/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:23:31,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:23:31,655 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:23:31,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:23:31,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:23:31,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:23:31,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:23:31,696 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:23:31,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:23:31,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:23:31,701 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:23:31,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2020-12-22 08:23:31,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:23:31,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:23:31,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:23:31,773 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:23:31,822 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:23:31,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:23:31,826 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:23:31,826 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:23:31,827 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:23:31,827 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:23:31,827 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:23:31,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:23:31,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:23:31,828 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:23:31,829 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:23:31,829 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:23:31,829 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:23:31,829 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:23:31,829 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:23:31,830 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:23:31,830 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:23:31,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:23:31,830 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:23:31,830 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:23:31,831 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:23:31,831 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:23:31,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:23:31,831 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:23:31,831 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:23:31,831 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:23:32,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:23:32,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:23:32,307 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:23:32,308 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:23:32,309 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:23:32,310 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-12-22 08:23:32,387 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/065451148/881096ac466144f79f8991068b13af55/FLAG3ecdaa480 [2020-12-22 08:23:33,096 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:23:33,097 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-12-22 08:23:33,111 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/065451148/881096ac466144f79f8991068b13af55/FLAG3ecdaa480 [2020-12-22 08:23:33,409 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/065451148/881096ac466144f79f8991068b13af55 [2020-12-22 08:23:33,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:23:33,414 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:23:33,416 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:23:33,416 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:23:33,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:23:33,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:23:33" (1/1) ... [2020-12-22 08:23:33,423 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47e54c8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:23:33, skipping insertion in model container [2020-12-22 08:23:33,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:23:33" (1/1) ... [2020-12-22 08:23:33,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:23:33,519 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:23:33,759 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[6849,6862] [2020-12-22 08:23:33,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:23:33,834 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:23:33,911 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[6849,6862] [2020-12-22 08:23:33,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:23:33,983 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:23:33,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:23:33 WrapperNode [2020-12-22 08:23:33,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:23:33,985 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:23:33,985 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:23:33,986 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:23:33,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:23:33" (1/1) ... [2020-12-22 08:23:34,012 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:23:33" (1/1) ... [2020-12-22 08:23:34,066 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:23:34,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:23:34,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:23:34,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:23:34,079 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:23:33" (1/1) ... [2020-12-22 08:23:34,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:23:33" (1/1) ... [2020-12-22 08:23:34,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:23:33" (1/1) ... [2020-12-22 08:23:34,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:23:33" (1/1) ... [2020-12-22 08:23:34,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:23:33" (1/1) ... [2020-12-22 08:23:34,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:23:33" (1/1) ... [2020-12-22 08:23:34,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:23:33" (1/1) ... [2020-12-22 08:23:34,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:23:34,137 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:23:34,137 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:23:34,137 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:23:34,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:23:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:23:34,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:23:34,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:23:34,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:23:34,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:23:35,390 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:23:35,390 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:23:35,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:23:35 BoogieIcfgContainer [2020-12-22 08:23:35,393 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:23:35,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:23:35,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:23:35,400 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:23:35,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:23:33" (1/3) ... [2020-12-22 08:23:35,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@334147fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:23:35, skipping insertion in model container [2020-12-22 08:23:35,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:23:33" (2/3) ... [2020-12-22 08:23:35,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@334147fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:23:35, skipping insertion in model container [2020-12-22 08:23:35,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:23:35" (3/3) ... [2020-12-22 08:23:35,405 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-12-22 08:23:35,413 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:23:35,420 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:23:35,444 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:23:35,475 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:23:35,476 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:23:35,476 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:23:35,476 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:23:35,476 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:23:35,477 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:23:35,477 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:23:35,477 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:23:35,500 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-12-22 08:23:35,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:23:35,512 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:23:35,513 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:23:35,513 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:23:35,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:23:35,520 INFO L82 PathProgramCache]: Analyzing trace with hash 965210613, now seen corresponding path program 1 times [2020-12-22 08:23:35,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:23:35,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592525395] [2020-12-22 08:23:35,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:23:35,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:23:36,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:23:36,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592525395] [2020-12-22 08:23:36,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:23:36,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:23:36,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167853237] [2020-12-22 08:23:36,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:23:36,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:23:36,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:23:36,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:23:36,027 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 3 states. [2020-12-22 08:23:36,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:23:36,187 INFO L93 Difference]: Finished difference Result 346 states and 569 transitions. [2020-12-22 08:23:36,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:23:36,189 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-22 08:23:36,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:23:36,212 INFO L225 Difference]: With dead ends: 346 [2020-12-22 08:23:36,212 INFO L226 Difference]: Without dead ends: 261 [2020-12-22 08:23:36,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:23:36,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-12-22 08:23:36,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 259. [2020-12-22 08:23:36,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-12-22 08:23:36,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 387 transitions. [2020-12-22 08:23:36,292 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 387 transitions. Word has length 64 [2020-12-22 08:23:36,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:23:36,293 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 387 transitions. [2020-12-22 08:23:36,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:23:36,294 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 387 transitions. [2020-12-22 08:23:36,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 08:23:36,297 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:23:36,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:23:36,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:23:36,298 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:23:36,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:23:36,299 INFO L82 PathProgramCache]: Analyzing trace with hash -404660772, now seen corresponding path program 1 times [2020-12-22 08:23:36,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:23:36,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455804360] [2020-12-22 08:23:36,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:23:36,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:23:36,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:23:36,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455804360] [2020-12-22 08:23:36,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:23:36,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:23:36,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274363108] [2020-12-22 08:23:36,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:23:36,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:23:36,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:23:36,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:23:36,663 INFO L87 Difference]: Start difference. First operand 259 states and 387 transitions. Second operand 6 states. [2020-12-22 08:23:37,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:23:37,051 INFO L93 Difference]: Finished difference Result 959 states and 1471 transitions. [2020-12-22 08:23:37,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:23:37,053 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-12-22 08:23:37,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:23:37,065 INFO L225 Difference]: With dead ends: 959 [2020-12-22 08:23:37,065 INFO L226 Difference]: Without dead ends: 759 [2020-12-22 08:23:37,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:23:37,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2020-12-22 08:23:37,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 753. [2020-12-22 08:23:37,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2020-12-22 08:23:37,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1145 transitions. [2020-12-22 08:23:37,202 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1145 transitions. Word has length 65 [2020-12-22 08:23:37,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:23:37,203 INFO L481 AbstractCegarLoop]: Abstraction has 753 states and 1145 transitions. [2020-12-22 08:23:37,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:23:37,203 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1145 transitions. [2020-12-22 08:23:37,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:23:37,212 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:23:37,212 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:23:37,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:23:37,213 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:23:37,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:23:37,214 INFO L82 PathProgramCache]: Analyzing trace with hash 372471029, now seen corresponding path program 1 times [2020-12-22 08:23:37,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:23:37,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259378015] [2020-12-22 08:23:37,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:23:37,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:23:37,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:23:37,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259378015] [2020-12-22 08:23:37,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:23:37,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:23:37,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870914626] [2020-12-22 08:23:37,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:23:37,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:23:37,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:23:37,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:23:37,387 INFO L87 Difference]: Start difference. First operand 753 states and 1145 transitions. Second operand 6 states. [2020-12-22 08:23:38,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:23:38,056 INFO L93 Difference]: Finished difference Result 2517 states and 3884 transitions. [2020-12-22 08:23:38,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:23:38,057 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-12-22 08:23:38,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:23:38,068 INFO L225 Difference]: With dead ends: 2517 [2020-12-22 08:23:38,069 INFO L226 Difference]: Without dead ends: 1811 [2020-12-22 08:23:38,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:23:38,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1811 states. [2020-12-22 08:23:38,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1811 to 1807. [2020-12-22 08:23:38,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1807 states. [2020-12-22 08:23:38,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1807 states to 1807 states and 2778 transitions. [2020-12-22 08:23:38,202 INFO L78 Accepts]: Start accepts. Automaton has 1807 states and 2778 transitions. Word has length 66 [2020-12-22 08:23:38,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:23:38,203 INFO L481 AbstractCegarLoop]: Abstraction has 1807 states and 2778 transitions. [2020-12-22 08:23:38,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:23:38,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1807 states and 2778 transitions. [2020-12-22 08:23:38,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:23:38,207 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:23:38,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:23:38,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:23:38,207 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:23:38,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:23:38,208 INFO L82 PathProgramCache]: Analyzing trace with hash 342598487, now seen corresponding path program 1 times [2020-12-22 08:23:38,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:23:38,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606561110] [2020-12-22 08:23:38,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:23:38,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:23:38,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:23:38,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606561110] [2020-12-22 08:23:38,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:23:38,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:23:38,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651128846] [2020-12-22 08:23:38,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:23:38,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:23:38,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:23:38,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:23:38,384 INFO L87 Difference]: Start difference. First operand 1807 states and 2778 transitions. Second operand 6 states. [2020-12-22 08:23:39,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:23:39,167 INFO L93 Difference]: Finished difference Result 6247 states and 9679 transitions. [2020-12-22 08:23:39,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:23:39,168 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-12-22 08:23:39,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:23:39,202 INFO L225 Difference]: With dead ends: 6247 [2020-12-22 08:23:39,202 INFO L226 Difference]: Without dead ends: 4537 [2020-12-22 08:23:39,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:23:39,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4537 states. [2020-12-22 08:23:39,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4537 to 4127. [2020-12-22 08:23:39,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4127 states. [2020-12-22 08:23:39,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4127 states to 4127 states and 6359 transitions. [2020-12-22 08:23:39,536 INFO L78 Accepts]: Start accepts. Automaton has 4127 states and 6359 transitions. Word has length 66 [2020-12-22 08:23:39,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:23:39,536 INFO L481 AbstractCegarLoop]: Abstraction has 4127 states and 6359 transitions. [2020-12-22 08:23:39,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:23:39,537 INFO L276 IsEmpty]: Start isEmpty. Operand 4127 states and 6359 transitions. [2020-12-22 08:23:39,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:23:39,539 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:23:39,539 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:23:39,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:23:39,540 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:23:39,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:23:39,540 INFO L82 PathProgramCache]: Analyzing trace with hash -440340154, now seen corresponding path program 1 times [2020-12-22 08:23:39,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:23:39,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401480696] [2020-12-22 08:23:39,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:23:39,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:23:39,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:23:39,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401480696] [2020-12-22 08:23:39,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:23:39,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:23:39,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508396779] [2020-12-22 08:23:39,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:23:39,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:23:39,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:23:39,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:23:39,733 INFO L87 Difference]: Start difference. First operand 4127 states and 6359 transitions. Second operand 6 states. [2020-12-22 08:23:40,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:23:40,834 INFO L93 Difference]: Finished difference Result 15476 states and 23896 transitions. [2020-12-22 08:23:40,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:23:40,835 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-12-22 08:23:40,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:23:40,894 INFO L225 Difference]: With dead ends: 15476 [2020-12-22 08:23:40,895 INFO L226 Difference]: Without dead ends: 11419 [2020-12-22 08:23:40,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:23:40,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11419 states. [2020-12-22 08:23:41,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11419 to 11415. [2020-12-22 08:23:41,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11415 states. [2020-12-22 08:23:41,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11415 states to 11415 states and 17539 transitions. [2020-12-22 08:23:41,711 INFO L78 Accepts]: Start accepts. Automaton has 11415 states and 17539 transitions. Word has length 66 [2020-12-22 08:23:41,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:23:41,711 INFO L481 AbstractCegarLoop]: Abstraction has 11415 states and 17539 transitions. [2020-12-22 08:23:41,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:23:41,712 INFO L276 IsEmpty]: Start isEmpty. Operand 11415 states and 17539 transitions. [2020-12-22 08:23:41,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:23:41,714 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:23:41,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:23:41,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:23:41,715 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:23:41,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:23:41,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1058443688, now seen corresponding path program 1 times [2020-12-22 08:23:41,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:23:41,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559244260] [2020-12-22 08:23:41,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:23:41,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:23:41,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:23:41,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559244260] [2020-12-22 08:23:41,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:23:41,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:23:41,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005931960] [2020-12-22 08:23:41,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:23:41,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:23:41,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:23:41,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:23:41,917 INFO L87 Difference]: Start difference. First operand 11415 states and 17539 transitions. Second operand 5 states. [2020-12-22 08:23:43,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:23:43,142 INFO L93 Difference]: Finished difference Result 21140 states and 32261 transitions. [2020-12-22 08:23:43,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:23:43,143 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-12-22 08:23:43,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:23:43,230 INFO L225 Difference]: With dead ends: 21140 [2020-12-22 08:23:43,231 INFO L226 Difference]: Without dead ends: 21138 [2020-12-22 08:23:43,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:23:43,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21138 states. [2020-12-22 08:23:44,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21138 to 11613. [2020-12-22 08:23:44,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11613 states. [2020-12-22 08:23:44,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11613 states to 11613 states and 17737 transitions. [2020-12-22 08:23:44,198 INFO L78 Accepts]: Start accepts. Automaton has 11613 states and 17737 transitions. Word has length 67 [2020-12-22 08:23:44,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:23:44,198 INFO L481 AbstractCegarLoop]: Abstraction has 11613 states and 17737 transitions. [2020-12-22 08:23:44,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:23:44,198 INFO L276 IsEmpty]: Start isEmpty. Operand 11613 states and 17737 transitions. [2020-12-22 08:23:44,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:23:44,202 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:23:44,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:23:44,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:23:44,203 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:23:44,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:23:44,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1287643169, now seen corresponding path program 1 times [2020-12-22 08:23:44,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:23:44,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223702903] [2020-12-22 08:23:44,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:23:44,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:23:44,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:23:44,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223702903] [2020-12-22 08:23:44,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:23:44,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:23:44,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991425067] [2020-12-22 08:23:44,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:23:44,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:23:44,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:23:44,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:23:44,346 INFO L87 Difference]: Start difference. First operand 11613 states and 17737 transitions. Second operand 4 states. [2020-12-22 08:23:45,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:23:45,445 INFO L93 Difference]: Finished difference Result 32350 states and 49260 transitions. [2020-12-22 08:23:45,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:23:45,446 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-12-22 08:23:45,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:23:45,494 INFO L225 Difference]: With dead ends: 32350 [2020-12-22 08:23:45,495 INFO L226 Difference]: Without dead ends: 21338 [2020-12-22 08:23:45,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:23:45,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21338 states. [2020-12-22 08:23:46,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21338 to 21336. [2020-12-22 08:23:46,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21336 states. [2020-12-22 08:23:46,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21336 states to 21336 states and 32260 transitions. [2020-12-22 08:23:46,842 INFO L78 Accepts]: Start accepts. Automaton has 21336 states and 32260 transitions. Word has length 68 [2020-12-22 08:23:46,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:23:46,842 INFO L481 AbstractCegarLoop]: Abstraction has 21336 states and 32260 transitions. [2020-12-22 08:23:46,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:23:46,843 INFO L276 IsEmpty]: Start isEmpty. Operand 21336 states and 32260 transitions. [2020-12-22 08:23:46,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:23:46,846 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:23:46,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:23:46,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:23:46,847 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:23:46,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:23:46,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1292543968, now seen corresponding path program 1 times [2020-12-22 08:23:46,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:23:46,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300979996] [2020-12-22 08:23:46,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:23:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:23:46,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:23:46,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300979996] [2020-12-22 08:23:46,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:23:46,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:23:46,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258529229] [2020-12-22 08:23:46,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:23:46,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:23:46,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:23:46,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:23:46,908 INFO L87 Difference]: Start difference. First operand 21336 states and 32260 transitions. Second operand 3 states. [2020-12-22 08:23:48,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:23:48,126 INFO L93 Difference]: Finished difference Result 29698 states and 44778 transitions. [2020-12-22 08:23:48,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:23:48,127 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-22 08:23:48,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:23:48,182 INFO L225 Difference]: With dead ends: 29698 [2020-12-22 08:23:48,182 INFO L226 Difference]: Without dead ends: 25112 [2020-12-22 08:23:48,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:23:48,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25112 states. [2020-12-22 08:23:49,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25112 to 23127. [2020-12-22 08:23:49,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23127 states. [2020-12-22 08:23:49,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23127 states to 23127 states and 34386 transitions. [2020-12-22 08:23:49,503 INFO L78 Accepts]: Start accepts. Automaton has 23127 states and 34386 transitions. Word has length 69 [2020-12-22 08:23:49,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:23:49,503 INFO L481 AbstractCegarLoop]: Abstraction has 23127 states and 34386 transitions. [2020-12-22 08:23:49,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:23:49,504 INFO L276 IsEmpty]: Start isEmpty. Operand 23127 states and 34386 transitions. [2020-12-22 08:23:49,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:23:49,507 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:23:49,507 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:23:49,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:23:49,508 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:23:49,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:23:49,508 INFO L82 PathProgramCache]: Analyzing trace with hash 494119873, now seen corresponding path program 1 times [2020-12-22 08:23:49,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:23:49,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987320448] [2020-12-22 08:23:49,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:23:49,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:23:49,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:23:49,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987320448] [2020-12-22 08:23:49,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:23:49,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:23:49,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484199535] [2020-12-22 08:23:49,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:23:49,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:23:49,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:23:49,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:23:49,568 INFO L87 Difference]: Start difference. First operand 23127 states and 34386 transitions. Second operand 3 states. [2020-12-22 08:23:51,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:23:51,065 INFO L93 Difference]: Finished difference Result 40980 states and 61017 transitions. [2020-12-22 08:23:51,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:23:51,065 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-22 08:23:51,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:23:51,111 INFO L225 Difference]: With dead ends: 40980 [2020-12-22 08:23:51,112 INFO L226 Difference]: Without dead ends: 28672 [2020-12-22 08:23:51,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:23:51,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28672 states. [2020-12-22 08:23:52,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28672 to 28238. [2020-12-22 08:23:52,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28238 states. [2020-12-22 08:23:52,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28238 states to 28238 states and 41331 transitions. [2020-12-22 08:23:52,881 INFO L78 Accepts]: Start accepts. Automaton has 28238 states and 41331 transitions. Word has length 69 [2020-12-22 08:23:52,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:23:52,881 INFO L481 AbstractCegarLoop]: Abstraction has 28238 states and 41331 transitions. [2020-12-22 08:23:52,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:23:52,882 INFO L276 IsEmpty]: Start isEmpty. Operand 28238 states and 41331 transitions. [2020-12-22 08:23:52,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:23:52,885 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:23:52,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:23:52,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:23:52,886 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:23:52,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:23:52,886 INFO L82 PathProgramCache]: Analyzing trace with hash -2048736576, now seen corresponding path program 1 times [2020-12-22 08:23:52,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:23:52,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928280175] [2020-12-22 08:23:52,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:23:52,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:23:52,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:23:52,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928280175] [2020-12-22 08:23:52,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:23:52,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:23:52,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213841094] [2020-12-22 08:23:52,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:23:52,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:23:52,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:23:52,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:23:52,984 INFO L87 Difference]: Start difference. First operand 28238 states and 41331 transitions. Second operand 6 states. [2020-12-22 08:23:57,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:23:57,198 INFO L93 Difference]: Finished difference Result 100546 states and 146881 transitions. [2020-12-22 08:23:57,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:23:57,202 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-12-22 08:23:57,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:23:57,291 INFO L225 Difference]: With dead ends: 100546 [2020-12-22 08:23:57,292 INFO L226 Difference]: Without dead ends: 78063 [2020-12-22 08:23:57,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:23:57,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78063 states. [2020-12-22 08:24:00,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78063 to 42330. [2020-12-22 08:24:00,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42330 states. [2020-12-22 08:24:00,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42330 states to 42330 states and 61781 transitions. [2020-12-22 08:24:00,502 INFO L78 Accepts]: Start accepts. Automaton has 42330 states and 61781 transitions. Word has length 69 [2020-12-22 08:24:00,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:24:00,502 INFO L481 AbstractCegarLoop]: Abstraction has 42330 states and 61781 transitions. [2020-12-22 08:24:00,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:24:00,502 INFO L276 IsEmpty]: Start isEmpty. Operand 42330 states and 61781 transitions. [2020-12-22 08:24:00,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:24:00,505 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:24:00,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:24:00,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:24:00,506 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:24:00,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:24:00,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1719145697, now seen corresponding path program 1 times [2020-12-22 08:24:00,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:24:00,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948620215] [2020-12-22 08:24:00,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:24:00,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:24:00,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:24:00,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948620215] [2020-12-22 08:24:00,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:24:00,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:24:00,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847553613] [2020-12-22 08:24:00,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:24:00,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:24:00,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:24:00,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:24:00,561 INFO L87 Difference]: Start difference. First operand 42330 states and 61781 transitions. Second operand 3 states. [2020-12-22 08:24:04,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:24:04,810 INFO L93 Difference]: Finished difference Result 107900 states and 157392 transitions. [2020-12-22 08:24:04,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:24:04,811 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-22 08:24:04,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:24:04,909 INFO L225 Difference]: With dead ends: 107900 [2020-12-22 08:24:04,909 INFO L226 Difference]: Without dead ends: 73375 [2020-12-22 08:24:04,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:24:05,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73375 states. [2020-12-22 08:24:09,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73375 to 73373. [2020-12-22 08:24:09,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73373 states. [2020-12-22 08:24:09,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73373 states to 73373 states and 105806 transitions. [2020-12-22 08:24:09,682 INFO L78 Accepts]: Start accepts. Automaton has 73373 states and 105806 transitions. Word has length 69 [2020-12-22 08:24:09,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:24:09,683 INFO L481 AbstractCegarLoop]: Abstraction has 73373 states and 105806 transitions. [2020-12-22 08:24:09,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:24:09,683 INFO L276 IsEmpty]: Start isEmpty. Operand 73373 states and 105806 transitions. [2020-12-22 08:24:09,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:24:09,688 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:24:09,688 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:24:09,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:24:09,689 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:24:09,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:24:09,689 INFO L82 PathProgramCache]: Analyzing trace with hash -760950752, now seen corresponding path program 1 times [2020-12-22 08:24:09,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:24:09,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534710806] [2020-12-22 08:24:09,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:24:09,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:24:09,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:24:09,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534710806] [2020-12-22 08:24:09,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:24:09,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:24:09,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989774409] [2020-12-22 08:24:09,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:24:09,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:24:09,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:24:09,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:24:09,806 INFO L87 Difference]: Start difference. First operand 73373 states and 105806 transitions. Second operand 6 states. [2020-12-22 08:24:19,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:24:19,675 INFO L93 Difference]: Finished difference Result 181563 states and 262266 transitions. [2020-12-22 08:24:19,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:24:19,676 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-12-22 08:24:19,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:24:20,087 INFO L225 Difference]: With dead ends: 181563 [2020-12-22 08:24:20,087 INFO L226 Difference]: Without dead ends: 168789 [2020-12-22 08:24:20,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:24:20,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168789 states. [2020-12-22 08:24:26,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168789 to 86547. [2020-12-22 08:24:26,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86547 states. [2020-12-22 08:24:26,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86547 states to 86547 states and 124754 transitions. [2020-12-22 08:24:26,637 INFO L78 Accepts]: Start accepts. Automaton has 86547 states and 124754 transitions. Word has length 69 [2020-12-22 08:24:26,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:24:26,637 INFO L481 AbstractCegarLoop]: Abstraction has 86547 states and 124754 transitions. [2020-12-22 08:24:26,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:24:26,638 INFO L276 IsEmpty]: Start isEmpty. Operand 86547 states and 124754 transitions. [2020-12-22 08:24:26,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:24:26,642 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:24:26,642 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:24:26,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:24:26,643 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:24:26,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:24:26,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1412359137, now seen corresponding path program 1 times [2020-12-22 08:24:26,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:24:26,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037222888] [2020-12-22 08:24:26,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:24:26,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:24:26,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:24:26,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037222888] [2020-12-22 08:24:26,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:24:26,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:24:26,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035389351] [2020-12-22 08:24:26,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:24:26,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:24:26,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:24:26,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:24:26,748 INFO L87 Difference]: Start difference. First operand 86547 states and 124754 transitions. Second operand 6 states. [2020-12-22 08:24:38,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:24:38,080 INFO L93 Difference]: Finished difference Result 194855 states and 281335 transitions. [2020-12-22 08:24:38,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:24:38,081 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-12-22 08:24:38,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:24:38,531 INFO L225 Difference]: With dead ends: 194855 [2020-12-22 08:24:38,531 INFO L226 Difference]: Without dead ends: 171443 [2020-12-22 08:24:38,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:24:38,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171443 states. [2020-12-22 08:24:46,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171443 to 97017. [2020-12-22 08:24:46,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97017 states. [2020-12-22 08:24:46,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97017 states to 97017 states and 140036 transitions. [2020-12-22 08:24:46,277 INFO L78 Accepts]: Start accepts. Automaton has 97017 states and 140036 transitions. Word has length 69 [2020-12-22 08:24:46,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:24:46,278 INFO L481 AbstractCegarLoop]: Abstraction has 97017 states and 140036 transitions. [2020-12-22 08:24:46,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:24:46,278 INFO L276 IsEmpty]: Start isEmpty. Operand 97017 states and 140036 transitions. [2020-12-22 08:24:46,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:24:46,283 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:24:46,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:24:46,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:24:46,283 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:24:46,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:24:46,284 INFO L82 PathProgramCache]: Analyzing trace with hash -677295103, now seen corresponding path program 1 times [2020-12-22 08:24:46,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:24:46,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350442211] [2020-12-22 08:24:46,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:24:46,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:24:46,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:24:46,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350442211] [2020-12-22 08:24:46,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:24:46,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:24:46,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309418247] [2020-12-22 08:24:46,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:24:46,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:24:46,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:24:46,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:24:46,352 INFO L87 Difference]: Start difference. First operand 97017 states and 140036 transitions. Second operand 5 states. [2020-12-22 08:24:56,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:24:56,886 INFO L93 Difference]: Finished difference Result 231474 states and 333368 transitions. [2020-12-22 08:24:56,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:24:56,886 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-12-22 08:24:56,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:24:57,083 INFO L225 Difference]: With dead ends: 231474 [2020-12-22 08:24:57,084 INFO L226 Difference]: Without dead ends: 134571 [2020-12-22 08:24:57,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:24:57,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134571 states. [2020-12-22 08:25:05,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134571 to 97017. [2020-12-22 08:25:05,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97017 states. [2020-12-22 08:25:05,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97017 states to 97017 states and 138991 transitions. [2020-12-22 08:25:05,241 INFO L78 Accepts]: Start accepts. Automaton has 97017 states and 138991 transitions. Word has length 69 [2020-12-22 08:25:05,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:25:05,242 INFO L481 AbstractCegarLoop]: Abstraction has 97017 states and 138991 transitions. [2020-12-22 08:25:05,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:25:05,242 INFO L276 IsEmpty]: Start isEmpty. Operand 97017 states and 138991 transitions. [2020-12-22 08:25:05,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 08:25:05,247 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:25:05,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:25:05,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:25:05,247 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:25:05,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:25:05,248 INFO L82 PathProgramCache]: Analyzing trace with hash -2051708963, now seen corresponding path program 1 times [2020-12-22 08:25:05,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:25:05,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464656706] [2020-12-22 08:25:05,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:25:05,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:25:05,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:25:05,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464656706] [2020-12-22 08:25:05,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:25:05,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:25:05,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069778757] [2020-12-22 08:25:05,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:25:05,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:25:05,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:25:05,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:25:05,353 INFO L87 Difference]: Start difference. First operand 97017 states and 138991 transitions. Second operand 6 states. [2020-12-22 08:25:18,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:25:18,770 INFO L93 Difference]: Finished difference Result 217404 states and 311723 transitions. [2020-12-22 08:25:18,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:25:18,770 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-12-22 08:25:18,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:25:19,048 INFO L225 Difference]: With dead ends: 217404 [2020-12-22 08:25:19,048 INFO L226 Difference]: Without dead ends: 169647 [2020-12-22 08:25:19,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:25:19,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169647 states. [2020-12-22 08:25:28,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169647 to 112320. [2020-12-22 08:25:28,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112320 states. [2020-12-22 08:25:28,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112320 states to 112320 states and 160869 transitions. [2020-12-22 08:25:28,970 INFO L78 Accepts]: Start accepts. Automaton has 112320 states and 160869 transitions. Word has length 70 [2020-12-22 08:25:28,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:25:28,970 INFO L481 AbstractCegarLoop]: Abstraction has 112320 states and 160869 transitions. [2020-12-22 08:25:28,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:25:28,970 INFO L276 IsEmpty]: Start isEmpty. Operand 112320 states and 160869 transitions. [2020-12-22 08:25:28,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 08:25:28,976 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:25:28,977 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:25:28,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:25:28,977 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:25:28,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:25:28,978 INFO L82 PathProgramCache]: Analyzing trace with hash -652960215, now seen corresponding path program 1 times [2020-12-22 08:25:28,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:25:28,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059398686] [2020-12-22 08:25:28,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:25:28,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:25:29,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:25:29,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059398686] [2020-12-22 08:25:29,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:25:29,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:25:29,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022764561] [2020-12-22 08:25:29,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:25:29,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:25:29,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:25:29,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:25:29,027 INFO L87 Difference]: Start difference. First operand 112320 states and 160869 transitions. Second operand 3 states. [2020-12-22 08:25:41,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:25:41,506 INFO L93 Difference]: Finished difference Result 249055 states and 355632 transitions. [2020-12-22 08:25:41,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:25:41,507 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-12-22 08:25:41,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:25:41,913 INFO L225 Difference]: With dead ends: 249055 [2020-12-22 08:25:41,913 INFO L226 Difference]: Without dead ends: 142498 [2020-12-22 08:25:42,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:25:42,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142498 states.