/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded/pals_lcr.4.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 07:33:00,102 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 07:33:00,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 07:33:00,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 07:33:00,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 07:33:00,156 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 07:33:00,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 07:33:00,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 07:33:00,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 07:33:00,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 07:33:00,179 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 07:33:00,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 07:33:00,183 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 07:33:00,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 07:33:00,186 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 07:33:00,187 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 07:33:00,190 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 07:33:00,200 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 07:33:00,201 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 07:33:00,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 07:33:00,203 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 07:33:00,231 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 07:33:00,231 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 07:33:00,233 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 07:33:00,233 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 07:33:00,234 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 07:33:00,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 07:33:00,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 07:33:00,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 07:33:00,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 07:33:00,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 07:33:00,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 07:33:00,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 07:33:00,236 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 07:33:00,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 07:33:00,236 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 07:33:00,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 07:33:00,237 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 07:33:00,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:33:00,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 07:33:00,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 07:33:00,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 07:33:00,241 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 07:33:00,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 07:33:00,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 07:33:00,242 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 07:33:00,242 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 07:33:00,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 07:33:00,687 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 07:33:00,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 07:33:00,693 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 07:33:00,693 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 07:33:00,694 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.4.ufo.UNBOUNDED.pals.c [2020-12-22 07:33:00,793 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68d5b547f/6bda99780c49415e8567be98bc1b5bc2/FLAG76027d0b9 [2020-12-22 07:33:01,480 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 07:33:01,481 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.4.ufo.UNBOUNDED.pals.c [2020-12-22 07:33:01,501 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68d5b547f/6bda99780c49415e8567be98bc1b5bc2/FLAG76027d0b9 [2020-12-22 07:33:01,748 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68d5b547f/6bda99780c49415e8567be98bc1b5bc2 [2020-12-22 07:33:01,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 07:33:01,755 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 07:33:01,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 07:33:01,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 07:33:01,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 07:33:01,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:33:01" (1/1) ... [2020-12-22 07:33:01,767 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2db36d80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:33:01, skipping insertion in model container [2020-12-22 07:33:01,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:33:01" (1/1) ... [2020-12-22 07:33:01,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 07:33:01,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 07:33:02,057 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.4.ufo.UNBOUNDED.pals.c[8305,8318] [2020-12-22 07:33:02,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:33:02,073 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 07:33:02,166 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.4.ufo.UNBOUNDED.pals.c[8305,8318] [2020-12-22 07:33:02,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:33:02,203 INFO L208 MainTranslator]: Completed translation [2020-12-22 07:33:02,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:33:02 WrapperNode [2020-12-22 07:33:02,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 07:33:02,205 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 07:33:02,205 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 07:33:02,206 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 07:33:02,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:33:02" (1/1) ... [2020-12-22 07:33:02,253 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:33:02" (1/1) ... [2020-12-22 07:33:02,325 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 07:33:02,326 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 07:33:02,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 07:33:02,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 07:33:02,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:33:02" (1/1) ... [2020-12-22 07:33:02,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:33:02" (1/1) ... [2020-12-22 07:33:02,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:33:02" (1/1) ... [2020-12-22 07:33:02,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:33:02" (1/1) ... [2020-12-22 07:33:02,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:33:02" (1/1) ... [2020-12-22 07:33:02,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:33:02" (1/1) ... [2020-12-22 07:33:02,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:33:02" (1/1) ... [2020-12-22 07:33:02,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 07:33:02,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 07:33:02,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 07:33:02,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 07:33:02,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:33:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:33:02,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 07:33:02,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 07:33:02,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 07:33:02,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 07:33:03,276 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 07:33:03,276 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2020-12-22 07:33:03,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:33:03 BoogieIcfgContainer [2020-12-22 07:33:03,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 07:33:03,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 07:33:03,280 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 07:33:03,284 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 07:33:03,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:33:01" (1/3) ... [2020-12-22 07:33:03,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63869f0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:33:03, skipping insertion in model container [2020-12-22 07:33:03,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:33:02" (2/3) ... [2020-12-22 07:33:03,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63869f0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:33:03, skipping insertion in model container [2020-12-22 07:33:03,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:33:03" (3/3) ... [2020-12-22 07:33:03,287 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.UNBOUNDED.pals.c [2020-12-22 07:33:03,294 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 07:33:03,299 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 07:33:03,328 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 07:33:03,382 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 07:33:03,383 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 07:33:03,383 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 07:33:03,383 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 07:33:03,383 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 07:33:03,383 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 07:33:03,384 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 07:33:03,384 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 07:33:03,406 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2020-12-22 07:33:03,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 07:33:03,422 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:03,423 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:33:03,424 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:03,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:03,436 INFO L82 PathProgramCache]: Analyzing trace with hash -171388107, now seen corresponding path program 1 times [2020-12-22 07:33:03,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:03,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055341924] [2020-12-22 07:33:03,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:03,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:03,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:33:03,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055341924] [2020-12-22 07:33:03,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:03,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 07:33:03,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769331675] [2020-12-22 07:33:03,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 07:33:03,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:03,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 07:33:03,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 07:33:03,786 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 2 states. [2020-12-22 07:33:03,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:03,813 INFO L93 Difference]: Finished difference Result 124 states and 205 transitions. [2020-12-22 07:33:03,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 07:33:03,815 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 29 [2020-12-22 07:33:03,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:03,826 INFO L225 Difference]: With dead ends: 124 [2020-12-22 07:33:03,826 INFO L226 Difference]: Without dead ends: 74 [2020-12-22 07:33:03,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 07:33:03,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-22 07:33:03,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-12-22 07:33:03,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-22 07:33:03,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 123 transitions. [2020-12-22 07:33:03,874 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 123 transitions. Word has length 29 [2020-12-22 07:33:03,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:03,874 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 123 transitions. [2020-12-22 07:33:03,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 07:33:03,875 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 123 transitions. [2020-12-22 07:33:03,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 07:33:03,876 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:03,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:33:03,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 07:33:03,877 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:03,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:03,878 INFO L82 PathProgramCache]: Analyzing trace with hash -305401613, now seen corresponding path program 1 times [2020-12-22 07:33:03,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:03,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487132256] [2020-12-22 07:33:03,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:03,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:03,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:33:03,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487132256] [2020-12-22 07:33:03,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:03,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:33:03,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646591312] [2020-12-22 07:33:03,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:33:03,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:03,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:33:03,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:33:03,981 INFO L87 Difference]: Start difference. First operand 74 states and 123 transitions. Second operand 5 states. [2020-12-22 07:33:04,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:04,077 INFO L93 Difference]: Finished difference Result 123 states and 198 transitions. [2020-12-22 07:33:04,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:33:04,078 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-12-22 07:33:04,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:04,080 INFO L225 Difference]: With dead ends: 123 [2020-12-22 07:33:04,080 INFO L226 Difference]: Without dead ends: 74 [2020-12-22 07:33:04,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:33:04,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-22 07:33:04,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-12-22 07:33:04,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-22 07:33:04,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 100 transitions. [2020-12-22 07:33:04,091 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 100 transitions. Word has length 29 [2020-12-22 07:33:04,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:04,092 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 100 transitions. [2020-12-22 07:33:04,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:33:04,092 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 100 transitions. [2020-12-22 07:33:04,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 07:33:04,094 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:04,094 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:33:04,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 07:33:04,095 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:04,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:04,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1295954354, now seen corresponding path program 1 times [2020-12-22 07:33:04,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:04,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108937213] [2020-12-22 07:33:04,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:04,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:04,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:33:04,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108937213] [2020-12-22 07:33:04,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:04,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:33:04,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722633376] [2020-12-22 07:33:04,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:33:04,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:04,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:33:04,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:33:04,250 INFO L87 Difference]: Start difference. First operand 74 states and 100 transitions. Second operand 3 states. [2020-12-22 07:33:04,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:04,284 INFO L93 Difference]: Finished difference Result 158 states and 232 transitions. [2020-12-22 07:33:04,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:33:04,291 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-12-22 07:33:04,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:04,293 INFO L225 Difference]: With dead ends: 158 [2020-12-22 07:33:04,294 INFO L226 Difference]: Without dead ends: 113 [2020-12-22 07:33:04,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:33:04,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-12-22 07:33:04,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2020-12-22 07:33:04,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-12-22 07:33:04,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 159 transitions. [2020-12-22 07:33:04,321 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 159 transitions. Word has length 51 [2020-12-22 07:33:04,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:04,322 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 159 transitions. [2020-12-22 07:33:04,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:33:04,325 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 159 transitions. [2020-12-22 07:33:04,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 07:33:04,329 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:04,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:33:04,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 07:33:04,330 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:04,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:04,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1404728260, now seen corresponding path program 1 times [2020-12-22 07:33:04,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:04,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691497801] [2020-12-22 07:33:04,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:04,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:04,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:33:04,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691497801] [2020-12-22 07:33:04,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:04,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:33:04,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573814873] [2020-12-22 07:33:04,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:33:04,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:04,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:33:04,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:33:04,500 INFO L87 Difference]: Start difference. First operand 111 states and 159 transitions. Second operand 3 states. [2020-12-22 07:33:04,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:04,528 INFO L93 Difference]: Finished difference Result 263 states and 399 transitions. [2020-12-22 07:33:04,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:33:04,528 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-12-22 07:33:04,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:04,533 INFO L225 Difference]: With dead ends: 263 [2020-12-22 07:33:04,534 INFO L226 Difference]: Without dead ends: 181 [2020-12-22 07:33:04,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:33:04,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-12-22 07:33:04,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 179. [2020-12-22 07:33:04,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-12-22 07:33:04,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 266 transitions. [2020-12-22 07:33:04,580 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 266 transitions. Word has length 51 [2020-12-22 07:33:04,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:04,581 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 266 transitions. [2020-12-22 07:33:04,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:33:04,584 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 266 transitions. [2020-12-22 07:33:04,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 07:33:04,585 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:04,585 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:33:04,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 07:33:04,586 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:04,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:04,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1742521402, now seen corresponding path program 1 times [2020-12-22 07:33:04,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:04,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965749132] [2020-12-22 07:33:04,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:04,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:04,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:33:04,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965749132] [2020-12-22 07:33:04,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:04,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:33:04,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978664916] [2020-12-22 07:33:04,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:33:04,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:04,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:33:04,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:33:04,761 INFO L87 Difference]: Start difference. First operand 179 states and 266 transitions. Second operand 6 states. [2020-12-22 07:33:05,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:05,153 INFO L93 Difference]: Finished difference Result 1379 states and 2162 transitions. [2020-12-22 07:33:05,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 07:33:05,156 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-12-22 07:33:05,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:05,168 INFO L225 Difference]: With dead ends: 1379 [2020-12-22 07:33:05,168 INFO L226 Difference]: Without dead ends: 1229 [2020-12-22 07:33:05,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:33:05,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2020-12-22 07:33:05,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 327. [2020-12-22 07:33:05,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2020-12-22 07:33:05,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 494 transitions. [2020-12-22 07:33:05,243 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 494 transitions. Word has length 51 [2020-12-22 07:33:05,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:05,244 INFO L481 AbstractCegarLoop]: Abstraction has 327 states and 494 transitions. [2020-12-22 07:33:05,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:33:05,244 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 494 transitions. [2020-12-22 07:33:05,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 07:33:05,251 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:05,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:33:05,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 07:33:05,252 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:05,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:05,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1889876246, now seen corresponding path program 1 times [2020-12-22 07:33:05,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:05,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714176905] [2020-12-22 07:33:05,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:05,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:05,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:33:05,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714176905] [2020-12-22 07:33:05,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:05,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:33:05,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346990889] [2020-12-22 07:33:05,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:33:05,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:05,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:33:05,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:33:05,348 INFO L87 Difference]: Start difference. First operand 327 states and 494 transitions. Second operand 3 states. [2020-12-22 07:33:05,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:05,416 INFO L93 Difference]: Finished difference Result 879 states and 1348 transitions. [2020-12-22 07:33:05,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:33:05,416 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-12-22 07:33:05,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:05,422 INFO L225 Difference]: With dead ends: 879 [2020-12-22 07:33:05,422 INFO L226 Difference]: Without dead ends: 581 [2020-12-22 07:33:05,425 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 07:33:05,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2020-12-22 07:33:05,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 571. [2020-12-22 07:33:05,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-12-22 07:33:05,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 854 transitions. [2020-12-22 07:33:05,482 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 854 transitions. Word has length 53 [2020-12-22 07:33:05,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:05,483 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 854 transitions. [2020-12-22 07:33:05,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:33:05,484 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 854 transitions. [2020-12-22 07:33:05,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 07:33:05,487 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:05,488 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:33:05,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 07:33:05,488 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:05,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:05,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1823382734, now seen corresponding path program 1 times [2020-12-22 07:33:05,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:05,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739081654] [2020-12-22 07:33:05,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:05,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:05,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:33:05,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739081654] [2020-12-22 07:33:05,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:05,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:33:05,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102387989] [2020-12-22 07:33:05,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:33:05,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:05,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:33:05,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:33:05,712 INFO L87 Difference]: Start difference. First operand 571 states and 854 transitions. Second operand 6 states. [2020-12-22 07:33:05,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:05,875 INFO L93 Difference]: Finished difference Result 1115 states and 1680 transitions. [2020-12-22 07:33:05,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:33:05,875 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-12-22 07:33:05,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:05,879 INFO L225 Difference]: With dead ends: 1115 [2020-12-22 07:33:05,879 INFO L226 Difference]: Without dead ends: 573 [2020-12-22 07:33:05,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:33:05,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2020-12-22 07:33:05,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 571. [2020-12-22 07:33:05,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-12-22 07:33:05,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 846 transitions. [2020-12-22 07:33:05,913 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 846 transitions. Word has length 53 [2020-12-22 07:33:05,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:05,913 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 846 transitions. [2020-12-22 07:33:05,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:33:05,914 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 846 transitions. [2020-12-22 07:33:05,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 07:33:05,914 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:05,915 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:33:05,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 07:33:05,915 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:05,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:05,916 INFO L82 PathProgramCache]: Analyzing trace with hash -34468658, now seen corresponding path program 1 times [2020-12-22 07:33:05,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:05,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608099925] [2020-12-22 07:33:05,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:05,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:33:05,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608099925] [2020-12-22 07:33:05,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:05,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:33:05,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366395125] [2020-12-22 07:33:05,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:33:05,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:05,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:33:05,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:33:05,967 INFO L87 Difference]: Start difference. First operand 571 states and 846 transitions. Second operand 3 states. [2020-12-22 07:33:06,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:06,037 INFO L93 Difference]: Finished difference Result 1559 states and 2320 transitions. [2020-12-22 07:33:06,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:33:06,038 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-12-22 07:33:06,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:06,044 INFO L225 Difference]: With dead ends: 1559 [2020-12-22 07:33:06,044 INFO L226 Difference]: Without dead ends: 1017 [2020-12-22 07:33:06,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:33:06,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2020-12-22 07:33:06,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 1015. [2020-12-22 07:33:06,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1015 states. [2020-12-22 07:33:06,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1486 transitions. [2020-12-22 07:33:06,109 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1486 transitions. Word has length 53 [2020-12-22 07:33:06,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:06,109 INFO L481 AbstractCegarLoop]: Abstraction has 1015 states and 1486 transitions. [2020-12-22 07:33:06,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:33:06,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1486 transitions. [2020-12-22 07:33:06,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 07:33:06,110 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:06,110 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:33:06,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 07:33:06,111 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:06,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:06,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1105013027, now seen corresponding path program 1 times [2020-12-22 07:33:06,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:06,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205331577] [2020-12-22 07:33:06,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:06,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:06,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:33:06,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205331577] [2020-12-22 07:33:06,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:06,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 07:33:06,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006865823] [2020-12-22 07:33:06,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 07:33:06,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:06,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 07:33:06,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:33:06,236 INFO L87 Difference]: Start difference. First operand 1015 states and 1486 transitions. Second operand 8 states. [2020-12-22 07:33:06,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:06,501 INFO L93 Difference]: Finished difference Result 1769 states and 2571 transitions. [2020-12-22 07:33:06,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:33:06,501 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-12-22 07:33:06,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:06,510 INFO L225 Difference]: With dead ends: 1769 [2020-12-22 07:33:06,510 INFO L226 Difference]: Without dead ends: 1767 [2020-12-22 07:33:06,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 07:33:06,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-12-22 07:33:06,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1063. [2020-12-22 07:33:06,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1063 states. [2020-12-22 07:33:06,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1526 transitions. [2020-12-22 07:33:06,600 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1526 transitions. Word has length 54 [2020-12-22 07:33:06,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:06,600 INFO L481 AbstractCegarLoop]: Abstraction has 1063 states and 1526 transitions. [2020-12-22 07:33:06,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 07:33:06,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1526 transitions. [2020-12-22 07:33:06,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 07:33:06,601 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:06,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:33:06,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 07:33:06,602 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:06,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:06,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1044582089, now seen corresponding path program 1 times [2020-12-22 07:33:06,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:06,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231801423] [2020-12-22 07:33:06,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:06,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:06,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:33:06,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231801423] [2020-12-22 07:33:06,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:06,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:33:06,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267399671] [2020-12-22 07:33:06,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:33:06,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:06,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:33:06,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:33:06,646 INFO L87 Difference]: Start difference. First operand 1063 states and 1526 transitions. Second operand 3 states. [2020-12-22 07:33:06,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:06,787 INFO L93 Difference]: Finished difference Result 2126 states and 3084 transitions. [2020-12-22 07:33:06,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:33:06,790 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-12-22 07:33:06,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:06,797 INFO L225 Difference]: With dead ends: 2126 [2020-12-22 07:33:06,798 INFO L226 Difference]: Without dead ends: 1531 [2020-12-22 07:33:06,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:33:06,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2020-12-22 07:33:06,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1529. [2020-12-22 07:33:06,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1529 states. [2020-12-22 07:33:06,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1529 states to 1529 states and 2184 transitions. [2020-12-22 07:33:06,924 INFO L78 Accepts]: Start accepts. Automaton has 1529 states and 2184 transitions. Word has length 55 [2020-12-22 07:33:06,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:06,924 INFO L481 AbstractCegarLoop]: Abstraction has 1529 states and 2184 transitions. [2020-12-22 07:33:06,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:33:06,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1529 states and 2184 transitions. [2020-12-22 07:33:06,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 07:33:06,926 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:06,927 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:33:06,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 07:33:06,927 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:06,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:06,928 INFO L82 PathProgramCache]: Analyzing trace with hash -993002958, now seen corresponding path program 1 times [2020-12-22 07:33:06,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:06,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212808925] [2020-12-22 07:33:06,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:07,054 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 07:33:07,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212808925] [2020-12-22 07:33:07,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:07,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:33:07,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458123485] [2020-12-22 07:33:07,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:33:07,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:07,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:33:07,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:33:07,059 INFO L87 Difference]: Start difference. First operand 1529 states and 2184 transitions. Second operand 6 states. [2020-12-22 07:33:07,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:07,625 INFO L93 Difference]: Finished difference Result 7835 states and 11225 transitions. [2020-12-22 07:33:07,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:33:07,626 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-12-22 07:33:07,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:07,658 INFO L225 Difference]: With dead ends: 7835 [2020-12-22 07:33:07,659 INFO L226 Difference]: Without dead ends: 6337 [2020-12-22 07:33:07,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:33:07,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6337 states. [2020-12-22 07:33:07,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6337 to 3025. [2020-12-22 07:33:07,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3025 states. [2020-12-22 07:33:07,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3025 states to 3025 states and 4312 transitions. [2020-12-22 07:33:07,959 INFO L78 Accepts]: Start accepts. Automaton has 3025 states and 4312 transitions. Word has length 77 [2020-12-22 07:33:07,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:07,959 INFO L481 AbstractCegarLoop]: Abstraction has 3025 states and 4312 transitions. [2020-12-22 07:33:07,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:33:07,960 INFO L276 IsEmpty]: Start isEmpty. Operand 3025 states and 4312 transitions. [2020-12-22 07:33:07,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 07:33:07,962 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:07,962 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:33:07,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 07:33:07,962 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:07,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:07,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1543800376, now seen corresponding path program 1 times [2020-12-22 07:33:07,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:07,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523872588] [2020-12-22 07:33:07,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:08,077 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 07:33:08,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523872588] [2020-12-22 07:33:08,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:08,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:33:08,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624606412] [2020-12-22 07:33:08,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:33:08,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:08,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:33:08,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:33:08,079 INFO L87 Difference]: Start difference. First operand 3025 states and 4312 transitions. Second operand 6 states. [2020-12-22 07:33:08,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:08,678 INFO L93 Difference]: Finished difference Result 9331 states and 13353 transitions. [2020-12-22 07:33:08,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:33:08,679 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-12-22 07:33:08,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:08,716 INFO L225 Difference]: With dead ends: 9331 [2020-12-22 07:33:08,716 INFO L226 Difference]: Without dead ends: 7833 [2020-12-22 07:33:08,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:33:08,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7833 states. [2020-12-22 07:33:09,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7833 to 5273. [2020-12-22 07:33:09,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5273 states. [2020-12-22 07:33:09,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5273 states to 5273 states and 7484 transitions. [2020-12-22 07:33:09,165 INFO L78 Accepts]: Start accepts. Automaton has 5273 states and 7484 transitions. Word has length 77 [2020-12-22 07:33:09,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:09,166 INFO L481 AbstractCegarLoop]: Abstraction has 5273 states and 7484 transitions. [2020-12-22 07:33:09,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:33:09,166 INFO L276 IsEmpty]: Start isEmpty. Operand 5273 states and 7484 transitions. [2020-12-22 07:33:09,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 07:33:09,168 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:09,169 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:33:09,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 07:33:09,169 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:09,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:09,170 INFO L82 PathProgramCache]: Analyzing trace with hash -412160536, now seen corresponding path program 1 times [2020-12-22 07:33:09,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:09,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967081472] [2020-12-22 07:33:09,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:09,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:09,258 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 07:33:09,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967081472] [2020-12-22 07:33:09,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:09,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:33:09,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057842823] [2020-12-22 07:33:09,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:33:09,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:09,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:33:09,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:33:09,262 INFO L87 Difference]: Start difference. First operand 5273 states and 7484 transitions. Second operand 6 states. [2020-12-22 07:33:09,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:09,974 INFO L93 Difference]: Finished difference Result 10827 states and 15481 transitions. [2020-12-22 07:33:09,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:33:09,975 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-12-22 07:33:09,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:10,021 INFO L225 Difference]: With dead ends: 10827 [2020-12-22 07:33:10,021 INFO L226 Difference]: Without dead ends: 9329 [2020-12-22 07:33:10,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:33:10,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9329 states. [2020-12-22 07:33:10,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9329 to 6769. [2020-12-22 07:33:10,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6769 states. [2020-12-22 07:33:10,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6769 states to 6769 states and 9612 transitions. [2020-12-22 07:33:10,660 INFO L78 Accepts]: Start accepts. Automaton has 6769 states and 9612 transitions. Word has length 77 [2020-12-22 07:33:10,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:10,660 INFO L481 AbstractCegarLoop]: Abstraction has 6769 states and 9612 transitions. [2020-12-22 07:33:10,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:33:10,661 INFO L276 IsEmpty]: Start isEmpty. Operand 6769 states and 9612 transitions. [2020-12-22 07:33:10,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 07:33:10,664 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:10,664 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:33:10,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 07:33:10,665 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:10,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:10,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1033264429, now seen corresponding path program 1 times [2020-12-22 07:33:10,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:10,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013916454] [2020-12-22 07:33:10,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:10,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:10,779 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 07:33:10,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013916454] [2020-12-22 07:33:10,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:10,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:33:10,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128700047] [2020-12-22 07:33:10,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:33:10,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:10,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:33:10,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:33:10,782 INFO L87 Difference]: Start difference. First operand 6769 states and 9612 transitions. Second operand 6 states. [2020-12-22 07:33:11,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:11,526 INFO L93 Difference]: Finished difference Result 11443 states and 16377 transitions. [2020-12-22 07:33:11,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:33:11,526 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-12-22 07:33:11,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:11,551 INFO L225 Difference]: With dead ends: 11443 [2020-12-22 07:33:11,551 INFO L226 Difference]: Without dead ends: 10385 [2020-12-22 07:33:11,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:33:11,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10385 states. [2020-12-22 07:33:12,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10385 to 7825. [2020-12-22 07:33:12,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7825 states. [2020-12-22 07:33:12,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7825 states to 7825 states and 11132 transitions. [2020-12-22 07:33:12,297 INFO L78 Accepts]: Start accepts. Automaton has 7825 states and 11132 transitions. Word has length 79 [2020-12-22 07:33:12,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:12,297 INFO L481 AbstractCegarLoop]: Abstraction has 7825 states and 11132 transitions. [2020-12-22 07:33:12,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:33:12,298 INFO L276 IsEmpty]: Start isEmpty. Operand 7825 states and 11132 transitions. [2020-12-22 07:33:12,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 07:33:12,301 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:12,302 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:33:12,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 07:33:12,302 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:12,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:12,305 INFO L82 PathProgramCache]: Analyzing trace with hash -2142307542, now seen corresponding path program 1 times [2020-12-22 07:33:12,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:12,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617581080] [2020-12-22 07:33:12,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:12,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:12,368 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:33:12,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617581080] [2020-12-22 07:33:12,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:12,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:33:12,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318589630] [2020-12-22 07:33:12,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:33:12,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:12,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:33:12,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:33:12,370 INFO L87 Difference]: Start difference. First operand 7825 states and 11132 transitions. Second operand 3 states. [2020-12-22 07:33:12,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:12,746 INFO L93 Difference]: Finished difference Result 13662 states and 19524 transitions. [2020-12-22 07:33:12,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:33:12,747 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-22 07:33:12,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:12,759 INFO L225 Difference]: With dead ends: 13662 [2020-12-22 07:33:12,760 INFO L226 Difference]: Without dead ends: 5868 [2020-12-22 07:33:12,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:33:12,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5868 states. [2020-12-22 07:33:13,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5868 to 5866. [2020-12-22 07:33:13,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5866 states. [2020-12-22 07:33:13,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5866 states to 5866 states and 8333 transitions. [2020-12-22 07:33:13,203 INFO L78 Accepts]: Start accepts. Automaton has 5866 states and 8333 transitions. Word has length 79 [2020-12-22 07:33:13,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:13,204 INFO L481 AbstractCegarLoop]: Abstraction has 5866 states and 8333 transitions. [2020-12-22 07:33:13,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:33:13,204 INFO L276 IsEmpty]: Start isEmpty. Operand 5866 states and 8333 transitions. [2020-12-22 07:33:13,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 07:33:13,207 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:13,207 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:33:13,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 07:33:13,208 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:13,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:13,209 INFO L82 PathProgramCache]: Analyzing trace with hash -848547533, now seen corresponding path program 1 times [2020-12-22 07:33:13,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:13,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034469638] [2020-12-22 07:33:13,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:13,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:13,343 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:33:13,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034469638] [2020-12-22 07:33:13,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:13,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:33:13,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093641177] [2020-12-22 07:33:13,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:33:13,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:13,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:33:13,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:33:13,346 INFO L87 Difference]: Start difference. First operand 5866 states and 8333 transitions. Second operand 3 states. [2020-12-22 07:33:13,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:13,557 INFO L93 Difference]: Finished difference Result 8774 states and 12471 transitions. [2020-12-22 07:33:13,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:33:13,558 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-22 07:33:13,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:13,566 INFO L225 Difference]: With dead ends: 8774 [2020-12-22 07:33:13,566 INFO L226 Difference]: Without dead ends: 2964 [2020-12-22 07:33:13,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:33:13,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2020-12-22 07:33:13,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 2962. [2020-12-22 07:33:13,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2962 states. [2020-12-22 07:33:13,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2962 states to 2962 states and 4153 transitions. [2020-12-22 07:33:13,741 INFO L78 Accepts]: Start accepts. Automaton has 2962 states and 4153 transitions. Word has length 80 [2020-12-22 07:33:13,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:13,742 INFO L481 AbstractCegarLoop]: Abstraction has 2962 states and 4153 transitions. [2020-12-22 07:33:13,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:33:13,742 INFO L276 IsEmpty]: Start isEmpty. Operand 2962 states and 4153 transitions. [2020-12-22 07:33:13,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 07:33:13,744 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:13,744 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:33:13,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 07:33:13,745 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:13,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:13,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1967822743, now seen corresponding path program 1 times [2020-12-22 07:33:13,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:13,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820473193] [2020-12-22 07:33:13,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:13,952 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:33:13,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820473193] [2020-12-22 07:33:13,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347257404] [2020-12-22 07:33:13,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:33:14,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:14,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 07:33:14,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:33:14,447 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 07:33:14,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:33:14,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 12 [2020-12-22 07:33:14,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532766699] [2020-12-22 07:33:14,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 07:33:14,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:14,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 07:33:14,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-12-22 07:33:14,450 INFO L87 Difference]: Start difference. First operand 2962 states and 4153 transitions. Second operand 12 states. [2020-12-22 07:33:17,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:17,815 INFO L93 Difference]: Finished difference Result 19908 states and 27500 transitions. [2020-12-22 07:33:17,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-12-22 07:33:17,816 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 80 [2020-12-22 07:33:17,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:17,853 INFO L225 Difference]: With dead ends: 19908 [2020-12-22 07:33:17,853 INFO L226 Difference]: Without dead ends: 17002 [2020-12-22 07:33:17,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=343, Invalid=1379, Unknown=0, NotChecked=0, Total=1722 [2020-12-22 07:33:17,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17002 states. [2020-12-22 07:33:18,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17002 to 10036. [2020-12-22 07:33:18,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10036 states. [2020-12-22 07:33:18,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10036 states to 10036 states and 13594 transitions. [2020-12-22 07:33:18,672 INFO L78 Accepts]: Start accepts. Automaton has 10036 states and 13594 transitions. Word has length 80 [2020-12-22 07:33:18,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:18,672 INFO L481 AbstractCegarLoop]: Abstraction has 10036 states and 13594 transitions. [2020-12-22 07:33:18,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 07:33:18,673 INFO L276 IsEmpty]: Start isEmpty. Operand 10036 states and 13594 transitions. [2020-12-22 07:33:18,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 07:33:18,675 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:18,675 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:33:18,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 07:33:18,889 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:18,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:18,890 INFO L82 PathProgramCache]: Analyzing trace with hash -907232945, now seen corresponding path program 1 times [2020-12-22 07:33:18,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:18,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652624578] [2020-12-22 07:33:18,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:18,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:19,129 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:33:19,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652624578] [2020-12-22 07:33:19,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347040947] [2020-12-22 07:33:19,130 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 07:33:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:19,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 07:33:19,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:33:19,477 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 07:33:19,733 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:33:19,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:33:19,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-22 07:33:19,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218161527] [2020-12-22 07:33:19,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 07:33:19,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:19,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 07:33:19,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-12-22 07:33:19,736 INFO L87 Difference]: Start difference. First operand 10036 states and 13594 transitions. Second operand 17 states. [2020-12-22 07:33:34,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:34,117 INFO L93 Difference]: Finished difference Result 116994 states and 156738 transitions. [2020-12-22 07:33:34,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2020-12-22 07:33:34,118 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 81 [2020-12-22 07:33:34,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:34,378 INFO L225 Difference]: With dead ends: 116994 [2020-12-22 07:33:34,378 INFO L226 Difference]: Without dead ends: 107815 [2020-12-22 07:33:34,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3764 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1720, Invalid=8992, Unknown=0, NotChecked=0, Total=10712 [2020-12-22 07:33:34,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107815 states. [2020-12-22 07:33:39,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107815 to 50345. [2020-12-22 07:33:39,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50345 states. [2020-12-22 07:33:39,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50345 states to 50345 states and 67215 transitions. [2020-12-22 07:33:39,855 INFO L78 Accepts]: Start accepts. Automaton has 50345 states and 67215 transitions. Word has length 81 [2020-12-22 07:33:39,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:39,855 INFO L481 AbstractCegarLoop]: Abstraction has 50345 states and 67215 transitions. [2020-12-22 07:33:39,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 07:33:39,855 INFO L276 IsEmpty]: Start isEmpty. Operand 50345 states and 67215 transitions. [2020-12-22 07:33:39,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 07:33:39,861 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:39,861 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:33:40,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 07:33:40,075 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:40,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:40,076 INFO L82 PathProgramCache]: Analyzing trace with hash 970030519, now seen corresponding path program 1 times [2020-12-22 07:33:40,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:40,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621406580] [2020-12-22 07:33:40,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:40,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:40,151 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:33:40,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621406580] [2020-12-22 07:33:40,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:40,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:33:40,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025947651] [2020-12-22 07:33:40,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:33:40,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:40,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:33:40,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:33:40,154 INFO L87 Difference]: Start difference. First operand 50345 states and 67215 transitions. Second operand 3 states. [2020-12-22 07:33:42,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:42,654 INFO L93 Difference]: Finished difference Result 73011 states and 97619 transitions. [2020-12-22 07:33:42,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:33:42,655 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-12-22 07:33:42,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:42,692 INFO L225 Difference]: With dead ends: 73011 [2020-12-22 07:33:42,692 INFO L226 Difference]: Without dead ends: 26727 [2020-12-22 07:33:42,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:33:42,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26727 states. [2020-12-22 07:33:45,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26727 to 26443. [2020-12-22 07:33:45,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26443 states. [2020-12-22 07:33:45,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26443 states to 26443 states and 34582 transitions. [2020-12-22 07:33:45,182 INFO L78 Accepts]: Start accepts. Automaton has 26443 states and 34582 transitions. Word has length 81 [2020-12-22 07:33:45,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:45,182 INFO L481 AbstractCegarLoop]: Abstraction has 26443 states and 34582 transitions. [2020-12-22 07:33:45,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:33:45,182 INFO L276 IsEmpty]: Start isEmpty. Operand 26443 states and 34582 transitions. [2020-12-22 07:33:45,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 07:33:45,185 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:45,185 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:33:45,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 07:33:45,185 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:45,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:45,186 INFO L82 PathProgramCache]: Analyzing trace with hash 696342807, now seen corresponding path program 1 times [2020-12-22 07:33:45,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:45,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201856233] [2020-12-22 07:33:45,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:45,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:45,253 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:33:45,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201856233] [2020-12-22 07:33:45,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:45,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:33:45,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15106015] [2020-12-22 07:33:45,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:33:45,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:45,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:33:45,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:33:45,259 INFO L87 Difference]: Start difference. First operand 26443 states and 34582 transitions. Second operand 3 states. [2020-12-22 07:33:46,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:46,637 INFO L93 Difference]: Finished difference Result 40701 states and 53415 transitions. [2020-12-22 07:33:46,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:33:46,638 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-12-22 07:33:46,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:46,659 INFO L225 Difference]: With dead ends: 40701 [2020-12-22 07:33:46,660 INFO L226 Difference]: Without dead ends: 17417 [2020-12-22 07:33:46,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:33:46,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17417 states. [2020-12-22 07:33:48,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17417 to 17415. [2020-12-22 07:33:48,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17415 states. [2020-12-22 07:33:48,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17415 states to 17415 states and 22267 transitions. [2020-12-22 07:33:48,194 INFO L78 Accepts]: Start accepts. Automaton has 17415 states and 22267 transitions. Word has length 81 [2020-12-22 07:33:48,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:48,195 INFO L481 AbstractCegarLoop]: Abstraction has 17415 states and 22267 transitions. [2020-12-22 07:33:48,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:33:48,195 INFO L276 IsEmpty]: Start isEmpty. Operand 17415 states and 22267 transitions. [2020-12-22 07:33:48,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 07:33:48,197 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:48,197 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:33:48,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 07:33:48,198 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:48,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:48,198 INFO L82 PathProgramCache]: Analyzing trace with hash 336401983, now seen corresponding path program 1 times [2020-12-22 07:33:48,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:48,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501889221] [2020-12-22 07:33:48,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:48,302 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 07:33:48,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501889221] [2020-12-22 07:33:48,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:48,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:33:48,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723029879] [2020-12-22 07:33:48,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:33:48,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:48,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:33:48,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:33:48,305 INFO L87 Difference]: Start difference. First operand 17415 states and 22267 transitions. Second operand 6 states. [2020-12-22 07:33:50,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:50,382 INFO L93 Difference]: Finished difference Result 31859 states and 40867 transitions. [2020-12-22 07:33:50,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:33:50,382 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2020-12-22 07:33:50,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:50,397 INFO L225 Difference]: With dead ends: 31859 [2020-12-22 07:33:50,397 INFO L226 Difference]: Without dead ends: 14572 [2020-12-22 07:33:50,406 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 07:33:50,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14572 states. [2020-12-22 07:33:51,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14572 to 14572. [2020-12-22 07:33:51,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14572 states. [2020-12-22 07:33:51,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14572 states to 14572 states and 18383 transitions. [2020-12-22 07:33:51,512 INFO L78 Accepts]: Start accepts. Automaton has 14572 states and 18383 transitions. Word has length 81 [2020-12-22 07:33:51,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:51,512 INFO L481 AbstractCegarLoop]: Abstraction has 14572 states and 18383 transitions. [2020-12-22 07:33:51,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:33:51,513 INFO L276 IsEmpty]: Start isEmpty. Operand 14572 states and 18383 transitions. [2020-12-22 07:33:51,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 07:33:51,514 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:51,514 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:33:51,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 07:33:51,515 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:51,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:51,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1734457217, now seen corresponding path program 1 times [2020-12-22 07:33:51,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:51,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620618780] [2020-12-22 07:33:51,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:51,583 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 07:33:51,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620618780] [2020-12-22 07:33:51,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:51,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:33:51,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703420131] [2020-12-22 07:33:51,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:33:51,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:51,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:33:51,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:33:51,586 INFO L87 Difference]: Start difference. First operand 14572 states and 18383 transitions. Second operand 6 states. [2020-12-22 07:33:52,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:52,928 INFO L93 Difference]: Finished difference Result 25317 states and 32048 transitions. [2020-12-22 07:33:52,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:33:52,929 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2020-12-22 07:33:52,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:52,941 INFO L225 Difference]: With dead ends: 25317 [2020-12-22 07:33:52,941 INFO L226 Difference]: Without dead ends: 10899 [2020-12-22 07:33:52,949 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 07:33:52,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10899 states. [2020-12-22 07:33:53,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10899 to 10899. [2020-12-22 07:33:53,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10899 states. [2020-12-22 07:33:53,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10899 states to 10899 states and 13605 transitions. [2020-12-22 07:33:53,962 INFO L78 Accepts]: Start accepts. Automaton has 10899 states and 13605 transitions. Word has length 81 [2020-12-22 07:33:53,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:53,962 INFO L481 AbstractCegarLoop]: Abstraction has 10899 states and 13605 transitions. [2020-12-22 07:33:53,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:33:53,962 INFO L276 IsEmpty]: Start isEmpty. Operand 10899 states and 13605 transitions. [2020-12-22 07:33:53,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 07:33:53,964 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:53,965 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:33:53,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 07:33:53,965 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:53,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:53,966 INFO L82 PathProgramCache]: Analyzing trace with hash -980482721, now seen corresponding path program 1 times [2020-12-22 07:33:53,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:53,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244829432] [2020-12-22 07:33:53,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:53,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:54,043 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-22 07:33:54,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244829432] [2020-12-22 07:33:54,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:54,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:33:54,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460969171] [2020-12-22 07:33:54,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:33:54,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:54,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:33:54,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:33:54,049 INFO L87 Difference]: Start difference. First operand 10899 states and 13605 transitions. Second operand 6 states. [2020-12-22 07:33:54,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:54,970 INFO L93 Difference]: Finished difference Result 19254 states and 24166 transitions. [2020-12-22 07:33:54,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:33:54,970 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2020-12-22 07:33:54,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:54,980 INFO L225 Difference]: With dead ends: 19254 [2020-12-22 07:33:54,980 INFO L226 Difference]: Without dead ends: 8427 [2020-12-22 07:33:54,985 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 07:33:54,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8427 states. [2020-12-22 07:33:55,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8427 to 8427. [2020-12-22 07:33:55,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8427 states. [2020-12-22 07:33:55,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8427 states to 8427 states and 10486 transitions. [2020-12-22 07:33:55,637 INFO L78 Accepts]: Start accepts. Automaton has 8427 states and 10486 transitions. Word has length 81 [2020-12-22 07:33:55,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:55,637 INFO L481 AbstractCegarLoop]: Abstraction has 8427 states and 10486 transitions. [2020-12-22 07:33:55,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:33:55,637 INFO L276 IsEmpty]: Start isEmpty. Operand 8427 states and 10486 transitions. [2020-12-22 07:33:55,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 07:33:55,639 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:55,639 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:33:55,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 07:33:55,640 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:55,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:55,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1098414210, now seen corresponding path program 1 times [2020-12-22 07:33:55,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:55,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44537017] [2020-12-22 07:33:55,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:55,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:55,869 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:33:55,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44537017] [2020-12-22 07:33:55,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563967366] [2020-12-22 07:33:55,869 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 07:33:55,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:55,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-22 07:33:56,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:33:56,183 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 07:33:56,499 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:33:56,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:33:56,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-22 07:33:56,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347059993] [2020-12-22 07:33:56,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 07:33:56,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:56,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 07:33:56,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-12-22 07:33:56,501 INFO L87 Difference]: Start difference. First operand 8427 states and 10486 transitions. Second operand 17 states. [2020-12-22 07:34:00,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:34:00,965 INFO L93 Difference]: Finished difference Result 41229 states and 50926 transitions. [2020-12-22 07:34:00,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-22 07:34:00,965 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 82 [2020-12-22 07:34:00,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:34:01,001 INFO L225 Difference]: With dead ends: 41229 [2020-12-22 07:34:01,002 INFO L226 Difference]: Without dead ends: 34208 [2020-12-22 07:34:01,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=317, Invalid=943, Unknown=0, NotChecked=0, Total=1260 [2020-12-22 07:34:01,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34208 states. [2020-12-22 07:34:03,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34208 to 21346. [2020-12-22 07:34:03,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21346 states. [2020-12-22 07:34:03,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21346 states to 21346 states and 26535 transitions. [2020-12-22 07:34:03,296 INFO L78 Accepts]: Start accepts. Automaton has 21346 states and 26535 transitions. Word has length 82 [2020-12-22 07:34:03,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:34:03,296 INFO L481 AbstractCegarLoop]: Abstraction has 21346 states and 26535 transitions. [2020-12-22 07:34:03,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 07:34:03,296 INFO L276 IsEmpty]: Start isEmpty. Operand 21346 states and 26535 transitions. [2020-12-22 07:34:03,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 07:34:03,299 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:34:03,299 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:34:03,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-12-22 07:34:03,515 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:34:03,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:34:03,516 INFO L82 PathProgramCache]: Analyzing trace with hash 201020932, now seen corresponding path program 1 times [2020-12-22 07:34:03,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:34:03,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133957209] [2020-12-22 07:34:03,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:34:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:03,610 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 07:34:03,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133957209] [2020-12-22 07:34:03,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:34:03,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:34:03,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491626150] [2020-12-22 07:34:03,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:34:03,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:34:03,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:34:03,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:34:03,612 INFO L87 Difference]: Start difference. First operand 21346 states and 26535 transitions. Second operand 7 states. [2020-12-22 07:34:06,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:34:06,097 INFO L93 Difference]: Finished difference Result 44225 states and 55116 transitions. [2020-12-22 07:34:06,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:34:06,098 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 82 [2020-12-22 07:34:06,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:34:06,126 INFO L225 Difference]: With dead ends: 44225 [2020-12-22 07:34:06,126 INFO L226 Difference]: Without dead ends: 23107 [2020-12-22 07:34:06,138 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 07:34:06,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23107 states. [2020-12-22 07:34:08,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23107 to 23105. [2020-12-22 07:34:08,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23105 states. [2020-12-22 07:34:08,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23105 states to 23105 states and 28596 transitions. [2020-12-22 07:34:08,698 INFO L78 Accepts]: Start accepts. Automaton has 23105 states and 28596 transitions. Word has length 82 [2020-12-22 07:34:08,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:34:08,698 INFO L481 AbstractCegarLoop]: Abstraction has 23105 states and 28596 transitions. [2020-12-22 07:34:08,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:34:08,698 INFO L276 IsEmpty]: Start isEmpty. Operand 23105 states and 28596 transitions. [2020-12-22 07:34:08,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 07:34:08,700 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:34:08,701 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:34:08,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 07:34:08,701 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:34:08,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:34:08,701 INFO L82 PathProgramCache]: Analyzing trace with hash -2091708008, now seen corresponding path program 1 times [2020-12-22 07:34:08,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:34:08,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251738472] [2020-12-22 07:34:08,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:34:08,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:10,079 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:34:10,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251738472] [2020-12-22 07:34:10,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697638684] [2020-12-22 07:34:10,079 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 07:34:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:10,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-22 07:34:10,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:34:10,703 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 07:34:11,072 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 33 [2020-12-22 07:34:11,596 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 07:34:11,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:34:11,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 13] total 39 [2020-12-22 07:34:11,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358269521] [2020-12-22 07:34:11,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-12-22 07:34:11,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:34:11,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-12-22 07:34:11,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1388, Unknown=0, NotChecked=0, Total=1482 [2020-12-22 07:34:11,598 INFO L87 Difference]: Start difference. First operand 23105 states and 28596 transitions. Second operand 39 states. [2020-12-22 07:34:12,057 WARN L197 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 92 [2020-12-22 07:34:12,714 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 27 [2020-12-22 07:34:12,988 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2020-12-22 07:34:13,195 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-12-22 07:34:13,429 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 35 [2020-12-22 07:34:13,712 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2020-12-22 07:34:14,088 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-12-22 07:34:14,385 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-12-22 07:34:14,735 WARN L197 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2020-12-22 07:34:15,063 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-12-22 07:34:15,434 WARN L197 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 72 [2020-12-22 07:34:15,829 WARN L197 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2020-12-22 07:34:16,302 WARN L197 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 80 [2020-12-22 07:34:16,858 WARN L197 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 96 [2020-12-22 07:34:17,238 WARN L197 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2020-12-22 07:34:17,656 WARN L197 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2020-12-22 07:34:17,965 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2020-12-22 07:34:18,228 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2020-12-22 07:34:18,524 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-12-22 07:34:18,810 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-12-22 07:34:19,418 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-12-22 07:34:19,886 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-12-22 07:34:20,274 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-12-22 07:34:20,590 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2020-12-22 07:34:20,932 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-12-22 07:34:21,899 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2020-12-22 07:34:22,281 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-12-22 07:34:23,189 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2020-12-22 07:34:23,357 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2020-12-22 07:34:24,942 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2020-12-22 07:34:25,381 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-12-22 07:34:25,609 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-12-22 07:34:25,922 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-12-22 07:34:26,305 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-12-22 07:34:26,525 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-12-22 07:34:26,829 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-12-22 07:34:27,207 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-12-22 07:34:27,502 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-12-22 07:34:32,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:34:32,313 INFO L93 Difference]: Finished difference Result 45430 states and 57512 transitions. [2020-12-22 07:34:32,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-12-22 07:34:32,314 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 83 [2020-12-22 07:34:32,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:34:32,349 INFO L225 Difference]: With dead ends: 45430 [2020-12-22 07:34:32,349 INFO L226 Difference]: Without dead ends: 35986 [2020-12-22 07:34:32,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1980 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=1390, Invalid=8312, Unknown=0, NotChecked=0, Total=9702 [2020-12-22 07:34:32,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35986 states. [2020-12-22 07:34:34,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35986 to 20392. [2020-12-22 07:34:34,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20392 states. [2020-12-22 07:34:34,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20392 states to 20392 states and 25229 transitions. [2020-12-22 07:34:34,854 INFO L78 Accepts]: Start accepts. Automaton has 20392 states and 25229 transitions. Word has length 83 [2020-12-22 07:34:34,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:34:34,855 INFO L481 AbstractCegarLoop]: Abstraction has 20392 states and 25229 transitions. [2020-12-22 07:34:34,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-12-22 07:34:34,855 INFO L276 IsEmpty]: Start isEmpty. Operand 20392 states and 25229 transitions. [2020-12-22 07:34:34,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 07:34:34,856 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:34:34,856 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:34:35,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:34:35,060 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:34:35,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:34:35,061 INFO L82 PathProgramCache]: Analyzing trace with hash -441022536, now seen corresponding path program 1 times [2020-12-22 07:34:35,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:34:35,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242039557] [2020-12-22 07:34:35,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:34:35,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:36,802 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:34:36,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242039557] [2020-12-22 07:34:36,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194696357] [2020-12-22 07:34:36,803 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 07:34:36,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:36,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 57 conjunts are in the unsatisfiable core [2020-12-22 07:34:36,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:34:37,171 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-12-22 07:34:38,914 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 32 [2020-12-22 07:34:39,877 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2020-12-22 07:34:40,493 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2020-12-22 07:34:41,075 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-12-22 07:34:42,044 WARN L197 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 70 [2020-12-22 07:34:42,092 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-12-22 07:34:44,056 WARN L197 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 70 [2020-12-22 07:34:44,087 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-12-22 07:34:44,107 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-22 07:34:44,210 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:44,266 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 22 disjuncts [2020-12-22 07:34:44,507 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:45,378 INFO L757 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:46,340 INFO L757 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:48,062 INFO L757 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:49,837 INFO L757 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:51,933 INFO L757 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:54,190 INFO L757 QuantifierPusher]: Run 70 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:34:56,964 INFO L757 QuantifierPusher]: Run 80 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:35:00,267 INFO L757 QuantifierPusher]: Run 90 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:35:04,180 INFO L757 QuantifierPusher]: Run 100 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:35:08,880 INFO L757 QuantifierPusher]: Run 110 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:35:09,742 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: variable got div captured [2020-12-22 07:35:09,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 07:35:09,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-12-22 07:35:09,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713137267] [2020-12-22 07:35:09,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-12-22 07:35:09,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:35:09,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-12-22 07:35:09,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=2548, Unknown=0, NotChecked=0, Total=2862 [2020-12-22 07:35:09,745 INFO L87 Difference]: Start difference. First operand 20392 states and 25229 transitions. Second operand 29 states. [2020-12-22 07:35:10,190 WARN L197 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 101 [2020-12-22 07:35:11,140 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-12-22 07:35:11,485 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-12-22 07:35:11,702 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-12-22 07:35:11,970 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-12-22 07:35:12,252 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2020-12-22 07:35:12,612 WARN L197 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2020-12-22 07:35:12,969 WARN L197 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 74 [2020-12-22 07:35:13,399 WARN L197 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 89 [2020-12-22 07:35:13,814 WARN L197 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 84 [2020-12-22 07:35:14,055 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-12-22 07:35:14,296 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-12-22 07:35:15,244 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-12-22 07:35:20,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:35:20,782 INFO L93 Difference]: Finished difference Result 39451 states and 49875 transitions. [2020-12-22 07:35:20,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-22 07:35:20,783 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 83 [2020-12-22 07:35:20,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:35:20,819 INFO L225 Difference]: With dead ends: 39451 [2020-12-22 07:35:20,819 INFO L226 Difference]: Without dead ends: 37655 [2020-12-22 07:35:20,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1518 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=733, Invalid=5587, Unknown=0, NotChecked=0, Total=6320 [2020-12-22 07:35:20,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37655 states. [2020-12-22 07:35:23,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37655 to 20375. [2020-12-22 07:35:23,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20375 states. [2020-12-22 07:35:23,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20375 states to 20375 states and 25229 transitions. [2020-12-22 07:35:23,271 INFO L78 Accepts]: Start accepts. Automaton has 20375 states and 25229 transitions. Word has length 83 [2020-12-22 07:35:23,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:35:23,271 INFO L481 AbstractCegarLoop]: Abstraction has 20375 states and 25229 transitions. [2020-12-22 07:35:23,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-12-22 07:35:23,271 INFO L276 IsEmpty]: Start isEmpty. Operand 20375 states and 25229 transitions. [2020-12-22 07:35:23,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 07:35:23,273 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:35:23,273 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:35:23,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-22 07:35:23,479 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:35:23,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:35:23,479 INFO L82 PathProgramCache]: Analyzing trace with hash 489273275, now seen corresponding path program 1 times [2020-12-22 07:35:23,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:35:23,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991796326] [2020-12-22 07:35:23,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:35:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:35:25,385 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:35:25,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991796326] [2020-12-22 07:35:25,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133807487] [2020-12-22 07:35:25,386 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 07:35:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:35:25,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-22 07:35:25,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:35:26,188 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 07:35:26,487 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 27 [2020-12-22 07:35:27,104 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:35:27,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:35:27,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 13] total 40 [2020-12-22 07:35:27,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602895582] [2020-12-22 07:35:27,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-12-22 07:35:27,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:35:27,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-12-22 07:35:27,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1452, Unknown=0, NotChecked=0, Total=1560 [2020-12-22 07:35:27,107 INFO L87 Difference]: Start difference. First operand 20375 states and 25229 transitions. Second operand 40 states. [2020-12-22 07:35:27,711 WARN L197 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 100 [2020-12-22 07:35:28,549 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 28 [2020-12-22 07:35:28,774 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2020-12-22 07:35:28,979 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 24 [2020-12-22 07:35:29,187 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 26 [2020-12-22 07:35:29,414 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 31 [2020-12-22 07:35:29,844 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 33 [2020-12-22 07:35:30,166 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 38 [2020-12-22 07:35:30,523 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2020-12-22 07:35:30,964 WARN L197 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 72 [2020-12-22 07:35:31,382 WARN L197 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 66 [2020-12-22 07:35:31,915 WARN L197 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 80 [2020-12-22 07:35:32,605 WARN L197 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 94 [2020-12-22 07:35:33,492 WARN L197 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 104 [2020-12-22 07:35:34,309 WARN L197 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 98 [2020-12-22 07:35:34,762 WARN L197 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 71 [2020-12-22 07:35:35,200 WARN L197 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 71 [2020-12-22 07:35:35,577 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2020-12-22 07:35:36,054 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2020-12-22 07:35:36,428 WARN L197 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2020-12-22 07:35:36,834 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2020-12-22 07:35:37,129 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-12-22 07:35:37,447 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2020-12-22 07:35:37,867 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2020-12-22 07:35:38,191 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2020-12-22 07:35:38,504 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-12-22 07:35:38,895 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-12-22 07:35:39,376 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-12-22 07:35:39,874 WARN L197 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2020-12-22 07:35:40,221 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 23 [2020-12-22 07:35:40,675 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-12-22 07:35:41,008 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-12-22 07:35:41,367 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2020-12-22 07:35:41,598 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2020-12-22 07:35:41,959 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-12-22 07:35:42,343 WARN L197 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2020-12-22 07:35:42,720 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 28 [2020-12-22 07:35:43,053 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-12-22 07:35:43,558 WARN L197 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2020-12-22 07:35:44,177 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2020-12-22 07:35:44,545 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2020-12-22 07:35:45,170 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2020-12-22 07:35:45,538 WARN L197 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 44 [2020-12-22 07:35:46,516 WARN L197 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2020-12-22 07:35:47,046 WARN L197 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 62 [2020-12-22 07:35:47,895 WARN L197 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 79 [2020-12-22 07:35:48,514 WARN L197 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 76 [2020-12-22 07:35:48,987 WARN L197 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2020-12-22 07:35:49,256 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-12-22 07:35:49,502 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2020-12-22 07:35:49,888 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2020-12-22 07:35:50,446 WARN L197 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2020-12-22 07:35:51,163 WARN L197 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 88 [2020-12-22 07:35:51,584 WARN L197 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2020-12-22 07:35:51,907 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2020-12-22 07:35:52,371 WARN L197 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2020-12-22 07:35:52,648 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-12-22 07:35:53,068 WARN L197 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2020-12-22 07:35:53,972 WARN L197 SmtUtils]: Spent 695.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 100 [2020-12-22 07:35:54,221 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2020-12-22 07:35:54,698 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-12-22 07:35:55,049 WARN L197 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2020-12-22 07:35:55,733 WARN L197 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2020-12-22 07:35:57,172 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 38 [2020-12-22 07:35:59,457 WARN L197 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2020-12-22 07:35:59,981 WARN L197 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2020-12-22 07:36:03,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:36:03,328 INFO L93 Difference]: Finished difference Result 51460 states and 64980 transitions. [2020-12-22 07:36:03,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2020-12-22 07:36:03,331 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 83 [2020-12-22 07:36:03,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:36:03,378 INFO L225 Difference]: With dead ends: 51460 [2020-12-22 07:36:03,378 INFO L226 Difference]: Without dead ends: 42896 [2020-12-22 07:36:03,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3121 ImplicationChecksByTransitivity, 26.3s TimeCoverageRelationStatistics Valid=2278, Invalid=10832, Unknown=0, NotChecked=0, Total=13110 [2020-12-22 07:36:03,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42896 states. [2020-12-22 07:36:06,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42896 to 18308. [2020-12-22 07:36:06,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18308 states. [2020-12-22 07:36:06,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18308 states to 18308 states and 22757 transitions. [2020-12-22 07:36:06,143 INFO L78 Accepts]: Start accepts. Automaton has 18308 states and 22757 transitions. Word has length 83 [2020-12-22 07:36:06,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:36:06,144 INFO L481 AbstractCegarLoop]: Abstraction has 18308 states and 22757 transitions. [2020-12-22 07:36:06,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-12-22 07:36:06,144 INFO L276 IsEmpty]: Start isEmpty. Operand 18308 states and 22757 transitions. [2020-12-22 07:36:06,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 07:36:06,145 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:36:06,146 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:36:06,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-12-22 07:36:06,360 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:36:06,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:36:06,361 INFO L82 PathProgramCache]: Analyzing trace with hash -15090348, now seen corresponding path program 1 times [2020-12-22 07:36:06,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:36:06,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189695095] [2020-12-22 07:36:06,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:36:06,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:36:06,953 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2020-12-22 07:36:07,131 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2020-12-22 07:36:07,278 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 23 [2020-12-22 07:36:07,424 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2020-12-22 07:36:07,606 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2020-12-22 07:36:08,524 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:36:08,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189695095] [2020-12-22 07:36:08,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303693947] [2020-12-22 07:36:08,525 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 07:36:08,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:36:08,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-22 07:36:08,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:36:09,599 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 07:36:10,319 WARN L197 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 50 [2020-12-22 07:36:10,594 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-12-22 07:36:11,040 WARN L197 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2020-12-22 07:36:11,365 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-12-22 07:36:11,823 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-12-22 07:36:12,269 WARN L197 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2020-12-22 07:36:12,282 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 07:36:12,412 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 07:36:12,511 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 07:36:12,603 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 07:36:12,657 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:36:12,778 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 07:36:12,880 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 07:36:13,170 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 07:36:14,146 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 07:36:19,706 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:36:20,342 INFO L757 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:36:21,330 INFO L757 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:36:22,668 INFO L757 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:36:24,669 INFO L757 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:36:26,757 INFO L757 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:36:29,351 INFO L757 QuantifierPusher]: Run 70 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:36:32,386 INFO L757 QuantifierPusher]: Run 80 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:36:35,843 INFO L757 QuantifierPusher]: Run 90 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:36:39,808 INFO L757 QuantifierPusher]: Run 100 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:36:44,221 INFO L757 QuantifierPusher]: Run 110 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:36:49,567 INFO L757 QuantifierPusher]: Run 120 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 07:36:51,283 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts