java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 07:40:27,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 07:40:27,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 07:40:27,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 07:40:27,603 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 07:40:27,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 07:40:27,605 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 07:40:27,607 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 07:40:27,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 07:40:27,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 07:40:27,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 07:40:27,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 07:40:27,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 07:40:27,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 07:40:27,614 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 07:40:27,615 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 07:40:27,616 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 07:40:27,617 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 07:40:27,618 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 07:40:27,620 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 07:40:27,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 07:40:27,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 07:40:27,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 07:40:27,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 07:40:27,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 07:40:27,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 07:40:27,631 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 07:40:27,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 07:40:27,633 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 07:40:27,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 07:40:27,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 07:40:27,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 07:40:27,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 07:40:27,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 07:40:27,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 07:40:27,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 07:40:27,638 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 [2019-09-08 07:40:27,653 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 07:40:27,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 07:40:27,660 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 07:40:27,660 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 07:40:27,660 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 07:40:27,661 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 07:40:27,661 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 07:40:27,661 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 07:40:27,661 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 07:40:27,661 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 07:40:27,662 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 07:40:27,662 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 07:40:27,662 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 07:40:27,662 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 07:40:27,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 07:40:27,662 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 07:40:27,663 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 07:40:27,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 07:40:27,663 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 07:40:27,663 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 07:40:27,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 07:40:27,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 07:40:27,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 07:40:27,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 07:40:27,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 07:40:27,665 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 07:40:27,665 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 07:40:27,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 07:40:27,666 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 07:40:27,716 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 07:40:27,729 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 07:40:27,733 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 07:40:27,734 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 07:40:27,735 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 07:40:27,735 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c [2019-09-08 07:40:27,798 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e1729389/cdda095aeec54ae499d27cf8b19692d0/FLAG6dcb58838 [2019-09-08 07:40:28,302 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 07:40:28,304 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c [2019-09-08 07:40:28,323 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e1729389/cdda095aeec54ae499d27cf8b19692d0/FLAG6dcb58838 [2019-09-08 07:40:28,598 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e1729389/cdda095aeec54ae499d27cf8b19692d0 [2019-09-08 07:40:28,611 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 07:40:28,612 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 07:40:28,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 07:40:28,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 07:40:28,617 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 07:40:28,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 07:40:28" (1/1) ... [2019-09-08 07:40:28,621 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f9ee666 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:40:28, skipping insertion in model container [2019-09-08 07:40:28,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 07:40:28" (1/1) ... [2019-09-08 07:40:28,630 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 07:40:28,688 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 07:40:29,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 07:40:29,080 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 07:40:29,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 07:40:29,162 INFO L192 MainTranslator]: Completed translation [2019-09-08 07:40:29,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:40:29 WrapperNode [2019-09-08 07:40:29,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 07:40:29,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 07:40:29,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 07:40:29,163 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 07:40:29,178 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:40:29" (1/1) ... [2019-09-08 07:40:29,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:40:29" (1/1) ... [2019-09-08 07:40:29,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:40:29" (1/1) ... [2019-09-08 07:40:29,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:40:29" (1/1) ... [2019-09-08 07:40:29,229 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:40:29" (1/1) ... [2019-09-08 07:40:29,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:40:29" (1/1) ... [2019-09-08 07:40:29,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:40:29" (1/1) ... [2019-09-08 07:40:29,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 07:40:29,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 07:40:29,255 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 07:40:29,255 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 07:40:29,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:40:29" (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 [2019-09-08 07:40:29,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 07:40:29,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 07:40:29,304 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2019-09-08 07:40:29,304 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2019-09-08 07:40:29,304 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2019-09-08 07:40:29,305 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2019-09-08 07:40:29,305 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2019-09-08 07:40:29,305 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2019-09-08 07:40:29,305 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2019-09-08 07:40:29,305 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 07:40:29,306 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2019-09-08 07:40:29,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 07:40:29,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-08 07:40:29,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-08 07:40:29,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-09-08 07:40:29,307 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-09-08 07:40:29,310 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-08 07:40:29,310 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-09-08 07:40:29,310 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-09-08 07:40:29,310 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-09-08 07:40:29,311 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-09-08 07:40:29,311 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-09-08 07:40:29,311 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2019-09-08 07:40:29,311 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2019-09-08 07:40:29,311 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-09-08 07:40:29,311 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-09-08 07:40:29,312 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 07:40:29,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 07:40:29,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 07:40:30,154 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 07:40:30,154 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-08 07:40:30,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 07:40:30 BoogieIcfgContainer [2019-09-08 07:40:30,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 07:40:30,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 07:40:30,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 07:40:30,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 07:40:30,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 07:40:28" (1/3) ... [2019-09-08 07:40:30,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@412e63f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 07:40:30, skipping insertion in model container [2019-09-08 07:40:30,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:40:29" (2/3) ... [2019-09-08 07:40:30,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@412e63f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 07:40:30, skipping insertion in model container [2019-09-08 07:40:30,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 07:40:30" (3/3) ... [2019-09-08 07:40:30,163 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c [2019-09-08 07:40:30,172 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 07:40:30,179 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 07:40:30,196 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 07:40:30,229 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 07:40:30,230 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 07:40:30,230 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 07:40:30,230 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 07:40:30,231 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 07:40:30,231 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 07:40:30,231 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 07:40:30,231 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 07:40:30,231 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 07:40:30,254 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states. [2019-09-08 07:40:30,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-09-08 07:40:30,267 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:40:30,268 INFO L399 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] [2019-09-08 07:40:30,270 INFO L418 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:40:30,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:40:30,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1245616469, now seen corresponding path program 1 times [2019-09-08 07:40:30,276 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:40:30,277 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:40:30,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:40:30,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:40:30,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:40:30,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:40:30,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:40:30,715 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:40:30,716 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 07:40:30,723 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 07:40:30,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 07:40:30,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 07:40:30,742 INFO L87 Difference]: Start difference. First operand 154 states. Second operand 5 states. [2019-09-08 07:40:30,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:40:30,895 INFO L93 Difference]: Finished difference Result 263 states and 399 transitions. [2019-09-08 07:40:30,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 07:40:30,902 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2019-09-08 07:40:30,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:40:30,919 INFO L225 Difference]: With dead ends: 263 [2019-09-08 07:40:30,919 INFO L226 Difference]: Without dead ends: 149 [2019-09-08 07:40:30,927 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-08 07:40:30,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2019-09-08 07:40:30,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2019-09-08 07:40:30,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2019-09-08 07:40:30,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 198 transitions. [2019-09-08 07:40:30,991 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 198 transitions. Word has length 62 [2019-09-08 07:40:30,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:40:30,991 INFO L475 AbstractCegarLoop]: Abstraction has 149 states and 198 transitions. [2019-09-08 07:40:30,991 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 07:40:30,992 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 198 transitions. [2019-09-08 07:40:30,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-09-08 07:40:30,996 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:40:30,996 INFO L399 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] [2019-09-08 07:40:30,996 INFO L418 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:40:30,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:40:30,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1850604190, now seen corresponding path program 1 times [2019-09-08 07:40:30,997 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:40:30,997 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:40:31,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:40:31,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:40:31,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:40:31,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:40:31,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:40:31,453 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:40:31,454 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-09-08 07:40:31,457 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-08 07:40:31,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-08 07:40:31,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-09-08 07:40:31,459 INFO L87 Difference]: Start difference. First operand 149 states and 198 transitions. Second operand 13 states. [2019-09-08 07:40:37,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:40:37,344 INFO L93 Difference]: Finished difference Result 1428 states and 2159 transitions. [2019-09-08 07:40:37,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2019-09-08 07:40:37,345 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 93 [2019-09-08 07:40:37,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:40:37,362 INFO L225 Difference]: With dead ends: 1428 [2019-09-08 07:40:37,363 INFO L226 Difference]: Without dead ends: 1323 [2019-09-08 07:40:37,367 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=618, Invalid=2034, Unknown=0, NotChecked=0, Total=2652 [2019-09-08 07:40:37,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2019-09-08 07:40:37,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 1108. [2019-09-08 07:40:37,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1108 states. [2019-09-08 07:40:37,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 1637 transitions. [2019-09-08 07:40:37,542 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 1637 transitions. Word has length 93 [2019-09-08 07:40:37,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:40:37,545 INFO L475 AbstractCegarLoop]: Abstraction has 1108 states and 1637 transitions. [2019-09-08 07:40:37,545 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-08 07:40:37,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 1637 transitions. [2019-09-08 07:40:37,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-09-08 07:40:37,560 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:40:37,561 INFO L399 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] [2019-09-08 07:40:37,561 INFO L418 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:40:37,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:40:37,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1299803518, now seen corresponding path program 1 times [2019-09-08 07:40:37,562 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:40:37,562 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:40:37,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:40:37,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:40:37,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:40:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:40:37,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:40:37,827 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:40:37,827 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-09-08 07:40:37,828 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-08 07:40:37,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-08 07:40:37,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-09-08 07:40:37,829 INFO L87 Difference]: Start difference. First operand 1108 states and 1637 transitions. Second operand 11 states. [2019-09-08 07:40:37,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:40:37,990 INFO L93 Difference]: Finished difference Result 1264 states and 1896 transitions. [2019-09-08 07:40:37,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-08 07:40:37,991 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 94 [2019-09-08 07:40:37,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:40:38,014 INFO L225 Difference]: With dead ends: 1264 [2019-09-08 07:40:38,015 INFO L226 Difference]: Without dead ends: 1262 [2019-09-08 07:40:38,017 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-09-08 07:40:38,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2019-09-08 07:40:38,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 1180. [2019-09-08 07:40:38,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1180 states. [2019-09-08 07:40:38,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1709 transitions. [2019-09-08 07:40:38,134 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1709 transitions. Word has length 94 [2019-09-08 07:40:38,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:40:38,137 INFO L475 AbstractCegarLoop]: Abstraction has 1180 states and 1709 transitions. [2019-09-08 07:40:38,137 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-08 07:40:38,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1709 transitions. [2019-09-08 07:40:38,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-09-08 07:40:38,143 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:40:38,144 INFO L399 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] [2019-09-08 07:40:38,144 INFO L418 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:40:38,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:40:38,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1310130058, now seen corresponding path program 1 times [2019-09-08 07:40:38,145 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:40:38,145 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:40:38,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:40:38,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:40:38,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:40:38,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:40:38,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:40:38,382 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:40:38,382 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 07:40:38,384 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 07:40:38,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 07:40:38,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 07:40:38,385 INFO L87 Difference]: Start difference. First operand 1180 states and 1709 transitions. Second operand 5 states. [2019-09-08 07:40:39,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:40:39,271 INFO L93 Difference]: Finished difference Result 4285 states and 6328 transitions. [2019-09-08 07:40:39,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 07:40:39,272 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2019-09-08 07:40:39,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:40:39,290 INFO L225 Difference]: With dead ends: 4285 [2019-09-08 07:40:39,291 INFO L226 Difference]: Without dead ends: 3149 [2019-09-08 07:40:39,297 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-09-08 07:40:39,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3149 states. [2019-09-08 07:40:39,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3149 to 3106. [2019-09-08 07:40:39,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3106 states. [2019-09-08 07:40:39,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3106 states to 3106 states and 4549 transitions. [2019-09-08 07:40:39,463 INFO L78 Accepts]: Start accepts. Automaton has 3106 states and 4549 transitions. Word has length 95 [2019-09-08 07:40:39,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:40:39,463 INFO L475 AbstractCegarLoop]: Abstraction has 3106 states and 4549 transitions. [2019-09-08 07:40:39,463 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 07:40:39,463 INFO L276 IsEmpty]: Start isEmpty. Operand 3106 states and 4549 transitions. [2019-09-08 07:40:39,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-09-08 07:40:39,468 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:40:39,468 INFO L399 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] [2019-09-08 07:40:39,468 INFO L418 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:40:39,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:40:39,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1927996876, now seen corresponding path program 1 times [2019-09-08 07:40:39,469 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:40:39,469 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:40:39,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:40:39,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:40:39,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:40:39,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:40:39,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:40:39,579 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:40:39,579 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 07:40:39,580 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 07:40:39,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 07:40:39,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 07:40:39,581 INFO L87 Difference]: Start difference. First operand 3106 states and 4549 transitions. Second operand 5 states. [2019-09-08 07:40:40,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:40:40,407 INFO L93 Difference]: Finished difference Result 6355 states and 9314 transitions. [2019-09-08 07:40:40,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 07:40:40,408 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2019-09-08 07:40:40,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:40:40,437 INFO L225 Difference]: With dead ends: 6355 [2019-09-08 07:40:40,437 INFO L226 Difference]: Without dead ends: 4202 [2019-09-08 07:40:40,445 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-08 07:40:40,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4202 states. [2019-09-08 07:40:40,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4202 to 4200. [2019-09-08 07:40:40,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4200 states. [2019-09-08 07:40:40,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4200 states to 4200 states and 6087 transitions. [2019-09-08 07:40:40,674 INFO L78 Accepts]: Start accepts. Automaton has 4200 states and 6087 transitions. Word has length 96 [2019-09-08 07:40:40,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:40:40,675 INFO L475 AbstractCegarLoop]: Abstraction has 4200 states and 6087 transitions. [2019-09-08 07:40:40,675 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 07:40:40,675 INFO L276 IsEmpty]: Start isEmpty. Operand 4200 states and 6087 transitions. [2019-09-08 07:40:40,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-09-08 07:40:40,677 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:40:40,678 INFO L399 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] [2019-09-08 07:40:40,678 INFO L418 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:40:40,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:40:40,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1775175999, now seen corresponding path program 1 times [2019-09-08 07:40:40,679 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:40:40,679 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:40:40,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:40:40,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:40:40,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:40:40,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:40:40,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:40:40,841 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:40:40,841 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-08 07:40:40,842 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 07:40:40,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 07:40:40,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-08 07:40:40,843 INFO L87 Difference]: Start difference. First operand 4200 states and 6087 transitions. Second operand 9 states. [2019-09-08 07:40:42,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:40:42,029 INFO L93 Difference]: Finished difference Result 10704 states and 15613 transitions. [2019-09-08 07:40:42,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 07:40:42,030 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2019-09-08 07:40:42,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:40:42,073 INFO L225 Difference]: With dead ends: 10704 [2019-09-08 07:40:42,073 INFO L226 Difference]: Without dead ends: 6552 [2019-09-08 07:40:42,088 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2019-09-08 07:40:42,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6552 states. [2019-09-08 07:40:42,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6552 to 4224. [2019-09-08 07:40:42,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4224 states. [2019-09-08 07:40:42,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4224 states to 4224 states and 6120 transitions. [2019-09-08 07:40:42,443 INFO L78 Accepts]: Start accepts. Automaton has 4224 states and 6120 transitions. Word has length 96 [2019-09-08 07:40:42,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:40:42,444 INFO L475 AbstractCegarLoop]: Abstraction has 4224 states and 6120 transitions. [2019-09-08 07:40:42,444 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 07:40:42,444 INFO L276 IsEmpty]: Start isEmpty. Operand 4224 states and 6120 transitions. [2019-09-08 07:40:42,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-09-08 07:40:42,453 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:40:42,454 INFO L399 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] [2019-09-08 07:40:42,454 INFO L418 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:40:42,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:40:42,455 INFO L82 PathProgramCache]: Analyzing trace with hash -922068117, now seen corresponding path program 1 times [2019-09-08 07:40:42,455 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:40:42,455 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:40:42,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:40:42,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:40:42,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:40:42,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:40:42,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:40:42,579 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:40:42,579 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-08 07:40:42,579 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 07:40:42,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 07:40:42,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-08 07:40:42,581 INFO L87 Difference]: Start difference. First operand 4224 states and 6120 transitions. Second operand 9 states. [2019-09-08 07:40:43,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:40:43,744 INFO L93 Difference]: Finished difference Result 10048 states and 14585 transitions. [2019-09-08 07:40:43,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 07:40:43,745 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2019-09-08 07:40:43,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:40:43,780 INFO L225 Difference]: With dead ends: 10048 [2019-09-08 07:40:43,780 INFO L226 Difference]: Without dead ends: 5887 [2019-09-08 07:40:43,795 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2019-09-08 07:40:43,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5887 states. [2019-09-08 07:40:44,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5887 to 4241. [2019-09-08 07:40:44,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4241 states. [2019-09-08 07:40:44,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4241 states to 4241 states and 6144 transitions. [2019-09-08 07:40:44,137 INFO L78 Accepts]: Start accepts. Automaton has 4241 states and 6144 transitions. Word has length 96 [2019-09-08 07:40:44,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:40:44,138 INFO L475 AbstractCegarLoop]: Abstraction has 4241 states and 6144 transitions. [2019-09-08 07:40:44,138 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 07:40:44,138 INFO L276 IsEmpty]: Start isEmpty. Operand 4241 states and 6144 transitions. [2019-09-08 07:40:44,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-09-08 07:40:44,140 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:40:44,140 INFO L399 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] [2019-09-08 07:40:44,140 INFO L418 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:40:44,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:40:44,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1378419157, now seen corresponding path program 1 times [2019-09-08 07:40:44,141 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:40:44,141 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:40:44,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:40:44,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:40:44,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:40:44,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:40:44,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:40:44,298 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:40:44,298 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-08 07:40:44,299 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 07:40:44,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 07:40:44,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-08 07:40:44,300 INFO L87 Difference]: Start difference. First operand 4241 states and 6144 transitions. Second operand 9 states. [2019-09-08 07:40:45,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:40:45,355 INFO L93 Difference]: Finished difference Result 9366 states and 13535 transitions. [2019-09-08 07:40:45,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 07:40:45,356 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2019-09-08 07:40:45,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:40:45,400 INFO L225 Difference]: With dead ends: 9366 [2019-09-08 07:40:45,401 INFO L226 Difference]: Without dead ends: 5205 [2019-09-08 07:40:45,414 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2019-09-08 07:40:45,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5205 states. [2019-09-08 07:40:45,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5205 to 4258. [2019-09-08 07:40:45,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4258 states. [2019-09-08 07:40:45,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4258 states to 4258 states and 6168 transitions. [2019-09-08 07:40:45,783 INFO L78 Accepts]: Start accepts. Automaton has 4258 states and 6168 transitions. Word has length 96 [2019-09-08 07:40:45,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:40:45,783 INFO L475 AbstractCegarLoop]: Abstraction has 4258 states and 6168 transitions. [2019-09-08 07:40:45,784 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 07:40:45,784 INFO L276 IsEmpty]: Start isEmpty. Operand 4258 states and 6168 transitions. [2019-09-08 07:40:45,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-09-08 07:40:45,786 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:40:45,786 INFO L399 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] [2019-09-08 07:40:45,787 INFO L418 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:40:45,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:40:45,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1891830763, now seen corresponding path program 1 times [2019-09-08 07:40:45,788 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:40:45,789 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:40:45,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:40:45,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:40:45,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:40:45,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:40:45,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:40:45,979 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:40:45,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-08 07:40:45,980 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 07:40:45,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 07:40:45,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-08 07:40:45,981 INFO L87 Difference]: Start difference. First operand 4258 states and 6168 transitions. Second operand 9 states. [2019-09-08 07:40:46,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:40:46,929 INFO L93 Difference]: Finished difference Result 8672 states and 12477 transitions. [2019-09-08 07:40:46,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 07:40:46,930 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2019-09-08 07:40:46,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:40:46,950 INFO L225 Difference]: With dead ends: 8672 [2019-09-08 07:40:46,950 INFO L226 Difference]: Without dead ends: 4511 [2019-09-08 07:40:46,963 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2019-09-08 07:40:46,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4511 states. [2019-09-08 07:40:47,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4511 to 4275. [2019-09-08 07:40:47,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4275 states. [2019-09-08 07:40:47,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4275 states to 4275 states and 6192 transitions. [2019-09-08 07:40:47,300 INFO L78 Accepts]: Start accepts. Automaton has 4275 states and 6192 transitions. Word has length 96 [2019-09-08 07:40:47,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:40:47,301 INFO L475 AbstractCegarLoop]: Abstraction has 4275 states and 6192 transitions. [2019-09-08 07:40:47,301 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 07:40:47,301 INFO L276 IsEmpty]: Start isEmpty. Operand 4275 states and 6192 transitions. [2019-09-08 07:40:47,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-09-08 07:40:47,307 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:40:47,307 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:40:47,307 INFO L418 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:40:47,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:40:47,308 INFO L82 PathProgramCache]: Analyzing trace with hash 140940638, now seen corresponding path program 1 times [2019-09-08 07:40:47,308 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:40:47,308 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:40:47,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:40:47,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:40:47,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:40:47,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:40:47,442 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-09-08 07:40:47,443 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:40:47,443 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:40:47,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:40:47,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:40:47,635 INFO L256 TraceCheckSpWp]: Trace formula consists of 1021 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-08 07:40:47,664 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:40:47,782 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Stream closed [2019-09-08 07:40:47,789 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:40:47,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2019-09-08 07:40:47,793 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 07:40:47,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 07:40:47,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-08 07:40:47,794 INFO L87 Difference]: Start difference. First operand 4275 states and 6192 transitions. Second operand 8 states. [2019-09-08 07:40:49,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:40:49,029 INFO L93 Difference]: Finished difference Result 12426 states and 18061 transitions. [2019-09-08 07:40:49,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-08 07:40:49,032 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 147 [2019-09-08 07:40:49,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:40:49,070 INFO L225 Difference]: With dead ends: 12426 [2019-09-08 07:40:49,070 INFO L226 Difference]: Without dead ends: 8218 [2019-09-08 07:40:49,088 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-09-08 07:40:49,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8218 states. [2019-09-08 07:40:49,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8218 to 7940. [2019-09-08 07:40:49,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7940 states. [2019-09-08 07:40:49,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7940 states to 7940 states and 11397 transitions. [2019-09-08 07:40:49,621 INFO L78 Accepts]: Start accepts. Automaton has 7940 states and 11397 transitions. Word has length 147 [2019-09-08 07:40:49,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:40:49,622 INFO L475 AbstractCegarLoop]: Abstraction has 7940 states and 11397 transitions. [2019-09-08 07:40:49,622 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 07:40:49,622 INFO L276 IsEmpty]: Start isEmpty. Operand 7940 states and 11397 transitions. [2019-09-08 07:40:49,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-09-08 07:40:49,627 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:40:49,628 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:40:49,628 INFO L418 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:40:49,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:40:49,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1505128413, now seen corresponding path program 1 times [2019-09-08 07:40:49,629 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:40:49,629 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:40:49,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:40:49,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:40:49,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:40:49,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:40:49,780 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-09-08 07:40:49,781 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:40:49,781 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 07:40:49,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:40:49,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:40:49,967 INFO L256 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-08 07:40:49,987 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:40:50,080 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (3)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 07:40:50,096 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:40:50,096 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2019-09-08 07:40:50,097 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 07:40:50,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 07:40:50,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-08 07:40:50,098 INFO L87 Difference]: Start difference. First operand 7940 states and 11397 transitions. Second operand 8 states. [2019-09-08 07:40:51,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:40:51,633 INFO L93 Difference]: Finished difference Result 23183 states and 33371 transitions. [2019-09-08 07:40:51,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-08 07:40:51,634 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 148 [2019-09-08 07:40:51,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:40:51,728 INFO L225 Difference]: With dead ends: 23183 [2019-09-08 07:40:51,729 INFO L226 Difference]: Without dead ends: 15322 [2019-09-08 07:40:51,755 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-09-08 07:40:51,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15322 states. [2019-09-08 07:40:53,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15322 to 14771. [2019-09-08 07:40:53,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14771 states. [2019-09-08 07:40:53,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14771 states to 14771 states and 20975 transitions. [2019-09-08 07:40:53,222 INFO L78 Accepts]: Start accepts. Automaton has 14771 states and 20975 transitions. Word has length 148 [2019-09-08 07:40:53,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:40:53,223 INFO L475 AbstractCegarLoop]: Abstraction has 14771 states and 20975 transitions. [2019-09-08 07:40:53,223 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 07:40:53,223 INFO L276 IsEmpty]: Start isEmpty. Operand 14771 states and 20975 transitions. [2019-09-08 07:40:53,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-09-08 07:40:53,234 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:40:53,234 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:40:53,235 INFO L418 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:40:53,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:40:53,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1208108126, now seen corresponding path program 1 times [2019-09-08 07:40:53,236 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:40:53,236 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:40:53,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:40:53,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:40:53,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:40:53,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:40:53,373 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-09-08 07:40:53,373 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:40:53,373 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 07:40:53,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:40:53,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:40:53,541 INFO L256 TraceCheckSpWp]: Trace formula consists of 1019 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-08 07:40:53,550 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:40:53,610 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-09-08 07:40:53,623 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:40:53,623 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2019-09-08 07:40:53,624 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 07:40:53,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 07:40:53,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-08 07:40:53,625 INFO L87 Difference]: Start difference. First operand 14771 states and 20975 transitions. Second operand 8 states. [2019-09-08 07:40:55,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:40:55,452 INFO L93 Difference]: Finished difference Result 43183 states and 61487 transitions. [2019-09-08 07:40:55,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-08 07:40:55,453 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 149 [2019-09-08 07:40:55,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:40:55,749 INFO L225 Difference]: With dead ends: 43183 [2019-09-08 07:40:55,750 INFO L226 Difference]: Without dead ends: 28503 [2019-09-08 07:40:55,803 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-09-08 07:40:55,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28503 states. [2019-09-08 07:40:57,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28503 to 27406. [2019-09-08 07:40:57,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27406 states. [2019-09-08 07:40:57,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27406 states to 27406 states and 38443 transitions. [2019-09-08 07:40:57,637 INFO L78 Accepts]: Start accepts. Automaton has 27406 states and 38443 transitions. Word has length 149 [2019-09-08 07:40:57,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:40:57,638 INFO L475 AbstractCegarLoop]: Abstraction has 27406 states and 38443 transitions. [2019-09-08 07:40:57,638 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 07:40:57,638 INFO L276 IsEmpty]: Start isEmpty. Operand 27406 states and 38443 transitions. [2019-09-08 07:40:57,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-09-08 07:40:57,649 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:40:57,650 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:40:57,650 INFO L418 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:40:57,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:40:57,651 INFO L82 PathProgramCache]: Analyzing trace with hash 301245131, now seen corresponding path program 1 times [2019-09-08 07:40:57,651 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:40:57,651 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:40:57,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:40:57,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:40:57,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:40:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:40:57,760 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-09-08 07:40:57,760 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:40:57,760 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:40:57,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:40:57,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:40:57,915 INFO L256 TraceCheckSpWp]: Trace formula consists of 1018 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-08 07:40:57,920 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:40:57,984 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-09-08 07:40:58,002 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:40:58,002 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2019-09-08 07:40:58,003 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 07:40:58,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 07:40:58,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-08 07:40:58,004 INFO L87 Difference]: Start difference. First operand 27406 states and 38443 transitions. Second operand 8 states. [2019-09-08 07:41:02,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:41:02,550 INFO L93 Difference]: Finished difference Result 80061 states and 112633 transitions. [2019-09-08 07:41:02,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-08 07:41:02,551 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 150 [2019-09-08 07:41:02,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:41:02,788 INFO L225 Difference]: With dead ends: 80061 [2019-09-08 07:41:02,788 INFO L226 Difference]: Without dead ends: 52760 [2019-09-08 07:41:02,852 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-09-08 07:41:02,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52760 states. [2019-09-08 07:41:06,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52760 to 50571. [2019-09-08 07:41:06,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50571 states. [2019-09-08 07:41:06,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50571 states to 50571 states and 69966 transitions. [2019-09-08 07:41:06,240 INFO L78 Accepts]: Start accepts. Automaton has 50571 states and 69966 transitions. Word has length 150 [2019-09-08 07:41:06,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:41:06,241 INFO L475 AbstractCegarLoop]: Abstraction has 50571 states and 69966 transitions. [2019-09-08 07:41:06,241 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 07:41:06,241 INFO L276 IsEmpty]: Start isEmpty. Operand 50571 states and 69966 transitions. [2019-09-08 07:41:06,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-09-08 07:41:06,254 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:41:06,254 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:41:06,254 INFO L418 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:41:06,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:41:06,255 INFO L82 PathProgramCache]: Analyzing trace with hash 762532196, now seen corresponding path program 1 times [2019-09-08 07:41:06,255 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:41:06,255 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:41:06,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:41:06,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:41:06,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:41:06,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:41:06,553 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-09-08 07:41:06,553 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:41:06,554 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:41:06,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:41:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:41:06,772 INFO L256 TraceCheckSpWp]: Trace formula consists of 1017 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-08 07:41:06,780 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:41:07,640 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (6)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 07:41:07,650 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:41:07,650 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 16 [2019-09-08 07:41:07,652 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-08 07:41:07,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-08 07:41:07,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2019-09-08 07:41:07,653 INFO L87 Difference]: Start difference. First operand 50571 states and 69966 transitions. Second operand 16 states. [2019-09-08 07:42:08,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:42:08,495 INFO L93 Difference]: Finished difference Result 1157214 states and 1683690 transitions. [2019-09-08 07:42:08,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2019-09-08 07:42:08,495 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 151 [2019-09-08 07:42:08,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:42:20,717 INFO L225 Difference]: With dead ends: 1157214 [2019-09-08 07:42:20,717 INFO L226 Difference]: Without dead ends: 1106742 [2019-09-08 07:42:21,468 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 190 SyntacticMatches, 6 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1283 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=774, Invalid=3386, Unknown=0, NotChecked=0, Total=4160 [2019-09-08 07:42:22,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106742 states. [2019-09-08 07:43:50,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106742 to 1106298. [2019-09-08 07:43:50,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1106298 states. [2019-09-08 07:44:07,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106298 states to 1106298 states and 1467682 transitions. [2019-09-08 07:44:07,753 INFO L78 Accepts]: Start accepts. Automaton has 1106298 states and 1467682 transitions. Word has length 151 [2019-09-08 07:44:07,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:44:07,754 INFO L475 AbstractCegarLoop]: Abstraction has 1106298 states and 1467682 transitions. [2019-09-08 07:44:07,754 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-08 07:44:07,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1106298 states and 1467682 transitions. [2019-09-08 07:44:07,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-09-08 07:44:07,949 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:44:07,949 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:44:07,949 INFO L418 AbstractCegarLoop]: === Iteration 15 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:44:07,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:44:07,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1215951500, now seen corresponding path program 1 times [2019-09-08 07:44:07,950 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:44:07,950 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:44:07,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:44:07,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:44:07,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:44:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:44:08,358 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-08 07:44:08,359 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:44:08,359 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:44:08,385 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:44:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:44:08,556 INFO L256 TraceCheckSpWp]: Trace formula consists of 1021 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-08 07:44:08,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:44:08,868 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-08 07:44:08,883 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:44:08,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 6] total 25 [2019-09-08 07:44:08,885 INFO L454 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-09-08 07:44:08,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-09-08 07:44:08,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=552, Unknown=0, NotChecked=0, Total=600 [2019-09-08 07:44:08,887 INFO L87 Difference]: Start difference. First operand 1106298 states and 1467682 transitions. Second operand 25 states. [2019-09-08 07:44:11,389 WARN L188 SmtUtils]: Spent 2.43 s on a formula simplification. DAG size of input: 29 DAG size of output: 28 [2019-09-08 07:44:21,003 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2019-09-08 07:44:54,812 WARN L188 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49