/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/pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 07:33:41,822 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 07:33:41,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 07:33:41,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 07:33:41,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 07:33:41,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 07:33:41,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 07:33:41,878 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 07:33:41,879 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 07:33:41,880 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 07:33:41,882 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 07:33:41,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 07:33:41,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 07:33:41,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 07:33:41,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 07:33:41,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 07:33:41,907 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 07:33:41,917 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 07:33:41,918 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 07:33:41,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 07:33:41,920 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 07:33:41,947 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 07:33:41,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 07:33:41,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 07:33:41,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 07:33:41,950 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 07:33:41,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 07:33:41,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 07:33:41,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 07:33:41,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 07:33:41,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 07:33:41,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 07:33:41,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 07:33:41,952 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 07:33:41,952 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 07:33:41,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 07:33:41,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 07:33:41,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 07:33:41,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:33:41,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 07:33:41,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 07:33:41,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 07:33:41,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 07:33:41,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 07:33:41,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 07:33:41,955 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 07:33:41,956 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 07:33:42,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 07:33:42,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 07:33:42,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 07:33:42,407 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 07:33:42,408 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 07:33:42,409 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c [2020-12-22 07:33:42,494 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59c4c1d0d/421e5d7ffafb41009aa678e808bc8f2b/FLAG3e0a0424a [2020-12-22 07:33:43,212 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 07:33:43,213 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c [2020-12-22 07:33:43,223 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59c4c1d0d/421e5d7ffafb41009aa678e808bc8f2b/FLAG3e0a0424a [2020-12-22 07:33:43,522 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59c4c1d0d/421e5d7ffafb41009aa678e808bc8f2b [2020-12-22 07:33:43,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 07:33:43,529 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 07:33:43,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 07:33:43,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 07:33:43,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 07:33:43,538 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:33:43" (1/1) ... [2020-12-22 07:33:43,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ad9a0cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:33:43, skipping insertion in model container [2020-12-22 07:33:43,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:33:43" (1/1) ... [2020-12-22 07:33:43,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 07:33:43,583 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 07:33:43,790 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/pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c[8379,8392] [2020-12-22 07:33:43,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:33:43,804 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 07:33:43,856 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/pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c[8379,8392] [2020-12-22 07:33:43,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:33:43,877 INFO L208 MainTranslator]: Completed translation [2020-12-22 07:33:43,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:33:43 WrapperNode [2020-12-22 07:33:43,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 07:33:43,879 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 07:33:43,879 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 07:33:43,880 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 07:33:43,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:33:43" (1/1) ... [2020-12-22 07:33:43,899 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:33:43" (1/1) ... [2020-12-22 07:33:43,937 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 07:33:43,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 07:33:43,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 07:33:43,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 07:33:43,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:33:43" (1/1) ... [2020-12-22 07:33:43,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:33:43" (1/1) ... [2020-12-22 07:33:43,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:33:43" (1/1) ... [2020-12-22 07:33:43,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:33:43" (1/1) ... [2020-12-22 07:33:43,961 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:33:43" (1/1) ... [2020-12-22 07:33:43,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:33:43" (1/1) ... [2020-12-22 07:33:43,971 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:33:43" (1/1) ... [2020-12-22 07:33:43,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 07:33:43,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 07:33:43,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 07:33:43,977 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 07:33:43,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:33:43" (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 07:33:44,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 07:33:44,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 07:33:44,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 07:33:44,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 07:33:44,949 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 07:33:44,950 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2020-12-22 07:33:44,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:33:44 BoogieIcfgContainer [2020-12-22 07:33:44,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 07:33:44,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 07:33:44,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 07:33:44,957 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 07:33:44,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:33:43" (1/3) ... [2020-12-22 07:33:44,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@691fb721 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:33:44, skipping insertion in model container [2020-12-22 07:33:44,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:33:43" (2/3) ... [2020-12-22 07:33:44,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@691fb721 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:33:44, skipping insertion in model container [2020-12-22 07:33:44,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:33:44" (3/3) ... [2020-12-22 07:33:44,961 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c [2020-12-22 07:33:44,968 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 07:33:44,973 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 07:33:44,999 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 07:33:45,029 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 07:33:45,030 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 07:33:45,030 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 07:33:45,030 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 07:33:45,030 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 07:33:45,030 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 07:33:45,030 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 07:33:45,031 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 07:33:45,047 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-12-22 07:33:45,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 07:33:45,055 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:45,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:33:45,056 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:45,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:45,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1837107710, now seen corresponding path program 1 times [2020-12-22 07:33:45,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:45,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715772298] [2020-12-22 07:33:45,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:45,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:45,327 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 07:33:45,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715772298] [2020-12-22 07:33:45,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:45,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 07:33:45,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669444280] [2020-12-22 07:33:45,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 07:33:45,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:45,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 07:33:45,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 07:33:45,350 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 2 states. [2020-12-22 07:33:45,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:45,373 INFO L93 Difference]: Finished difference Result 120 states and 199 transitions. [2020-12-22 07:33:45,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 07:33:45,375 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 29 [2020-12-22 07:33:45,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:45,386 INFO L225 Difference]: With dead ends: 120 [2020-12-22 07:33:45,387 INFO L226 Difference]: Without dead ends: 72 [2020-12-22 07:33:45,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 07:33:45,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-12-22 07:33:45,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-12-22 07:33:45,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-22 07:33:45,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 120 transitions. [2020-12-22 07:33:45,433 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 120 transitions. Word has length 29 [2020-12-22 07:33:45,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:45,434 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 120 transitions. [2020-12-22 07:33:45,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 07:33:45,434 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 120 transitions. [2020-12-22 07:33:45,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 07:33:45,436 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:45,436 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] [2020-12-22 07:33:45,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 07:33:45,437 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:45,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:45,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1971121216, now seen corresponding path program 1 times [2020-12-22 07:33:45,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:45,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621801433] [2020-12-22 07:33:45,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:45,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:45,561 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 07:33:45,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621801433] [2020-12-22 07:33:45,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:45,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:33:45,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402022310] [2020-12-22 07:33:45,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:33:45,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:45,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:33:45,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:33:45,566 INFO L87 Difference]: Start difference. First operand 72 states and 120 transitions. Second operand 5 states. [2020-12-22 07:33:45,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:45,666 INFO L93 Difference]: Finished difference Result 119 states and 192 transitions. [2020-12-22 07:33:45,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:33:45,667 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-12-22 07:33:45,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:45,669 INFO L225 Difference]: With dead ends: 119 [2020-12-22 07:33:45,669 INFO L226 Difference]: Without dead ends: 72 [2020-12-22 07:33:45,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:33:45,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-12-22 07:33:45,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-12-22 07:33:45,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-22 07:33:45,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 97 transitions. [2020-12-22 07:33:45,679 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 97 transitions. Word has length 29 [2020-12-22 07:33:45,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:45,680 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 97 transitions. [2020-12-22 07:33:45,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:33:45,680 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 97 transitions. [2020-12-22 07:33:45,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 07:33:45,682 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:45,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:33:45,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 07:33:45,683 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:45,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:45,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1333293339, now seen corresponding path program 1 times [2020-12-22 07:33:45,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:45,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883218992] [2020-12-22 07:33:45,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:45,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:45,862 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 07:33:45,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883218992] [2020-12-22 07:33:45,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:45,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:33:45,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494086353] [2020-12-22 07:33:45,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:33:45,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:45,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:33:45,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:33:45,866 INFO L87 Difference]: Start difference. First operand 72 states and 97 transitions. Second operand 3 states. [2020-12-22 07:33:45,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:45,898 INFO L93 Difference]: Finished difference Result 152 states and 223 transitions. [2020-12-22 07:33:45,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:33:45,902 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-12-22 07:33:45,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:45,907 INFO L225 Difference]: With dead ends: 152 [2020-12-22 07:33:45,907 INFO L226 Difference]: Without dead ends: 109 [2020-12-22 07:33:45,908 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 07:33:45,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-22 07:33:45,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 107. [2020-12-22 07:33:45,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-12-22 07:33:45,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 153 transitions. [2020-12-22 07:33:45,942 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 153 transitions. Word has length 51 [2020-12-22 07:33:45,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:45,942 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 153 transitions. [2020-12-22 07:33:45,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:33:45,943 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 153 transitions. [2020-12-22 07:33:45,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 07:33:45,948 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:45,948 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] [2020-12-22 07:33:45,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 07:33:45,948 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:45,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:45,949 INFO L82 PathProgramCache]: Analyzing trace with hash -606737519, now seen corresponding path program 1 times [2020-12-22 07:33:45,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:45,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388495770] [2020-12-22 07:33:45,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:45,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:46,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:33:46,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388495770] [2020-12-22 07:33:46,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:46,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:33:46,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784057559] [2020-12-22 07:33:46,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:33:46,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:46,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:33:46,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:33:46,092 INFO L87 Difference]: Start difference. First operand 107 states and 153 transitions. Second operand 3 states. [2020-12-22 07:33:46,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:46,140 INFO L93 Difference]: Finished difference Result 251 states and 381 transitions. [2020-12-22 07:33:46,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:33:46,141 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-12-22 07:33:46,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:46,143 INFO L225 Difference]: With dead ends: 251 [2020-12-22 07:33:46,144 INFO L226 Difference]: Without dead ends: 173 [2020-12-22 07:33:46,145 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 07:33:46,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-12-22 07:33:46,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 171. [2020-12-22 07:33:46,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-12-22 07:33:46,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 254 transitions. [2020-12-22 07:33:46,166 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 254 transitions. Word has length 51 [2020-12-22 07:33:46,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:46,167 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 254 transitions. [2020-12-22 07:33:46,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:33:46,167 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 254 transitions. [2020-12-22 07:33:46,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 07:33:46,168 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:46,169 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] [2020-12-22 07:33:46,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 07:33:46,169 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:46,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:46,170 INFO L82 PathProgramCache]: Analyzing trace with hash 2093945095, now seen corresponding path program 1 times [2020-12-22 07:33:46,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:46,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653740426] [2020-12-22 07:33:46,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:46,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:46,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:33:46,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653740426] [2020-12-22 07:33:46,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:46,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:33:46,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426421439] [2020-12-22 07:33:46,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:33:46,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:46,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:33:46,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:33:46,350 INFO L87 Difference]: Start difference. First operand 171 states and 254 transitions. Second operand 3 states. [2020-12-22 07:33:46,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:46,408 INFO L93 Difference]: Finished difference Result 431 states and 664 transitions. [2020-12-22 07:33:46,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:33:46,409 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-12-22 07:33:46,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:46,416 INFO L225 Difference]: With dead ends: 431 [2020-12-22 07:33:46,416 INFO L226 Difference]: Without dead ends: 289 [2020-12-22 07:33:46,420 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 07:33:46,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-12-22 07:33:46,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 287. [2020-12-22 07:33:46,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-12-22 07:33:46,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 434 transitions. [2020-12-22 07:33:46,483 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 434 transitions. Word has length 51 [2020-12-22 07:33:46,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:46,483 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 434 transitions. [2020-12-22 07:33:46,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:33:46,484 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 434 transitions. [2020-12-22 07:33:46,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 07:33:46,487 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:46,487 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] [2020-12-22 07:33:46,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 07:33:46,488 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:46,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:46,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1863229059, now seen corresponding path program 1 times [2020-12-22 07:33:46,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:46,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349897284] [2020-12-22 07:33:46,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:46,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:46,636 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 07:33:46,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349897284] [2020-12-22 07:33:46,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:46,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:33:46,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704590618] [2020-12-22 07:33:46,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:33:46,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:46,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:33:46,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:33:46,645 INFO L87 Difference]: Start difference. First operand 287 states and 434 transitions. Second operand 3 states. [2020-12-22 07:33:46,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:46,734 INFO L93 Difference]: Finished difference Result 755 states and 1164 transitions. [2020-12-22 07:33:46,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:33:46,735 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-12-22 07:33:46,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:46,740 INFO L225 Difference]: With dead ends: 755 [2020-12-22 07:33:46,740 INFO L226 Difference]: Without dead ends: 497 [2020-12-22 07:33:46,746 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 07:33:46,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2020-12-22 07:33:46,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 495. [2020-12-22 07:33:46,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2020-12-22 07:33:46,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 750 transitions. [2020-12-22 07:33:46,803 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 750 transitions. Word has length 51 [2020-12-22 07:33:46,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:46,805 INFO L481 AbstractCegarLoop]: Abstraction has 495 states and 750 transitions. [2020-12-22 07:33:46,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:33:46,805 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 750 transitions. [2020-12-22 07:33:46,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 07:33:46,806 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:46,807 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] [2020-12-22 07:33:46,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 07:33:46,807 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:46,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:46,808 INFO L82 PathProgramCache]: Analyzing trace with hash -645243661, now seen corresponding path program 1 times [2020-12-22 07:33:46,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:46,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078444533] [2020-12-22 07:33:46,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:46,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:46,953 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 07:33:46,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078444533] [2020-12-22 07:33:46,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:46,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:33:46,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962221043] [2020-12-22 07:33:46,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:33:46,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:46,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:33:46,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:33:46,957 INFO L87 Difference]: Start difference. First operand 495 states and 750 transitions. Second operand 6 states. [2020-12-22 07:33:47,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:47,324 INFO L93 Difference]: Finished difference Result 4223 states and 6518 transitions. [2020-12-22 07:33:47,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 07:33:47,326 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-12-22 07:33:47,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:47,347 INFO L225 Difference]: With dead ends: 4223 [2020-12-22 07:33:47,348 INFO L226 Difference]: Without dead ends: 3757 [2020-12-22 07:33:47,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:33:47,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3757 states. [2020-12-22 07:33:47,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3757 to 959. [2020-12-22 07:33:47,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 959 states. [2020-12-22 07:33:47,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1438 transitions. [2020-12-22 07:33:47,448 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1438 transitions. Word has length 51 [2020-12-22 07:33:47,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:47,450 INFO L481 AbstractCegarLoop]: Abstraction has 959 states and 1438 transitions. [2020-12-22 07:33:47,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:33:47,450 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1438 transitions. [2020-12-22 07:33:47,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 07:33:47,455 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:47,455 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] [2020-12-22 07:33:47,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 07:33:47,456 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:47,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:47,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1275401347, now seen corresponding path program 1 times [2020-12-22 07:33:47,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:47,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195710996] [2020-12-22 07:33:47,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:47,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:47,535 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 07:33:47,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195710996] [2020-12-22 07:33:47,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:47,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:33:47,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818266666] [2020-12-22 07:33:47,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:33:47,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:47,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:33:47,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:33:47,537 INFO L87 Difference]: Start difference. First operand 959 states and 1438 transitions. Second operand 3 states. [2020-12-22 07:33:47,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:47,618 INFO L93 Difference]: Finished difference Result 2317 states and 3490 transitions. [2020-12-22 07:33:47,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:33:47,619 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-12-22 07:33:47,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:47,627 INFO L225 Difference]: With dead ends: 2317 [2020-12-22 07:33:47,627 INFO L226 Difference]: Without dead ends: 1387 [2020-12-22 07:33:47,629 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 07:33:47,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2020-12-22 07:33:47,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 1385. [2020-12-22 07:33:47,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1385 states. [2020-12-22 07:33:47,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1385 states to 1385 states and 2056 transitions. [2020-12-22 07:33:47,729 INFO L78 Accepts]: Start accepts. Automaton has 1385 states and 2056 transitions. Word has length 53 [2020-12-22 07:33:47,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:47,731 INFO L481 AbstractCegarLoop]: Abstraction has 1385 states and 2056 transitions. [2020-12-22 07:33:47,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:33:47,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1385 states and 2056 transitions. [2020-12-22 07:33:47,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 07:33:47,733 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:47,733 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] [2020-12-22 07:33:47,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 07:33:47,734 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:47,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:47,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1341894859, now seen corresponding path program 1 times [2020-12-22 07:33:47,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:47,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272452627] [2020-12-22 07:33:47,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:47,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:47,956 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 07:33:47,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272452627] [2020-12-22 07:33:47,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:47,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:33:47,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74498764] [2020-12-22 07:33:47,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:33:47,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:47,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:33:47,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:33:47,967 INFO L87 Difference]: Start difference. First operand 1385 states and 2056 transitions. Second operand 6 states. [2020-12-22 07:33:48,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:48,185 INFO L93 Difference]: Finished difference Result 2741 states and 4082 transitions. [2020-12-22 07:33:48,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:33:48,185 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-12-22 07:33:48,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:48,193 INFO L225 Difference]: With dead ends: 2741 [2020-12-22 07:33:48,193 INFO L226 Difference]: Without dead ends: 1387 [2020-12-22 07:33:48,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:33:48,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2020-12-22 07:33:48,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 1385. [2020-12-22 07:33:48,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1385 states. [2020-12-22 07:33:48,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1385 states to 1385 states and 2032 transitions. [2020-12-22 07:33:48,282 INFO L78 Accepts]: Start accepts. Automaton has 1385 states and 2032 transitions. Word has length 53 [2020-12-22 07:33:48,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:48,283 INFO L481 AbstractCegarLoop]: Abstraction has 1385 states and 2032 transitions. [2020-12-22 07:33:48,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:33:48,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1385 states and 2032 transitions. [2020-12-22 07:33:48,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 07:33:48,285 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:48,285 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] [2020-12-22 07:33:48,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 07:33:48,286 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:48,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:48,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1765655459, now seen corresponding path program 1 times [2020-12-22 07:33:48,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:48,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942326791] [2020-12-22 07:33:48,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:48,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:48,409 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 07:33:48,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942326791] [2020-12-22 07:33:48,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:48,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 07:33:48,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781117802] [2020-12-22 07:33:48,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 07:33:48,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:48,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 07:33:48,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:33:48,412 INFO L87 Difference]: Start difference. First operand 1385 states and 2032 transitions. Second operand 8 states. [2020-12-22 07:33:48,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:48,863 INFO L93 Difference]: Finished difference Result 2584 states and 3737 transitions. [2020-12-22 07:33:48,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:33:48,864 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-12-22 07:33:48,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:48,881 INFO L225 Difference]: With dead ends: 2584 [2020-12-22 07:33:48,881 INFO L226 Difference]: Without dead ends: 2582 [2020-12-22 07:33:48,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 07:33:48,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2582 states. [2020-12-22 07:33:49,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2582 to 1481. [2020-12-22 07:33:49,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1481 states. [2020-12-22 07:33:49,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 2120 transitions. [2020-12-22 07:33:49,043 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 2120 transitions. Word has length 54 [2020-12-22 07:33:49,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:49,043 INFO L481 AbstractCegarLoop]: Abstraction has 1481 states and 2120 transitions. [2020-12-22 07:33:49,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 07:33:49,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 2120 transitions. [2020-12-22 07:33:49,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 07:33:49,046 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:49,046 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 07:33:49,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 07:33:49,047 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:49,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:49,048 INFO L82 PathProgramCache]: Analyzing trace with hash -45947538, now seen corresponding path program 1 times [2020-12-22 07:33:49,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:49,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499746965] [2020-12-22 07:33:49,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:49,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:49,202 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 07:33:49,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499746965] [2020-12-22 07:33:49,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:49,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:33:49,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53365066] [2020-12-22 07:33:49,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:33:49,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:49,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:33:49,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:33:49,205 INFO L87 Difference]: Start difference. First operand 1481 states and 2120 transitions. Second operand 6 states. [2020-12-22 07:33:49,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:49,746 INFO L93 Difference]: Finished difference Result 7587 states and 10889 transitions. [2020-12-22 07:33:49,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:33:49,747 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-12-22 07:33:49,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:49,779 INFO L225 Difference]: With dead ends: 7587 [2020-12-22 07:33:49,779 INFO L226 Difference]: Without dead ends: 6137 [2020-12-22 07:33:49,806 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 07:33:49,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6137 states. [2020-12-22 07:33:50,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6137 to 2929. [2020-12-22 07:33:50,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2929 states. [2020-12-22 07:33:50,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2929 states to 2929 states and 4184 transitions. [2020-12-22 07:33:50,077 INFO L78 Accepts]: Start accepts. Automaton has 2929 states and 4184 transitions. Word has length 77 [2020-12-22 07:33:50,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:50,077 INFO L481 AbstractCegarLoop]: Abstraction has 2929 states and 4184 transitions. [2020-12-22 07:33:50,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:33:50,077 INFO L276 IsEmpty]: Start isEmpty. Operand 2929 states and 4184 transitions. [2020-12-22 07:33:50,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 07:33:50,083 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:50,084 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 07:33:50,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 07:33:50,084 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:50,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:50,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1814730354, now seen corresponding path program 1 times [2020-12-22 07:33:50,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:50,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225605184] [2020-12-22 07:33:50,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:50,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:50,175 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 07:33:50,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225605184] [2020-12-22 07:33:50,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:50,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:33:50,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133052909] [2020-12-22 07:33:50,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:33:50,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:50,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:33:50,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:33:50,178 INFO L87 Difference]: Start difference. First operand 2929 states and 4184 transitions. Second operand 6 states. [2020-12-22 07:33:50,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:50,746 INFO L93 Difference]: Finished difference Result 9035 states and 12953 transitions. [2020-12-22 07:33:50,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:33:50,746 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-12-22 07:33:50,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:50,784 INFO L225 Difference]: With dead ends: 9035 [2020-12-22 07:33:50,784 INFO L226 Difference]: Without dead ends: 7585 [2020-12-22 07:33:50,789 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 07:33:50,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7585 states. [2020-12-22 07:33:51,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7585 to 5105. [2020-12-22 07:33:51,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5105 states. [2020-12-22 07:33:51,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5105 states to 5105 states and 7260 transitions. [2020-12-22 07:33:51,228 INFO L78 Accepts]: Start accepts. Automaton has 5105 states and 7260 transitions. Word has length 77 [2020-12-22 07:33:51,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:51,229 INFO L481 AbstractCegarLoop]: Abstraction has 5105 states and 7260 transitions. [2020-12-22 07:33:51,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:33:51,229 INFO L276 IsEmpty]: Start isEmpty. Operand 5105 states and 7260 transitions. [2020-12-22 07:33:51,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 07:33:51,231 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:51,232 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 07:33:51,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 07:33:51,233 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:51,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:51,233 INFO L82 PathProgramCache]: Analyzing trace with hash -683090514, now seen corresponding path program 1 times [2020-12-22 07:33:51,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:51,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720132324] [2020-12-22 07:33:51,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:51,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:51,324 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 07:33:51,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720132324] [2020-12-22 07:33:51,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:51,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:33:51,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808865965] [2020-12-22 07:33:51,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:33:51,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:51,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:33:51,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:33:51,327 INFO L87 Difference]: Start difference. First operand 5105 states and 7260 transitions. Second operand 6 states. [2020-12-22 07:33:52,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:52,086 INFO L93 Difference]: Finished difference Result 10483 states and 15017 transitions. [2020-12-22 07:33:52,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:33:52,086 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-12-22 07:33:52,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:52,131 INFO L225 Difference]: With dead ends: 10483 [2020-12-22 07:33:52,131 INFO L226 Difference]: Without dead ends: 9033 [2020-12-22 07:33:52,140 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 07:33:52,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9033 states. [2020-12-22 07:33:52,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9033 to 6553. [2020-12-22 07:33:52,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6553 states. [2020-12-22 07:33:52,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6553 states to 6553 states and 9324 transitions. [2020-12-22 07:33:52,686 INFO L78 Accepts]: Start accepts. Automaton has 6553 states and 9324 transitions. Word has length 77 [2020-12-22 07:33:52,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:52,692 INFO L481 AbstractCegarLoop]: Abstraction has 6553 states and 9324 transitions. [2020-12-22 07:33:52,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:33:52,693 INFO L276 IsEmpty]: Start isEmpty. Operand 6553 states and 9324 transitions. [2020-12-22 07:33:52,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 07:33:52,697 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:52,697 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 07:33:52,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 07:33:52,698 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:52,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:52,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1918549554, now seen corresponding path program 1 times [2020-12-22 07:33:52,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:52,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364628572] [2020-12-22 07:33:52,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:52,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:52,785 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 07:33:52,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364628572] [2020-12-22 07:33:52,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:52,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:33:52,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606801438] [2020-12-22 07:33:52,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:33:52,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:52,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:33:52,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:33:52,788 INFO L87 Difference]: Start difference. First operand 6553 states and 9324 transitions. Second operand 6 states. [2020-12-22 07:33:53,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:53,507 INFO L93 Difference]: Finished difference Result 11083 states and 15881 transitions. [2020-12-22 07:33:53,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:33:53,507 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-12-22 07:33:53,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:53,528 INFO L225 Difference]: With dead ends: 11083 [2020-12-22 07:33:53,528 INFO L226 Difference]: Without dead ends: 10057 [2020-12-22 07:33:53,533 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 07:33:53,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10057 states. [2020-12-22 07:33:54,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10057 to 7577. [2020-12-22 07:33:54,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7577 states. [2020-12-22 07:33:54,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7577 states to 7577 states and 10796 transitions. [2020-12-22 07:33:54,253 INFO L78 Accepts]: Start accepts. Automaton has 7577 states and 10796 transitions. Word has length 77 [2020-12-22 07:33:54,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:54,254 INFO L481 AbstractCegarLoop]: Abstraction has 7577 states and 10796 transitions. [2020-12-22 07:33:54,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:33:54,254 INFO L276 IsEmpty]: Start isEmpty. Operand 7577 states and 10796 transitions. [2020-12-22 07:33:54,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 07:33:54,257 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:54,257 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 07:33:54,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 07:33:54,258 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:54,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:54,259 INFO L82 PathProgramCache]: Analyzing trace with hash 118065963, now seen corresponding path program 1 times [2020-12-22 07:33:54,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:54,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526962696] [2020-12-22 07:33:54,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:54,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:54,486 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:33:54,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526962696] [2020-12-22 07:33:54,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472366336] [2020-12-22 07:33:54,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:33:54,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:54,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 07:33:54,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:33:55,045 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 07:33:55,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:33:55,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 12 [2020-12-22 07:33:55,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802684874] [2020-12-22 07:33:55,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 07:33:55,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:55,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 07:33:55,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-12-22 07:33:55,050 INFO L87 Difference]: Start difference. First operand 7577 states and 10796 transitions. Second operand 12 states. [2020-12-22 07:34:00,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:34:00,371 INFO L93 Difference]: Finished difference Result 45575 states and 64563 transitions. [2020-12-22 07:34:00,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-12-22 07:34:00,372 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 78 [2020-12-22 07:34:00,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:34:00,457 INFO L225 Difference]: With dead ends: 45575 [2020-12-22 07:34:00,457 INFO L226 Difference]: Without dead ends: 39941 [2020-12-22 07:34:00,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=440, Invalid=1816, Unknown=0, NotChecked=0, Total=2256 [2020-12-22 07:34:00,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39941 states. [2020-12-22 07:34:02,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39941 to 25985. [2020-12-22 07:34:02,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25985 states. [2020-12-22 07:34:02,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25985 states to 25985 states and 36460 transitions. [2020-12-22 07:34:02,772 INFO L78 Accepts]: Start accepts. Automaton has 25985 states and 36460 transitions. Word has length 78 [2020-12-22 07:34:02,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:34:02,773 INFO L481 AbstractCegarLoop]: Abstraction has 25985 states and 36460 transitions. [2020-12-22 07:34:02,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 07:34:02,773 INFO L276 IsEmpty]: Start isEmpty. Operand 25985 states and 36460 transitions. [2020-12-22 07:34:02,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 07:34:02,777 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:34:02,777 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 07:34:02,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 07:34:02,991 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:34:02,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:34:02,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1760611046, now seen corresponding path program 1 times [2020-12-22 07:34:02,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:34:02,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176215938] [2020-12-22 07:34:02,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:34:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:03,210 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:34:03,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176215938] [2020-12-22 07:34:03,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434284311] [2020-12-22 07:34:03,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:34:03,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:03,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 07:34:03,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:34:03,550 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 07:34:03,930 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:34:03,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:34:03,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-22 07:34:03,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110566132] [2020-12-22 07:34:03,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 07:34:03,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:34:03,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 07:34:03,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-12-22 07:34:03,932 INFO L87 Difference]: Start difference. First operand 25985 states and 36460 transitions. Second operand 17 states. [2020-12-22 07:34:15,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:34:15,590 INFO L93 Difference]: Finished difference Result 163251 states and 226806 transitions. [2020-12-22 07:34:15,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-22 07:34:15,590 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 79 [2020-12-22 07:34:15,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:34:15,931 INFO L225 Difference]: With dead ends: 163251 [2020-12-22 07:34:15,931 INFO L226 Difference]: Without dead ends: 137297 [2020-12-22 07:34:16,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=615, Invalid=1737, Unknown=0, NotChecked=0, Total=2352 [2020-12-22 07:34:16,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137297 states. [2020-12-22 07:34:21,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137297 to 62377. [2020-12-22 07:34:21,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62377 states. [2020-12-22 07:34:22,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62377 states to 62377 states and 87195 transitions. [2020-12-22 07:34:22,086 INFO L78 Accepts]: Start accepts. Automaton has 62377 states and 87195 transitions. Word has length 79 [2020-12-22 07:34:22,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:34:22,086 INFO L481 AbstractCegarLoop]: Abstraction has 62377 states and 87195 transitions. [2020-12-22 07:34:22,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 07:34:22,086 INFO L276 IsEmpty]: Start isEmpty. Operand 62377 states and 87195 transitions. [2020-12-22 07:34:22,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 07:34:22,091 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:34:22,091 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 07:34:22,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 07:34:22,292 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:34:22,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:34:22,293 INFO L82 PathProgramCache]: Analyzing trace with hash -261362024, now seen corresponding path program 1 times [2020-12-22 07:34:22,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:34:22,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698444279] [2020-12-22 07:34:22,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:34:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:22,489 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:34:22,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698444279] [2020-12-22 07:34:22,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921376458] [2020-12-22 07:34:22,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:34:22,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:22,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 07:34:22,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:34:22,940 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2020-12-22 07:34:23,486 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 07:34:23,506 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 07:34:23,665 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:23,915 INFO L757 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:24,178 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 46 disjuncts [2020-12-22 07:34:24,423 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:25,648 INFO L757 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:27,437 INFO L757 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:29,310 INFO L757 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:31,374 INFO L757 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:34,059 INFO L757 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:37,010 INFO L757 QuantifierPusher]: Run 70 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:40,366 INFO L757 QuantifierPusher]: Run 80 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:44,272 INFO L757 QuantifierPusher]: Run 90 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:49,283 INFO L757 QuantifierPusher]: Run 100 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:55,604 INFO L757 QuantifierPusher]: Run 110 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:35:02,673 INFO L757 QuantifierPusher]: Run 120 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:35:10,612 INFO L757 QuantifierPusher]: Run 130 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:35:19,281 INFO L757 QuantifierPusher]: Run 140 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:35:30,183 INFO L757 QuantifierPusher]: Run 150 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:35:41,603 INFO L757 QuantifierPusher]: Run 160 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:35:53,775 INFO L757 QuantifierPusher]: Run 170 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:36:08,334 INFO L757 QuantifierPusher]: Run 180 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:36:24,321 INFO L757 QuantifierPusher]: Run 190 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:36:42,313 INFO L757 QuantifierPusher]: Run 200 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:37:01,657 INFO L757 QuantifierPusher]: Run 210 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:37:22,340 INFO L757 QuantifierPusher]: Run 220 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:37:45,014 INFO L757 QuantifierPusher]: Run 230 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug.