/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 NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 12:23:36,271 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 12:23:36,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 12:23:36,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 12:23:36,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 12:23:36,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 12:23:36,297 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 12:23:36,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 12:23:36,311 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 12:23:36,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 12:23:36,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 12:23:36,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 12:23:36,319 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 12:23:36,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 12:23:36,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 12:23:36,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 12:23:36,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 12:23:36,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 12:23:36,329 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 12:23:36,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 12:23:36,340 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 12:23:36,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 12:23:36,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 12:23:36,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 12:23:36,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 12:23:36,361 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 12:23:36,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 12:23:36,363 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 12:23:36,364 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 12:23:36,401 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 12:23:36,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 12:23:36,402 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 12:23:36,403 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 12:23:36,403 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 12:23:36,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 12:23:36,404 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 12:23:36,405 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 12:23:36,405 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 12:23:36,405 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 12:23:36,405 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 12:23:36,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 12:23:36,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 12:23:36,406 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 12:23:36,406 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 12:23:36,406 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 12:23:36,406 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 12:23:36,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 12:23:36,407 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 12:23:36,407 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 12:23:36,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 12:23:36,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 12:23:36,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 12:23:36,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 12:23:36,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 12:23:36,409 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 12:23:36,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:23:36,410 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 12:23:36,410 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 12:23:36,410 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 -> NOT_INCREMENTALLY [2020-07-21 12:23:36,671 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 12:23:36,685 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 12:23:36,689 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 12:23:36,690 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 12:23:36,690 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 12:23:36,691 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-21 12:23:36,764 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c023be322/fa73273b6c1f4e5fa4923a404f8d14a0/FLAG99e0787e2 [2020-07-21 12:23:37,468 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 12:23:37,469 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-21 12:23:37,487 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c023be322/fa73273b6c1f4e5fa4923a404f8d14a0/FLAG99e0787e2 [2020-07-21 12:23:37,588 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c023be322/fa73273b6c1f4e5fa4923a404f8d14a0 [2020-07-21 12:23:37,599 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 12:23:37,602 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 12:23:37,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 12:23:37,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 12:23:37,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 12:23:37,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:23:37" (1/1) ... [2020-07-21 12:23:37,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54ee4bd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:23:37, skipping insertion in model container [2020-07-21 12:23:37,611 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:23:37" (1/1) ... [2020-07-21 12:23:37,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 12:23:37,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 12:23:39,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:23:39,283 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 12:23:40,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:23:40,306 INFO L208 MainTranslator]: Completed translation [2020-07-21 12:23:40,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:23:40 WrapperNode [2020-07-21 12:23:40,307 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 12:23:40,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 12:23:40,308 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 12:23:40,308 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 12:23:40,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:23:40" (1/1) ... [2020-07-21 12:23:40,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:23:40" (1/1) ... [2020-07-21 12:23:40,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:23:40" (1/1) ... [2020-07-21 12:23:40,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:23:40" (1/1) ... [2020-07-21 12:23:40,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:23:40" (1/1) ... [2020-07-21 12:23:40,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:23:40" (1/1) ... [2020-07-21 12:23:40,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:23:40" (1/1) ... [2020-07-21 12:23:40,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 12:23:40,508 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 12:23:40,508 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 12:23:40,508 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 12:23:40,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:23:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 12:23:40,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 12:23:40,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 12:23:40,592 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 12:23:40,592 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 12:23:40,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 12:23:40,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-21 12:23:40,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-07-21 12:23:40,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-21 12:23:40,593 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-07-21 12:23:40,594 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 12:23:40,594 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 12:23:40,594 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-07-21 12:23:40,594 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-07-21 12:23:40,594 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-07-21 12:23:40,595 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-07-21 12:23:40,595 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-07-21 12:23:40,595 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-07-21 12:23:40,595 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-07-21 12:23:40,595 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-21 12:23:40,596 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 12:23:40,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 12:23:40,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 12:23:43,866 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 12:23:43,867 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 12:23:43,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:23:43 BoogieIcfgContainer [2020-07-21 12:23:43,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 12:23:43,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 12:23:43,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 12:23:43,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 12:23:43,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:23:37" (1/3) ... [2020-07-21 12:23:43,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77b80b39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:23:43, skipping insertion in model container [2020-07-21 12:23:43,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:23:40" (2/3) ... [2020-07-21 12:23:43,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77b80b39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:23:43, skipping insertion in model container [2020-07-21 12:23:43,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:23:43" (3/3) ... [2020-07-21 12:23:43,896 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-07-21 12:23:43,908 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 12:23:43,919 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-07-21 12:23:43,934 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-07-21 12:23:43,967 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 12:23:43,967 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 12:23:43,967 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 12:23:43,968 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 12:23:43,968 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 12:23:43,968 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 12:23:43,968 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 12:23:43,968 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 12:23:44,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states. [2020-07-21 12:23:44,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-21 12:23:44,041 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:23:44,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:23:44,043 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:23:44,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:23:44,049 INFO L82 PathProgramCache]: Analyzing trace with hash -537993708, now seen corresponding path program 1 times [2020-07-21 12:23:44,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:23:44,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897247141] [2020-07-21 12:23:44,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:23:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:23:44,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 2206 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 12:23:44,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:23:44,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:23:44,955 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:23:44,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897247141] [2020-07-21 12:23:44,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:23:44,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:23:44,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855538489] [2020-07-21 12:23:44,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:23:44,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:23:44,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:23:44,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:23:44,982 INFO L87 Difference]: Start difference. First operand 1027 states. Second operand 3 states. [2020-07-21 12:23:45,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:23:45,279 INFO L93 Difference]: Finished difference Result 1794 states and 3183 transitions. [2020-07-21 12:23:45,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:23:45,281 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 327 [2020-07-21 12:23:45,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:23:45,310 INFO L225 Difference]: With dead ends: 1794 [2020-07-21 12:23:45,310 INFO L226 Difference]: Without dead ends: 1483 [2020-07-21 12:23:45,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:23:45,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states. [2020-07-21 12:23:45,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 1481. [2020-07-21 12:23:45,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1481 states. [2020-07-21 12:23:45,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 2263 transitions. [2020-07-21 12:23:45,462 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 2263 transitions. Word has length 327 [2020-07-21 12:23:45,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:23:45,467 INFO L479 AbstractCegarLoop]: Abstraction has 1481 states and 2263 transitions. [2020-07-21 12:23:45,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:23:45,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 2263 transitions. [2020-07-21 12:23:45,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-21 12:23:45,480 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:23:45,480 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:23:45,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:23:45,695 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:23:45,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:23:45,696 INFO L82 PathProgramCache]: Analyzing trace with hash 297127498, now seen corresponding path program 1 times [2020-07-21 12:23:45,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:23:45,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894391677] [2020-07-21 12:23:45,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:23:46,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:23:46,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 2206 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 12:23:46,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:23:46,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:23:46,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:23:46,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894391677] [2020-07-21 12:23:46,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:23:46,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:23:46,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24311732] [2020-07-21 12:23:46,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:23:46,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:23:46,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:23:46,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:23:46,398 INFO L87 Difference]: Start difference. First operand 1481 states and 2263 transitions. Second operand 3 states. [2020-07-21 12:23:46,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:23:46,701 INFO L93 Difference]: Finished difference Result 2844 states and 4401 transitions. [2020-07-21 12:23:46,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:23:46,702 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 327 [2020-07-21 12:23:46,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:23:46,718 INFO L225 Difference]: With dead ends: 2844 [2020-07-21 12:23:46,718 INFO L226 Difference]: Without dead ends: 2425 [2020-07-21 12:23:46,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:23:46,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2020-07-21 12:23:46,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2423. [2020-07-21 12:23:46,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2423 states. [2020-07-21 12:23:46,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 3727 transitions. [2020-07-21 12:23:46,816 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 3727 transitions. Word has length 327 [2020-07-21 12:23:46,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:23:46,817 INFO L479 AbstractCegarLoop]: Abstraction has 2423 states and 3727 transitions. [2020-07-21 12:23:46,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:23:46,817 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 3727 transitions. [2020-07-21 12:23:46,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-21 12:23:46,827 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:23:46,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:23:47,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:23:47,043 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:23:47,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:23:47,044 INFO L82 PathProgramCache]: Analyzing trace with hash -586459585, now seen corresponding path program 1 times [2020-07-21 12:23:47,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:23:47,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990889066] [2020-07-21 12:23:47,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:23:47,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:23:47,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 2207 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 12:23:47,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:23:47,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:23:47,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:23:47,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990889066] [2020-07-21 12:23:47,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:23:47,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:23:47,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30407482] [2020-07-21 12:23:47,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:23:47,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:23:47,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:23:47,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:23:47,598 INFO L87 Difference]: Start difference. First operand 2423 states and 3727 transitions. Second operand 3 states. [2020-07-21 12:23:48,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:23:48,012 INFO L93 Difference]: Finished difference Result 5038 states and 7854 transitions. [2020-07-21 12:23:48,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:23:48,013 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 327 [2020-07-21 12:23:48,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:23:48,047 INFO L225 Difference]: With dead ends: 5038 [2020-07-21 12:23:48,047 INFO L226 Difference]: Without dead ends: 4361 [2020-07-21 12:23:48,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:23:48,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4361 states. [2020-07-21 12:23:48,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4361 to 4359. [2020-07-21 12:23:48,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4359 states. [2020-07-21 12:23:48,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4359 states to 4359 states and 6733 transitions. [2020-07-21 12:23:48,275 INFO L78 Accepts]: Start accepts. Automaton has 4359 states and 6733 transitions. Word has length 327 [2020-07-21 12:23:48,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:23:48,277 INFO L479 AbstractCegarLoop]: Abstraction has 4359 states and 6733 transitions. [2020-07-21 12:23:48,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:23:48,277 INFO L276 IsEmpty]: Start isEmpty. Operand 4359 states and 6733 transitions. [2020-07-21 12:23:48,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-21 12:23:48,291 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:23:48,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:23:48,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:23:48,506 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:23:48,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:23:48,507 INFO L82 PathProgramCache]: Analyzing trace with hash -586798209, now seen corresponding path program 1 times [2020-07-21 12:23:48,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:23:48,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960358332] [2020-07-21 12:23:48,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:23:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:23:49,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 2208 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 12:23:49,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:23:49,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:23:49,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:23:49,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960358332] [2020-07-21 12:23:49,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:23:49,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 12:23:49,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513848189] [2020-07-21 12:23:49,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 12:23:49,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:23:49,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 12:23:49,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 12:23:49,310 INFO L87 Difference]: Start difference. First operand 4359 states and 6733 transitions. Second operand 4 states. [2020-07-21 12:23:49,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:23:49,744 INFO L93 Difference]: Finished difference Result 12887 states and 19882 transitions. [2020-07-21 12:23:49,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 12:23:49,745 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 327 [2020-07-21 12:23:49,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:23:49,790 INFO L225 Difference]: With dead ends: 12887 [2020-07-21 12:23:49,790 INFO L226 Difference]: Without dead ends: 8541 [2020-07-21 12:23:49,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 12:23:49,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8541 states. [2020-07-21 12:23:50,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8541 to 8350. [2020-07-21 12:23:50,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8350 states. [2020-07-21 12:23:50,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8350 states to 8350 states and 12854 transitions. [2020-07-21 12:23:50,194 INFO L78 Accepts]: Start accepts. Automaton has 8350 states and 12854 transitions. Word has length 327 [2020-07-21 12:23:50,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:23:50,195 INFO L479 AbstractCegarLoop]: Abstraction has 8350 states and 12854 transitions. [2020-07-21 12:23:50,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 12:23:50,195 INFO L276 IsEmpty]: Start isEmpty. Operand 8350 states and 12854 transitions. [2020-07-21 12:23:50,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-07-21 12:23:50,212 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:23:50,212 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:23:50,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:23:50,426 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:23:50,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:23:50,427 INFO L82 PathProgramCache]: Analyzing trace with hash 2126519767, now seen corresponding path program 1 times [2020-07-21 12:23:50,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:23:50,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902307879] [2020-07-21 12:23:50,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:23:50,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:23:50,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 2213 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 12:23:50,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:23:50,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:23:50,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:23:50,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902307879] [2020-07-21 12:23:50,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:23:50,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:23:50,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298972633] [2020-07-21 12:23:50,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:23:50,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:23:50,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:23:50,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:23:50,856 INFO L87 Difference]: Start difference. First operand 8350 states and 12854 transitions. Second operand 3 states. [2020-07-21 12:23:51,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:23:51,378 INFO L93 Difference]: Finished difference Result 25009 states and 38498 transitions. [2020-07-21 12:23:51,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:23:51,378 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 329 [2020-07-21 12:23:51,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:23:51,483 INFO L225 Difference]: With dead ends: 25009 [2020-07-21 12:23:51,483 INFO L226 Difference]: Without dead ends: 16682 [2020-07-21 12:23:51,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:23:51,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16682 states. [2020-07-21 12:23:52,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16682 to 8361. [2020-07-21 12:23:52,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8361 states. [2020-07-21 12:23:52,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8361 states to 8361 states and 12870 transitions. [2020-07-21 12:23:52,114 INFO L78 Accepts]: Start accepts. Automaton has 8361 states and 12870 transitions. Word has length 329 [2020-07-21 12:23:52,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:23:52,115 INFO L479 AbstractCegarLoop]: Abstraction has 8361 states and 12870 transitions. [2020-07-21 12:23:52,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:23:52,119 INFO L276 IsEmpty]: Start isEmpty. Operand 8361 states and 12870 transitions. [2020-07-21 12:23:52,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-07-21 12:23:52,139 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:23:52,139 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:23:52,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:23:52,354 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:23:52,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:23:52,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1628240060, now seen corresponding path program 1 times [2020-07-21 12:23:52,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:23:52,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212891192] [2020-07-21 12:23:52,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:23:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:23:52,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 2211 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 12:23:52,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:23:52,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:23:52,837 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:23:52,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212891192] [2020-07-21 12:23:52,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:23:52,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:23:52,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831450392] [2020-07-21 12:23:52,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:23:52,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:23:52,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:23:52,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:23:52,840 INFO L87 Difference]: Start difference. First operand 8361 states and 12870 transitions. Second operand 3 states. [2020-07-21 12:23:53,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:23:53,443 INFO L93 Difference]: Finished difference Result 24575 states and 37748 transitions. [2020-07-21 12:23:53,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:23:53,444 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 329 [2020-07-21 12:23:53,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:23:53,489 INFO L225 Difference]: With dead ends: 24575 [2020-07-21 12:23:53,490 INFO L226 Difference]: Without dead ends: 16365 [2020-07-21 12:23:53,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:23:53,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16365 states. [2020-07-21 12:23:54,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16365 to 16182. [2020-07-21 12:23:54,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16182 states. [2020-07-21 12:23:54,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16182 states to 16182 states and 24787 transitions. [2020-07-21 12:23:54,126 INFO L78 Accepts]: Start accepts. Automaton has 16182 states and 24787 transitions. Word has length 329 [2020-07-21 12:23:54,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:23:54,126 INFO L479 AbstractCegarLoop]: Abstraction has 16182 states and 24787 transitions. [2020-07-21 12:23:54,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:23:54,127 INFO L276 IsEmpty]: Start isEmpty. Operand 16182 states and 24787 transitions. [2020-07-21 12:23:54,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-07-21 12:23:54,156 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:23:54,157 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:23:54,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:23:54,372 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:23:54,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:23:54,373 INFO L82 PathProgramCache]: Analyzing trace with hash -640191760, now seen corresponding path program 1 times [2020-07-21 12:23:54,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:23:54,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390159372] [2020-07-21 12:23:54,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:23:54,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:23:54,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 2214 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 12:23:54,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:23:55,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:23:55,436 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:23:55,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390159372] [2020-07-21 12:23:55,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:23:55,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:23:55,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106690604] [2020-07-21 12:23:55,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:23:55,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:23:55,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:23:55,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:23:55,439 INFO L87 Difference]: Start difference. First operand 16182 states and 24787 transitions. Second operand 3 states. [2020-07-21 12:23:56,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:23:56,090 INFO L93 Difference]: Finished difference Result 48451 states and 74207 transitions. [2020-07-21 12:23:56,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:23:56,091 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 330 [2020-07-21 12:23:56,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:23:56,165 INFO L225 Difference]: With dead ends: 48451 [2020-07-21 12:23:56,166 INFO L226 Difference]: Without dead ends: 32319 [2020-07-21 12:23:56,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:23:56,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32319 states. [2020-07-21 12:23:57,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32319 to 16198. [2020-07-21 12:23:57,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16198 states. [2020-07-21 12:23:57,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16198 states to 16198 states and 24806 transitions. [2020-07-21 12:23:57,065 INFO L78 Accepts]: Start accepts. Automaton has 16198 states and 24806 transitions. Word has length 330 [2020-07-21 12:23:57,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:23:57,065 INFO L479 AbstractCegarLoop]: Abstraction has 16198 states and 24806 transitions. [2020-07-21 12:23:57,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:23:57,066 INFO L276 IsEmpty]: Start isEmpty. Operand 16198 states and 24806 transitions. [2020-07-21 12:23:57,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-07-21 12:23:57,094 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:23:57,095 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:23:57,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:23:57,310 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:23:57,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:23:57,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1028005055, now seen corresponding path program 1 times [2020-07-21 12:23:57,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:23:57,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009492201] [2020-07-21 12:23:57,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:23:57,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:23:57,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 2214 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 12:23:57,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:23:57,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:23:57,788 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:23:57,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009492201] [2020-07-21 12:23:57,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:23:57,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:23:57,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022581006] [2020-07-21 12:23:57,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:23:57,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:23:57,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:23:57,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:23:57,791 INFO L87 Difference]: Start difference. First operand 16198 states and 24806 transitions. Second operand 3 states. [2020-07-21 12:23:58,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:23:58,514 INFO L93 Difference]: Finished difference Result 45958 states and 70247 transitions. [2020-07-21 12:23:58,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:23:58,514 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 331 [2020-07-21 12:23:58,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:23:58,574 INFO L225 Difference]: With dead ends: 45958 [2020-07-21 12:23:58,574 INFO L226 Difference]: Without dead ends: 29957 [2020-07-21 12:23:58,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:23:58,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29957 states. [2020-07-21 12:23:59,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29957 to 29782. [2020-07-21 12:23:59,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29782 states. [2020-07-21 12:23:59,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29782 states to 29782 states and 45318 transitions. [2020-07-21 12:23:59,553 INFO L78 Accepts]: Start accepts. Automaton has 29782 states and 45318 transitions. Word has length 331 [2020-07-21 12:23:59,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:23:59,554 INFO L479 AbstractCegarLoop]: Abstraction has 29782 states and 45318 transitions. [2020-07-21 12:23:59,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:23:59,554 INFO L276 IsEmpty]: Start isEmpty. Operand 29782 states and 45318 transitions. [2020-07-21 12:23:59,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-07-21 12:23:59,758 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:23:59,759 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:23:59,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:23:59,973 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:23:59,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:23:59,974 INFO L82 PathProgramCache]: Analyzing trace with hash -875950076, now seen corresponding path program 1 times [2020-07-21 12:23:59,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:23:59,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593476866] [2020-07-21 12:23:59,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:24:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:24:00,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 2215 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 12:24:00,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:24:00,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:24:00,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:24:00,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593476866] [2020-07-21 12:24:00,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:24:00,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 12:24:00,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744723212] [2020-07-21 12:24:00,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 12:24:00,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:24:00,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 12:24:00,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 12:24:00,430 INFO L87 Difference]: Start difference. First operand 29782 states and 45318 transitions. Second operand 4 states. [2020-07-21 12:24:02,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:24:02,756 INFO L93 Difference]: Finished difference Result 86596 states and 131549 transitions. [2020-07-21 12:24:02,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 12:24:02,757 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 331 [2020-07-21 12:24:02,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:24:02,842 INFO L225 Difference]: With dead ends: 86596 [2020-07-21 12:24:02,843 INFO L226 Difference]: Without dead ends: 57320 [2020-07-21 12:24:02,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 12:24:02,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57320 states. [2020-07-21 12:24:04,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57320 to 30031. [2020-07-21 12:24:04,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30031 states. [2020-07-21 12:24:04,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30031 states to 30031 states and 45737 transitions. [2020-07-21 12:24:04,045 INFO L78 Accepts]: Start accepts. Automaton has 30031 states and 45737 transitions. Word has length 331 [2020-07-21 12:24:04,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:24:04,045 INFO L479 AbstractCegarLoop]: Abstraction has 30031 states and 45737 transitions. [2020-07-21 12:24:04,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 12:24:04,046 INFO L276 IsEmpty]: Start isEmpty. Operand 30031 states and 45737 transitions. [2020-07-21 12:24:04,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-21 12:24:04,066 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:24:04,067 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:24:04,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:24:04,268 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:24:04,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:24:04,269 INFO L82 PathProgramCache]: Analyzing trace with hash 98122712, now seen corresponding path program 1 times [2020-07-21 12:24:04,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:24:04,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [742825919] [2020-07-21 12:24:04,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:24:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:24:04,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 2230 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 12:24:04,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:24:04,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:24:04,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:24:04,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [742825919] [2020-07-21 12:24:04,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:24:04,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-21 12:24:04,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620812913] [2020-07-21 12:24:04,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 12:24:04,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:24:04,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 12:24:04,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-21 12:24:04,853 INFO L87 Difference]: Start difference. First operand 30031 states and 45737 transitions. Second operand 8 states. [2020-07-21 12:24:10,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:24:10,421 INFO L93 Difference]: Finished difference Result 98951 states and 152940 transitions. [2020-07-21 12:24:10,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-21 12:24:10,422 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 333 [2020-07-21 12:24:10,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:24:10,520 INFO L225 Difference]: With dead ends: 98951 [2020-07-21 12:24:10,520 INFO L226 Difference]: Without dead ends: 70955 [2020-07-21 12:24:10,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-07-21 12:24:10,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70955 states. [2020-07-21 12:24:12,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70955 to 44723. [2020-07-21 12:24:12,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44723 states. [2020-07-21 12:24:12,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44723 states to 44723 states and 67765 transitions. [2020-07-21 12:24:12,474 INFO L78 Accepts]: Start accepts. Automaton has 44723 states and 67765 transitions. Word has length 333 [2020-07-21 12:24:12,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:24:12,474 INFO L479 AbstractCegarLoop]: Abstraction has 44723 states and 67765 transitions. [2020-07-21 12:24:12,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 12:24:12,474 INFO L276 IsEmpty]: Start isEmpty. Operand 44723 states and 67765 transitions. [2020-07-21 12:24:12,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-21 12:24:12,509 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:24:12,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:24:12,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:24:12,723 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:24:12,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:24:12,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1246728607, now seen corresponding path program 1 times [2020-07-21 12:24:12,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:24:12,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102969580] [2020-07-21 12:24:12,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:24:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:24:13,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 2223 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 12:24:13,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:24:13,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:24:13,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:24:13,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102969580] [2020-07-21 12:24:13,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:24:13,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:24:13,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126883589] [2020-07-21 12:24:13,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:24:13,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:24:13,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:24:13,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:24:13,143 INFO L87 Difference]: Start difference. First operand 44723 states and 67765 transitions. Second operand 3 states. [2020-07-21 12:24:15,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:24:15,492 INFO L93 Difference]: Finished difference Result 105985 states and 161043 transitions. [2020-07-21 12:24:15,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:24:15,493 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 333 [2020-07-21 12:24:15,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:24:15,563 INFO L225 Difference]: With dead ends: 105985 [2020-07-21 12:24:15,564 INFO L226 Difference]: Without dead ends: 63017 [2020-07-21 12:24:15,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:24:15,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63017 states. [2020-07-21 12:24:19,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63017 to 52835. [2020-07-21 12:24:19,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52835 states. [2020-07-21 12:24:19,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52835 states to 52835 states and 80787 transitions. [2020-07-21 12:24:19,158 INFO L78 Accepts]: Start accepts. Automaton has 52835 states and 80787 transitions. Word has length 333 [2020-07-21 12:24:19,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:24:19,159 INFO L479 AbstractCegarLoop]: Abstraction has 52835 states and 80787 transitions. [2020-07-21 12:24:19,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:24:19,159 INFO L276 IsEmpty]: Start isEmpty. Operand 52835 states and 80787 transitions. [2020-07-21 12:24:19,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-21 12:24:19,199 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:24:19,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:24:19,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:24:19,415 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:24:19,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:24:19,416 INFO L82 PathProgramCache]: Analyzing trace with hash 528038592, now seen corresponding path program 1 times [2020-07-21 12:24:19,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:24:19,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085420871] [2020-07-21 12:24:19,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:24:19,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:24:19,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 12:24:19,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:24:19,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:24:19,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:24:19,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085420871] [2020-07-21 12:24:19,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:24:19,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:24:19,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095264987] [2020-07-21 12:24:19,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:24:19,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:24:19,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:24:19,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:24:19,860 INFO L87 Difference]: Start difference. First operand 52835 states and 80787 transitions. Second operand 3 states. [2020-07-21 12:24:23,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:24:23,959 INFO L93 Difference]: Finished difference Result 156993 states and 239712 transitions. [2020-07-21 12:24:23,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:24:23,960 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 333 [2020-07-21 12:24:23,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:24:24,079 INFO L225 Difference]: With dead ends: 156993 [2020-07-21 12:24:24,080 INFO L226 Difference]: Without dead ends: 104921 [2020-07-21 12:24:24,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:24:24,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104921 states. [2020-07-21 12:24:28,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104921 to 52939. [2020-07-21 12:24:28,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52939 states. [2020-07-21 12:24:28,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52939 states to 52939 states and 80923 transitions. [2020-07-21 12:24:28,566 INFO L78 Accepts]: Start accepts. Automaton has 52939 states and 80923 transitions. Word has length 333 [2020-07-21 12:24:28,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:24:28,566 INFO L479 AbstractCegarLoop]: Abstraction has 52939 states and 80923 transitions. [2020-07-21 12:24:28,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:24:28,566 INFO L276 IsEmpty]: Start isEmpty. Operand 52939 states and 80923 transitions. [2020-07-21 12:24:28,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-07-21 12:24:28,593 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:24:28,594 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:24:28,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:24:28,798 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:24:28,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:24:28,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1466989503, now seen corresponding path program 1 times [2020-07-21 12:24:28,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:24:28,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518666452] [2020-07-21 12:24:28,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:24:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:24:29,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 2221 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 12:24:29,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:24:29,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:24:29,228 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:24:29,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518666452] [2020-07-21 12:24:29,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:24:29,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:24:29,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138996205] [2020-07-21 12:24:29,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:24:29,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:24:29,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:24:29,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:24:29,230 INFO L87 Difference]: Start difference. First operand 52939 states and 80923 transitions. Second operand 3 states. [2020-07-21 12:24:33,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:24:33,660 INFO L93 Difference]: Finished difference Result 157126 states and 239877 transitions. [2020-07-21 12:24:33,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:24:33,661 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 334 [2020-07-21 12:24:33,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:24:33,786 INFO L225 Difference]: With dead ends: 157126 [2020-07-21 12:24:33,786 INFO L226 Difference]: Without dead ends: 105041 [2020-07-21 12:24:33,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:24:33,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105041 states. [2020-07-21 12:24:38,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105041 to 53081. [2020-07-21 12:24:38,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53081 states. [2020-07-21 12:24:38,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53081 states to 53081 states and 81094 transitions. [2020-07-21 12:24:38,545 INFO L78 Accepts]: Start accepts. Automaton has 53081 states and 81094 transitions. Word has length 334 [2020-07-21 12:24:38,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:24:38,545 INFO L479 AbstractCegarLoop]: Abstraction has 53081 states and 81094 transitions. [2020-07-21 12:24:38,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:24:38,545 INFO L276 IsEmpty]: Start isEmpty. Operand 53081 states and 81094 transitions. [2020-07-21 12:24:38,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-07-21 12:24:38,573 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:24:38,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:24:38,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:24:38,782 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:24:38,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:24:38,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1049217384, now seen corresponding path program 1 times [2020-07-21 12:24:38,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:24:38,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006208767] [2020-07-21 12:24:38,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:24:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:24:39,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 2226 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 12:24:39,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:24:39,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:24:39,244 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:24:39,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006208767] [2020-07-21 12:24:39,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:24:39,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:24:39,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621032715] [2020-07-21 12:24:39,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:24:39,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:24:39,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:24:39,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:24:39,246 INFO L87 Difference]: Start difference. First operand 53081 states and 81094 transitions. Second operand 3 states. [2020-07-21 12:24:43,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:24:43,168 INFO L93 Difference]: Finished difference Result 139211 states and 214132 transitions. [2020-07-21 12:24:43,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:24:43,169 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 335 [2020-07-21 12:24:43,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:24:43,279 INFO L225 Difference]: With dead ends: 139211 [2020-07-21 12:24:43,279 INFO L226 Difference]: Without dead ends: 88279 [2020-07-21 12:24:43,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:24:43,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88279 states. [2020-07-21 12:24:49,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88279 to 72777. [2020-07-21 12:24:49,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72777 states. [2020-07-21 12:24:49,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72777 states to 72777 states and 112412 transitions. [2020-07-21 12:24:49,383 INFO L78 Accepts]: Start accepts. Automaton has 72777 states and 112412 transitions. Word has length 335 [2020-07-21 12:24:49,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:24:49,383 INFO L479 AbstractCegarLoop]: Abstraction has 72777 states and 112412 transitions. [2020-07-21 12:24:49,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:24:49,384 INFO L276 IsEmpty]: Start isEmpty. Operand 72777 states and 112412 transitions. [2020-07-21 12:24:49,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-07-21 12:24:49,410 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:24:49,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:24:49,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:24:49,612 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:24:49,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:24:49,612 INFO L82 PathProgramCache]: Analyzing trace with hash -94453587, now seen corresponding path program 1 times [2020-07-21 12:24:49,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:24:49,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791872261] [2020-07-21 12:24:49,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:24:49,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:24:49,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 2222 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 12:24:49,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:24:50,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:24:50,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:24:50,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791872261] [2020-07-21 12:24:50,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:24:50,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 12:24:50,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543892160] [2020-07-21 12:24:50,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 12:24:50,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:24:50,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 12:24:50,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 12:24:50,068 INFO L87 Difference]: Start difference. First operand 72777 states and 112412 transitions. Second operand 4 states. [2020-07-21 12:24:53,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:24:53,422 INFO L93 Difference]: Finished difference Result 141287 states and 218067 transitions. [2020-07-21 12:24:53,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 12:24:53,423 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 335 [2020-07-21 12:24:53,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:24:53,510 INFO L225 Difference]: With dead ends: 141287 [2020-07-21 12:24:53,510 INFO L226 Difference]: Without dead ends: 69486 [2020-07-21 12:24:53,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 12:24:53,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69486 states. [2020-07-21 12:24:57,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69486 to 69444. [2020-07-21 12:24:57,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69444 states. [2020-07-21 12:24:57,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69444 states to 69444 states and 107189 transitions. [2020-07-21 12:24:57,195 INFO L78 Accepts]: Start accepts. Automaton has 69444 states and 107189 transitions. Word has length 335 [2020-07-21 12:24:57,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:24:57,195 INFO L479 AbstractCegarLoop]: Abstraction has 69444 states and 107189 transitions. [2020-07-21 12:24:57,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 12:24:57,196 INFO L276 IsEmpty]: Start isEmpty. Operand 69444 states and 107189 transitions. [2020-07-21 12:24:57,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-07-21 12:24:57,222 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:24:57,222 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:24:57,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:24:57,424 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:24:57,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:24:57,425 INFO L82 PathProgramCache]: Analyzing trace with hash -293223062, now seen corresponding path program 1 times [2020-07-21 12:24:57,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:24:57,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314472409] [2020-07-21 12:24:57,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:24:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:24:58,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 2231 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 12:24:58,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:24:58,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:24:58,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:24:58,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314472409] [2020-07-21 12:24:58,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:24:58,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 12:24:58,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671407574] [2020-07-21 12:24:58,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 12:24:58,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:24:58,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 12:24:58,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 12:24:58,290 INFO L87 Difference]: Start difference. First operand 69444 states and 107189 transitions. Second operand 5 states. [2020-07-21 12:25:02,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:25:02,574 INFO L93 Difference]: Finished difference Result 137127 states and 211655 transitions. [2020-07-21 12:25:02,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 12:25:02,574 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 336 [2020-07-21 12:25:02,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:25:02,670 INFO L225 Difference]: With dead ends: 137127 [2020-07-21 12:25:02,670 INFO L226 Difference]: Without dead ends: 69444 [2020-07-21 12:25:02,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-07-21 12:25:02,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69444 states. [2020-07-21 12:25:06,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69444 to 69444. [2020-07-21 12:25:06,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69444 states. [2020-07-21 12:25:06,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69444 states to 69444 states and 106275 transitions. [2020-07-21 12:25:06,698 INFO L78 Accepts]: Start accepts. Automaton has 69444 states and 106275 transitions. Word has length 336 [2020-07-21 12:25:06,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:25:06,698 INFO L479 AbstractCegarLoop]: Abstraction has 69444 states and 106275 transitions. [2020-07-21 12:25:06,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 12:25:06,698 INFO L276 IsEmpty]: Start isEmpty. Operand 69444 states and 106275 transitions. [2020-07-21 12:25:06,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-07-21 12:25:06,724 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:25:06,724 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:25:06,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:25:06,936 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:25:06,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:25:06,937 INFO L82 PathProgramCache]: Analyzing trace with hash -740742865, now seen corresponding path program 1 times [2020-07-21 12:25:06,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:25:06,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996951690] [2020-07-21 12:25:06,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:25:09,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:25:09,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 2232 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 12:25:09,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:25:09,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:25:09,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:25:09,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996951690] [2020-07-21 12:25:09,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:25:09,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 12:25:09,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651770751] [2020-07-21 12:25:09,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 12:25:09,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:25:09,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 12:25:09,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 12:25:09,509 INFO L87 Difference]: Start difference. First operand 69444 states and 106275 transitions. Second operand 4 states. [2020-07-21 12:25:16,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:25:16,390 INFO L93 Difference]: Finished difference Result 205417 states and 314417 transitions. [2020-07-21 12:25:16,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 12:25:16,390 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 336 [2020-07-21 12:25:16,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:25:16,584 INFO L225 Difference]: With dead ends: 205417 [2020-07-21 12:25:16,584 INFO L226 Difference]: Without dead ends: 136308 [2020-07-21 12:25:16,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 12:25:17,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136308 states. [2020-07-21 12:25:25,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136308 to 135933. [2020-07-21 12:25:25,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135933 states. [2020-07-21 12:25:25,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135933 states to 135933 states and 207381 transitions. [2020-07-21 12:25:25,416 INFO L78 Accepts]: Start accepts. Automaton has 135933 states and 207381 transitions. Word has length 336 [2020-07-21 12:25:25,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:25:25,417 INFO L479 AbstractCegarLoop]: Abstraction has 135933 states and 207381 transitions. [2020-07-21 12:25:25,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 12:25:25,417 INFO L276 IsEmpty]: Start isEmpty. Operand 135933 states and 207381 transitions. [2020-07-21 12:25:25,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-07-21 12:25:25,463 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:25:25,464 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:25:25,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:25:25,664 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:25:25,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:25:25,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1957003307, now seen corresponding path program 1 times [2020-07-21 12:25:25,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:25:25,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378712020] [2020-07-21 12:25:25,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:25:26,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:25:26,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 2235 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 12:25:26,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:25:26,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:25:26,109 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:25:26,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378712020] [2020-07-21 12:25:26,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:25:26,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:25:26,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806249329] [2020-07-21 12:25:26,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:25:26,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:25:26,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:25:26,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:25:26,112 INFO L87 Difference]: Start difference. First operand 135933 states and 207381 transitions. Second operand 3 states. [2020-07-21 12:25:42,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:25:42,382 INFO L93 Difference]: Finished difference Result 400146 states and 610311 transitions. [2020-07-21 12:25:42,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:25:42,383 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 338 [2020-07-21 12:25:42,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:25:42,777 INFO L225 Difference]: With dead ends: 400146 [2020-07-21 12:25:42,777 INFO L226 Difference]: Without dead ends: 265601 [2020-07-21 12:25:42,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:25:43,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265601 states. [2020-07-21 12:26:02,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265601 to 265226. [2020-07-21 12:26:02,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265226 states. [2020-07-21 12:26:03,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265226 states to 265226 states and 402919 transitions. [2020-07-21 12:26:03,119 INFO L78 Accepts]: Start accepts. Automaton has 265226 states and 402919 transitions. Word has length 338 [2020-07-21 12:26:03,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:26:03,119 INFO L479 AbstractCegarLoop]: Abstraction has 265226 states and 402919 transitions. [2020-07-21 12:26:03,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:26:03,119 INFO L276 IsEmpty]: Start isEmpty. Operand 265226 states and 402919 transitions. [2020-07-21 12:26:03,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-07-21 12:26:03,224 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:26:03,224 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:26:03,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:26:03,425 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:26:03,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:26:03,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1315327565, now seen corresponding path program 1 times [2020-07-21 12:26:03,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:26:03,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653508339] [2020-07-21 12:26:03,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:26:03,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:26:03,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 2237 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 12:26:03,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:26:03,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:26:03,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:26:03,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653508339] [2020-07-21 12:26:03,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:26:03,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:26:03,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196127865] [2020-07-21 12:26:03,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:26:03,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:26:03,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:26:03,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:26:03,836 INFO L87 Difference]: Start difference. First operand 265226 states and 402919 transitions. Second operand 3 states. [2020-07-21 12:26:30,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:26:30,895 INFO L93 Difference]: Finished difference Result 594198 states and 900009 transitions. [2020-07-21 12:26:30,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:26:30,895 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 339 [2020-07-21 12:26:30,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:26:31,987 INFO L225 Difference]: With dead ends: 594198 [2020-07-21 12:26:31,988 INFO L226 Difference]: Without dead ends: 406908 [2020-07-21 12:26:32,150 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 [2020-07-21 12:26:32,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406908 states. [2020-07-21 12:26:54,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406908 to 264969. [2020-07-21 12:26:54,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264969 states. [2020-07-21 12:26:55,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264969 states to 264969 states and 402483 transitions. [2020-07-21 12:26:55,338 INFO L78 Accepts]: Start accepts. Automaton has 264969 states and 402483 transitions. Word has length 339 [2020-07-21 12:26:55,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:26:55,339 INFO L479 AbstractCegarLoop]: Abstraction has 264969 states and 402483 transitions. [2020-07-21 12:26:55,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:26:55,339 INFO L276 IsEmpty]: Start isEmpty. Operand 264969 states and 402483 transitions. [2020-07-21 12:26:55,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-07-21 12:26:55,462 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:26:55,462 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:26:55,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:26:55,663 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:26:55,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:26:55,664 INFO L82 PathProgramCache]: Analyzing trace with hash 699448139, now seen corresponding path program 1 times [2020-07-21 12:26:55,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:26:55,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682090343] [2020-07-21 12:26:55,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:26:56,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:26:56,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 2236 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 12:26:56,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:26:56,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:26:56,245 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:26:56,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682090343] [2020-07-21 12:26:56,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:26:56,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-21 12:26:56,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586090282] [2020-07-21 12:26:56,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 12:26:56,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:26:56,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 12:26:56,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-21 12:26:56,247 INFO L87 Difference]: Start difference. First operand 264969 states and 402483 transitions. Second operand 8 states. [2020-07-21 12:27:42,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:27:42,604 INFO L93 Difference]: Finished difference Result 726059 states and 1111089 transitions. [2020-07-21 12:27:42,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-21 12:27:42,604 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 339 [2020-07-21 12:27:42,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:27:43,513 INFO L225 Difference]: With dead ends: 726059 [2020-07-21 12:27:43,513 INFO L226 Difference]: Without dead ends: 608648 [2020-07-21 12:27:44,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-07-21 12:27:44,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608648 states. [2020-07-21 12:28:14,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608648 to 335545. [2020-07-21 12:28:14,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335545 states. [2020-07-21 12:28:15,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335545 states to 335545 states and 509727 transitions. [2020-07-21 12:28:15,039 INFO L78 Accepts]: Start accepts. Automaton has 335545 states and 509727 transitions. Word has length 339 [2020-07-21 12:28:15,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:28:15,039 INFO L479 AbstractCegarLoop]: Abstraction has 335545 states and 509727 transitions. [2020-07-21 12:28:15,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 12:28:15,039 INFO L276 IsEmpty]: Start isEmpty. Operand 335545 states and 509727 transitions. [2020-07-21 12:28:15,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-07-21 12:28:15,156 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:28:15,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:28:15,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:28:15,357 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:28:15,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:28:15,358 INFO L82 PathProgramCache]: Analyzing trace with hash -461676378, now seen corresponding path program 1 times [2020-07-21 12:28:15,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:28:15,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874068147] [2020-07-21 12:28:15,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:28:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:28:15,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 2233 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 12:28:15,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:28:15,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:28:15,813 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:28:15,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874068147] [2020-07-21 12:28:15,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:28:15,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:28:15,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763057607] [2020-07-21 12:28:15,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:28:15,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:28:15,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:28:15,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:28:15,818 INFO L87 Difference]: Start difference. First operand 335545 states and 509727 transitions. Second operand 3 states. [2020-07-21 12:29:10,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:29:10,433 INFO L93 Difference]: Finished difference Result 993822 states and 1507527 transitions. [2020-07-21 12:29:10,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:29:10,434 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 339 [2020-07-21 12:29:10,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:29:11,524 INFO L225 Difference]: With dead ends: 993822 [2020-07-21 12:29:11,524 INFO L226 Difference]: Without dead ends: 658885 [2020-07-21 12:29:11,881 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 [2020-07-21 12:29:12,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658885 states. [2020-07-21 12:30:14,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658885 to 658390. [2020-07-21 12:30:14,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658390 states. [2020-07-21 12:30:16,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658390 states to 658390 states and 993611 transitions. [2020-07-21 12:30:16,444 INFO L78 Accepts]: Start accepts. Automaton has 658390 states and 993611 transitions. Word has length 339 [2020-07-21 12:30:16,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:30:16,445 INFO L479 AbstractCegarLoop]: Abstraction has 658390 states and 993611 transitions. [2020-07-21 12:30:16,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:30:16,445 INFO L276 IsEmpty]: Start isEmpty. Operand 658390 states and 993611 transitions. [2020-07-21 12:30:16,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-07-21 12:30:16,705 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:30:16,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:30:16,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:30:16,906 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:30:16,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:30:16,907 INFO L82 PathProgramCache]: Analyzing trace with hash -165106685, now seen corresponding path program 1 times [2020-07-21 12:30:16,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:30:16,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066983176] [2020-07-21 12:30:16,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:30:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:30:17,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 2234 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 12:30:17,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:30:17,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:30:17,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:30:17,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066983176] [2020-07-21 12:30:17,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:30:17,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:30:17,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777223849] [2020-07-21 12:30:17,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:30:17,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:30:17,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:30:17,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:30:17,342 INFO L87 Difference]: Start difference. First operand 658390 states and 993611 transitions. Second operand 3 states. [2020-07-21 12:31:40,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:31:40,641 INFO L93 Difference]: Finished difference Result 1631318 states and 2481514 transitions. [2020-07-21 12:31:40,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:31:40,642 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 339 [2020-07-21 12:31:40,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:31:42,413 INFO L225 Difference]: With dead ends: 1631318 [2020-07-21 12:31:42,413 INFO L226 Difference]: Without dead ends: 986931 [2020-07-21 12:31:42,908 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 [2020-07-21 12:31:43,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986931 states. [2020-07-21 12:33:24,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986931 to 927238. [2020-07-21 12:33:24,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927238 states. [2020-07-21 12:33:43,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927238 states to 927238 states and 1410279 transitions. [2020-07-21 12:33:43,014 INFO L78 Accepts]: Start accepts. Automaton has 927238 states and 1410279 transitions. Word has length 339 [2020-07-21 12:33:43,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:33:43,014 INFO L479 AbstractCegarLoop]: Abstraction has 927238 states and 1410279 transitions. [2020-07-21 12:33:43,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:33:43,014 INFO L276 IsEmpty]: Start isEmpty. Operand 927238 states and 1410279 transitions. [2020-07-21 12:33:43,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-07-21 12:33:43,270 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:33:43,271 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:33:43,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:33:43,472 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:33:43,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:33:43,473 INFO L82 PathProgramCache]: Analyzing trace with hash 145534733, now seen corresponding path program 1 times [2020-07-21 12:33:43,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:33:43,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683770] [2020-07-21 12:33:43,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:33:43,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:33:43,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 2239 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 12:33:43,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:33:43,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:33:43,907 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:33:43,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683770] [2020-07-21 12:33:43,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:33:43,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 12:33:43,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216919459] [2020-07-21 12:33:43,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 12:33:43,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:33:43,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 12:33:43,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 12:33:43,908 INFO L87 Difference]: Start difference. First operand 927238 states and 1410279 transitions. Second operand 4 states.