02:25:23,630 INFO L78 Accepts]: Start accepts. Automaton has 113187 states and 165631 transitions. Word has length 338 [2020-07-21 02:25:23,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:25:23,630 INFO L479 AbstractCegarLoop]: Abstraction has 113187 states and 165631 transitions. [2020-07-21 02:25:23,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:25:23,630 INFO L276 IsEmpty]: Start isEmpty. Operand 113187 states and 165631 transitions. [2020-07-21 02:25:23,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-07-21 02:25:23,698 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:25:23,698 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] [2020-07-21 02:25:23,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:25:23,899 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:25:23,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:25:23,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1049649648, now seen corresponding path program 1 times [2020-07-21 02:25:23,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:25:23,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344123015] [2020-07-21 02:25:23,901 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:25:24,177 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 02:25:24,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:25:24,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 1333 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 02:25:24,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:25:24,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:25:24,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:25:24,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344123015] [2020-07-21 02:25:24,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:25:24,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 02:25:24,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784950222] [2020-07-21 02:25:24,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 02:25:24,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:25:24,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 02:25:24,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 02:25:24,252 INFO L87 Difference]: Start difference. First operand 113187 states and 165631 transitions. Second operand 4 states. [2020-07-21 02:25:32,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:25:32,931 INFO L93 Difference]: Finished difference Result 213623 states and 312069 transitions. [2020-07-21 02:25:32,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 02:25:32,932 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 339 [2020-07-21 02:25:32,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:25:33,061 INFO L225 Difference]: With dead ends: 213623 [2020-07-21 02:25:33,062 INFO L226 Difference]: Without dead ends: 108923 [2020-07-21 02:25:33,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 02:25:33,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108923 states. [2020-07-21 02:25:39,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108923 to 108231. [2020-07-21 02:25:39,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108231 states. [2020-07-21 02:25:40,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108231 states to 108231 states and 158511 transitions. [2020-07-21 02:25:40,002 INFO L78 Accepts]: Start accepts. Automaton has 108231 states and 158511 transitions. Word has length 339 [2020-07-21 02:25:40,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:25:40,002 INFO L479 AbstractCegarLoop]: Abstraction has 108231 states and 158511 transitions. [2020-07-21 02:25:40,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 02:25:40,002 INFO L276 IsEmpty]: Start isEmpty. Operand 108231 states and 158511 transitions. [2020-07-21 02:25:40,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-07-21 02:25:40,059 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:25:40,059 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:25:40,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:25:40,260 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:25:40,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:25:40,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1984758997, now seen corresponding path program 1 times [2020-07-21 02:25:40,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:25:40,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100900129] [2020-07-21 02:25:40,263 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:25:40,518 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 02:25:40,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:25:40,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 1318 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 02:25:40,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:25:40,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:25:40,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:25:40,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100900129] [2020-07-21 02:25:40,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:25:40,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 02:25:40,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957586819] [2020-07-21 02:25:40,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 02:25:40,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:25:40,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 02:25:40,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 02:25:40,602 INFO L87 Difference]: Start difference. First operand 108231 states and 158511 transitions. Second operand 4 states. [2020-07-21 02:25:50,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:25:50,159 INFO L93 Difference]: Finished difference Result 232107 states and 338799 transitions. [2020-07-21 02:25:50,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 02:25:50,161 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 340 [2020-07-21 02:25:50,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:25:50,300 INFO L225 Difference]: With dead ends: 232107 [2020-07-21 02:25:50,300 INFO L226 Difference]: Without dead ends: 117880 [2020-07-21 02:25:50,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 02:25:50,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117880 states. [2020-07-21 02:25:57,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117880 to 117634. [2020-07-21 02:25:57,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117634 states. [2020-07-21 02:25:57,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117634 states to 117634 states and 170846 transitions. [2020-07-21 02:25:57,636 INFO L78 Accepts]: Start accepts. Automaton has 117634 states and 170846 transitions. Word has length 340 [2020-07-21 02:25:57,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:25:57,637 INFO L479 AbstractCegarLoop]: Abstraction has 117634 states and 170846 transitions. [2020-07-21 02:25:57,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 02:25:57,637 INFO L276 IsEmpty]: Start isEmpty. Operand 117634 states and 170846 transitions. [2020-07-21 02:25:57,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-07-21 02:25:57,708 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:25:57,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:25:57,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:25:57,909 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:25:57,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:25:57,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1221603206, now seen corresponding path program 1 times [2020-07-21 02:25:57,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:25:57,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604487820] [2020-07-21 02:25:57,911 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:25:58,219 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 02:25:58,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:25:58,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 1610 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 02:25:58,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:25:58,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:25:58,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:25:58,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604487820] [2020-07-21 02:25:58,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:25:58,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:25:58,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889832504] [2020-07-21 02:25:58,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:25:58,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:25:58,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:25:58,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:25:58,325 INFO L87 Difference]: Start difference. First operand 117634 states and 170846 transitions. Second operand 3 states. [2020-07-21 02:26:13,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:26:13,773 INFO L93 Difference]: Finished difference Result 320447 states and 462661 transitions. [2020-07-21 02:26:13,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:26:13,774 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 341 [2020-07-21 02:26:13,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:26:14,095 INFO L225 Difference]: With dead ends: 320447 [2020-07-21 02:26:14,095 INFO L226 Difference]: Without dead ends: 220871 [2020-07-21 02:26:14,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:26:14,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220871 states. [2020-07-21 02:26:33,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220871 to 220215. [2020-07-21 02:26:33,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220215 states. [2020-07-21 02:26:33,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220215 states to 220215 states and 317611 transitions. [2020-07-21 02:26:33,773 INFO L78 Accepts]: Start accepts. Automaton has 220215 states and 317611 transitions. Word has length 341 [2020-07-21 02:26:33,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:26:33,773 INFO L479 AbstractCegarLoop]: Abstraction has 220215 states and 317611 transitions. [2020-07-21 02:26:33,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:26:33,773 INFO L276 IsEmpty]: Start isEmpty. Operand 220215 states and 317611 transitions. [2020-07-21 02:26:33,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-07-21 02:26:33,904 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:26:33,904 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:26:34,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:26:34,106 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:26:34,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:26:34,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1742808744, now seen corresponding path program 1 times [2020-07-21 02:26:34,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:26:34,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585896313] [2020-07-21 02:26:34,108 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:26:34,379 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 02:26:34,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:26:34,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 1331 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 02:26:34,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:26:34,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:26:34,465 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:26:34,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585896313] [2020-07-21 02:26:34,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:26:34,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:26:34,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312700111] [2020-07-21 02:26:34,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:26:34,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:26:34,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:26:34,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:26:34,467 INFO L87 Difference]: Start difference. First operand 220215 states and 317611 transitions. Second operand 3 states. [2020-07-21 02:27:00,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:27:00,285 INFO L93 Difference]: Finished difference Result 569705 states and 820667 transitions. [2020-07-21 02:27:00,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:27:00,285 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 342 [2020-07-21 02:27:00,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:27:00,838 INFO L225 Difference]: With dead ends: 569705 [2020-07-21 02:27:00,838 INFO L226 Difference]: Without dead ends: 364313 [2020-07-21 02:27:01,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:27:01,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364313 states. [2020-07-21 02:27:23,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364313 to 220476. [2020-07-21 02:27:23,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220476 states. [2020-07-21 02:27:24,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220476 states to 220476 states and 317474 transitions. [2020-07-21 02:27:24,417 INFO L78 Accepts]: Start accepts. Automaton has 220476 states and 317474 transitions. Word has length 342 [2020-07-21 02:27:24,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:27:24,417 INFO L479 AbstractCegarLoop]: Abstraction has 220476 states and 317474 transitions. [2020-07-21 02:27:24,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:27:24,418 INFO L276 IsEmpty]: Start isEmpty. Operand 220476 states and 317474 transitions. [2020-07-21 02:27:24,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-07-21 02:27:24,572 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:27:24,572 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:27:24,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:27:24,773 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:27:24,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:27:24,774 INFO L82 PathProgramCache]: Analyzing trace with hash -2089231950, now seen corresponding path program 1 times [2020-07-21 02:27:24,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:27:24,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011450094] [2020-07-21 02:27:24,777 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:27:25,049 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 02:27:25,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:27:25,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 1321 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 02:27:25,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:27:25,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:27:25,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:27:25,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011450094] [2020-07-21 02:27:25,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:27:25,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:27:25,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719364092] [2020-07-21 02:27:25,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:27:25,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:27:25,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:27:25,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:27:25,116 INFO L87 Difference]: Start difference. First operand 220476 states and 317474 transitions. Second operand 3 states. [2020-07-21 02:27:47,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:27:47,238 INFO L93 Difference]: Finished difference Result 383772 states and 552579 transitions. [2020-07-21 02:27:47,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:27:47,238 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 343 [2020-07-21 02:27:47,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:27:47,586 INFO L225 Difference]: With dead ends: 383772 [2020-07-21 02:27:47,586 INFO L226 Difference]: Without dead ends: 299708 [2020-07-21 02:27:47,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:27:47,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299708 states. [2020-07-21 02:28:10,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299708 to 220476. [2020-07-21 02:28:10,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220476 states. [2020-07-21 02:28:11,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220476 states to 220476 states and 317438 transitions. [2020-07-21 02:28:11,021 INFO L78 Accepts]: Start accepts. Automaton has 220476 states and 317438 transitions. Word has length 343 [2020-07-21 02:28:11,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:28:11,021 INFO L479 AbstractCegarLoop]: Abstraction has 220476 states and 317438 transitions. [2020-07-21 02:28:11,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:28:11,021 INFO L276 IsEmpty]: Start isEmpty. Operand 220476 states and 317438 transitions. [2020-07-21 02:28:11,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-07-21 02:28:11,150 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:28:11,150 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:28:11,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:28:11,359 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:28:11,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:28:11,360 INFO L82 PathProgramCache]: Analyzing trace with hash -49337893, now seen corresponding path program 1 times [2020-07-21 02:28:11,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:28:11,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299081755] [2020-07-21 02:28:11,361 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:28:11,636 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 02:28:11,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:28:11,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 1331 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 02:28:11,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:28:11,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:28:11,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:28:11,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299081755] [2020-07-21 02:28:11,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:28:11,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 02:28:11,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042228216] [2020-07-21 02:28:11,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 02:28:11,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:28:11,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 02:28:11,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 02:28:11,707 INFO L87 Difference]: Start difference. First operand 220476 states and 317438 transitions. Second operand 4 states. [2020-07-21 02:28:35,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:28:35,283 INFO L93 Difference]: Finished difference Result 503958 states and 724537 transitions. [2020-07-21 02:28:35,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 02:28:35,283 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 343 [2020-07-21 02:28:35,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:28:35,719 INFO L225 Difference]: With dead ends: 503958 [2020-07-21 02:28:35,719 INFO L226 Difference]: Without dead ends: 334373 [2020-07-21 02:28:35,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 02:28:36,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334373 states. [2020-07-21 02:28:58,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334373 to 221824. [2020-07-21 02:28:58,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221824 states. [2020-07-21 02:28:59,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221824 states to 221824 states and 319692 transitions. [2020-07-21 02:28:59,213 INFO L78 Accepts]: Start accepts. Automaton has 221824 states and 319692 transitions. Word has length 343 [2020-07-21 02:28:59,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:28:59,213 INFO L479 AbstractCegarLoop]: Abstraction has 221824 states and 319692 transitions. [2020-07-21 02:28:59,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 02:28:59,213 INFO L276 IsEmpty]: Start isEmpty. Operand 221824 states and 319692 transitions. [2020-07-21 02:28:59,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-07-21 02:28:59,339 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:28:59,339 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:28:59,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:28:59,540 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:28:59,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:28:59,541 INFO L82 PathProgramCache]: Analyzing trace with hash 271766215, now seen corresponding path program 1 times [2020-07-21 02:28:59,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:28:59,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770822181] [2020-07-21 02:28:59,542 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:28:59,853 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 02:28:59,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:28:59,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 1608 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 02:28:59,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:28:59,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:28:59,942 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:28:59,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770822181] [2020-07-21 02:28:59,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:28:59,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:28:59,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095244401] [2020-07-21 02:28:59,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:28:59,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:28:59,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:28:59,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:28:59,943 INFO L87 Difference]: Start difference. First operand 221824 states and 319692 transitions. Second operand 3 states. [2020-07-21 02:29:36,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:29:36,435 INFO L93 Difference]: Finished difference Result 611011 states and 878999 transitions. [2020-07-21 02:29:36,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:29:36,435 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 344 [2020-07-21 02:29:36,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:29:37,073 INFO L225 Difference]: With dead ends: 611011 [2020-07-21 02:29:37,073 INFO L226 Difference]: Without dead ends: 419759 [2020-07-21 02:29:37,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:29:37,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419759 states. [2020-07-21 02:30:16,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419759 to 419701. [2020-07-21 02:30:16,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419701 states. [2020-07-21 02:30:16,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419701 states to 419701 states and 600225 transitions. [2020-07-21 02:30:16,752 INFO L78 Accepts]: Start accepts. Automaton has 419701 states and 600225 transitions. Word has length 344 [2020-07-21 02:30:16,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:30:16,752 INFO L479 AbstractCegarLoop]: Abstraction has 419701 states and 600225 transitions. [2020-07-21 02:30:16,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:30:16,752 INFO L276 IsEmpty]: Start isEmpty. Operand 419701 states and 600225 transitions. [2020-07-21 02:30:17,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-07-21 02:30:17,010 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:30:17,011 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:30:17,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:30:17,224 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:30:17,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:30:17,225 INFO L82 PathProgramCache]: Analyzing trace with hash -617353460, now seen corresponding path program 1 times [2020-07-21 02:30:17,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:30:17,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107915334] [2020-07-21 02:30:17,226 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:30:17,559 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 02:30:17,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:30:17,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 1617 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 02:30:17,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:30:17,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:30:17,667 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:30:17,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107915334] [2020-07-21 02:30:17,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:30:17,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 02:30:17,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947798687] [2020-07-21 02:30:17,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 02:30:17,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:30:17,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 02:30:17,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 02:30:17,668 INFO L87 Difference]: Start difference. First operand 419701 states and 600225 transitions. Second operand 4 states. [2020-07-21 02:31:24,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:31:24,644 INFO L93 Difference]: Finished difference Result 1220561 states and 1741343 transitions. [2020-07-21 02:31:24,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 02:31:24,645 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 345 [2020-07-21 02:31:24,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:31:25,884 INFO L225 Difference]: With dead ends: 1220561 [2020-07-21 02:31:25,884 INFO L226 Difference]: Without dead ends: 803049 [2020-07-21 02:31:26,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 02:31:26,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803049 states. [2020-07-21 02:32:48,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803049 to 802363. [2020-07-21 02:32:48,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 802363 states. [2020-07-21 02:32:50,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802363 states to 802363 states and 1136664 transitions. [2020-07-21 02:32:50,097 INFO L78 Accepts]: Start accepts. Automaton has 802363 states and 1136664 transitions. Word has length 345 [2020-07-21 02:32:50,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:32:50,097 INFO L479 AbstractCegarLoop]: Abstraction has 802363 states and 1136664 transitions. [2020-07-21 02:32:50,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 02:32:50,097 INFO L276 IsEmpty]: Start isEmpty. Operand 802363 states and 1136664 transitions. [2020-07-21 02:32:50,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-07-21 02:32:50,611 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:32:50,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:32:50,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:32:50,812 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:32:50,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:32:50,813 INFO L82 PathProgramCache]: Analyzing trace with hash -286694571, now seen corresponding path program 1 times [2020-07-21 02:32:50,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:32:50,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273943538] [2020-07-21 02:32:50,815 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:32:51,091 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 02:32:51,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:32:51,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 1338 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 02:32:51,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:32:51,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:32:51,183 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:32:51,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273943538] [2020-07-21 02:32:51,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:32:51,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 02:32:51,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375709141] [2020-07-21 02:32:51,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 02:32:51,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:32:51,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 02:32:51,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 02:32:51,185 INFO L87 Difference]: Start difference. First operand 802363 states and 1136664 transitions. Second operand 4 states. [2020-07-21 02:35:17,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:35:17,547 INFO L93 Difference]: Finished difference Result 2342064 states and 3314092 transitions. [2020-07-21 02:35:17,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 02:35:17,547 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 345 [2020-07-21 02:35:17,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:35:21,137 INFO L225 Difference]: With dead ends: 2342064 [2020-07-21 02:35:21,137 INFO L226 Difference]: Without dead ends: 1588546 [2020-07-21 02:35:21,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 02:35:23,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1588546 states.