/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 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 15:09:05,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 15:09:05,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 15:09:05,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 15:09:05,945 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 15:09:05,947 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 15:09:05,949 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 15:09:05,960 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 15:09:05,963 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 15:09:05,964 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 15:09:05,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 15:09:05,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 15:09:05,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 15:09:05,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 15:09:05,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 15:09:05,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 15:09:05,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 15:09:05,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 15:09:05,972 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 15:09:05,974 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 15:09:05,975 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 15:09:05,976 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 15:09:05,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 15:09:05,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 15:09:05,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 15:09:05,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 15:09:05,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 15:09:05,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 15:09:05,990 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 15:09:06,004 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 15:09:06,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 15:09:06,006 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 15:09:06,006 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 15:09:06,006 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 15:09:06,007 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 15:09:06,007 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 15:09:06,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 15:09:06,007 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 15:09:06,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 15:09:06,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 15:09:06,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 15:09:06,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 15:09:06,008 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 15:09:06,008 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 15:09:06,009 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 15:09:06,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 15:09:06,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 15:09:06,009 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 15:09:06,009 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 15:09:06,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 15:09:06,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 15:09:06,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 15:09:06,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 15:09:06,010 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 15:09:06,010 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 15:09:06,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:09:06,011 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 15:09:06,011 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 15:09:06,011 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 -> 4 [2020-07-20 15:09:06,300 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 15:09:06,323 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 15:09:06,327 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 15:09:06,328 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 15:09:06,328 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 15:09:06,329 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-20 15:09:06,404 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23342a73f/27ab36f6f7354e1388b7a77015716c0c/FLAG741342402 [2020-07-20 15:09:07,104 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 15:09:07,105 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-20 15:09:07,132 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23342a73f/27ab36f6f7354e1388b7a77015716c0c/FLAG741342402 [2020-07-20 15:09:07,233 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23342a73f/27ab36f6f7354e1388b7a77015716c0c [2020-07-20 15:09:07,244 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 15:09:07,247 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 15:09:07,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 15:09:07,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 15:09:07,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 15:09:07,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:09:07" (1/1) ... [2020-07-20 15:09:07,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79a47a31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:09:07, skipping insertion in model container [2020-07-20 15:09:07,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:09:07" (1/1) ... [2020-07-20 15:09:07,264 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 15:09:07,414 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 15:09:09,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 15:09:09,087 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 15:09:10,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 15:09:10,088 INFO L208 MainTranslator]: Completed translation [2020-07-20 15:09:10,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:09:10 WrapperNode [2020-07-20 15:09:10,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 15:09:10,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 15:09:10,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 15:09:10,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 15:09:10,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:09:10" (1/1) ... [2020-07-20 15:09:10,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:09:10" (1/1) ... [2020-07-20 15:09:10,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:09:10" (1/1) ... [2020-07-20 15:09:10,140 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:09:10" (1/1) ... [2020-07-20 15:09:10,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:09:10" (1/1) ... [2020-07-20 15:09:10,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:09:10" (1/1) ... [2020-07-20 15:09:10,289 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:09:10" (1/1) ... [2020-07-20 15:09:10,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 15:09:10,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 15:09:10,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 15:09:10,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 15:09:10,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:09:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 15:09:10,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 15:09:10,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 15:09:10,396 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 15:09:10,396 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 15:09:10,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 15:09:10,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-20 15:09:10,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-07-20 15:09:10,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-20 15:09:10,398 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-07-20 15:09:10,398 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 15:09:10,399 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 15:09:10,399 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-07-20 15:09:10,400 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-07-20 15:09:10,400 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-07-20 15:09:10,400 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-07-20 15:09:10,401 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-07-20 15:09:10,401 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-07-20 15:09:10,401 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-07-20 15:09:10,401 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-20 15:09:10,402 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 15:09:10,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 15:09:10,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 15:09:13,820 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 15:09:13,820 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 15:09:13,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:09:13 BoogieIcfgContainer [2020-07-20 15:09:13,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 15:09:13,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 15:09:13,842 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 15:09:13,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 15:09:13,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 03:09:07" (1/3) ... [2020-07-20 15:09:13,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1884a773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:09:13, skipping insertion in model container [2020-07-20 15:09:13,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:09:10" (2/3) ... [2020-07-20 15:09:13,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1884a773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:09:13, skipping insertion in model container [2020-07-20 15:09:13,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:09:13" (3/3) ... [2020-07-20 15:09:13,853 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-20 15:09:13,865 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 15:09:13,879 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-07-20 15:09:13,892 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-07-20 15:09:13,926 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 15:09:13,926 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 15:09:13,926 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 15:09:13,927 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 15:09:13,927 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 15:09:13,927 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 15:09:13,927 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 15:09:13,927 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 15:09:13,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states. [2020-07-20 15:09:14,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-20 15:09:14,006 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:09:14,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 15:09:14,009 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 15:09:14,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:09:14,016 INFO L82 PathProgramCache]: Analyzing trace with hash -537993708, now seen corresponding path program 1 times [2020-07-20 15:09:14,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:09:14,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214110507] [2020-07-20 15:09:14,027 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:09:14,493 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 15:09:14,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:09:14,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 1141 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 15:09:14,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:09:14,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 15:09:14,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:09:14,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214110507] [2020-07-20 15:09:14,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:09:14,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 15:09:14,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556631192] [2020-07-20 15:09:14,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 15:09:14,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:09:14,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 15:09:14,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 15:09:14,856 INFO L87 Difference]: Start difference. First operand 1027 states. Second operand 4 states. [2020-07-20 15:09:15,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:09:15,334 INFO L93 Difference]: Finished difference Result 3017 states and 5407 transitions. [2020-07-20 15:09:15,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 15:09:15,336 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 327 [2020-07-20 15:09:15,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:09:15,365 INFO L225 Difference]: With dead ends: 3017 [2020-07-20 15:09:15,366 INFO L226 Difference]: Without dead ends: 1999 [2020-07-20 15:09:15,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 15:09:15,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1999 states. [2020-07-20 15:09:15,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1999 to 1925. [2020-07-20 15:09:15,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1925 states. [2020-07-20 15:09:15,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1925 states to 1925 states and 2919 transitions. [2020-07-20 15:09:15,545 INFO L78 Accepts]: Start accepts. Automaton has 1925 states and 2919 transitions. Word has length 327 [2020-07-20 15:09:15,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:09:15,548 INFO L479 AbstractCegarLoop]: Abstraction has 1925 states and 2919 transitions. [2020-07-20 15:09:15,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 15:09:15,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1925 states and 2919 transitions. [2020-07-20 15:09:15,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-07-20 15:09:15,561 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:09:15,562 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 15:09:15,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:09:15,776 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 15:09:15,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:09:15,777 INFO L82 PathProgramCache]: Analyzing trace with hash 14058356, now seen corresponding path program 1 times [2020-07-20 15:09:15,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:09:15,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033505423] [2020-07-20 15:09:15,779 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:09:16,141 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 15:09:16,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:09:16,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 15:09:16,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:09:16,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 15:09:16,347 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:09:16,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033505423] [2020-07-20 15:09:16,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:09:16,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 15:09:16,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998583248] [2020-07-20 15:09:16,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 15:09:16,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:09:16,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 15:09:16,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 15:09:16,352 INFO L87 Difference]: Start difference. First operand 1925 states and 2919 transitions. Second operand 3 states. [2020-07-20 15:09:16,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:09:16,652 INFO L93 Difference]: Finished difference Result 5567 states and 8399 transitions. [2020-07-20 15:09:16,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 15:09:16,653 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 329 [2020-07-20 15:09:16,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:09:16,676 INFO L225 Difference]: With dead ends: 5567 [2020-07-20 15:09:16,677 INFO L226 Difference]: Without dead ends: 3744 [2020-07-20 15:09:16,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 15:09:16,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3744 states. [2020-07-20 15:09:16,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3744 to 3678. [2020-07-20 15:09:16,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3678 states. [2020-07-20 15:09:16,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3678 states to 3678 states and 5560 transitions. [2020-07-20 15:09:16,841 INFO L78 Accepts]: Start accepts. Automaton has 3678 states and 5560 transitions. Word has length 329 [2020-07-20 15:09:16,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:09:16,846 INFO L479 AbstractCegarLoop]: Abstraction has 3678 states and 5560 transitions. [2020-07-20 15:09:16,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 15:09:16,847 INFO L276 IsEmpty]: Start isEmpty. Operand 3678 states and 5560 transitions. [2020-07-20 15:09:16,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-07-20 15:09:16,859 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:09:16,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 15:09:17,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:09:17,075 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 15:09:17,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:09:17,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1471558479, now seen corresponding path program 1 times [2020-07-20 15:09:17,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:09:17,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599365746] [2020-07-20 15:09:17,078 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:09:17,325 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 15:09:17,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:09:17,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 15:09:17,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:09:17,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 15:09:17,411 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:09:17,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599365746] [2020-07-20 15:09:17,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:09:17,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 15:09:17,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43051024] [2020-07-20 15:09:17,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 15:09:17,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:09:17,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 15:09:17,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 15:09:17,415 INFO L87 Difference]: Start difference. First operand 3678 states and 5560 transitions. Second operand 3 states. [2020-07-20 15:09:17,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:09:17,700 INFO L93 Difference]: Finished difference Result 11002 states and 16631 transitions. [2020-07-20 15:09:17,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 15:09:17,701 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 329 [2020-07-20 15:09:17,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:09:17,737 INFO L225 Difference]: With dead ends: 11002 [2020-07-20 15:09:17,738 INFO L226 Difference]: Without dead ends: 7339 [2020-07-20 15:09:17,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 15:09:17,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7339 states. [2020-07-20 15:09:17,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7339 to 3689. [2020-07-20 15:09:17,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3689 states. [2020-07-20 15:09:17,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3689 states to 3689 states and 5576 transitions. [2020-07-20 15:09:17,944 INFO L78 Accepts]: Start accepts. Automaton has 3689 states and 5576 transitions. Word has length 329 [2020-07-20 15:09:17,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:09:17,944 INFO L479 AbstractCegarLoop]: Abstraction has 3689 states and 5576 transitions. [2020-07-20 15:09:17,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 15:09:17,944 INFO L276 IsEmpty]: Start isEmpty. Operand 3689 states and 5576 transitions. [2020-07-20 15:09:17,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-07-20 15:09:17,956 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:09:17,957 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 15:09:18,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:09:18,173 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 15:09:18,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:09:18,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1886227890, now seen corresponding path program 1 times [2020-07-20 15:09:18,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:09:18,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578139201] [2020-07-20 15:09:18,176 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:09:18,459 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 15:09:18,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:09:18,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 15:09:18,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:09:18,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 15:09:18,555 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:09:18,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578139201] [2020-07-20 15:09:18,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:09:18,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 15:09:18,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302037868] [2020-07-20 15:09:18,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 15:09:18,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:09:18,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 15:09:18,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 15:09:18,558 INFO L87 Difference]: Start difference. First operand 3689 states and 5576 transitions. Second operand 3 states. [2020-07-20 15:09:18,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:09:18,873 INFO L93 Difference]: Finished difference Result 10959 states and 16549 transitions. [2020-07-20 15:09:18,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 15:09:18,874 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 330 [2020-07-20 15:09:18,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:09:18,909 INFO L225 Difference]: With dead ends: 10959 [2020-07-20 15:09:18,910 INFO L226 Difference]: Without dead ends: 7300 [2020-07-20 15:09:18,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 15:09:18,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7300 states. [2020-07-20 15:09:19,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7300 to 3699. [2020-07-20 15:09:19,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3699 states. [2020-07-20 15:09:19,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3699 states to 3699 states and 5590 transitions. [2020-07-20 15:09:19,119 INFO L78 Accepts]: Start accepts. Automaton has 3699 states and 5590 transitions. Word has length 330 [2020-07-20 15:09:19,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:09:19,120 INFO L479 AbstractCegarLoop]: Abstraction has 3699 states and 5590 transitions. [2020-07-20 15:09:19,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 15:09:19,120 INFO L276 IsEmpty]: Start isEmpty. Operand 3699 states and 5590 transitions. [2020-07-20 15:09:19,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-07-20 15:09:19,134 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:09:19,134 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] [2020-07-20 15:09:19,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:09:19,349 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 15:09:19,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:09:19,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1551869625, now seen corresponding path program 1 times [2020-07-20 15:09:19,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:09:19,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631984868] [2020-07-20 15:09:19,350 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:09:19,644 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 15:09:19,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:09:19,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 1143 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 15:09:19,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:09:19,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 15:09:19,778 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:09:19,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631984868] [2020-07-20 15:09:19,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:09:19,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 15:09:19,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438276228] [2020-07-20 15:09:19,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 15:09:19,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:09:19,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 15:09:19,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 15:09:19,781 INFO L87 Difference]: Start difference. First operand 3699 states and 5590 transitions. Second operand 4 states. [2020-07-20 15:09:20,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:09:20,138 INFO L93 Difference]: Finished difference Result 10754 states and 16190 transitions. [2020-07-20 15:09:20,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 15:09:20,138 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 331 [2020-07-20 15:09:20,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:09:20,171 INFO L225 Difference]: With dead ends: 10754 [2020-07-20 15:09:20,172 INFO L226 Difference]: Without dead ends: 7200 [2020-07-20 15:09:20,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 15:09:20,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7200 states. [2020-07-20 15:09:20,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7200 to 7006. [2020-07-20 15:09:20,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7006 states. [2020-07-20 15:09:20,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7006 states to 7006 states and 10550 transitions. [2020-07-20 15:09:20,470 INFO L78 Accepts]: Start accepts. Automaton has 7006 states and 10550 transitions. Word has length 331 [2020-07-20 15:09:20,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:09:20,471 INFO L479 AbstractCegarLoop]: Abstraction has 7006 states and 10550 transitions. [2020-07-20 15:09:20,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 15:09:20,471 INFO L276 IsEmpty]: Start isEmpty. Operand 7006 states and 10550 transitions. [2020-07-20 15:09:20,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-07-20 15:09:20,495 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:09:20,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 15:09:20,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:09:20,711 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 15:09:20,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:09:20,711 INFO L82 PathProgramCache]: Analyzing trace with hash -34914956, now seen corresponding path program 1 times [2020-07-20 15:09:20,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:09:20,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551835088] [2020-07-20 15:09:20,713 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:09:20,992 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 15:09:20,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:09:20,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 1143 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 15:09:21,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:09:21,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 15:09:21,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:09:21,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551835088] [2020-07-20 15:09:21,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:09:21,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 15:09:21,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062017267] [2020-07-20 15:09:21,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 15:09:21,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:09:21,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 15:09:21,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 15:09:21,138 INFO L87 Difference]: Start difference. First operand 7006 states and 10550 transitions. Second operand 4 states. [2020-07-20 15:09:21,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:09:21,820 INFO L93 Difference]: Finished difference Result 20598 states and 30953 transitions. [2020-07-20 15:09:21,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 15:09:21,821 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 332 [2020-07-20 15:09:21,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:09:21,869 INFO L225 Difference]: With dead ends: 20598 [2020-07-20 15:09:21,869 INFO L226 Difference]: Without dead ends: 13700 [2020-07-20 15:09:21,892 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 [2020-07-20 15:09:21,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13700 states. [2020-07-20 15:09:22,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13700 to 13506. [2020-07-20 15:09:22,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13506 states. [2020-07-20 15:09:22,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13506 states to 13506 states and 20231 transitions. [2020-07-20 15:09:22,417 INFO L78 Accepts]: Start accepts. Automaton has 13506 states and 20231 transitions. Word has length 332 [2020-07-20 15:09:22,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:09:22,418 INFO L479 AbstractCegarLoop]: Abstraction has 13506 states and 20231 transitions. [2020-07-20 15:09:22,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 15:09:22,418 INFO L276 IsEmpty]: Start isEmpty. Operand 13506 states and 20231 transitions. [2020-07-20 15:09:22,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-07-20 15:09:22,449 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:09:22,449 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 15:09:22,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:09:22,664 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 15:09:22,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:09:22,664 INFO L82 PathProgramCache]: Analyzing trace with hash 202202898, now seen corresponding path program 1 times [2020-07-20 15:09:22,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:09:22,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924798305] [2020-07-20 15:09:22,665 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:09:22,991 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 15:09:22,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:09:22,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 15:09:23,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:09:23,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 15:09:23,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:09:23,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924798305] [2020-07-20 15:09:23,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:09:23,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 15:09:23,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874769486] [2020-07-20 15:09:23,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 15:09:23,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:09:23,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 15:09:23,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 15:09:23,078 INFO L87 Difference]: Start difference. First operand 13506 states and 20231 transitions. Second operand 3 states. [2020-07-20 15:09:23,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:09:23,891 INFO L93 Difference]: Finished difference Result 40223 states and 60208 transitions. [2020-07-20 15:09:23,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 15:09:23,892 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 334 [2020-07-20 15:09:23,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:09:23,977 INFO L225 Difference]: With dead ends: 40223 [2020-07-20 15:09:23,977 INFO L226 Difference]: Without dead ends: 26850 [2020-07-20 15:09:24,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 15:09:24,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26850 states. [2020-07-20 15:09:25,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26850 to 13556. [2020-07-20 15:09:25,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13556 states. [2020-07-20 15:09:25,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13556 states to 13556 states and 20296 transitions. [2020-07-20 15:09:25,393 INFO L78 Accepts]: Start accepts. Automaton has 13556 states and 20296 transitions. Word has length 334 [2020-07-20 15:09:25,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:09:25,393 INFO L479 AbstractCegarLoop]: Abstraction has 13556 states and 20296 transitions. [2020-07-20 15:09:25,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 15:09:25,394 INFO L276 IsEmpty]: Start isEmpty. Operand 13556 states and 20296 transitions. [2020-07-20 15:09:25,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-07-20 15:09:25,420 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:09:25,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 15:09:25,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:09:25,635 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 15:09:25,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:09:25,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1461881737, now seen corresponding path program 1 times [2020-07-20 15:09:25,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:09:25,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [677562240] [2020-07-20 15:09:25,638 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:09:25,911 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 15:09:25,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:09:25,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 1146 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 15:09:25,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:09:26,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 15:09:26,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:09:26,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [677562240] [2020-07-20 15:09:26,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:09:26,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 15:09:26,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541323715] [2020-07-20 15:09:26,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 15:09:26,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:09:26,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 15:09:26,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 15:09:26,048 INFO L87 Difference]: Start difference. First operand 13556 states and 20296 transitions. Second operand 4 states. [2020-07-20 15:09:26,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:09:26,889 INFO L93 Difference]: Finished difference Result 39766 states and 59365 transitions. [2020-07-20 15:09:26,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 15:09:26,890 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 334 [2020-07-20 15:09:26,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:09:26,957 INFO L225 Difference]: With dead ends: 39766 [2020-07-20 15:09:26,957 INFO L226 Difference]: Without dead ends: 26621 [2020-07-20 15:09:26,989 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 [2020-07-20 15:09:27,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26621 states. [2020-07-20 15:09:27,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26621 to 26443. [2020-07-20 15:09:27,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26443 states. [2020-07-20 15:09:27,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26443 states to 26443 states and 39325 transitions. [2020-07-20 15:09:27,917 INFO L78 Accepts]: Start accepts. Automaton has 26443 states and 39325 transitions. Word has length 334 [2020-07-20 15:09:27,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:09:27,917 INFO L479 AbstractCegarLoop]: Abstraction has 26443 states and 39325 transitions. [2020-07-20 15:09:27,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 15:09:27,918 INFO L276 IsEmpty]: Start isEmpty. Operand 26443 states and 39325 transitions. [2020-07-20 15:09:27,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-07-20 15:09:27,961 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:09:27,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 15:09:28,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:09:28,175 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 15:09:28,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:09:28,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1593713889, now seen corresponding path program 1 times [2020-07-20 15:09:28,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:09:28,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229715085] [2020-07-20 15:09:28,178 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:09:28,423 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 15:09:28,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:09:28,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 1013 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 15:09:28,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:09:28,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 15:09:28,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:09:28,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229715085] [2020-07-20 15:09:28,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:09:28,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 15:09:28,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599402557] [2020-07-20 15:09:28,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 15:09:28,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:09:28,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 15:09:28,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 15:09:28,510 INFO L87 Difference]: Start difference. First operand 26443 states and 39325 transitions. Second operand 4 states. [2020-07-20 15:09:30,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:09:30,196 INFO L93 Difference]: Finished difference Result 74522 states and 110403 transitions. [2020-07-20 15:09:30,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 15:09:30,197 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 335 [2020-07-20 15:09:30,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:09:30,307 INFO L225 Difference]: With dead ends: 74522 [2020-07-20 15:09:30,308 INFO L226 Difference]: Without dead ends: 49660 [2020-07-20 15:09:30,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 15:09:30,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49660 states. [2020-07-20 15:09:32,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49660 to 28004. [2020-07-20 15:09:32,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28004 states. [2020-07-20 15:09:32,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28004 states to 28004 states and 41899 transitions. [2020-07-20 15:09:32,402 INFO L78 Accepts]: Start accepts. Automaton has 28004 states and 41899 transitions. Word has length 335 [2020-07-20 15:09:32,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:09:32,402 INFO L479 AbstractCegarLoop]: Abstraction has 28004 states and 41899 transitions. [2020-07-20 15:09:32,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 15:09:32,402 INFO L276 IsEmpty]: Start isEmpty. Operand 28004 states and 41899 transitions. [2020-07-20 15:09:32,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-07-20 15:09:32,427 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:09:32,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 15:09:32,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:09:32,635 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 15:09:32,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:09:32,636 INFO L82 PathProgramCache]: Analyzing trace with hash -309629539, now seen corresponding path program 1 times [2020-07-20 15:09:32,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:09:32,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335294126] [2020-07-20 15:09:32,638 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:09:32,882 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 15:09:32,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:09:32,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 1014 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 15:09:32,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:09:32,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 15:09:32,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:09:32,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335294126] [2020-07-20 15:09:32,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:09:32,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 15:09:32,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936593861] [2020-07-20 15:09:32,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 15:09:32,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:09:32,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 15:09:32,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 15:09:32,976 INFO L87 Difference]: Start difference. First operand 28004 states and 41899 transitions. Second operand 4 states. [2020-07-20 15:09:34,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:09:34,450 INFO L93 Difference]: Finished difference Result 77438 states and 115191 transitions. [2020-07-20 15:09:34,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 15:09:34,451 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 337 [2020-07-20 15:09:34,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:09:34,719 INFO L225 Difference]: With dead ends: 77438 [2020-07-20 15:09:34,719 INFO L226 Difference]: Without dead ends: 52232 [2020-07-20 15:09:34,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 15:09:34,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52232 states. [2020-07-20 15:09:35,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52232 to 30620. [2020-07-20 15:09:35,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30620 states. [2020-07-20 15:09:35,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30620 states to 30620 states and 46159 transitions. [2020-07-20 15:09:35,843 INFO L78 Accepts]: Start accepts. Automaton has 30620 states and 46159 transitions. Word has length 337 [2020-07-20 15:09:35,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:09:35,843 INFO L479 AbstractCegarLoop]: Abstraction has 30620 states and 46159 transitions. [2020-07-20 15:09:35,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 15:09:35,843 INFO L276 IsEmpty]: Start isEmpty. Operand 30620 states and 46159 transitions. [2020-07-20 15:09:35,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-07-20 15:09:35,869 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:09:35,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 15:09:36,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:09:36,085 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 15:09:36,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:09:36,086 INFO L82 PathProgramCache]: Analyzing trace with hash -149788684, now seen corresponding path program 1 times [2020-07-20 15:09:36,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:09:36,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764102063] [2020-07-20 15:09:36,087 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:09:36,313 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 15:09:36,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:09:36,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 1017 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 15:09:36,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:09:37,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 15:09:37,207 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:09:37,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764102063] [2020-07-20 15:09:37,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:09:37,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 15:09:37,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386282557] [2020-07-20 15:09:37,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 15:09:37,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:09:37,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 15:09:37,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 15:09:37,209 INFO L87 Difference]: Start difference. First operand 30620 states and 46159 transitions. Second operand 3 states. [2020-07-20 15:09:38,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:09:38,748 INFO L93 Difference]: Finished difference Result 80876 states and 120077 transitions. [2020-07-20 15:09:38,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 15:09:38,748 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 339 [2020-07-20 15:09:38,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:09:38,963 INFO L225 Difference]: With dead ends: 80876 [2020-07-20 15:09:38,963 INFO L226 Difference]: Without dead ends: 55822 [2020-07-20 15:09:38,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 15:09:39,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55822 states. [2020-07-20 15:09:40,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55822 to 31344. [2020-07-20 15:09:40,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31344 states. [2020-07-20 15:09:40,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31344 states to 31344 states and 47043 transitions. [2020-07-20 15:09:40,074 INFO L78 Accepts]: Start accepts. Automaton has 31344 states and 47043 transitions. Word has length 339 [2020-07-20 15:09:40,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:09:40,074 INFO L479 AbstractCegarLoop]: Abstraction has 31344 states and 47043 transitions. [2020-07-20 15:09:40,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 15:09:40,074 INFO L276 IsEmpty]: Start isEmpty. Operand 31344 states and 47043 transitions. [2020-07-20 15:09:40,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-07-20 15:09:40,109 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:09:40,109 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] [2020-07-20 15:09:40,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:09:40,324 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 15:09:40,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:09:40,325 INFO L82 PathProgramCache]: Analyzing trace with hash 469398825, now seen corresponding path program 1 times [2020-07-20 15:09:40,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:09:40,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775570740] [2020-07-20 15:09:40,327 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:09:40,570 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 15:09:40,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:09:40,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 15:09:40,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:09:40,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 15:09:40,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:09:40,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775570740] [2020-07-20 15:09:40,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:09:40,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 15:09:40,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515655873] [2020-07-20 15:09:40,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 15:09:40,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:09:40,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 15:09:40,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-07-20 15:09:40,743 INFO L87 Difference]: Start difference. First operand 31344 states and 47043 transitions. Second operand 9 states. [2020-07-20 15:09:56,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:09:56,870 INFO L93 Difference]: Finished difference Result 201538 states and 305311 transitions. [2020-07-20 15:09:56,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-07-20 15:09:56,871 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 340 [2020-07-20 15:09:56,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:09:57,093 INFO L225 Difference]: With dead ends: 201538 [2020-07-20 15:09:57,093 INFO L226 Difference]: Without dead ends: 194568 [2020-07-20 15:09:57,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=370, Invalid=1112, Unknown=0, NotChecked=0, Total=1482 [2020-07-20 15:09:57,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194568 states. [2020-07-20 15:10:00,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194568 to 70372. [2020-07-20 15:10:00,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70372 states. [2020-07-20 15:10:01,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70372 states to 70372 states and 105851 transitions. [2020-07-20 15:10:01,008 INFO L78 Accepts]: Start accepts. Automaton has 70372 states and 105851 transitions. Word has length 340 [2020-07-20 15:10:01,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:10:01,009 INFO L479 AbstractCegarLoop]: Abstraction has 70372 states and 105851 transitions. [2020-07-20 15:10:01,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 15:10:01,009 INFO L276 IsEmpty]: Start isEmpty. Operand 70372 states and 105851 transitions. [2020-07-20 15:10:01,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-07-20 15:10:01,055 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:10:01,055 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] [2020-07-20 15:10:01,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:10:01,256 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 15:10:01,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:10:01,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1882496682, now seen corresponding path program 1 times [2020-07-20 15:10:01,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:10:01,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512733958] [2020-07-20 15:10:01,258 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:10:01,552 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 15:10:01,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:10:01,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 1303 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 15:10:01,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:10:01,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 15:10:01,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:10:01,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512733958] [2020-07-20 15:10:01,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:10:01,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 15:10:01,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384911699] [2020-07-20 15:10:01,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 15:10:01,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:10:01,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 15:10:01,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 15:10:01,630 INFO L87 Difference]: Start difference. First operand 70372 states and 105851 transitions. Second operand 3 states. [2020-07-20 15:10:06,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:10:06,723 INFO L93 Difference]: Finished difference Result 141544 states and 214074 transitions. [2020-07-20 15:10:06,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 15:10:06,724 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 340 [2020-07-20 15:10:06,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:10:06,813 INFO L225 Difference]: With dead ends: 141544 [2020-07-20 15:10:06,814 INFO L226 Difference]: Without dead ends: 90434 [2020-07-20 15:10:06,853 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 [2020-07-20 15:10:06,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90434 states. [2020-07-20 15:10:10,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90434 to 80462. [2020-07-20 15:10:10,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80462 states. [2020-07-20 15:10:10,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80462 states to 80462 states and 122357 transitions. [2020-07-20 15:10:10,695 INFO L78 Accepts]: Start accepts. Automaton has 80462 states and 122357 transitions. Word has length 340 [2020-07-20 15:10:10,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:10:10,696 INFO L479 AbstractCegarLoop]: Abstraction has 80462 states and 122357 transitions. [2020-07-20 15:10:10,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 15:10:10,696 INFO L276 IsEmpty]: Start isEmpty. Operand 80462 states and 122357 transitions. [2020-07-20 15:10:10,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-07-20 15:10:10,755 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:10:10,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 15:10:10,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:10:10,964 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 15:10:10,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:10:10,965 INFO L82 PathProgramCache]: Analyzing trace with hash -681231149, now seen corresponding path program 1 times [2020-07-20 15:10:10,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:10:10,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151151680] [2020-07-20 15:10:10,966 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:10:11,242 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 15:10:11,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:10:11,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 1163 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 15:10:11,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:10:11,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 15:10:11,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:10:11,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151151680] [2020-07-20 15:10:11,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:10:11,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 15:10:11,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591546152] [2020-07-20 15:10:11,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 15:10:11,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:10:11,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 15:10:11,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 15:10:11,322 INFO L87 Difference]: Start difference. First operand 80462 states and 122357 transitions. Second operand 4 states. [2020-07-20 15:10:16,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:10:16,151 INFO L93 Difference]: Finished difference Result 155358 states and 235539 transitions. [2020-07-20 15:10:16,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 15:10:16,152 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 341 [2020-07-20 15:10:16,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:10:16,251 INFO L225 Difference]: With dead ends: 155358 [2020-07-20 15:10:16,252 INFO L226 Difference]: Without dead ends: 79962 [2020-07-20 15:10:16,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 15:10:16,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79962 states. [2020-07-20 15:10:20,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79962 to 79962. [2020-07-20 15:10:20,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79962 states. [2020-07-20 15:10:20,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79962 states to 79962 states and 121473 transitions. [2020-07-20 15:10:20,164 INFO L78 Accepts]: Start accepts. Automaton has 79962 states and 121473 transitions. Word has length 341 [2020-07-20 15:10:20,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:10:20,165 INFO L479 AbstractCegarLoop]: Abstraction has 79962 states and 121473 transitions. [2020-07-20 15:10:20,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 15:10:20,165 INFO L276 IsEmpty]: Start isEmpty. Operand 79962 states and 121473 transitions. [2020-07-20 15:10:20,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-07-20 15:10:20,210 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:10:20,210 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 15:10:20,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:10:20,411 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 15:10:20,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:10:20,412 INFO L82 PathProgramCache]: Analyzing trace with hash 480302238, now seen corresponding path program 1 times [2020-07-20 15:10:20,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:10:20,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137521070] [2020-07-20 15:10:20,413 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:10:20,655 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 15:10:20,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:10:20,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 1015 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 15:10:20,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:10:20,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 15:10:20,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:10:20,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137521070] [2020-07-20 15:10:20,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:10:20,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 15:10:20,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894765135] [2020-07-20 15:10:20,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 15:10:20,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:10:20,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 15:10:20,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 15:10:20,722 INFO L87 Difference]: Start difference. First operand 79962 states and 121473 transitions. Second operand 4 states. [2020-07-20 15:10:28,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:10:28,536 INFO L93 Difference]: Finished difference Result 206505 states and 313107 transitions. [2020-07-20 15:10:28,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 15:10:28,537 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 341 [2020-07-20 15:10:28,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:10:28,685 INFO L225 Difference]: With dead ends: 206505 [2020-07-20 15:10:28,685 INFO L226 Difference]: Without dead ends: 130821 [2020-07-20 15:10:28,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 15:10:28,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130821 states. [2020-07-20 15:10:32,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130821 to 75058. [2020-07-20 15:10:32,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75058 states. [2020-07-20 15:10:32,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75058 states to 75058 states and 114290 transitions. [2020-07-20 15:10:32,882 INFO L78 Accepts]: Start accepts. Automaton has 75058 states and 114290 transitions. Word has length 341 [2020-07-20 15:10:32,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:10:32,882 INFO L479 AbstractCegarLoop]: Abstraction has 75058 states and 114290 transitions. [2020-07-20 15:10:32,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 15:10:32,883 INFO L276 IsEmpty]: Start isEmpty. Operand 75058 states and 114290 transitions. [2020-07-20 15:10:32,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-07-20 15:10:32,924 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:10:32,924 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] [2020-07-20 15:10:33,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:10:33,125 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 15:10:33,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:10:33,126 INFO L82 PathProgramCache]: Analyzing trace with hash -193609458, now seen corresponding path program 1 times [2020-07-20 15:10:33,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:10:33,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724268463] [2020-07-20 15:10:33,127 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:10:33,418 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 15:10:33,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:10:33,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 1310 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 15:10:33,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:10:33,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 15:10:33,511 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:10:33,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724268463] [2020-07-20 15:10:33,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:10:33,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 15:10:33,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659328461] [2020-07-20 15:10:33,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 15:10:33,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:10:33,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 15:10:33,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 15:10:33,513 INFO L87 Difference]: Start difference. First operand 75058 states and 114290 transitions. Second operand 3 states. [2020-07-20 15:10:42,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:10:42,060 INFO L93 Difference]: Finished difference Result 218216 states and 331356 transitions. [2020-07-20 15:10:42,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 15:10:42,061 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 343 [2020-07-20 15:10:42,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:10:42,232 INFO L225 Difference]: With dead ends: 218216 [2020-07-20 15:10:42,232 INFO L226 Difference]: Without dead ends: 146939 [2020-07-20 15:10:42,309 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 [2020-07-20 15:10:42,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146939 states. [2020-07-20 15:10:52,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146939 to 146705. [2020-07-20 15:10:52,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146705 states. [2020-07-20 15:10:52,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146705 states to 146705 states and 222209 transitions. [2020-07-20 15:10:52,872 INFO L78 Accepts]: Start accepts. Automaton has 146705 states and 222209 transitions. Word has length 343 [2020-07-20 15:10:52,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:10:52,873 INFO L479 AbstractCegarLoop]: Abstraction has 146705 states and 222209 transitions. [2020-07-20 15:10:52,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 15:10:52,873 INFO L276 IsEmpty]: Start isEmpty. Operand 146705 states and 222209 transitions. [2020-07-20 15:10:52,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-07-20 15:10:52,973 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:10:52,974 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 15:10:53,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:10:53,187 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 15:10:53,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:10:53,188 INFO L82 PathProgramCache]: Analyzing trace with hash -397452008, now seen corresponding path program 1 times [2020-07-20 15:10:53,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:10:53,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269503362] [2020-07-20 15:10:53,189 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:10:53,458 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 15:10:53,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:10:53,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 1167 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 15:10:53,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:10:53,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 15:10:53,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:10:53,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269503362] [2020-07-20 15:10:53,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:10:53,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 15:10:53,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483996166] [2020-07-20 15:10:53,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 15:10:53,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:10:53,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 15:10:53,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 15:10:53,557 INFO L87 Difference]: Start difference. First operand 146705 states and 222209 transitions. Second operand 3 states. [2020-07-20 15:11:10,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:11:10,795 INFO L93 Difference]: Finished difference Result 436348 states and 660694 transitions. [2020-07-20 15:11:10,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 15:11:10,796 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 344 [2020-07-20 15:11:10,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:11:11,179 INFO L225 Difference]: With dead ends: 436348 [2020-07-20 15:11:11,180 INFO L226 Difference]: Without dead ends: 291887 [2020-07-20 15:11:11,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 15:11:11,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291887 states. [2020-07-20 15:11:20,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291887 to 147360. [2020-07-20 15:11:20,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147360 states. [2020-07-20 15:11:21,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147360 states to 147360 states and 223111 transitions. [2020-07-20 15:11:21,123 INFO L78 Accepts]: Start accepts. Automaton has 147360 states and 223111 transitions. Word has length 344 [2020-07-20 15:11:21,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:11:21,123 INFO L479 AbstractCegarLoop]: Abstraction has 147360 states and 223111 transitions. [2020-07-20 15:11:21,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 15:11:21,124 INFO L276 IsEmpty]: Start isEmpty. Operand 147360 states and 223111 transitions. [2020-07-20 15:11:21,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-07-20 15:11:21,207 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:11:21,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 15:11:21,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:11:21,408 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 15:11:21,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:11:21,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1361238697, now seen corresponding path program 1 times [2020-07-20 15:11:21,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:11:21,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702286835] [2020-07-20 15:11:21,409 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:11:21,675 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 15:11:21,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:11:21,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 1169 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 15:11:21,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:11:21,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 15:11:21,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:11:21,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702286835] [2020-07-20 15:11:21,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:11:21,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 15:11:21,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494240877] [2020-07-20 15:11:21,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 15:11:21,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:11:21,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 15:11:21,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 15:11:21,746 INFO L87 Difference]: Start difference. First operand 147360 states and 223111 transitions. Second operand 4 states. [2020-07-20 15:11:33,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:11:33,375 INFO L93 Difference]: Finished difference Result 308797 states and 466784 transitions. [2020-07-20 15:11:33,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 15:11:33,376 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 345 [2020-07-20 15:11:33,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:11:33,546 INFO L225 Difference]: With dead ends: 308797 [2020-07-20 15:11:33,546 INFO L226 Difference]: Without dead ends: 155832 [2020-07-20 15:11:33,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 15:11:33,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155832 states. [2020-07-20 15:11:42,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155832 to 155598. [2020-07-20 15:11:42,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155598 states. [2020-07-20 15:11:47,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155598 states to 155598 states and 233882 transitions. [2020-07-20 15:11:47,201 INFO L78 Accepts]: Start accepts. Automaton has 155598 states and 233882 transitions. Word has length 345 [2020-07-20 15:11:47,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:11:47,201 INFO L479 AbstractCegarLoop]: Abstraction has 155598 states and 233882 transitions. [2020-07-20 15:11:47,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 15:11:47,201 INFO L276 IsEmpty]: Start isEmpty. Operand 155598 states and 233882 transitions. [2020-07-20 15:11:47,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2020-07-20 15:11:47,282 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:11:47,282 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 15:11:47,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:11:47,483 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 15:11:47,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:11:47,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1437698851, now seen corresponding path program 1 times [2020-07-20 15:11:47,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:11:47,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780161782] [2020-07-20 15:11:47,484 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:11:47,738 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 15:11:47,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:11:47,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 1045 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 15:11:47,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:11:47,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 15:11:47,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:11:47,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780161782] [2020-07-20 15:11:47,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:11:47,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 15:11:47,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195723809] [2020-07-20 15:11:47,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 15:11:47,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:11:47,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 15:11:47,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-07-20 15:11:47,859 INFO L87 Difference]: Start difference. First operand 155598 states and 233882 transitions. Second operand 9 states. [2020-07-20 15:13:23,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:13:23,692 INFO L93 Difference]: Finished difference Result 1149711 states and 1767689 transitions. [2020-07-20 15:13:23,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-07-20 15:13:23,692 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 347 [2020-07-20 15:13:23,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:13:25,422 INFO L225 Difference]: With dead ends: 1149711 [2020-07-20 15:13:25,422 INFO L226 Difference]: Without dead ends: 1098643 [2020-07-20 15:13:25,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=347, Invalid=985, Unknown=0, NotChecked=0, Total=1332 [2020-07-20 15:13:26,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098643 states. [2020-07-20 15:14:07,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098643 to 379404. [2020-07-20 15:14:07,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379404 states. [2020-07-20 15:14:08,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379404 states to 379404 states and 573900 transitions. [2020-07-20 15:14:08,223 INFO L78 Accepts]: Start accepts. Automaton has 379404 states and 573900 transitions. Word has length 347 [2020-07-20 15:14:08,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:14:08,223 INFO L479 AbstractCegarLoop]: Abstraction has 379404 states and 573900 transitions. [2020-07-20 15:14:08,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 15:14:08,224 INFO L276 IsEmpty]: Start isEmpty. Operand 379404 states and 573900 transitions. [2020-07-20 15:14:08,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2020-07-20 15:14:08,485 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:14:08,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 15:14:08,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:14:08,694 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 15:14:08,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:14:08,695 INFO L82 PathProgramCache]: Analyzing trace with hash -2142695497, now seen corresponding path program 1 times [2020-07-20 15:14:08,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:14:08,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000213441] [2020-07-20 15:14:08,696 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:14:08,984 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 15:14:08,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:14:08,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 1322 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 15:14:08,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:14:09,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 15:14:09,046 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:14:09,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000213441] [2020-07-20 15:14:09,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:14:09,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 15:14:09,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177672965] [2020-07-20 15:14:09,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 15:14:09,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:14:09,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 15:14:09,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 15:14:09,048 INFO L87 Difference]: Start difference. First operand 379404 states and 573900 transitions. Second operand 3 states. [2020-07-20 15:15:01,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:15:01,098 INFO L93 Difference]: Finished difference Result 915840 states and 1396809 transitions. [2020-07-20 15:15:01,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 15:15:01,098 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 347 [2020-07-20 15:15:01,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:15:01,997 INFO L225 Difference]: With dead ends: 915840 [2020-07-20 15:15:01,997 INFO L226 Difference]: Without dead ends: 568632 [2020-07-20 15:15:02,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 15:15:02,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568632 states. [2020-07-20 15:16:00,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568632 to 489472. [2020-07-20 15:16:00,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489472 states. [2020-07-20 15:16:02,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489472 states to 489472 states and 750614 transitions. [2020-07-20 15:16:02,156 INFO L78 Accepts]: Start accepts. Automaton has 489472 states and 750614 transitions. Word has length 347 [2020-07-20 15:16:02,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:16:02,156 INFO L479 AbstractCegarLoop]: Abstraction has 489472 states and 750614 transitions. [2020-07-20 15:16:02,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 15:16:02,156 INFO L276 IsEmpty]: Start isEmpty. Operand 489472 states and 750614 transitions. [2020-07-20 15:16:02,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2020-07-20 15:16:02,391 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:16:02,391 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 15:16:02,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:16:02,592 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 15:16:02,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:16:02,593 INFO L82 PathProgramCache]: Analyzing trace with hash 623232050, now seen corresponding path program 1 times [2020-07-20 15:16:02,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:16:02,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733144356] [2020-07-20 15:16:02,596 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:16:02,889 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 15:16:02,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:16:02,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 15:16:02,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:16:02,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 15:16:02,996 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:16:02,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733144356] [2020-07-20 15:16:02,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:16:02,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 15:16:02,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789269228] [2020-07-20 15:16:02,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 15:16:02,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:16:02,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 15:16:02,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 15:16:02,998 INFO L87 Difference]: Start difference. First operand 489472 states and 750614 transitions. Second operand 3 states. [2020-07-20 15:17:38,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 15:17:38,458 INFO L93 Difference]: Finished difference Result 1418748 states and 2172078 transitions. [2020-07-20 15:17:38,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 15:17:38,459 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 347 [2020-07-20 15:17:38,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 15:17:40,074 INFO L225 Difference]: With dead ends: 1418748 [2020-07-20 15:17:40,074 INFO L226 Difference]: Without dead ends: 946646 [2020-07-20 15:17:40,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 15:17:41,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946646 states. [2020-07-20 15:19:29,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946646 to 945766. [2020-07-20 15:19:29,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 945766 states. [2020-07-20 15:19:31,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945766 states to 945766 states and 1440797 transitions. [2020-07-20 15:19:31,085 INFO L78 Accepts]: Start accepts. Automaton has 945766 states and 1440797 transitions. Word has length 347 [2020-07-20 15:19:31,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 15:19:31,086 INFO L479 AbstractCegarLoop]: Abstraction has 945766 states and 1440797 transitions. [2020-07-20 15:19:31,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 15:19:31,086 INFO L276 IsEmpty]: Start isEmpty. Operand 945766 states and 1440797 transitions. [2020-07-20 15:19:31,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2020-07-20 15:19:31,549 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 15:19:31,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 15:19:31,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:19:31,750 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 15:19:31,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 15:19:31,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1853818091, now seen corresponding path program 1 times [2020-07-20 15:19:31,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 15:19:31,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965247679] [2020-07-20 15:19:31,753 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 15:19:31,999 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 15:19:31,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 15:19:32,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 15:19:32,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 15:19:33,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 15:19:33,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 15:19:33,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965247679] [2020-07-20 15:19:33,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 15:19:33,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 15:19:33,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706850251] [2020-07-20 15:19:33,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 15:19:33,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 15:19:33,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 15:19:33,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-07-20 15:19:33,434 INFO L87 Difference]: Start difference. First operand 945766 states and 1440797 transitions. Second operand 9 states.