/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 NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 14:46:20,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 14:46:20,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 14:46:20,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 14:46:20,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 14:46:20,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 14:46:20,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 14:46:20,733 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 14:46:20,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 14:46:20,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 14:46:20,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 14:46:20,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 14:46:20,742 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 14:46:20,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 14:46:20,747 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 14:46:20,748 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 14:46:20,750 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 14:46:20,750 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 14:46:20,752 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 14:46:20,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 14:46:20,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 14:46:20,766 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 14:46:20,767 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 14:46:20,768 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 14:46:20,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 14:46:20,774 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 14:46:20,775 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 14:46:20,776 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 14:46:20,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 14:46:20,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 14:46:20,778 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 14:46:20,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 14:46:20,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 14:46:20,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 14:46:20,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 14:46:20,781 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 14:46:20,781 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 14:46:20,813 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 14:46:20,814 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 14:46:20,815 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 14:46:20,815 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 14:46:20,819 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 14:46:20,819 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 14:46:20,819 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 14:46:20,820 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 14:46:20,820 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 14:46:20,820 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 14:46:20,820 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 14:46:20,820 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 14:46:20,821 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 14:46:20,821 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 14:46:20,821 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 14:46:20,821 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 14:46:20,821 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 14:46:20,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 14:46:20,822 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 14:46:20,822 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 14:46:20,822 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 14:46:20,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 14:46:20,822 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 14:46:20,823 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 14:46:20,823 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 14:46:20,823 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 14:46:20,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:46:20,825 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 14:46:20,825 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 14:46:20,825 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 -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 14:46:21,118 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 14:46:21,131 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 14:46:21,135 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 14:46:21,136 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 14:46:21,137 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 14:46:21,137 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-21 14:46:21,196 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2863bd0b/3aa02c4c79864a3a82bc6c3778c82e5d/FLAGc838ce522 [2020-07-21 14:46:21,839 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 14:46:21,840 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-21 14:46:21,871 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2863bd0b/3aa02c4c79864a3a82bc6c3778c82e5d/FLAGc838ce522 [2020-07-21 14:46:22,033 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2863bd0b/3aa02c4c79864a3a82bc6c3778c82e5d [2020-07-21 14:46:22,044 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 14:46:22,047 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 14:46:22,050 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 14:46:22,050 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 14:46:22,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 14:46:22,054 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:46:22" (1/1) ... [2020-07-21 14:46:22,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@152045d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:46:22, skipping insertion in model container [2020-07-21 14:46:22,057 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:46:22" (1/1) ... [2020-07-21 14:46:22,065 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 14:46:22,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 14:46:23,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 14:46:23,593 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 14:46:24,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 14:46:24,610 INFO L208 MainTranslator]: Completed translation [2020-07-21 14:46:24,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:46:24 WrapperNode [2020-07-21 14:46:24,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 14:46:24,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 14:46:24,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 14:46:24,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 14:46:24,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:46:24" (1/1) ... [2020-07-21 14:46:24,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:46:24" (1/1) ... [2020-07-21 14:46:24,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:46:24" (1/1) ... [2020-07-21 14:46:24,691 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:46:24" (1/1) ... [2020-07-21 14:46:24,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:46:24" (1/1) ... [2020-07-21 14:46:24,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:46:24" (1/1) ... [2020-07-21 14:46:24,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:46:24" (1/1) ... [2020-07-21 14:46:24,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 14:46:24,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 14:46:24,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 14:46:24,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 14:46:24,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:46:24" (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 14:46:24,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 14:46:24,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 14:46:24,915 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 14:46:24,915 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 14:46:24,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 14:46:24,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-21 14:46:24,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-07-21 14:46:24,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-21 14:46:24,916 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-07-21 14:46:24,916 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 14:46:24,916 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 14:46:24,917 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-07-21 14:46:24,917 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-07-21 14:46:24,917 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-07-21 14:46:24,917 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-07-21 14:46:24,917 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-07-21 14:46:24,918 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-07-21 14:46:24,918 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-07-21 14:46:24,918 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-21 14:46:24,918 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 14:46:24,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 14:46:24,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 14:46:27,941 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 14:46:27,942 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 14:46:27,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:46:27 BoogieIcfgContainer [2020-07-21 14:46:27,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 14:46:27,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 14:46:27,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 14:46:27,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 14:46:27,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:46:22" (1/3) ... [2020-07-21 14:46:27,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35f1ee86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:46:27, skipping insertion in model container [2020-07-21 14:46:27,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:46:24" (2/3) ... [2020-07-21 14:46:27,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35f1ee86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:46:27, skipping insertion in model container [2020-07-21 14:46:27,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:46:27" (3/3) ... [2020-07-21 14:46:27,970 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-21 14:46:27,981 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 14:46:27,999 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-07-21 14:46:28,014 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-07-21 14:46:28,048 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 14:46:28,048 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 14:46:28,048 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 14:46:28,048 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 14:46:28,048 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 14:46:28,048 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 14:46:28,049 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 14:46:28,049 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 14:46:28,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states. [2020-07-21 14:46:28,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-07-21 14:46:28,136 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:46:28,139 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:46:28,140 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 14:46:28,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:46:28,147 INFO L82 PathProgramCache]: Analyzing trace with hash -179235525, now seen corresponding path program 1 times [2020-07-21 14:46:28,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:46:28,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910593153] [2020-07-21 14:46:28,156 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 14:46:28,639 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:46:28,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:46:28,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 1140 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 14:46:28,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:46:29,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:46:29,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:46:29,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910593153] [2020-07-21 14:46:29,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:46:29,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 14:46:29,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575996084] [2020-07-21 14:46:29,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 14:46:29,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:46:29,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 14:46:29,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 14:46:29,143 INFO L87 Difference]: Start difference. First operand 1016 states. Second operand 4 states. [2020-07-21 14:46:29,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:46:29,489 INFO L93 Difference]: Finished difference Result 2971 states and 5318 transitions. [2020-07-21 14:46:29,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 14:46:29,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 324 [2020-07-21 14:46:29,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:46:29,521 INFO L225 Difference]: With dead ends: 2971 [2020-07-21 14:46:29,521 INFO L226 Difference]: Without dead ends: 1974 [2020-07-21 14:46:29,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 14:46:29,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2020-07-21 14:46:29,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1879. [2020-07-21 14:46:29,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1879 states. [2020-07-21 14:46:29,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1879 states to 1879 states and 2862 transitions. [2020-07-21 14:46:29,671 INFO L78 Accepts]: Start accepts. Automaton has 1879 states and 2862 transitions. Word has length 324 [2020-07-21 14:46:29,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:46:29,672 INFO L479 AbstractCegarLoop]: Abstraction has 1879 states and 2862 transitions. [2020-07-21 14:46:29,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 14:46:29,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1879 states and 2862 transitions. [2020-07-21 14:46:29,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-07-21 14:46:29,681 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:46:29,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:46:29,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:46:29,897 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 14:46:29,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:46:29,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1770519805, now seen corresponding path program 1 times [2020-07-21 14:46:29,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:46:29,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391867862] [2020-07-21 14:46:29,898 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 14:46:30,181 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:46:30,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:46:30,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 14:46:30,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:46:30,375 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 14:46:30,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:46:30,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391867862] [2020-07-21 14:46:30,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:46:30,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 14:46:30,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892227126] [2020-07-21 14:46:30,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 14:46:30,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:46:30,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 14:46:30,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:46:30,380 INFO L87 Difference]: Start difference. First operand 1879 states and 2862 transitions. Second operand 3 states. [2020-07-21 14:46:30,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:46:30,618 INFO L93 Difference]: Finished difference Result 5403 states and 8181 transitions. [2020-07-21 14:46:30,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 14:46:30,619 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 326 [2020-07-21 14:46:30,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:46:30,641 INFO L225 Difference]: With dead ends: 5403 [2020-07-21 14:46:30,642 INFO L226 Difference]: Without dead ends: 3651 [2020-07-21 14:46:30,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:46:30,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3651 states. [2020-07-21 14:46:30,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3651 to 3553. [2020-07-21 14:46:30,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3553 states. [2020-07-21 14:46:30,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3553 states to 3553 states and 5396 transitions. [2020-07-21 14:46:30,790 INFO L78 Accepts]: Start accepts. Automaton has 3553 states and 5396 transitions. Word has length 326 [2020-07-21 14:46:30,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:46:30,796 INFO L479 AbstractCegarLoop]: Abstraction has 3553 states and 5396 transitions. [2020-07-21 14:46:30,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 14:46:30,796 INFO L276 IsEmpty]: Start isEmpty. Operand 3553 states and 5396 transitions. [2020-07-21 14:46:30,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-07-21 14:46:30,808 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:46:30,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:46:31,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:46:31,025 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 14:46:31,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:46:31,026 INFO L82 PathProgramCache]: Analyzing trace with hash -157244536, now seen corresponding path program 1 times [2020-07-21 14:46:31,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:46:31,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659022666] [2020-07-21 14:46:31,026 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 14:46:31,286 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:46:31,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:46:31,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 14:46:31,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:46:31,415 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 14:46:31,415 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:46:31,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659022666] [2020-07-21 14:46:31,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:46:31,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 14:46:31,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472910093] [2020-07-21 14:46:31,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 14:46:31,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:46:31,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 14:46:31,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:46:31,418 INFO L87 Difference]: Start difference. First operand 3553 states and 5396 transitions. Second operand 3 states. [2020-07-21 14:46:31,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:46:31,610 INFO L93 Difference]: Finished difference Result 10477 states and 15871 transitions. [2020-07-21 14:46:31,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 14:46:31,611 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 326 [2020-07-21 14:46:31,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:46:31,644 INFO L225 Difference]: With dead ends: 10477 [2020-07-21 14:46:31,644 INFO L226 Difference]: Without dead ends: 7018 [2020-07-21 14:46:31,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:46:31,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7018 states. [2020-07-21 14:46:31,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7018 to 3566. [2020-07-21 14:46:31,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3566 states. [2020-07-21 14:46:31,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3566 states to 3566 states and 5412 transitions. [2020-07-21 14:46:31,826 INFO L78 Accepts]: Start accepts. Automaton has 3566 states and 5412 transitions. Word has length 326 [2020-07-21 14:46:31,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:46:31,827 INFO L479 AbstractCegarLoop]: Abstraction has 3566 states and 5412 transitions. [2020-07-21 14:46:31,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 14:46:31,827 INFO L276 IsEmpty]: Start isEmpty. Operand 3566 states and 5412 transitions. [2020-07-21 14:46:31,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-21 14:46:31,837 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:46:31,837 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 14:46:32,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:46:32,051 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 14:46:32,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:46:32,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1412346969, now seen corresponding path program 1 times [2020-07-21 14:46:32,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:46:32,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988104488] [2020-07-21 14:46:32,053 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 14:46:32,326 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:46:32,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:46:32,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 14:46:32,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:46:32,470 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 14:46:32,471 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:46:32,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988104488] [2020-07-21 14:46:32,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:46:32,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 14:46:32,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042546846] [2020-07-21 14:46:32,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 14:46:32,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:46:32,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 14:46:32,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:46:32,475 INFO L87 Difference]: Start difference. First operand 3566 states and 5412 transitions. Second operand 3 states. [2020-07-21 14:46:32,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:46:32,663 INFO L93 Difference]: Finished difference Result 10502 states and 15904 transitions. [2020-07-21 14:46:32,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 14:46:32,664 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 327 [2020-07-21 14:46:32,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:46:32,696 INFO L225 Difference]: With dead ends: 10502 [2020-07-21 14:46:32,697 INFO L226 Difference]: Without dead ends: 7001 [2020-07-21 14:46:32,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:46:32,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7001 states. [2020-07-21 14:46:32,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7001 to 3582. [2020-07-21 14:46:32,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3582 states. [2020-07-21 14:46:32,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3582 states to 3582 states and 5432 transitions. [2020-07-21 14:46:32,890 INFO L78 Accepts]: Start accepts. Automaton has 3582 states and 5432 transitions. Word has length 327 [2020-07-21 14:46:32,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:46:32,891 INFO L479 AbstractCegarLoop]: Abstraction has 3582 states and 5432 transitions. [2020-07-21 14:46:32,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 14:46:32,891 INFO L276 IsEmpty]: Start isEmpty. Operand 3582 states and 5432 transitions. [2020-07-21 14:46:32,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-07-21 14:46:32,903 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:46:32,903 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:46:33,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:46:33,119 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 14:46:33,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:46:33,119 INFO L82 PathProgramCache]: Analyzing trace with hash 161651486, now seen corresponding path program 1 times [2020-07-21 14:46:33,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:46:33,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360671330] [2020-07-21 14:46:33,121 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 14:46:33,373 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:46:33,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:46:33,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 1143 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 14:46:33,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:46:33,501 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 14:46:33,501 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:46:33,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360671330] [2020-07-21 14:46:33,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:46:33,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 14:46:33,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669167885] [2020-07-21 14:46:33,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 14:46:33,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:46:33,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 14:46:33,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 14:46:33,504 INFO L87 Difference]: Start difference. First operand 3582 states and 5432 transitions. Second operand 4 states. [2020-07-21 14:46:33,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:46:33,756 INFO L93 Difference]: Finished difference Result 7637 states and 11572 transitions. [2020-07-21 14:46:33,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 14:46:33,757 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 328 [2020-07-21 14:46:33,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:46:33,776 INFO L225 Difference]: With dead ends: 7637 [2020-07-21 14:46:33,776 INFO L226 Difference]: Without dead ends: 4068 [2020-07-21 14:46:33,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 14:46:33,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4068 states. [2020-07-21 14:46:33,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4068 to 3637. [2020-07-21 14:46:33,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3637 states. [2020-07-21 14:46:33,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3637 states to 3637 states and 5513 transitions. [2020-07-21 14:46:33,933 INFO L78 Accepts]: Start accepts. Automaton has 3637 states and 5513 transitions. Word has length 328 [2020-07-21 14:46:33,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:46:33,933 INFO L479 AbstractCegarLoop]: Abstraction has 3637 states and 5513 transitions. [2020-07-21 14:46:33,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 14:46:33,934 INFO L276 IsEmpty]: Start isEmpty. Operand 3637 states and 5513 transitions. [2020-07-21 14:46:33,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-07-21 14:46:33,944 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:46:33,945 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 14:46:34,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:46:34,158 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 14:46:34,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:46:34,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1238325364, now seen corresponding path program 1 times [2020-07-21 14:46:34,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:46:34,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209292839] [2020-07-21 14:46:34,160 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 14:46:34,410 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:46:34,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:46:34,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 1146 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 14:46:34,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:46:34,517 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 14:46:34,524 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:46:34,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209292839] [2020-07-21 14:46:34,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:46:34,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 14:46:34,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687608837] [2020-07-21 14:46:34,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 14:46:34,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:46:34,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 14:46:34,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:46:34,529 INFO L87 Difference]: Start difference. First operand 3637 states and 5513 transitions. Second operand 3 states. [2020-07-21 14:46:34,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:46:34,766 INFO L93 Difference]: Finished difference Result 10845 states and 16434 transitions. [2020-07-21 14:46:34,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 14:46:34,767 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 330 [2020-07-21 14:46:34,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:46:34,809 INFO L225 Difference]: With dead ends: 10845 [2020-07-21 14:46:34,810 INFO L226 Difference]: Without dead ends: 7244 [2020-07-21 14:46:34,824 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 14:46:34,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7244 states. [2020-07-21 14:46:34,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7244 to 3650. [2020-07-21 14:46:34,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3650 states. [2020-07-21 14:46:34,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 5529 transitions. [2020-07-21 14:46:34,988 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 5529 transitions. Word has length 330 [2020-07-21 14:46:34,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:46:34,990 INFO L479 AbstractCegarLoop]: Abstraction has 3650 states and 5529 transitions. [2020-07-21 14:46:34,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 14:46:34,990 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 5529 transitions. [2020-07-21 14:46:35,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-07-21 14:46:35,000 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:46:35,000 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 14:46:35,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:46:35,214 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 14:46:35,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:46:35,214 INFO L82 PathProgramCache]: Analyzing trace with hash 2133229223, now seen corresponding path program 1 times [2020-07-21 14:46:35,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:46:35,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110526603] [2020-07-21 14:46:35,215 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 14:46:35,473 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:46:35,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:46:35,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 1146 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 14:46:35,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:46:35,550 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 14:46:35,550 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:46:35,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110526603] [2020-07-21 14:46:35,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:46:35,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 14:46:35,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359897723] [2020-07-21 14:46:35,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 14:46:35,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:46:35,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 14:46:35,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:46:35,553 INFO L87 Difference]: Start difference. First operand 3650 states and 5529 transitions. Second operand 3 states. [2020-07-21 14:46:35,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:46:35,810 INFO L93 Difference]: Finished difference Result 10868 states and 16466 transitions. [2020-07-21 14:46:35,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 14:46:35,811 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 331 [2020-07-21 14:46:35,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:46:35,826 INFO L225 Difference]: With dead ends: 10868 [2020-07-21 14:46:35,827 INFO L226 Difference]: Without dead ends: 7256 [2020-07-21 14:46:35,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:46:35,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7256 states. [2020-07-21 14:46:36,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7256 to 3664. [2020-07-21 14:46:36,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3664 states. [2020-07-21 14:46:36,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3664 states to 3664 states and 5547 transitions. [2020-07-21 14:46:36,015 INFO L78 Accepts]: Start accepts. Automaton has 3664 states and 5547 transitions. Word has length 331 [2020-07-21 14:46:36,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:46:36,016 INFO L479 AbstractCegarLoop]: Abstraction has 3664 states and 5547 transitions. [2020-07-21 14:46:36,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 14:46:36,016 INFO L276 IsEmpty]: Start isEmpty. Operand 3664 states and 5547 transitions. [2020-07-21 14:46:36,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-07-21 14:46:36,027 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:46:36,028 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] [2020-07-21 14:46:36,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:46:36,242 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 14:46:36,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:46:36,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1397314616, now seen corresponding path program 1 times [2020-07-21 14:46:36,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:46:36,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137510814] [2020-07-21 14:46:36,243 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 14:46:36,491 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:46:36,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:46:36,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 14:46:36,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:46:36,650 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 14:46:36,650 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:46:36,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137510814] [2020-07-21 14:46:36,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:46:36,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-21 14:46:36,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828986812] [2020-07-21 14:46:36,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-21 14:46:36,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:46:36,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-21 14:46:36,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-07-21 14:46:36,653 INFO L87 Difference]: Start difference. First operand 3664 states and 5547 transitions. Second operand 9 states. [2020-07-21 14:46:43,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:46:43,382 INFO L93 Difference]: Finished difference Result 25962 states and 39969 transitions. [2020-07-21 14:46:43,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-07-21 14:46:43,383 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 332 [2020-07-21 14:46:43,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:46:43,453 INFO L225 Difference]: With dead ends: 25962 [2020-07-21 14:46:43,453 INFO L226 Difference]: Without dead ends: 24979 [2020-07-21 14:46:43,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=370, Invalid=1112, Unknown=0, NotChecked=0, Total=1482 [2020-07-21 14:46:43,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24979 states. [2020-07-21 14:46:44,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24979 to 8792. [2020-07-21 14:46:44,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8792 states. [2020-07-21 14:46:44,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8792 states to 8792 states and 13443 transitions. [2020-07-21 14:46:44,084 INFO L78 Accepts]: Start accepts. Automaton has 8792 states and 13443 transitions. Word has length 332 [2020-07-21 14:46:44,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:46:44,085 INFO L479 AbstractCegarLoop]: Abstraction has 8792 states and 13443 transitions. [2020-07-21 14:46:44,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-21 14:46:44,085 INFO L276 IsEmpty]: Start isEmpty. Operand 8792 states and 13443 transitions. [2020-07-21 14:46:44,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-07-21 14:46:44,105 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:46:44,105 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:46:44,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:46:44,320 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 14:46:44,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:46:44,320 INFO L82 PathProgramCache]: Analyzing trace with hash 308483416, now seen corresponding path program 1 times [2020-07-21 14:46:44,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:46:44,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828460002] [2020-07-21 14:46:44,321 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 14:46:44,570 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:46:44,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:46:44,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 1157 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 14:46:44,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:46:44,643 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 14:46:44,643 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:46:44,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828460002] [2020-07-21 14:46:44,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:46:44,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 14:46:44,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119525731] [2020-07-21 14:46:44,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 14:46:44,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:46:44,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 14:46:44,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:46:44,646 INFO L87 Difference]: Start difference. First operand 8792 states and 13443 transitions. Second operand 3 states. [2020-07-21 14:46:45,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:46:45,217 INFO L93 Difference]: Finished difference Result 20009 states and 30768 transitions. [2020-07-21 14:46:45,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 14:46:45,217 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 332 [2020-07-21 14:46:45,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:46:45,241 INFO L225 Difference]: With dead ends: 20009 [2020-07-21 14:46:45,241 INFO L226 Difference]: Without dead ends: 12049 [2020-07-21 14:46:45,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:46:45,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12049 states. [2020-07-21 14:46:45,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12049 to 10277. [2020-07-21 14:46:45,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10277 states. [2020-07-21 14:46:45,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10277 states to 10277 states and 15886 transitions. [2020-07-21 14:46:45,770 INFO L78 Accepts]: Start accepts. Automaton has 10277 states and 15886 transitions. Word has length 332 [2020-07-21 14:46:45,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:46:45,770 INFO L479 AbstractCegarLoop]: Abstraction has 10277 states and 15886 transitions. [2020-07-21 14:46:45,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 14:46:45,770 INFO L276 IsEmpty]: Start isEmpty. Operand 10277 states and 15886 transitions. [2020-07-21 14:46:45,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-07-21 14:46:45,782 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:46:45,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:46:45,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:46:45,997 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 14:46:45,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:46:45,998 INFO L82 PathProgramCache]: Analyzing trace with hash -46203161, now seen corresponding path program 1 times [2020-07-21 14:46:45,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:46:45,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330063164] [2020-07-21 14:46:46,000 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 14:46:46,253 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:46:46,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:46:46,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 1154 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 14:46:46,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:46:46,345 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 14:46:46,345 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:46:46,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330063164] [2020-07-21 14:46:46,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:46:46,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 14:46:46,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091788957] [2020-07-21 14:46:46,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 14:46:46,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:46:46,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 14:46:46,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 14:46:46,347 INFO L87 Difference]: Start difference. First operand 10277 states and 15886 transitions. Second operand 4 states. [2020-07-21 14:46:47,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:46:47,562 INFO L93 Difference]: Finished difference Result 30237 states and 46718 transitions. [2020-07-21 14:46:47,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 14:46:47,562 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 332 [2020-07-21 14:46:47,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:46:47,601 INFO L225 Difference]: With dead ends: 30237 [2020-07-21 14:46:47,601 INFO L226 Difference]: Without dead ends: 20176 [2020-07-21 14:46:47,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 14:46:47,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20176 states. [2020-07-21 14:46:48,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20176 to 20050. [2020-07-21 14:46:48,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20050 states. [2020-07-21 14:46:48,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20050 states to 20050 states and 30867 transitions. [2020-07-21 14:46:48,600 INFO L78 Accepts]: Start accepts. Automaton has 20050 states and 30867 transitions. Word has length 332 [2020-07-21 14:46:48,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:46:48,601 INFO L479 AbstractCegarLoop]: Abstraction has 20050 states and 30867 transitions. [2020-07-21 14:46:48,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 14:46:48,601 INFO L276 IsEmpty]: Start isEmpty. Operand 20050 states and 30867 transitions. [2020-07-21 14:46:48,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-07-21 14:46:48,616 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:46:48,616 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 14:46:48,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:46:48,826 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 14:46:48,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:46:48,827 INFO L82 PathProgramCache]: Analyzing trace with hash -2096561345, now seen corresponding path program 1 times [2020-07-21 14:46:48,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:46:48,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529442431] [2020-07-21 14:46:48,829 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 14:46:49,074 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:46:49,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:46:49,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 1147 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 14:46:49,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:46:49,209 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 14:46:49,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:46:49,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529442431] [2020-07-21 14:46:49,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:46:49,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 14:46:49,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058049410] [2020-07-21 14:46:49,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 14:46:49,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:46:49,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 14:46:49,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 14:46:49,212 INFO L87 Difference]: Start difference. First operand 20050 states and 30867 transitions. Second operand 4 states. [2020-07-21 14:46:51,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:46:51,434 INFO L93 Difference]: Finished difference Result 58695 states and 90212 transitions. [2020-07-21 14:46:51,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 14:46:51,435 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 334 [2020-07-21 14:46:51,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:46:51,497 INFO L225 Difference]: With dead ends: 58695 [2020-07-21 14:46:51,497 INFO L226 Difference]: Without dead ends: 38694 [2020-07-21 14:46:51,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 331 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 14:46:51,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38694 states. [2020-07-21 14:46:53,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38694 to 38620. [2020-07-21 14:46:53,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38620 states. [2020-07-21 14:46:53,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38620 states to 38620 states and 59013 transitions. [2020-07-21 14:46:53,229 INFO L78 Accepts]: Start accepts. Automaton has 38620 states and 59013 transitions. Word has length 334 [2020-07-21 14:46:53,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:46:53,230 INFO L479 AbstractCegarLoop]: Abstraction has 38620 states and 59013 transitions. [2020-07-21 14:46:53,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 14:46:53,230 INFO L276 IsEmpty]: Start isEmpty. Operand 38620 states and 59013 transitions. [2020-07-21 14:46:53,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-07-21 14:46:53,256 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:46:53,256 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 14:46:53,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:46:53,458 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 14:46:53,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:46:53,459 INFO L82 PathProgramCache]: Analyzing trace with hash 744202144, now seen corresponding path program 1 times [2020-07-21 14:46:53,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:46:53,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180194866] [2020-07-21 14:46:53,460 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 14:46:53,703 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:46:53,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:46:53,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 1152 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 14:46:53,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:46:53,786 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 14:46:53,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:46:53,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180194866] [2020-07-21 14:46:53,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:46:53,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 14:46:53,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917442946] [2020-07-21 14:46:53,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 14:46:53,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:46:53,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 14:46:53,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 14:46:53,788 INFO L87 Difference]: Start difference. First operand 38620 states and 59013 transitions. Second operand 4 states. [2020-07-21 14:46:57,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:46:57,503 INFO L93 Difference]: Finished difference Result 111227 states and 169843 transitions. [2020-07-21 14:46:57,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 14:46:57,504 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 334 [2020-07-21 14:46:57,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:46:57,589 INFO L225 Difference]: With dead ends: 111227 [2020-07-21 14:46:57,589 INFO L226 Difference]: Without dead ends: 73774 [2020-07-21 14:46:57,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 331 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 14:46:57,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73774 states. [2020-07-21 14:46:59,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73774 to 39673. [2020-07-21 14:46:59,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39673 states. [2020-07-21 14:46:59,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39673 states to 39673 states and 60718 transitions. [2020-07-21 14:46:59,563 INFO L78 Accepts]: Start accepts. Automaton has 39673 states and 60718 transitions. Word has length 334 [2020-07-21 14:46:59,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:46:59,563 INFO L479 AbstractCegarLoop]: Abstraction has 39673 states and 60718 transitions. [2020-07-21 14:46:59,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 14:46:59,564 INFO L276 IsEmpty]: Start isEmpty. Operand 39673 states and 60718 transitions. [2020-07-21 14:46:59,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-07-21 14:46:59,583 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:46:59,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:46:59,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:46:59,792 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 14:46:59,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:46:59,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1802513424, now seen corresponding path program 1 times [2020-07-21 14:46:59,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:46:59,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619691685] [2020-07-21 14:46:59,794 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 14:47:00,040 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:47:00,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:47:00,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 1154 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 14:47:00,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:47:00,128 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 14:47:00,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:47:00,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619691685] [2020-07-21 14:47:00,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:47:00,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 14:47:00,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494394248] [2020-07-21 14:47:00,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 14:47:00,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:47:00,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 14:47:00,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 14:47:00,130 INFO L87 Difference]: Start difference. First operand 39673 states and 60718 transitions. Second operand 4 states. [2020-07-21 14:47:04,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:47:04,203 INFO L93 Difference]: Finished difference Result 110987 states and 169629 transitions. [2020-07-21 14:47:04,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 14:47:04,207 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 336 [2020-07-21 14:47:04,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:47:04,310 INFO L225 Difference]: With dead ends: 110987 [2020-07-21 14:47:04,310 INFO L226 Difference]: Without dead ends: 73362 [2020-07-21 14:47:04,359 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 14:47:04,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73362 states. [2020-07-21 14:47:06,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73362 to 41267. [2020-07-21 14:47:06,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41267 states. [2020-07-21 14:47:06,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41267 states to 41267 states and 63284 transitions. [2020-07-21 14:47:06,504 INFO L78 Accepts]: Start accepts. Automaton has 41267 states and 63284 transitions. Word has length 336 [2020-07-21 14:47:06,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:47:06,505 INFO L479 AbstractCegarLoop]: Abstraction has 41267 states and 63284 transitions. [2020-07-21 14:47:06,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 14:47:06,505 INFO L276 IsEmpty]: Start isEmpty. Operand 41267 states and 63284 transitions. [2020-07-21 14:47:06,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-07-21 14:47:06,533 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:47:06,533 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, 1, 1, 1, 1] [2020-07-21 14:47:06,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:47:06,746 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 14:47:06,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:47:06,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1248970567, now seen corresponding path program 1 times [2020-07-21 14:47:06,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:47:06,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324223492] [2020-07-21 14:47:06,749 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 14:47:06,991 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:47:06,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:47:06,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 14:47:07,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:47:07,079 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 14:47:07,080 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:47:07,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324223492] [2020-07-21 14:47:07,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:47:07,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 14:47:07,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953293204] [2020-07-21 14:47:07,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 14:47:07,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:47:07,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 14:47:07,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:47:07,082 INFO L87 Difference]: Start difference. First operand 41267 states and 63284 transitions. Second operand 3 states. [2020-07-21 14:47:10,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:47:10,638 INFO L93 Difference]: Finished difference Result 116421 states and 177765 transitions. [2020-07-21 14:47:10,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 14:47:10,639 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 338 [2020-07-21 14:47:10,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:47:10,720 INFO L225 Difference]: With dead ends: 116421 [2020-07-21 14:47:10,720 INFO L226 Difference]: Without dead ends: 78877 [2020-07-21 14:47:10,762 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 14:47:10,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78877 states. [2020-07-21 14:47:13,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78877 to 41616. [2020-07-21 14:47:13,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41616 states. [2020-07-21 14:47:13,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41616 states to 41616 states and 63696 transitions. [2020-07-21 14:47:13,094 INFO L78 Accepts]: Start accepts. Automaton has 41616 states and 63696 transitions. Word has length 338 [2020-07-21 14:47:13,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:47:13,094 INFO L479 AbstractCegarLoop]: Abstraction has 41616 states and 63696 transitions. [2020-07-21 14:47:13,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 14:47:13,094 INFO L276 IsEmpty]: Start isEmpty. Operand 41616 states and 63696 transitions. [2020-07-21 14:47:13,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-07-21 14:47:13,124 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:47:13,124 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, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:47:13,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:47:13,335 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 14:47:13,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:47:13,336 INFO L82 PathProgramCache]: Analyzing trace with hash 559423149, now seen corresponding path program 1 times [2020-07-21 14:47:13,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:47:13,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282822092] [2020-07-21 14:47:13,338 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 14:47:13,591 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:47:13,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:47:13,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 1165 conjuncts, 24 conjunts are in the unsatisfiable core [2020-07-21 14:47:13,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:47:13,875 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 14:47:16,148 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 14:47:16,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:47:16,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282822092] [2020-07-21 14:47:16,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:47:16,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-21 14:47:16,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644747794] [2020-07-21 14:47:16,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-21 14:47:16,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:47:16,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-21 14:47:16,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-07-21 14:47:16,150 INFO L87 Difference]: Start difference. First operand 41616 states and 63696 transitions. Second operand 10 states. [2020-07-21 14:47:26,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:47:26,733 INFO L93 Difference]: Finished difference Result 138589 states and 213889 transitions. [2020-07-21 14:47:26,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-21 14:47:26,733 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 340 [2020-07-21 14:47:26,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:47:26,856 INFO L225 Difference]: With dead ends: 138589 [2020-07-21 14:47:26,856 INFO L226 Difference]: Without dead ends: 129013 [2020-07-21 14:47:26,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 315 SyntacticMatches, 16 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-07-21 14:47:26,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129013 states. [2020-07-21 14:47:31,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129013 to 61896. [2020-07-21 14:47:31,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61896 states. [2020-07-21 14:47:31,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61896 states to 61896 states and 94692 transitions. [2020-07-21 14:47:31,476 INFO L78 Accepts]: Start accepts. Automaton has 61896 states and 94692 transitions. Word has length 340 [2020-07-21 14:47:31,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:47:31,477 INFO L479 AbstractCegarLoop]: Abstraction has 61896 states and 94692 transitions. [2020-07-21 14:47:31,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-21 14:47:31,477 INFO L276 IsEmpty]: Start isEmpty. Operand 61896 states and 94692 transitions. [2020-07-21 14:47:31,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-07-21 14:47:31,507 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:47:31,508 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 14:47:31,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:47:31,714 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 14:47:31,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:47:31,715 INFO L82 PathProgramCache]: Analyzing trace with hash -575620131, now seen corresponding path program 1 times [2020-07-21 14:47:31,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:47:31,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1574435970] [2020-07-21 14:47:31,716 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 14:47:32,091 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:47:32,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:47:32,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 2240 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 14:47:32,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:47:32,188 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 14:47:32,189 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:47:32,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1574435970] [2020-07-21 14:47:32,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:47:32,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 14:47:32,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582596947] [2020-07-21 14:47:32,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 14:47:32,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:47:32,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 14:47:32,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:47:32,191 INFO L87 Difference]: Start difference. First operand 61896 states and 94692 transitions. Second operand 3 states. [2020-07-21 14:47:41,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:47:41,829 INFO L93 Difference]: Finished difference Result 176765 states and 269462 transitions. [2020-07-21 14:47:41,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 14:47:41,830 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 340 [2020-07-21 14:47:41,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:47:41,964 INFO L225 Difference]: With dead ends: 176765 [2020-07-21 14:47:41,964 INFO L226 Difference]: Without dead ends: 118807 [2020-07-21 14:47:42,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:47:42,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118807 states. [2020-07-21 14:47:50,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118807 to 118633. [2020-07-21 14:47:50,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118633 states. [2020-07-21 14:47:50,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118633 states to 118633 states and 179942 transitions. [2020-07-21 14:47:50,285 INFO L78 Accepts]: Start accepts. Automaton has 118633 states and 179942 transitions. Word has length 340 [2020-07-21 14:47:50,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:47:50,285 INFO L479 AbstractCegarLoop]: Abstraction has 118633 states and 179942 transitions. [2020-07-21 14:47:50,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 14:47:50,285 INFO L276 IsEmpty]: Start isEmpty. Operand 118633 states and 179942 transitions. [2020-07-21 14:47:50,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-07-21 14:47:50,341 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:47:50,342 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 14:47:50,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:47:50,543 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 14:47:50,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:47:50,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1304586241, now seen corresponding path program 1 times [2020-07-21 14:47:50,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:47:50,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502309134] [2020-07-21 14:47:50,545 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 14:47:50,791 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:47:50,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:47:50,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 1157 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 14:47:50,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:47:50,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:47:50,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:47:50,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502309134] [2020-07-21 14:47:50,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:47:50,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 14:47:50,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575757785] [2020-07-21 14:47:50,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 14:47:50,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:47:50,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 14:47:50,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 14:47:50,893 INFO L87 Difference]: Start difference. First operand 118633 states and 179942 transitions. Second operand 4 states. [2020-07-21 14:48:07,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:48:07,746 INFO L93 Difference]: Finished difference Result 342287 states and 518798 transitions. [2020-07-21 14:48:07,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 14:48:07,747 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 340 [2020-07-21 14:48:07,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:48:08,024 INFO L225 Difference]: With dead ends: 342287 [2020-07-21 14:48:08,024 INFO L226 Difference]: Without dead ends: 228659 [2020-07-21 14:48:08,129 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 14:48:08,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228659 states. [2020-07-21 14:48:21,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228659 to 121369. [2020-07-21 14:48:21,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121369 states. [2020-07-21 14:48:21,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121369 states to 121369 states and 184368 transitions. [2020-07-21 14:48:21,234 INFO L78 Accepts]: Start accepts. Automaton has 121369 states and 184368 transitions. Word has length 340 [2020-07-21 14:48:21,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:48:21,234 INFO L479 AbstractCegarLoop]: Abstraction has 121369 states and 184368 transitions. [2020-07-21 14:48:21,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 14:48:21,234 INFO L276 IsEmpty]: Start isEmpty. Operand 121369 states and 184368 transitions. [2020-07-21 14:48:21,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-07-21 14:48:21,291 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:48:21,291 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 14:48:21,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:48:21,492 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 14:48:21,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:48:21,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1668647690, now seen corresponding path program 1 times [2020-07-21 14:48:21,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:48:21,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864852846] [2020-07-21 14:48:21,494 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 14:48:21,748 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:48:21,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:48:21,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 1162 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 14:48:21,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:48:21,828 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 14:48:21,829 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:48:21,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864852846] [2020-07-21 14:48:21,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:48:21,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 14:48:21,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783516987] [2020-07-21 14:48:21,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 14:48:21,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:48:21,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 14:48:21,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 14:48:21,831 INFO L87 Difference]: Start difference. First operand 121369 states and 184368 transitions. Second operand 4 states. [2020-07-21 14:48:32,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:48:32,663 INFO L93 Difference]: Finished difference Result 229095 states and 347471 transitions. [2020-07-21 14:48:32,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 14:48:32,664 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 340 [2020-07-21 14:48:32,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:48:32,777 INFO L225 Difference]: With dead ends: 229095 [2020-07-21 14:48:32,778 INFO L226 Difference]: Without dead ends: 113773 [2020-07-21 14:48:32,840 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 14:48:32,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113773 states. [2020-07-21 14:48:41,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113773 to 113661. [2020-07-21 14:48:41,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113661 states. [2020-07-21 14:48:41,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113661 states to 113661 states and 172579 transitions. [2020-07-21 14:48:41,423 INFO L78 Accepts]: Start accepts. Automaton has 113661 states and 172579 transitions. Word has length 340 [2020-07-21 14:48:41,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:48:41,423 INFO L479 AbstractCegarLoop]: Abstraction has 113661 states and 172579 transitions. [2020-07-21 14:48:41,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 14:48:41,423 INFO L276 IsEmpty]: Start isEmpty. Operand 113661 states and 172579 transitions. [2020-07-21 14:48:41,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-07-21 14:48:41,473 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:48:41,474 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 14:48:41,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:48:41,675 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 14:48:41,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:48:41,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1375429041, now seen corresponding path program 1 times [2020-07-21 14:48:41,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:48:41,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981298267] [2020-07-21 14:48:41,677 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 14:48:42,045 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:48:42,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:48:42,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 2248 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 14:48:42,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:48:42,124 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 14:48:42,125 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:48:42,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981298267] [2020-07-21 14:48:42,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:48:42,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 14:48:42,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421013732] [2020-07-21 14:48:42,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 14:48:42,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:48:42,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 14:48:42,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:48:42,126 INFO L87 Difference]: Start difference. First operand 113661 states and 172579 transitions. Second operand 3 states. [2020-07-21 14:48:59,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:48:59,035 INFO L93 Difference]: Finished difference Result 249953 states and 385656 transitions. [2020-07-21 14:48:59,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 14:48:59,036 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 343 [2020-07-21 14:48:59,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:48:59,255 INFO L225 Difference]: With dead ends: 249953 [2020-07-21 14:48:59,255 INFO L226 Difference]: Without dead ends: 194765 [2020-07-21 14:48:59,313 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 14:48:59,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194765 states. [2020-07-21 14:49:15,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194765 to 194319. [2020-07-21 14:49:15,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194319 states. [2020-07-21 14:49:16,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194319 states to 194319 states and 296897 transitions. [2020-07-21 14:49:16,070 INFO L78 Accepts]: Start accepts. Automaton has 194319 states and 296897 transitions. Word has length 343 [2020-07-21 14:49:16,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:49:16,070 INFO L479 AbstractCegarLoop]: Abstraction has 194319 states and 296897 transitions. [2020-07-21 14:49:16,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 14:49:16,071 INFO L276 IsEmpty]: Start isEmpty. Operand 194319 states and 296897 transitions. [2020-07-21 14:49:16,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-07-21 14:49:16,163 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:49:16,164 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 14:49:16,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:49:16,365 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 14:49:16,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:49:16,365 INFO L82 PathProgramCache]: Analyzing trace with hash 997636108, now seen corresponding path program 1 times [2020-07-21 14:49:16,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:49:16,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271503539] [2020-07-21 14:49:16,366 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 14:49:16,726 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:49:16,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:49:16,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 2248 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 14:49:16,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:49:16,838 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 14:49:16,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:49:16,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271503539] [2020-07-21 14:49:16,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:49:16,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 14:49:16,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318780157] [2020-07-21 14:49:16,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 14:49:16,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:49:16,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 14:49:16,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:49:16,841 INFO L87 Difference]: Start difference. First operand 194319 states and 296897 transitions. Second operand 3 states. [2020-07-21 14:49:41,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:49:41,102 INFO L93 Difference]: Finished difference Result 352761 states and 545574 transitions. [2020-07-21 14:49:41,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 14:49:41,102 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 343 [2020-07-21 14:49:41,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:49:41,461 INFO L225 Difference]: With dead ends: 352761 [2020-07-21 14:49:41,462 INFO L226 Difference]: Without dead ends: 294145 [2020-07-21 14:49:41,545 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 14:49:41,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294145 states. [2020-07-21 14:50:09,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294145 to 293723. [2020-07-21 14:50:09,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293723 states. [2020-07-21 14:50:10,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293723 states to 293723 states and 450125 transitions. [2020-07-21 14:50:10,343 INFO L78 Accepts]: Start accepts. Automaton has 293723 states and 450125 transitions. Word has length 343 [2020-07-21 14:50:10,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:50:10,344 INFO L479 AbstractCegarLoop]: Abstraction has 293723 states and 450125 transitions. [2020-07-21 14:50:10,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 14:50:10,344 INFO L276 IsEmpty]: Start isEmpty. Operand 293723 states and 450125 transitions. [2020-07-21 14:50:10,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-07-21 14:50:10,480 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:50:10,481 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 14:50:10,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:50:10,682 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 14:50:10,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:50:10,683 INFO L82 PathProgramCache]: Analyzing trace with hash 2007803653, now seen corresponding path program 1 times [2020-07-21 14:50:10,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:50:10,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504502462] [2020-07-21 14:50:10,684 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 14:50:11,048 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:50:11,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:50:11,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 2249 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 14:50:11,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:50:11,333 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 14:50:11,333 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:50:11,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504502462] [2020-07-21 14:50:11,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:50:11,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-21 14:50:11,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155078220] [2020-07-21 14:50:11,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 14:50:11,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:50:11,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 14:50:11,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-21 14:50:11,335 INFO L87 Difference]: Start difference. First operand 293723 states and 450125 transitions. Second operand 8 states. [2020-07-21 14:52:46,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:52:46,318 INFO L93 Difference]: Finished difference Result 1665853 states and 2580946 transitions. [2020-07-21 14:52:46,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-21 14:52:46,318 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 343 [2020-07-21 14:52:46,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:52:48,739 INFO L225 Difference]: With dead ends: 1665853 [2020-07-21 14:52:48,739 INFO L226 Difference]: Without dead ends: 1523239 [2020-07-21 14:52:49,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=350, Unknown=0, NotChecked=0, Total=506 [2020-07-21 14:52:50,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523239 states. [2020-07-21 14:54:48,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523239 to 833871. [2020-07-21 14:54:48,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 833871 states. [2020-07-21 14:54:50,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833871 states to 833871 states and 1281757 transitions. [2020-07-21 14:54:50,313 INFO L78 Accepts]: Start accepts. Automaton has 833871 states and 1281757 transitions. Word has length 343 [2020-07-21 14:54:50,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:54:50,314 INFO L479 AbstractCegarLoop]: Abstraction has 833871 states and 1281757 transitions. [2020-07-21 14:54:50,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 14:54:50,314 INFO L276 IsEmpty]: Start isEmpty. Operand 833871 states and 1281757 transitions. [2020-07-21 14:54:51,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-07-21 14:54:51,990 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:54:51,991 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 14:54:52,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:54:52,198 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 14:54:52,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:54:52,199 INFO L82 PathProgramCache]: Analyzing trace with hash 2008142277, now seen corresponding path program 1 times [2020-07-21 14:54:52,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:54:52,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [69074208] [2020-07-21 14:54:52,199 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 14:54:52,567 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:54:52,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:54:52,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 2248 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 14:54:52,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:54:52,692 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 14:54:52,693 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:54:52,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [69074208] [2020-07-21 14:54:52,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:54:52,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-21 14:54:52,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864698290] [2020-07-21 14:54:52,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-21 14:54:52,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:54:52,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-21 14:54:52,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-07-21 14:54:52,694 INFO L87 Difference]: Start difference. First operand 833871 states and 1281757 transitions. Second operand 9 states.