/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.3.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 07:31:31,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 07:31:31,088 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 07:31:31,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 07:31:31,157 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 07:31:31,159 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 07:31:31,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 07:31:31,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 07:31:31,162 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 07:31:31,164 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 07:31:31,166 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 07:31:31,168 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 07:31:31,170 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 07:31:31,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 07:31:31,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 07:31:31,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 07:31:31,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 07:31:31,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 07:31:31,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 07:31:31,190 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 07:31:31,192 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 07:31:31,219 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 07:31:31,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 07:31:31,221 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 07:31:31,222 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 07:31:31,222 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 07:31:31,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 07:31:31,223 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 07:31:31,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 07:31:31,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 07:31:31,224 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 07:31:31,224 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 07:31:31,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 07:31:31,225 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 07:31:31,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 07:31:31,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 07:31:31,226 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 07:31:31,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 07:31:31,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:31:31,227 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 07:31:31,227 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 07:31:31,227 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 07:31:31,228 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 07:31:31,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 07:31:31,228 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 07:31:31,229 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 07:31:31,229 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 07:31:31,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 07:31:31,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 07:31:31,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 07:31:31,699 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 07:31:31,700 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 07:31:31,701 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c [2020-12-22 07:31:31,781 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a679ddb5/9d1d01379b8243138d615d2818b6160d/FLAG523e79f40 [2020-12-22 07:31:32,430 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 07:31:32,430 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c [2020-12-22 07:31:32,446 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a679ddb5/9d1d01379b8243138d615d2818b6160d/FLAG523e79f40 [2020-12-22 07:31:32,734 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a679ddb5/9d1d01379b8243138d615d2818b6160d [2020-12-22 07:31:32,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 07:31:32,742 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 07:31:32,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 07:31:32,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 07:31:32,757 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 07:31:32,758 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:31:32" (1/1) ... [2020-12-22 07:31:32,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ed1aaae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:31:32, skipping insertion in model container [2020-12-22 07:31:32,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:31:32" (1/1) ... [2020-12-22 07:31:32,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 07:31:32,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 07:31:33,018 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.3.ufo.BOUNDED-6.pals.c[5947,5960] [2020-12-22 07:31:33,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:31:33,036 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 07:31:33,080 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.3.ufo.BOUNDED-6.pals.c[5947,5960] [2020-12-22 07:31:33,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:31:33,101 INFO L208 MainTranslator]: Completed translation [2020-12-22 07:31:33,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:31:33 WrapperNode [2020-12-22 07:31:33,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 07:31:33,103 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 07:31:33,103 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 07:31:33,103 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 07:31:33,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:31:33" (1/1) ... [2020-12-22 07:31:33,123 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:31:33" (1/1) ... [2020-12-22 07:31:33,152 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 07:31:33,153 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 07:31:33,153 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 07:31:33,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 07:31:33,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:31:33" (1/1) ... [2020-12-22 07:31:33,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:31:33" (1/1) ... [2020-12-22 07:31:33,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:31:33" (1/1) ... [2020-12-22 07:31:33,171 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:31:33" (1/1) ... [2020-12-22 07:31:33,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:31:33" (1/1) ... [2020-12-22 07:31:33,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:31:33" (1/1) ... [2020-12-22 07:31:33,186 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:31:33" (1/1) ... [2020-12-22 07:31:33,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 07:31:33,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 07:31:33,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 07:31:33,191 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 07:31:33,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:31:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:31:33,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 07:31:33,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 07:31:33,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 07:31:33,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 07:31:34,160 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 07:31:34,161 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-22 07:31:34,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:31:34 BoogieIcfgContainer [2020-12-22 07:31:34,163 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 07:31:34,165 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 07:31:34,165 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 07:31:34,168 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 07:31:34,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:31:32" (1/3) ... [2020-12-22 07:31:34,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f4a8e86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:31:34, skipping insertion in model container [2020-12-22 07:31:34,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:31:33" (2/3) ... [2020-12-22 07:31:34,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f4a8e86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:31:34, skipping insertion in model container [2020-12-22 07:31:34,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:31:34" (3/3) ... [2020-12-22 07:31:34,172 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals.c [2020-12-22 07:31:34,179 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 07:31:34,185 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 07:31:34,204 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 07:31:34,232 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 07:31:34,232 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 07:31:34,232 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 07:31:34,232 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 07:31:34,233 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 07:31:34,233 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 07:31:34,233 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 07:31:34,233 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 07:31:34,249 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-12-22 07:31:34,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 07:31:34,257 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:31:34,257 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] [2020-12-22 07:31:34,258 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:31:34,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:31:34,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1133243219, now seen corresponding path program 1 times [2020-12-22 07:31:34,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:31:34,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796070099] [2020-12-22 07:31:34,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:31:34,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:31:34,479 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 07:31:34,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796070099] [2020-12-22 07:31:34,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:31:34,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 07:31:34,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885998871] [2020-12-22 07:31:34,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 07:31:34,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:31:34,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 07:31:34,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 07:31:34,511 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 2 states. [2020-12-22 07:31:34,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:31:34,551 INFO L93 Difference]: Finished difference Result 103 states and 164 transitions. [2020-12-22 07:31:34,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 07:31:34,553 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2020-12-22 07:31:34,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:31:34,580 INFO L225 Difference]: With dead ends: 103 [2020-12-22 07:31:34,580 INFO L226 Difference]: Without dead ends: 58 [2020-12-22 07:31:34,583 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 07:31:34,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-22 07:31:34,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-12-22 07:31:34,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-22 07:31:34,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 94 transitions. [2020-12-22 07:31:34,624 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 94 transitions. Word has length 25 [2020-12-22 07:31:34,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:31:34,625 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 94 transitions. [2020-12-22 07:31:34,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 07:31:34,625 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 94 transitions. [2020-12-22 07:31:34,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 07:31:34,626 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:31:34,627 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] [2020-12-22 07:31:34,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 07:31:34,627 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:31:34,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:31:34,628 INFO L82 PathProgramCache]: Analyzing trace with hash 315594769, now seen corresponding path program 1 times [2020-12-22 07:31:34,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:31:34,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703709009] [2020-12-22 07:31:34,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:31:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:31:34,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:31:34,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703709009] [2020-12-22 07:31:34,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:31:34,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:31:34,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996776567] [2020-12-22 07:31:34,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:31:34,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:31:34,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:31:34,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:31:34,751 INFO L87 Difference]: Start difference. First operand 58 states and 94 transitions. Second operand 5 states. [2020-12-22 07:31:34,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:31:34,884 INFO L93 Difference]: Finished difference Result 134 states and 210 transitions. [2020-12-22 07:31:34,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:31:34,885 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-12-22 07:31:34,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:31:34,887 INFO L225 Difference]: With dead ends: 134 [2020-12-22 07:31:34,887 INFO L226 Difference]: Without dead ends: 94 [2020-12-22 07:31:34,889 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 07:31:34,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-12-22 07:31:34,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 58. [2020-12-22 07:31:34,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-22 07:31:34,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 78 transitions. [2020-12-22 07:31:34,900 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 78 transitions. Word has length 25 [2020-12-22 07:31:34,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:31:34,901 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 78 transitions. [2020-12-22 07:31:34,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:31:34,901 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 78 transitions. [2020-12-22 07:31:34,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 07:31:34,903 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:31:34,903 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] [2020-12-22 07:31:34,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 07:31:34,904 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:31:34,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:31:34,905 INFO L82 PathProgramCache]: Analyzing trace with hash -278543826, now seen corresponding path program 1 times [2020-12-22 07:31:34,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:31:34,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403039559] [2020-12-22 07:31:34,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:31:34,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:31:35,087 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 07:31:35,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403039559] [2020-12-22 07:31:35,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:31:35,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:31:35,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231402844] [2020-12-22 07:31:35,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:31:35,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:31:35,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:31:35,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:31:35,091 INFO L87 Difference]: Start difference. First operand 58 states and 78 transitions. Second operand 3 states. [2020-12-22 07:31:35,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:31:35,145 INFO L93 Difference]: Finished difference Result 124 states and 180 transitions. [2020-12-22 07:31:35,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:31:35,149 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-12-22 07:31:35,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:31:35,151 INFO L225 Difference]: With dead ends: 124 [2020-12-22 07:31:35,152 INFO L226 Difference]: Without dead ends: 88 [2020-12-22 07:31:35,154 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 07:31:35,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-12-22 07:31:35,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-12-22 07:31:35,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-22 07:31:35,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 122 transitions. [2020-12-22 07:31:35,179 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 122 transitions. Word has length 40 [2020-12-22 07:31:35,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:31:35,179 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 122 transitions. [2020-12-22 07:31:35,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:31:35,180 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 122 transitions. [2020-12-22 07:31:35,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 07:31:35,183 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:31:35,184 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] [2020-12-22 07:31:35,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 07:31:35,185 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:31:35,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:31:35,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1401070434, now seen corresponding path program 1 times [2020-12-22 07:31:35,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:31:35,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183877670] [2020-12-22 07:31:35,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:31:35,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:31:35,301 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 07:31:35,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183877670] [2020-12-22 07:31:35,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:31:35,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:31:35,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180443766] [2020-12-22 07:31:35,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:31:35,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:31:35,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:31:35,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:31:35,304 INFO L87 Difference]: Start difference. First operand 86 states and 122 transitions. Second operand 3 states. [2020-12-22 07:31:35,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:31:35,335 INFO L93 Difference]: Finished difference Result 202 states and 302 transitions. [2020-12-22 07:31:35,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:31:35,336 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-12-22 07:31:35,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:31:35,338 INFO L225 Difference]: With dead ends: 202 [2020-12-22 07:31:35,338 INFO L226 Difference]: Without dead ends: 138 [2020-12-22 07:31:35,339 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 07:31:35,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-12-22 07:31:35,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2020-12-22 07:31:35,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-12-22 07:31:35,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 199 transitions. [2020-12-22 07:31:35,360 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 199 transitions. Word has length 40 [2020-12-22 07:31:35,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:31:35,361 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 199 transitions. [2020-12-22 07:31:35,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:31:35,361 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 199 transitions. [2020-12-22 07:31:35,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 07:31:35,364 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:31:35,364 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] [2020-12-22 07:31:35,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 07:31:35,365 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:31:35,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:31:35,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1738863576, now seen corresponding path program 1 times [2020-12-22 07:31:35,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:31:35,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268506540] [2020-12-22 07:31:35,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:31:35,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:31:35,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:31:35,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268506540] [2020-12-22 07:31:35,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:31:35,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:31:35,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824059362] [2020-12-22 07:31:35,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:31:35,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:31:35,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:31:35,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:31:35,511 INFO L87 Difference]: Start difference. First operand 136 states and 199 transitions. Second operand 3 states. [2020-12-22 07:31:35,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:31:35,567 INFO L93 Difference]: Finished difference Result 340 states and 513 transitions. [2020-12-22 07:31:35,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:31:35,567 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-12-22 07:31:35,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:31:35,570 INFO L225 Difference]: With dead ends: 340 [2020-12-22 07:31:35,570 INFO L226 Difference]: Without dead ends: 226 [2020-12-22 07:31:35,572 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 07:31:35,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-12-22 07:31:35,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 224. [2020-12-22 07:31:35,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-12-22 07:31:35,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 331 transitions. [2020-12-22 07:31:35,597 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 331 transitions. Word has length 40 [2020-12-22 07:31:35,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:31:35,597 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 331 transitions. [2020-12-22 07:31:35,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:31:35,598 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 331 transitions. [2020-12-22 07:31:35,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 07:31:35,599 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:31:35,599 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] [2020-12-22 07:31:35,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 07:31:35,599 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:31:35,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:31:35,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1338118322, now seen corresponding path program 1 times [2020-12-22 07:31:35,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:31:35,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514728578] [2020-12-22 07:31:35,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:31:35,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:31:35,723 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 07:31:35,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514728578] [2020-12-22 07:31:35,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:31:35,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:31:35,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682588316] [2020-12-22 07:31:35,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:31:35,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:31:35,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:31:35,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:31:35,729 INFO L87 Difference]: Start difference. First operand 224 states and 331 transitions. Second operand 6 states. [2020-12-22 07:31:35,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:31:35,970 INFO L93 Difference]: Finished difference Result 426 states and 640 transitions. [2020-12-22 07:31:35,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:31:35,971 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-12-22 07:31:35,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:31:35,973 INFO L225 Difference]: With dead ends: 426 [2020-12-22 07:31:35,974 INFO L226 Difference]: Without dead ends: 224 [2020-12-22 07:31:35,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 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 07:31:35,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-12-22 07:31:36,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2020-12-22 07:31:36,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-12-22 07:31:36,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 327 transitions. [2020-12-22 07:31:36,032 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 327 transitions. Word has length 40 [2020-12-22 07:31:36,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:31:36,033 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 327 transitions. [2020-12-22 07:31:36,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:31:36,033 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 327 transitions. [2020-12-22 07:31:36,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 07:31:36,035 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:31:36,037 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] [2020-12-22 07:31:36,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 07:31:36,038 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:31:36,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:31:36,038 INFO L82 PathProgramCache]: Analyzing trace with hash -317049968, now seen corresponding path program 1 times [2020-12-22 07:31:36,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:31:36,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779019974] [2020-12-22 07:31:36,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:31:36,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:31:36,131 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 07:31:36,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779019974] [2020-12-22 07:31:36,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:31:36,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:31:36,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607052937] [2020-12-22 07:31:36,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:31:36,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:31:36,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:31:36,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:31:36,134 INFO L87 Difference]: Start difference. First operand 224 states and 327 transitions. Second operand 5 states. [2020-12-22 07:31:36,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:31:36,340 INFO L93 Difference]: Finished difference Result 1234 states and 1852 transitions. [2020-12-22 07:31:36,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:31:36,344 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-12-22 07:31:36,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:31:36,353 INFO L225 Difference]: With dead ends: 1234 [2020-12-22 07:31:36,354 INFO L226 Difference]: Without dead ends: 1032 [2020-12-22 07:31:36,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:31:36,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2020-12-22 07:31:36,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 424. [2020-12-22 07:31:36,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2020-12-22 07:31:36,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 615 transitions. [2020-12-22 07:31:36,413 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 615 transitions. Word has length 40 [2020-12-22 07:31:36,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:31:36,414 INFO L481 AbstractCegarLoop]: Abstraction has 424 states and 615 transitions. [2020-12-22 07:31:36,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:31:36,415 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 615 transitions. [2020-12-22 07:31:36,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 07:31:36,415 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:31:36,416 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] [2020-12-22 07:31:36,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 07:31:36,416 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:31:36,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:31:36,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1091548472, now seen corresponding path program 1 times [2020-12-22 07:31:36,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:31:36,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070517294] [2020-12-22 07:31:36,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:31:36,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:31:36,641 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 07:31:36,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070517294] [2020-12-22 07:31:36,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:31:36,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:31:36,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885455164] [2020-12-22 07:31:36,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:31:36,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:31:36,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:31:36,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:31:36,645 INFO L87 Difference]: Start difference. First operand 424 states and 615 transitions. Second operand 5 states. [2020-12-22 07:31:36,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:31:36,745 INFO L93 Difference]: Finished difference Result 1030 states and 1514 transitions. [2020-12-22 07:31:36,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:31:36,746 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-12-22 07:31:36,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:31:36,750 INFO L225 Difference]: With dead ends: 1030 [2020-12-22 07:31:36,750 INFO L226 Difference]: Without dead ends: 628 [2020-12-22 07:31:36,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:31:36,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-12-22 07:31:36,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 424. [2020-12-22 07:31:36,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2020-12-22 07:31:36,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 607 transitions. [2020-12-22 07:31:36,789 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 607 transitions. Word has length 42 [2020-12-22 07:31:36,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:31:36,790 INFO L481 AbstractCegarLoop]: Abstraction has 424 states and 607 transitions. [2020-12-22 07:31:36,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:31:36,790 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 607 transitions. [2020-12-22 07:31:36,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 07:31:36,791 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:31:36,791 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] [2020-12-22 07:31:36,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 07:31:36,791 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:31:36,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:31:36,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1158041984, now seen corresponding path program 1 times [2020-12-22 07:31:36,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:31:36,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164224769] [2020-12-22 07:31:36,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:31:36,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:31:36,851 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 07:31:36,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164224769] [2020-12-22 07:31:36,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:31:36,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:31:36,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823055469] [2020-12-22 07:31:36,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:31:36,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:31:36,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:31:36,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:31:36,854 INFO L87 Difference]: Start difference. First operand 424 states and 607 transitions. Second operand 3 states. [2020-12-22 07:31:36,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:31:36,914 INFO L93 Difference]: Finished difference Result 1010 states and 1451 transitions. [2020-12-22 07:31:36,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:31:36,915 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2020-12-22 07:31:36,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:31:36,919 INFO L225 Difference]: With dead ends: 1010 [2020-12-22 07:31:36,919 INFO L226 Difference]: Without dead ends: 608 [2020-12-22 07:31:36,920 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 07:31:36,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2020-12-22 07:31:36,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 606. [2020-12-22 07:31:36,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 606 states. [2020-12-22 07:31:36,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 853 transitions. [2020-12-22 07:31:36,967 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 853 transitions. Word has length 42 [2020-12-22 07:31:36,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:31:36,968 INFO L481 AbstractCegarLoop]: Abstraction has 606 states and 853 transitions. [2020-12-22 07:31:36,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:31:36,968 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 853 transitions. [2020-12-22 07:31:36,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 07:31:36,969 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:31:36,969 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] [2020-12-22 07:31:36,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 07:31:36,969 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:31:36,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:31:36,970 INFO L82 PathProgramCache]: Analyzing trace with hash 107012533, now seen corresponding path program 1 times [2020-12-22 07:31:36,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:31:36,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261176022] [2020-12-22 07:31:36,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:31:36,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:31:37,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:31:37,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261176022] [2020-12-22 07:31:37,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:31:37,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:31:37,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043792831] [2020-12-22 07:31:37,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:31:37,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:31:37,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:31:37,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:31:37,047 INFO L87 Difference]: Start difference. First operand 606 states and 853 transitions. Second operand 5 states. [2020-12-22 07:31:37,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:31:37,196 INFO L93 Difference]: Finished difference Result 1129 states and 1572 transitions. [2020-12-22 07:31:37,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 07:31:37,197 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-12-22 07:31:37,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:31:37,204 INFO L225 Difference]: With dead ends: 1129 [2020-12-22 07:31:37,204 INFO L226 Difference]: Without dead ends: 1127 [2020-12-22 07:31:37,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:31:37,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2020-12-22 07:31:37,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 654. [2020-12-22 07:31:37,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 654 states. [2020-12-22 07:31:37,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 897 transitions. [2020-12-22 07:31:37,291 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 897 transitions. Word has length 43 [2020-12-22 07:31:37,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:31:37,291 INFO L481 AbstractCegarLoop]: Abstraction has 654 states and 897 transitions. [2020-12-22 07:31:37,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:31:37,292 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 897 transitions. [2020-12-22 07:31:37,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 07:31:37,294 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:31:37,294 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 07:31:37,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 07:31:37,295 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:31:37,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:31:37,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1027002802, now seen corresponding path program 1 times [2020-12-22 07:31:37,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:31:37,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275162070] [2020-12-22 07:31:37,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:31:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:31:37,375 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 07:31:37,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275162070] [2020-12-22 07:31:37,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:31:37,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:31:37,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013647347] [2020-12-22 07:31:37,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:31:37,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:31:37,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:31:37,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:31:37,378 INFO L87 Difference]: Start difference. First operand 654 states and 897 transitions. Second operand 5 states. [2020-12-22 07:31:37,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:31:37,637 INFO L93 Difference]: Finished difference Result 2682 states and 3697 transitions. [2020-12-22 07:31:37,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:31:37,638 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-12-22 07:31:37,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:31:37,649 INFO L225 Difference]: With dead ends: 2682 [2020-12-22 07:31:37,649 INFO L226 Difference]: Without dead ends: 2052 [2020-12-22 07:31:37,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:31:37,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2052 states. [2020-12-22 07:31:37,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2052 to 1282. [2020-12-22 07:31:37,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1282 states. [2020-12-22 07:31:37,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1757 transitions. [2020-12-22 07:31:37,787 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 1757 transitions. Word has length 63 [2020-12-22 07:31:37,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:31:37,787 INFO L481 AbstractCegarLoop]: Abstraction has 1282 states and 1757 transitions. [2020-12-22 07:31:37,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:31:37,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 1757 transitions. [2020-12-22 07:31:37,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 07:31:37,789 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:31:37,789 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 07:31:37,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 07:31:37,790 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:31:37,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:31:37,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1499181678, now seen corresponding path program 1 times [2020-12-22 07:31:37,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:31:37,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079210815] [2020-12-22 07:31:37,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:31:37,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:31:37,954 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 07:31:37,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079210815] [2020-12-22 07:31:37,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:31:37,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:31:37,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955459308] [2020-12-22 07:31:37,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:31:37,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:31:37,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:31:37,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:31:37,957 INFO L87 Difference]: Start difference. First operand 1282 states and 1757 transitions. Second operand 5 states. [2020-12-22 07:31:38,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:31:38,232 INFO L93 Difference]: Finished difference Result 3310 states and 4557 transitions. [2020-12-22 07:31:38,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:31:38,233 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-12-22 07:31:38,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:31:38,249 INFO L225 Difference]: With dead ends: 3310 [2020-12-22 07:31:38,249 INFO L226 Difference]: Without dead ends: 2680 [2020-12-22 07:31:38,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:31:38,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2020-12-22 07:31:38,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 2226. [2020-12-22 07:31:38,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2226 states. [2020-12-22 07:31:38,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2226 states to 2226 states and 3037 transitions. [2020-12-22 07:31:38,507 INFO L78 Accepts]: Start accepts. Automaton has 2226 states and 3037 transitions. Word has length 63 [2020-12-22 07:31:38,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:31:38,508 INFO L481 AbstractCegarLoop]: Abstraction has 2226 states and 3037 transitions. [2020-12-22 07:31:38,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:31:38,508 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states and 3037 transitions. [2020-12-22 07:31:38,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 07:31:38,511 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:31:38,511 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 07:31:38,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 07:31:38,511 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:31:38,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:31:38,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1664145778, now seen corresponding path program 1 times [2020-12-22 07:31:38,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:31:38,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585775478] [2020-12-22 07:31:38,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:31:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:31:38,629 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 07:31:38,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585775478] [2020-12-22 07:31:38,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:31:38,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:31:38,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618755659] [2020-12-22 07:31:38,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:31:38,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:31:38,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:31:38,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:31:38,633 INFO L87 Difference]: Start difference. First operand 2226 states and 3037 transitions. Second operand 5 states. [2020-12-22 07:31:38,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:31:38,956 INFO L93 Difference]: Finished difference Result 3758 states and 5177 transitions. [2020-12-22 07:31:38,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:31:38,957 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-12-22 07:31:38,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:31:38,975 INFO L225 Difference]: With dead ends: 3758 [2020-12-22 07:31:38,976 INFO L226 Difference]: Without dead ends: 3308 [2020-12-22 07:31:38,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:31:38,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3308 states. [2020-12-22 07:31:39,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3308 to 2674. [2020-12-22 07:31:39,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2674 states. [2020-12-22 07:31:39,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 3661 transitions. [2020-12-22 07:31:39,279 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 3661 transitions. Word has length 63 [2020-12-22 07:31:39,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:31:39,281 INFO L481 AbstractCegarLoop]: Abstraction has 2674 states and 3661 transitions. [2020-12-22 07:31:39,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:31:39,281 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 3661 transitions. [2020-12-22 07:31:39,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 07:31:39,285 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:31:39,286 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] [2020-12-22 07:31:39,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 07:31:39,286 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:31:39,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:31:39,287 INFO L82 PathProgramCache]: Analyzing trace with hash -229876224, now seen corresponding path program 1 times [2020-12-22 07:31:39,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:31:39,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996805624] [2020-12-22 07:31:39,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:31:39,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:31:39,388 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 07:31:39,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996805624] [2020-12-22 07:31:39,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232642651] [2020-12-22 07:31:39,389 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 07:31:39,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:31:39,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 07:31:39,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:31:39,664 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 07:31:39,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:31:39,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6] total 7 [2020-12-22 07:31:39,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77244473] [2020-12-22 07:31:39,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:31:39,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:31:39,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:31:39,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:31:39,667 INFO L87 Difference]: Start difference. First operand 2674 states and 3661 transitions. Second operand 7 states. [2020-12-22 07:31:40,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:31:40,254 INFO L93 Difference]: Finished difference Result 6353 states and 8781 transitions. [2020-12-22 07:31:40,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:31:40,255 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-12-22 07:31:40,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:31:40,277 INFO L225 Difference]: With dead ends: 6353 [2020-12-22 07:31:40,277 INFO L226 Difference]: Without dead ends: 4335 [2020-12-22 07:31:40,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:31:40,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4335 states. [2020-12-22 07:31:40,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4335 to 4286. [2020-12-22 07:31:40,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4286 states. [2020-12-22 07:31:40,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4286 states to 4286 states and 5805 transitions. [2020-12-22 07:31:40,724 INFO L78 Accepts]: Start accepts. Automaton has 4286 states and 5805 transitions. Word has length 64 [2020-12-22 07:31:40,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:31:40,724 INFO L481 AbstractCegarLoop]: Abstraction has 4286 states and 5805 transitions. [2020-12-22 07:31:40,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:31:40,724 INFO L276 IsEmpty]: Start isEmpty. Operand 4286 states and 5805 transitions. [2020-12-22 07:31:40,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 07:31:40,726 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:31:40,726 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] [2020-12-22 07:31:40,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 07:31:40,940 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:31:40,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:31:40,940 INFO L82 PathProgramCache]: Analyzing trace with hash -456421882, now seen corresponding path program 1 times [2020-12-22 07:31:40,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:31:40,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503707200] [2020-12-22 07:31:40,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:31:40,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:31:41,148 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 07:31:41,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503707200] [2020-12-22 07:31:41,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042649523] [2020-12-22 07:31:41,149 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 07:31:41,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:31:41,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 07:31:41,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:31:41,460 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 07:31:41,842 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 07:31:41,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:31:41,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-22 07:31:41,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433044227] [2020-12-22 07:31:41,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 07:31:41,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:31:41,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 07:31:41,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-12-22 07:31:41,848 INFO L87 Difference]: Start difference. First operand 4286 states and 5805 transitions. Second operand 17 states. [2020-12-22 07:31:44,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:31:44,387 INFO L93 Difference]: Finished difference Result 16283 states and 21903 transitions. [2020-12-22 07:31:44,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-22 07:31:44,388 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 65 [2020-12-22 07:31:44,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:31:44,453 INFO L225 Difference]: With dead ends: 16283 [2020-12-22 07:31:44,453 INFO L226 Difference]: Without dead ends: 12021 [2020-12-22 07:31:44,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=434, Invalid=1206, Unknown=0, NotChecked=0, Total=1640 [2020-12-22 07:31:44,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12021 states. [2020-12-22 07:31:45,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12021 to 7790. [2020-12-22 07:31:45,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7790 states. [2020-12-22 07:31:45,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7790 states to 7790 states and 10457 transitions. [2020-12-22 07:31:45,366 INFO L78 Accepts]: Start accepts. Automaton has 7790 states and 10457 transitions. Word has length 65 [2020-12-22 07:31:45,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:31:45,367 INFO L481 AbstractCegarLoop]: Abstraction has 7790 states and 10457 transitions. [2020-12-22 07:31:45,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 07:31:45,367 INFO L276 IsEmpty]: Start isEmpty. Operand 7790 states and 10457 transitions. [2020-12-22 07:31:45,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 07:31:45,369 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:31:45,369 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] [2020-12-22 07:31:45,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 07:31:45,583 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:31:45,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:31:45,585 INFO L82 PathProgramCache]: Analyzing trace with hash 550341158, now seen corresponding path program 1 times [2020-12-22 07:31:45,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:31:45,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289486749] [2020-12-22 07:31:45,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:31:45,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:31:45,783 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:31:45,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289486749] [2020-12-22 07:31:45,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122488031] [2020-12-22 07:31:45,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 07:31:45,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:31:45,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 07:31:45,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:31:46,046 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 07:31:46,427 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:31:46,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:31:46,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-22 07:31:46,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910084066] [2020-12-22 07:31:46,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 07:31:46,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:31:46,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 07:31:46,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-12-22 07:31:46,431 INFO L87 Difference]: Start difference. First operand 7790 states and 10457 transitions. Second operand 17 states. [2020-12-22 07:31:49,649 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2020-12-22 07:31:50,079 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2020-12-22 07:31:50,495 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2020-12-22 07:31:50,957 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2020-12-22 07:31:54,942 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-12-22 07:32:04,592 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2020-12-22 07:32:05,765 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2020-12-22 07:32:11,319 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2020-12-22 07:32:11,774 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2020-12-22 07:32:15,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:32:15,235 INFO L93 Difference]: Finished difference Result 157983 states and 209246 transitions. [2020-12-22 07:32:15,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2020-12-22 07:32:15,236 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 65 [2020-12-22 07:32:15,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:32:15,690 INFO L225 Difference]: With dead ends: 157983 [2020-12-22 07:32:15,690 INFO L226 Difference]: Without dead ends: 150217 [2020-12-22 07:32:15,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20542 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=5056, Invalid=42686, Unknown=0, NotChecked=0, Total=47742 [2020-12-22 07:32:15,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150217 states. [2020-12-22 07:32:21,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150217 to 41241. [2020-12-22 07:32:21,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41241 states. [2020-12-22 07:32:21,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41241 states to 41241 states and 55254 transitions. [2020-12-22 07:32:21,722 INFO L78 Accepts]: Start accepts. Automaton has 41241 states and 55254 transitions. Word has length 65 [2020-12-22 07:32:21,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:32:21,722 INFO L481 AbstractCegarLoop]: Abstraction has 41241 states and 55254 transitions. [2020-12-22 07:32:21,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 07:32:21,722 INFO L276 IsEmpty]: Start isEmpty. Operand 41241 states and 55254 transitions. [2020-12-22 07:32:21,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 07:32:21,725 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:32:21,725 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] [2020-12-22 07:32:21,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 07:32:21,936 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:32:21,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:32:21,938 INFO L82 PathProgramCache]: Analyzing trace with hash 625513838, now seen corresponding path program 1 times [2020-12-22 07:32:21,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:32:21,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464936562] [2020-12-22 07:32:21,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:32:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:32:21,998 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:32:21,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464936562] [2020-12-22 07:32:22,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:32:22,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:32:22,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637243801] [2020-12-22 07:32:22,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:32:22,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:32:22,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:32:22,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:32:22,003 INFO L87 Difference]: Start difference. First operand 41241 states and 55254 transitions. Second operand 3 states. [2020-12-22 07:32:25,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:32:25,803 INFO L93 Difference]: Finished difference Result 82460 states and 110485 transitions. [2020-12-22 07:32:25,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:32:25,803 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-22 07:32:25,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:32:26,014 INFO L225 Difference]: With dead ends: 82460 [2020-12-22 07:32:26,014 INFO L226 Difference]: Without dead ends: 41243 [2020-12-22 07:32:26,060 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 07:32:26,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41243 states. [2020-12-22 07:32:30,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41243 to 40353. [2020-12-22 07:32:30,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40353 states. [2020-12-22 07:32:30,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40353 states to 40353 states and 53034 transitions. [2020-12-22 07:32:30,092 INFO L78 Accepts]: Start accepts. Automaton has 40353 states and 53034 transitions. Word has length 65 [2020-12-22 07:32:30,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:32:30,092 INFO L481 AbstractCegarLoop]: Abstraction has 40353 states and 53034 transitions. [2020-12-22 07:32:30,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:32:30,093 INFO L276 IsEmpty]: Start isEmpty. Operand 40353 states and 53034 transitions. [2020-12-22 07:32:30,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 07:32:30,095 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:32:30,096 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] [2020-12-22 07:32:30,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 07:32:30,096 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:32:30,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:32:30,097 INFO L82 PathProgramCache]: Analyzing trace with hash -621993778, now seen corresponding path program 1 times [2020-12-22 07:32:30,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:32:30,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235191939] [2020-12-22 07:32:30,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:32:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:32:30,139 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:32:30,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235191939] [2020-12-22 07:32:30,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:32:30,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:32:30,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648333095] [2020-12-22 07:32:30,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:32:30,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:32:30,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:32:30,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:32:30,142 INFO L87 Difference]: Start difference. First operand 40353 states and 53034 transitions. Second operand 3 states. [2020-12-22 07:32:32,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:32:32,372 INFO L93 Difference]: Finished difference Result 63110 states and 82863 transitions. [2020-12-22 07:32:32,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:32:32,373 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-22 07:32:32,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:32:32,401 INFO L225 Difference]: With dead ends: 63110 [2020-12-22 07:32:32,401 INFO L226 Difference]: Without dead ends: 22781 [2020-12-22 07:32:32,425 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 07:32:32,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22781 states. [2020-12-22 07:32:34,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22781 to 22779. [2020-12-22 07:32:34,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22779 states. [2020-12-22 07:32:34,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22779 states to 22779 states and 29246 transitions. [2020-12-22 07:32:34,448 INFO L78 Accepts]: Start accepts. Automaton has 22779 states and 29246 transitions. Word has length 65 [2020-12-22 07:32:34,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:32:34,448 INFO L481 AbstractCegarLoop]: Abstraction has 22779 states and 29246 transitions. [2020-12-22 07:32:34,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:32:34,449 INFO L276 IsEmpty]: Start isEmpty. Operand 22779 states and 29246 transitions. [2020-12-22 07:32:34,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 07:32:34,450 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:32:34,451 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] [2020-12-22 07:32:34,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 07:32:34,451 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:32:34,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:32:34,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1642879954, now seen corresponding path program 1 times [2020-12-22 07:32:34,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:32:34,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203609596] [2020-12-22 07:32:34,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:32:34,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:32:34,491 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:32:34,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203609596] [2020-12-22 07:32:34,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:32:34,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:32:34,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137833552] [2020-12-22 07:32:34,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:32:34,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:32:34,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:32:34,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:32:34,495 INFO L87 Difference]: Start difference. First operand 22779 states and 29246 transitions. Second operand 3 states. [2020-12-22 07:32:35,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:32:35,795 INFO L93 Difference]: Finished difference Result 31656 states and 40694 transitions. [2020-12-22 07:32:35,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:32:35,796 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-22 07:32:35,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:32:35,807 INFO L225 Difference]: With dead ends: 31656 [2020-12-22 07:32:35,807 INFO L226 Difference]: Without dead ends: 8901 [2020-12-22 07:32:35,822 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 07:32:35,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8901 states. [2020-12-22 07:32:36,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8901 to 8251. [2020-12-22 07:32:36,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8251 states. [2020-12-22 07:32:36,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8251 states to 8251 states and 10504 transitions. [2020-12-22 07:32:36,662 INFO L78 Accepts]: Start accepts. Automaton has 8251 states and 10504 transitions. Word has length 65 [2020-12-22 07:32:36,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:32:36,662 INFO L481 AbstractCegarLoop]: Abstraction has 8251 states and 10504 transitions. [2020-12-22 07:32:36,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:32:36,663 INFO L276 IsEmpty]: Start isEmpty. Operand 8251 states and 10504 transitions. [2020-12-22 07:32:36,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 07:32:36,664 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:32:36,664 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 07:32:36,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 07:32:36,664 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:32:36,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:32:36,665 INFO L82 PathProgramCache]: Analyzing trace with hash 224764346, now seen corresponding path program 1 times [2020-12-22 07:32:36,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:32:36,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312001928] [2020-12-22 07:32:36,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:32:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:32:36,729 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 07:32:36,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312001928] [2020-12-22 07:32:36,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:32:36,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:32:36,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559780192] [2020-12-22 07:32:36,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:32:36,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:32:36,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:32:36,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:32:36,732 INFO L87 Difference]: Start difference. First operand 8251 states and 10504 transitions. Second operand 6 states. [2020-12-22 07:32:37,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:32:37,624 INFO L93 Difference]: Finished difference Result 15261 states and 19469 transitions. [2020-12-22 07:32:37,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:32:37,625 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-12-22 07:32:37,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:32:37,633 INFO L225 Difference]: With dead ends: 15261 [2020-12-22 07:32:37,633 INFO L226 Difference]: Without dead ends: 7073 [2020-12-22 07:32:37,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 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 07:32:37,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7073 states. [2020-12-22 07:32:38,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7073 to 7073. [2020-12-22 07:32:38,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7073 states. [2020-12-22 07:32:38,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7073 states to 7073 states and 8855 transitions. [2020-12-22 07:32:38,307 INFO L78 Accepts]: Start accepts. Automaton has 7073 states and 8855 transitions. Word has length 65 [2020-12-22 07:32:38,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:32:38,307 INFO L481 AbstractCegarLoop]: Abstraction has 7073 states and 8855 transitions. [2020-12-22 07:32:38,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:32:38,308 INFO L276 IsEmpty]: Start isEmpty. Operand 7073 states and 8855 transitions. [2020-12-22 07:32:38,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 07:32:38,309 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:32:38,309 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 07:32:38,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 07:32:38,310 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:32:38,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:32:38,310 INFO L82 PathProgramCache]: Analyzing trace with hash 67059962, now seen corresponding path program 1 times [2020-12-22 07:32:38,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:32:38,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335076534] [2020-12-22 07:32:38,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:32:38,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:32:38,384 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 07:32:38,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335076534] [2020-12-22 07:32:38,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:32:38,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:32:38,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034665413] [2020-12-22 07:32:38,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:32:38,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:32:38,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:32:38,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:32:38,386 INFO L87 Difference]: Start difference. First operand 7073 states and 8855 transitions. Second operand 7 states. [2020-12-22 07:32:39,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:32:39,020 INFO L93 Difference]: Finished difference Result 13117 states and 16497 transitions. [2020-12-22 07:32:39,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:32:39,021 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-12-22 07:32:39,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:32:39,028 INFO L225 Difference]: With dead ends: 13117 [2020-12-22 07:32:39,029 INFO L226 Difference]: Without dead ends: 6155 [2020-12-22 07:32:39,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2020-12-22 07:32:39,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6155 states. [2020-12-22 07:32:39,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6155 to 6153. [2020-12-22 07:32:39,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6153 states. [2020-12-22 07:32:39,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6153 states to 6153 states and 7699 transitions. [2020-12-22 07:32:39,607 INFO L78 Accepts]: Start accepts. Automaton has 6153 states and 7699 transitions. Word has length 65 [2020-12-22 07:32:39,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:32:39,608 INFO L481 AbstractCegarLoop]: Abstraction has 6153 states and 7699 transitions. [2020-12-22 07:32:39,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:32:39,608 INFO L276 IsEmpty]: Start isEmpty. Operand 6153 states and 7699 transitions. [2020-12-22 07:32:39,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 07:32:39,609 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:32:39,609 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 07:32:39,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 07:32:39,609 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:32:39,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:32:39,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1467200301, now seen corresponding path program 1 times [2020-12-22 07:32:39,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:32:39,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863917898] [2020-12-22 07:32:39,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:32:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:32:40,680 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:32:40,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863917898] [2020-12-22 07:32:40,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733183715] [2020-12-22 07:32:40,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:32:40,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:32:40,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-22 07:32:40,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:32:41,298 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 07:32:41,818 WARN L197 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 46 [2020-12-22 07:32:42,480 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2020-12-22 07:32:42,538 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:32:42,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:32:42,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 12] total 33 [2020-12-22 07:32:42,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977786278] [2020-12-22 07:32:42,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-12-22 07:32:42,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:32:42,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-12-22 07:32:42,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=979, Unknown=0, NotChecked=0, Total=1056 [2020-12-22 07:32:42,541 INFO L87 Difference]: Start difference. First operand 6153 states and 7699 transitions. Second operand 33 states. [2020-12-22 07:32:42,978 WARN L197 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 81 [2020-12-22 07:32:44,372 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2020-12-22 07:32:44,574 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2020-12-22 07:32:44,900 WARN L197 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2020-12-22 07:32:45,187 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2020-12-22 07:32:45,612 WARN L197 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2020-12-22 07:32:46,198 WARN L197 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 97 [2020-12-22 07:32:46,619 WARN L197 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 80 [2020-12-22 07:32:47,048 WARN L197 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2020-12-22 07:32:47,471 WARN L197 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-12-22 07:32:47,936 WARN L197 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 87 [2020-12-22 07:32:48,333 WARN L197 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2020-12-22 07:32:48,668 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 74 [2020-12-22 07:32:49,031 WARN L197 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2020-12-22 07:32:49,432 WARN L197 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-12-22 07:32:49,762 WARN L197 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2020-12-22 07:32:50,258 WARN L197 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2020-12-22 07:32:50,559 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2020-12-22 07:32:50,821 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2020-12-22 07:32:51,217 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-12-22 07:32:51,561 WARN L197 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 74 [2020-12-22 07:32:51,919 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-12-22 07:32:52,360 WARN L197 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-12-22 07:32:52,639 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-12-22 07:32:53,048 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-12-22 07:32:53,597 WARN L197 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2020-12-22 07:32:54,240 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 30 [2020-12-22 07:32:54,508 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-12-22 07:32:54,946 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 35 [2020-12-22 07:32:55,208 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2020-12-22 07:32:55,597 WARN L197 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2020-12-22 07:32:56,008 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2020-12-22 07:32:56,319 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2020-12-22 07:32:56,763 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2020-12-22 07:32:57,011 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-12-22 07:32:57,304 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2020-12-22 07:32:57,666 WARN L197 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2020-12-22 07:32:58,062 WARN L197 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2020-12-22 07:32:58,467 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-12-22 07:32:59,204 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-12-22 07:32:59,634 WARN L197 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-12-22 07:33:02,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:02,013 INFO L93 Difference]: Finished difference Result 21273 states and 26683 transitions. [2020-12-22 07:33:02,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-12-22 07:33:02,017 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 66 [2020-12-22 07:33:02,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:02,035 INFO L225 Difference]: With dead ends: 21273 [2020-12-22 07:33:02,035 INFO L226 Difference]: Without dead ends: 18044 [2020-12-22 07:33:02,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1869 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=1342, Invalid=6848, Unknown=0, NotChecked=0, Total=8190 [2020-12-22 07:33:02,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18044 states. [2020-12-22 07:33:03,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18044 to 8655. [2020-12-22 07:33:03,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8655 states. [2020-12-22 07:33:03,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8655 states to 8655 states and 10815 transitions. [2020-12-22 07:33:03,168 INFO L78 Accepts]: Start accepts. Automaton has 8655 states and 10815 transitions. Word has length 66 [2020-12-22 07:33:03,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:03,168 INFO L481 AbstractCegarLoop]: Abstraction has 8655 states and 10815 transitions. [2020-12-22 07:33:03,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-12-22 07:33:03,168 INFO L276 IsEmpty]: Start isEmpty. Operand 8655 states and 10815 transitions. [2020-12-22 07:33:03,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 07:33:03,169 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:03,169 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 07:33:03,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:33:03,370 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:03,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:03,372 INFO L82 PathProgramCache]: Analyzing trace with hash 395112077, now seen corresponding path program 1 times [2020-12-22 07:33:03,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:03,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168155391] [2020-12-22 07:33:03,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:04,457 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:33:04,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168155391] [2020-12-22 07:33:04,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875233901] [2020-12-22 07:33:04,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:33:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:04,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 07:33:04,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:33:05,038 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 07:33:05,449 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 34 [2020-12-22 07:33:06,100 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:33:06,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:33:06,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 12] total 33 [2020-12-22 07:33:06,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455434777] [2020-12-22 07:33:06,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-12-22 07:33:06,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:06,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-12-22 07:33:06,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=969, Unknown=0, NotChecked=0, Total=1056 [2020-12-22 07:33:06,103 INFO L87 Difference]: Start difference. First operand 8655 states and 10815 transitions. Second operand 33 states. [2020-12-22 07:33:06,334 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-12-22 07:33:07,336 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-12-22 07:33:07,681 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-12-22 07:33:08,137 WARN L197 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-12-22 07:33:08,709 WARN L197 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 81 [2020-12-22 07:33:09,292 WARN L197 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 83 [2020-12-22 07:33:10,028 WARN L197 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 98 [2020-12-22 07:33:10,783 WARN L197 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2020-12-22 07:33:11,237 WARN L197 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2020-12-22 07:33:11,757 WARN L197 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2020-12-22 07:33:12,203 WARN L197 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2020-12-22 07:33:12,595 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2020-12-22 07:33:12,967 WARN L197 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-12-22 07:33:13,572 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-12-22 07:33:13,903 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-12-22 07:33:14,234 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-12-22 07:33:14,642 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2020-12-22 07:33:15,029 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-12-22 07:33:16,366 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-12-22 07:33:16,729 WARN L197 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-12-22 07:33:17,055 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-12-22 07:33:17,402 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-12-22 07:33:18,057 WARN L197 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-12-22 07:33:18,714 WARN L197 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2020-12-22 07:33:19,249 WARN L197 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-12-22 07:33:19,973 WARN L197 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-12-22 07:33:20,229 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-12-22 07:33:20,529 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-12-22 07:33:21,330 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-12-22 07:33:21,623 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-12-22 07:33:21,965 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2020-12-22 07:33:22,364 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2020-12-22 07:33:22,770 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2020-12-22 07:33:23,740 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2020-12-22 07:33:24,206 WARN L197 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2020-12-22 07:33:25,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:25,594 INFO L93 Difference]: Finished difference Result 20993 states and 26718 transitions. [2020-12-22 07:33:25,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-12-22 07:33:25,596 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 66 [2020-12-22 07:33:25,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:25,619 INFO L225 Difference]: With dead ends: 20993 [2020-12-22 07:33:25,619 INFO L226 Difference]: Without dead ends: 16934 [2020-12-22 07:33:25,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1307 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=999, Invalid=5163, Unknown=0, NotChecked=0, Total=6162 [2020-12-22 07:33:25,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16934 states. [2020-12-22 07:33:26,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16934 to 7122. [2020-12-22 07:33:26,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7122 states. [2020-12-22 07:33:26,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7122 states to 7122 states and 8908 transitions. [2020-12-22 07:33:26,639 INFO L78 Accepts]: Start accepts. Automaton has 7122 states and 8908 transitions. Word has length 66 [2020-12-22 07:33:26,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:26,639 INFO L481 AbstractCegarLoop]: Abstraction has 7122 states and 8908 transitions. [2020-12-22 07:33:26,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-12-22 07:33:26,639 INFO L276 IsEmpty]: Start isEmpty. Operand 7122 states and 8908 transitions. [2020-12-22 07:33:26,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 07:33:26,640 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:26,640 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] [2020-12-22 07:33:26,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-22 07:33:26,841 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:26,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:26,842 INFO L82 PathProgramCache]: Analyzing trace with hash 855365469, now seen corresponding path program 1 times [2020-12-22 07:33:26,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:26,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630518867] [2020-12-22 07:33:26,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:26,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:28,074 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:33:28,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630518867] [2020-12-22 07:33:28,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64399802] [2020-12-22 07:33:28,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:33:28,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:28,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-22 07:33:28,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:33:28,793 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 07:33:29,362 WARN L197 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 44 [2020-12-22 07:33:30,130 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 35 [2020-12-22 07:33:30,192 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:33:30,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:33:30,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 12] total 32 [2020-12-22 07:33:30,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085856005] [2020-12-22 07:33:30,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-12-22 07:33:30,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:30,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-12-22 07:33:30,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=915, Unknown=0, NotChecked=0, Total=992 [2020-12-22 07:33:30,194 INFO L87 Difference]: Start difference. First operand 7122 states and 8908 transitions. Second operand 32 states. [2020-12-22 07:33:30,622 WARN L197 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2020-12-22 07:33:31,622 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 24 [2020-12-22 07:33:31,913 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 26 [2020-12-22 07:33:32,207 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 30 [2020-12-22 07:33:32,493 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 40 [2020-12-22 07:33:32,882 WARN L197 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2020-12-22 07:33:33,481 WARN L197 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 83 [2020-12-22 07:33:34,178 WARN L197 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 94 [2020-12-22 07:33:34,949 WARN L197 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 91 [2020-12-22 07:33:35,542 WARN L197 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2020-12-22 07:33:36,100 WARN L197 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2020-12-22 07:33:36,768 WARN L197 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2020-12-22 07:33:37,266 WARN L197 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-12-22 07:33:37,713 WARN L197 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 64 [2020-12-22 07:33:38,348 WARN L197 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 45 [2020-12-22 07:33:38,807 WARN L197 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-12-22 07:33:39,275 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2020-12-22 07:33:39,637 WARN L197 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-12-22 07:33:40,004 WARN L197 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-12-22 07:33:40,691 WARN L197 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 64 [2020-12-22 07:33:41,298 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2020-12-22 07:33:41,732 WARN L197 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2020-12-22 07:33:42,245 WARN L197 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2020-12-22 07:33:42,722 WARN L197 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2020-12-22 07:33:43,849 WARN L197 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2020-12-22 07:33:44,481 WARN L197 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2020-12-22 07:33:45,118 WARN L197 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2020-12-22 07:33:45,767 WARN L197 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2020-12-22 07:33:46,480 WARN L197 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2020-12-22 07:33:46,924 WARN L197 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-12-22 07:33:47,739 WARN L197 SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 91 [2020-12-22 07:33:48,517 WARN L197 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 80 [2020-12-22 07:33:48,932 WARN L197 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-12-22 07:33:49,818 WARN L197 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-12-22 07:33:50,318 WARN L197 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2020-12-22 07:33:51,403 WARN L197 SmtUtils]: Spent 860.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 106 [2020-12-22 07:33:51,999 WARN L197 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-12-22 07:33:52,454 WARN L197 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2020-12-22 07:33:53,068 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2020-12-22 07:33:54,154 WARN L197 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2020-12-22 07:33:55,241 WARN L197 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2020-12-22 07:33:56,181 WARN L197 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 83 [2020-12-22 07:33:57,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:57,695 INFO L93 Difference]: Finished difference Result 21358 states and 27102 transitions. [2020-12-22 07:33:57,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-12-22 07:33:57,698 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 67 [2020-12-22 07:33:57,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:57,718 INFO L225 Difference]: With dead ends: 21358 [2020-12-22 07:33:57,719 INFO L226 Difference]: Without dead ends: 16499 [2020-12-22 07:33:57,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1132 ImplicationChecksByTransitivity, 22.8s TimeCoverageRelationStatistics Valid=1062, Invalid=5100, Unknown=0, NotChecked=0, Total=6162 [2020-12-22 07:33:57,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16499 states. [2020-12-22 07:33:58,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16499 to 6110. [2020-12-22 07:33:58,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6110 states. [2020-12-22 07:33:58,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6110 states to 6110 states and 7674 transitions. [2020-12-22 07:33:58,582 INFO L78 Accepts]: Start accepts. Automaton has 6110 states and 7674 transitions. Word has length 67 [2020-12-22 07:33:58,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:58,582 INFO L481 AbstractCegarLoop]: Abstraction has 6110 states and 7674 transitions. [2020-12-22 07:33:58,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-12-22 07:33:58,582 INFO L276 IsEmpty]: Start isEmpty. Operand 6110 states and 7674 transitions. [2020-12-22 07:33:58,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 07:33:58,585 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:58,585 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:33:58,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:33:58,786 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:58,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:58,787 INFO L82 PathProgramCache]: Analyzing trace with hash 455078728, now seen corresponding path program 1 times [2020-12-22 07:33:58,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:58,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743095691] [2020-12-22 07:33:58,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:59,381 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 18 [2020-12-22 07:33:59,549 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:33:59,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743095691] [2020-12-22 07:33:59,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810298934] [2020-12-22 07:33:59,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:33:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:59,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 07:33:59,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:34:00,433 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 07:34:00,500 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:00,607 INFO L757 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:00,822 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:00,955 INFO L757 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:01,172 INFO L757 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:01,604 INFO L757 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:02,200 INFO L757 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:02,781 INFO L757 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:03,391 INFO L757 QuantifierPusher]: Run 70 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:04,044 INFO L757 QuantifierPusher]: Run 80 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:04,850 INFO L757 QuantifierPusher]: Run 90 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:05,736 INFO L757 QuantifierPusher]: Run 100 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:06,711 INFO L757 QuantifierPusher]: Run 110 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:08,011 INFO L757 QuantifierPusher]: Run 120 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:09,558 INFO L757 QuantifierPusher]: Run 130 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:11,781 INFO L757 QuantifierPusher]: Run 140 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:14,054 INFO L757 QuantifierPusher]: Run 150 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:15,631 INFO L757 QuantifierPusher]: Run 160 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:16,956 INFO L757 QuantifierPusher]: Run 170 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:17,807 INFO L757 QuantifierPusher]: Run 180 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:18,855 INFO L757 QuantifierPusher]: Run 190 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:20,161 INFO L757 QuantifierPusher]: Run 200 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:21,799 INFO L757 QuantifierPusher]: Run 210 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:23,405 INFO L757 QuantifierPusher]: Run 220 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:25,307 INFO L757 QuantifierPusher]: Run 230 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:27,816 INFO L757 QuantifierPusher]: Run 240 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:30,999 INFO L757 QuantifierPusher]: Run 250 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:34,565 INFO L757 QuantifierPusher]: Run 260 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:38,409 INFO L757 QuantifierPusher]: Run 270 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:42,833 INFO L757 QuantifierPusher]: Run 280 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:46,270 INFO L757 QuantifierPusher]: Run 290 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:48,743 INFO L757 QuantifierPusher]: Run 300 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:51,394 INFO L757 QuantifierPusher]: Run 310 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:54,698 INFO L757 QuantifierPusher]: Run 320 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:58,224 INFO L757 QuantifierPusher]: Run 330 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:35:02,279 INFO L757 QuantifierPusher]: Run 340 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:35:06,579 INFO L757 QuantifierPusher]: Run 350 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:35:10,566 INFO L757 QuantifierPusher]: Run 360 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:35:15,096 INFO L757 QuantifierPusher]: Run 370 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:35:20,240 INFO L757 QuantifierPusher]: Run 380 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:35:25,686 INFO L757 QuantifierPusher]: Run 390 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:35:30,973 INFO L757 QuantifierPusher]: Run 400 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:35:36,693 INFO L757 QuantifierPusher]: Run 410 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug.