/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/locks/test_locks_11.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-21 23:17:22,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-21 23:17:22,391 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-21 23:17:22,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-21 23:17:22,546 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-21 23:17:22,602 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-21 23:17:22,602 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-21 23:17:22,608 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-21 23:17:22,608 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-21 23:17:22,608 INFO L138 SettingsManager]: * Use SBE=true [2020-12-21 23:17:22,609 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-21 23:17:22,609 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-21 23:17:22,609 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-21 23:17:22,609 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-21 23:17:22,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-21 23:17:22,611 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-21 23:17:22,611 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-21 23:17:22,611 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-21 23:17:22,612 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-21 23:17:22,612 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-21 23:17:22,612 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-21 23:17:22,612 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-21 23:17:22,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-21 23:17:22,613 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-21 23:17:22,613 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-21 23:17:22,613 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-21 23:17:22,614 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-21 23:17:22,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-21 23:17:22,614 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-21 23:17:22,614 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-21 23:17:22,614 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-21 23:17:23,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-21 23:17:23,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-21 23:17:23,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-21 23:17:23,112 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-21 23:17:23,113 INFO L275 PluginConnector]: CDTParser initialized [2020-12-21 23:17:23,114 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_11.c [2020-12-21 23:17:23,212 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90f78ddd2/6fb20c967c744648b47171d560ef3f06/FLAG1a4bfde8c [2020-12-21 23:17:23,782 INFO L306 CDTParser]: Found 1 translation units. [2020-12-21 23:17:23,783 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_11.c [2020-12-21 23:17:23,795 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90f78ddd2/6fb20c967c744648b47171d560ef3f06/FLAG1a4bfde8c [2020-12-21 23:17:24,121 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90f78ddd2/6fb20c967c744648b47171d560ef3f06 [2020-12-21 23:17:24,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-21 23:17:24,128 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-21 23:17:24,130 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-21 23:17:24,131 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-21 23:17:24,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-21 23:17:24,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:17:24" (1/1) ... [2020-12-21 23:17:24,138 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b22f43f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:24, skipping insertion in model container [2020-12-21 23:17:24,138 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:17:24" (1/1) ... [2020-12-21 23:17:24,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-21 23:17:24,185 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-21 23:17:24,472 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/locks/test_locks_11.c[4246,4259] [2020-12-21 23:17:24,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-21 23:17:24,497 INFO L203 MainTranslator]: Completed pre-run [2020-12-21 23:17:24,562 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/locks/test_locks_11.c[4246,4259] [2020-12-21 23:17:24,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-21 23:17:24,591 INFO L208 MainTranslator]: Completed translation [2020-12-21 23:17:24,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:24 WrapperNode [2020-12-21 23:17:24,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-21 23:17:24,594 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-21 23:17:24,594 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-21 23:17:24,595 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-21 23:17:24,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:24" (1/1) ... [2020-12-21 23:17:24,626 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:24" (1/1) ... [2020-12-21 23:17:24,669 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-21 23:17:24,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-21 23:17:24,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-21 23:17:24,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-21 23:17:24,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:24" (1/1) ... [2020-12-21 23:17:24,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:24" (1/1) ... [2020-12-21 23:17:24,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:24" (1/1) ... [2020-12-21 23:17:24,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:24" (1/1) ... [2020-12-21 23:17:24,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:24" (1/1) ... [2020-12-21 23:17:24,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:24" (1/1) ... [2020-12-21 23:17:24,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:24" (1/1) ... [2020-12-21 23:17:24,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-21 23:17:24,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-21 23:17:24,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-21 23:17:24,735 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-21 23:17:24,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:24" (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 [2020-12-21 23:17:24,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-21 23:17:24,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-21 23:17:24,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-21 23:17:24,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-21 23:17:25,271 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-21 23:17:25,272 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-21 23:17:25,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:17:25 BoogieIcfgContainer [2020-12-21 23:17:25,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-21 23:17:25,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-21 23:17:25,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-21 23:17:25,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-21 23:17:25,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:17:24" (1/3) ... [2020-12-21 23:17:25,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@436bd190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:17:25, skipping insertion in model container [2020-12-21 23:17:25,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:24" (2/3) ... [2020-12-21 23:17:25,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@436bd190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:17:25, skipping insertion in model container [2020-12-21 23:17:25,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:17:25" (3/3) ... [2020-12-21 23:17:25,284 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_11.c [2020-12-21 23:17:25,292 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-21 23:17:25,298 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-21 23:17:25,321 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-21 23:17:25,358 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-21 23:17:25,358 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-21 23:17:25,358 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-21 23:17:25,358 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-21 23:17:25,358 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-21 23:17:25,359 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-21 23:17:25,359 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-21 23:17:25,359 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-21 23:17:25,382 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-12-21 23:17:25,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-21 23:17:25,389 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:25,391 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:25,391 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:25,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:25,398 INFO L82 PathProgramCache]: Analyzing trace with hash 458919617, now seen corresponding path program 1 times [2020-12-21 23:17:25,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:25,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922314075] [2020-12-21 23:17:25,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:25,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:25,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:25,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922314075] [2020-12-21 23:17:25,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:25,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:25,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82842015] [2020-12-21 23:17:25,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:25,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:25,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:25,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:25,769 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 3 states. [2020-12-21 23:17:25,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:25,839 INFO L93 Difference]: Finished difference Result 89 states and 157 transitions. [2020-12-21 23:17:25,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:25,841 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-12-21 23:17:25,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:25,854 INFO L225 Difference]: With dead ends: 89 [2020-12-21 23:17:25,854 INFO L226 Difference]: Without dead ends: 75 [2020-12-21 23:17:25,858 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 [2020-12-21 23:17:25,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-12-21 23:17:25,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 51. [2020-12-21 23:17:25,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-21 23:17:25,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 94 transitions. [2020-12-21 23:17:25,907 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 94 transitions. Word has length 18 [2020-12-21 23:17:25,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:25,908 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 94 transitions. [2020-12-21 23:17:25,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:25,908 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 94 transitions. [2020-12-21 23:17:25,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-21 23:17:25,909 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:25,910 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:25,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-21 23:17:25,910 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:25,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:25,911 INFO L82 PathProgramCache]: Analyzing trace with hash -552197633, now seen corresponding path program 1 times [2020-12-21 23:17:25,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:25,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937496028] [2020-12-21 23:17:25,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:25,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:26,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:26,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937496028] [2020-12-21 23:17:26,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:26,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:26,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217327905] [2020-12-21 23:17:26,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:26,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:26,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:26,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:26,042 INFO L87 Difference]: Start difference. First operand 51 states and 94 transitions. Second operand 3 states. [2020-12-21 23:17:26,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:26,094 INFO L93 Difference]: Finished difference Result 124 states and 229 transitions. [2020-12-21 23:17:26,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:26,095 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-12-21 23:17:26,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:26,099 INFO L225 Difference]: With dead ends: 124 [2020-12-21 23:17:26,099 INFO L226 Difference]: Without dead ends: 75 [2020-12-21 23:17:26,103 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 [2020-12-21 23:17:26,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-12-21 23:17:26,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2020-12-21 23:17:26,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-12-21 23:17:26,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 134 transitions. [2020-12-21 23:17:26,122 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 134 transitions. Word has length 18 [2020-12-21 23:17:26,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:26,122 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 134 transitions. [2020-12-21 23:17:26,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:26,123 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 134 transitions. [2020-12-21 23:17:26,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-21 23:17:26,124 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:26,124 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:26,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-21 23:17:26,124 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:26,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:26,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1341819263, now seen corresponding path program 1 times [2020-12-21 23:17:26,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:26,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074965880] [2020-12-21 23:17:26,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:26,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:26,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074965880] [2020-12-21 23:17:26,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:26,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:26,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966400479] [2020-12-21 23:17:26,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:26,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:26,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:26,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:26,180 INFO L87 Difference]: Start difference. First operand 73 states and 134 transitions. Second operand 3 states. [2020-12-21 23:17:26,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:26,201 INFO L93 Difference]: Finished difference Result 114 states and 204 transitions. [2020-12-21 23:17:26,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:26,202 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-21 23:17:26,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:26,203 INFO L225 Difference]: With dead ends: 114 [2020-12-21 23:17:26,203 INFO L226 Difference]: Without dead ends: 78 [2020-12-21 23:17:26,204 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 [2020-12-21 23:17:26,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-21 23:17:26,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-12-21 23:17:26,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-21 23:17:26,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 136 transitions. [2020-12-21 23:17:26,214 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 136 transitions. Word has length 19 [2020-12-21 23:17:26,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:26,215 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 136 transitions. [2020-12-21 23:17:26,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:26,215 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 136 transitions. [2020-12-21 23:17:26,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-21 23:17:26,216 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:26,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:26,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-21 23:17:26,217 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:26,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:26,218 INFO L82 PathProgramCache]: Analyzing trace with hash 61955585, now seen corresponding path program 1 times [2020-12-21 23:17:26,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:26,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272846572] [2020-12-21 23:17:26,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:26,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:26,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272846572] [2020-12-21 23:17:26,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:26,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:26,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057019901] [2020-12-21 23:17:26,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:26,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:26,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:26,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:26,277 INFO L87 Difference]: Start difference. First operand 76 states and 136 transitions. Second operand 3 states. [2020-12-21 23:17:26,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:26,296 INFO L93 Difference]: Finished difference Result 145 states and 261 transitions. [2020-12-21 23:17:26,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:26,296 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-21 23:17:26,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:26,298 INFO L225 Difference]: With dead ends: 145 [2020-12-21 23:17:26,298 INFO L226 Difference]: Without dead ends: 143 [2020-12-21 23:17:26,299 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 [2020-12-21 23:17:26,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-12-21 23:17:26,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 101. [2020-12-21 23:17:26,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-12-21 23:17:26,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 181 transitions. [2020-12-21 23:17:26,319 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 181 transitions. Word has length 19 [2020-12-21 23:17:26,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:26,319 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 181 transitions. [2020-12-21 23:17:26,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:26,320 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 181 transitions. [2020-12-21 23:17:26,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-21 23:17:26,324 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:26,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:26,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-21 23:17:26,325 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:26,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:26,326 INFO L82 PathProgramCache]: Analyzing trace with hash -949161665, now seen corresponding path program 1 times [2020-12-21 23:17:26,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:26,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427715380] [2020-12-21 23:17:26,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:26,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:26,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:26,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427715380] [2020-12-21 23:17:26,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:26,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:26,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544944197] [2020-12-21 23:17:26,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:26,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:26,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:26,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:26,425 INFO L87 Difference]: Start difference. First operand 101 states and 181 transitions. Second operand 3 states. [2020-12-21 23:17:26,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:26,461 INFO L93 Difference]: Finished difference Result 241 states and 435 transitions. [2020-12-21 23:17:26,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:26,462 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-21 23:17:26,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:26,463 INFO L225 Difference]: With dead ends: 241 [2020-12-21 23:17:26,464 INFO L226 Difference]: Without dead ends: 145 [2020-12-21 23:17:26,465 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 [2020-12-21 23:17:26,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-12-21 23:17:26,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2020-12-21 23:17:26,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-12-21 23:17:26,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 255 transitions. [2020-12-21 23:17:26,478 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 255 transitions. Word has length 19 [2020-12-21 23:17:26,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:26,479 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 255 transitions. [2020-12-21 23:17:26,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:26,479 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 255 transitions. [2020-12-21 23:17:26,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-21 23:17:26,480 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:26,480 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] [2020-12-21 23:17:26,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-21 23:17:26,481 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:26,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:26,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1920836500, now seen corresponding path program 1 times [2020-12-21 23:17:26,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:26,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950192138] [2020-12-21 23:17:26,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:26,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:26,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:26,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950192138] [2020-12-21 23:17:26,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:26,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:26,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201023652] [2020-12-21 23:17:26,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:26,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:26,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:26,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:26,549 INFO L87 Difference]: Start difference. First operand 143 states and 255 transitions. Second operand 3 states. [2020-12-21 23:17:26,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:26,588 INFO L93 Difference]: Finished difference Result 216 states and 382 transitions. [2020-12-21 23:17:26,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:26,590 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-21 23:17:26,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:26,592 INFO L225 Difference]: With dead ends: 216 [2020-12-21 23:17:26,592 INFO L226 Difference]: Without dead ends: 147 [2020-12-21 23:17:26,593 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 [2020-12-21 23:17:26,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-12-21 23:17:26,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 145. [2020-12-21 23:17:26,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-12-21 23:17:26,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 255 transitions. [2020-12-21 23:17:26,616 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 255 transitions. Word has length 20 [2020-12-21 23:17:26,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:26,616 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 255 transitions. [2020-12-21 23:17:26,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:26,617 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 255 transitions. [2020-12-21 23:17:26,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-21 23:17:26,620 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:26,620 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] [2020-12-21 23:17:26,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-21 23:17:26,622 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:26,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:26,623 INFO L82 PathProgramCache]: Analyzing trace with hash 640972822, now seen corresponding path program 1 times [2020-12-21 23:17:26,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:26,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159095264] [2020-12-21 23:17:26,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:26,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:26,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159095264] [2020-12-21 23:17:26,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:26,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:26,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568753621] [2020-12-21 23:17:26,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:26,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:26,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:26,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:26,672 INFO L87 Difference]: Start difference. First operand 145 states and 255 transitions. Second operand 3 states. [2020-12-21 23:17:26,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:26,692 INFO L93 Difference]: Finished difference Result 417 states and 737 transitions. [2020-12-21 23:17:26,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:26,694 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-21 23:17:26,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:26,696 INFO L225 Difference]: With dead ends: 417 [2020-12-21 23:17:26,698 INFO L226 Difference]: Without dead ends: 279 [2020-12-21 23:17:26,700 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 [2020-12-21 23:17:26,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-12-21 23:17:26,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 277. [2020-12-21 23:17:26,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-12-21 23:17:26,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 483 transitions. [2020-12-21 23:17:26,741 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 483 transitions. Word has length 20 [2020-12-21 23:17:26,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:26,741 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 483 transitions. [2020-12-21 23:17:26,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:26,742 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 483 transitions. [2020-12-21 23:17:26,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-21 23:17:26,747 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:26,747 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] [2020-12-21 23:17:26,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-21 23:17:26,747 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:26,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:26,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1652090072, now seen corresponding path program 1 times [2020-12-21 23:17:26,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:26,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955510269] [2020-12-21 23:17:26,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:26,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:26,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:26,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955510269] [2020-12-21 23:17:26,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:26,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:26,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821666956] [2020-12-21 23:17:26,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:26,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:26,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:26,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:26,814 INFO L87 Difference]: Start difference. First operand 277 states and 483 transitions. Second operand 3 states. [2020-12-21 23:17:26,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:26,832 INFO L93 Difference]: Finished difference Result 353 states and 621 transitions. [2020-12-21 23:17:26,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:26,833 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-21 23:17:26,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:26,835 INFO L225 Difference]: With dead ends: 353 [2020-12-21 23:17:26,835 INFO L226 Difference]: Without dead ends: 351 [2020-12-21 23:17:26,836 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 [2020-12-21 23:17:26,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-12-21 23:17:26,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 277. [2020-12-21 23:17:26,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-12-21 23:17:26,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 479 transitions. [2020-12-21 23:17:26,850 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 479 transitions. Word has length 20 [2020-12-21 23:17:26,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:26,850 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 479 transitions. [2020-12-21 23:17:26,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:26,851 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 479 transitions. [2020-12-21 23:17:26,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-21 23:17:26,852 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:26,853 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] [2020-12-21 23:17:26,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-21 23:17:26,853 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:26,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:26,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1604465292, now seen corresponding path program 1 times [2020-12-21 23:17:26,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:26,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106067839] [2020-12-21 23:17:26,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:26,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:26,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106067839] [2020-12-21 23:17:26,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:26,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:26,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576019429] [2020-12-21 23:17:26,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:26,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:26,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:26,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:26,933 INFO L87 Difference]: Start difference. First operand 277 states and 479 transitions. Second operand 3 states. [2020-12-21 23:17:26,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:26,972 INFO L93 Difference]: Finished difference Result 517 states and 905 transitions. [2020-12-21 23:17:26,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:26,973 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-21 23:17:26,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:26,976 INFO L225 Difference]: With dead ends: 517 [2020-12-21 23:17:26,976 INFO L226 Difference]: Without dead ends: 515 [2020-12-21 23:17:26,978 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 [2020-12-21 23:17:26,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2020-12-21 23:17:27,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 385. [2020-12-21 23:17:27,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-12-21 23:17:27,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 655 transitions. [2020-12-21 23:17:27,004 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 655 transitions. Word has length 21 [2020-12-21 23:17:27,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:27,005 INFO L481 AbstractCegarLoop]: Abstraction has 385 states and 655 transitions. [2020-12-21 23:17:27,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:27,006 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 655 transitions. [2020-12-21 23:17:27,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-21 23:17:27,008 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:27,008 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] [2020-12-21 23:17:27,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-21 23:17:27,009 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:27,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:27,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1679384754, now seen corresponding path program 1 times [2020-12-21 23:17:27,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:27,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612773108] [2020-12-21 23:17:27,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:27,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:27,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612773108] [2020-12-21 23:17:27,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:27,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:27,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147147653] [2020-12-21 23:17:27,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:27,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:27,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:27,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:27,064 INFO L87 Difference]: Start difference. First operand 385 states and 655 transitions. Second operand 3 states. [2020-12-21 23:17:27,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:27,088 INFO L93 Difference]: Finished difference Result 917 states and 1569 transitions. [2020-12-21 23:17:27,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:27,089 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-21 23:17:27,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:27,092 INFO L225 Difference]: With dead ends: 917 [2020-12-21 23:17:27,092 INFO L226 Difference]: Without dead ends: 539 [2020-12-21 23:17:27,094 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 [2020-12-21 23:17:27,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2020-12-21 23:17:27,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 537. [2020-12-21 23:17:27,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 537 states. [2020-12-21 23:17:27,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 907 transitions. [2020-12-21 23:17:27,114 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 907 transitions. Word has length 21 [2020-12-21 23:17:27,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:27,114 INFO L481 AbstractCegarLoop]: Abstraction has 537 states and 907 transitions. [2020-12-21 23:17:27,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:27,114 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 907 transitions. [2020-12-21 23:17:27,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-21 23:17:27,116 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:27,116 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] [2020-12-21 23:17:27,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-21 23:17:27,116 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:27,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:27,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1801397547, now seen corresponding path program 1 times [2020-12-21 23:17:27,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:27,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219569403] [2020-12-21 23:17:27,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:27,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:27,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:27,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219569403] [2020-12-21 23:17:27,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:27,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:27,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153313701] [2020-12-21 23:17:27,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:27,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:27,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:27,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:27,145 INFO L87 Difference]: Start difference. First operand 537 states and 907 transitions. Second operand 3 states. [2020-12-21 23:17:27,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:27,166 INFO L93 Difference]: Finished difference Result 813 states and 1369 transitions. [2020-12-21 23:17:27,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:27,166 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-21 23:17:27,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:27,170 INFO L225 Difference]: With dead ends: 813 [2020-12-21 23:17:27,170 INFO L226 Difference]: Without dead ends: 551 [2020-12-21 23:17:27,171 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 [2020-12-21 23:17:27,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2020-12-21 23:17:27,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 549. [2020-12-21 23:17:27,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-12-21 23:17:27,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 915 transitions. [2020-12-21 23:17:27,189 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 915 transitions. Word has length 22 [2020-12-21 23:17:27,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:27,190 INFO L481 AbstractCegarLoop]: Abstraction has 549 states and 915 transitions. [2020-12-21 23:17:27,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:27,190 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 915 transitions. [2020-12-21 23:17:27,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-21 23:17:27,191 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:27,191 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] [2020-12-21 23:17:27,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-21 23:17:27,192 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:27,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:27,193 INFO L82 PathProgramCache]: Analyzing trace with hash 521533869, now seen corresponding path program 1 times [2020-12-21 23:17:27,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:27,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415529816] [2020-12-21 23:17:27,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:27,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:27,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:27,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415529816] [2020-12-21 23:17:27,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:27,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:27,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417654722] [2020-12-21 23:17:27,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:27,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:27,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:27,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:27,219 INFO L87 Difference]: Start difference. First operand 549 states and 915 transitions. Second operand 3 states. [2020-12-21 23:17:27,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:27,240 INFO L93 Difference]: Finished difference Result 1001 states and 1693 transitions. [2020-12-21 23:17:27,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:27,241 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-21 23:17:27,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:27,246 INFO L225 Difference]: With dead ends: 1001 [2020-12-21 23:17:27,247 INFO L226 Difference]: Without dead ends: 999 [2020-12-21 23:17:27,248 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 [2020-12-21 23:17:27,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2020-12-21 23:17:27,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 773. [2020-12-21 23:17:27,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 773 states. [2020-12-21 23:17:27,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1259 transitions. [2020-12-21 23:17:27,273 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1259 transitions. Word has length 22 [2020-12-21 23:17:27,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:27,273 INFO L481 AbstractCegarLoop]: Abstraction has 773 states and 1259 transitions. [2020-12-21 23:17:27,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:27,274 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1259 transitions. [2020-12-21 23:17:27,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-21 23:17:27,275 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:27,275 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] [2020-12-21 23:17:27,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-21 23:17:27,276 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:27,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:27,276 INFO L82 PathProgramCache]: Analyzing trace with hash -489583381, now seen corresponding path program 1 times [2020-12-21 23:17:27,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:27,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575706586] [2020-12-21 23:17:27,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:27,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:27,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575706586] [2020-12-21 23:17:27,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:27,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:27,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317444303] [2020-12-21 23:17:27,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:27,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:27,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:27,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:27,302 INFO L87 Difference]: Start difference. First operand 773 states and 1259 transitions. Second operand 3 states. [2020-12-21 23:17:27,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:27,329 INFO L93 Difference]: Finished difference Result 1817 states and 2973 transitions. [2020-12-21 23:17:27,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:27,329 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-21 23:17:27,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:27,335 INFO L225 Difference]: With dead ends: 1817 [2020-12-21 23:17:27,336 INFO L226 Difference]: Without dead ends: 1063 [2020-12-21 23:17:27,338 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 [2020-12-21 23:17:27,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2020-12-21 23:17:27,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 1061. [2020-12-21 23:17:27,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1061 states. [2020-12-21 23:17:27,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1715 transitions. [2020-12-21 23:17:27,370 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1715 transitions. Word has length 22 [2020-12-21 23:17:27,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:27,370 INFO L481 AbstractCegarLoop]: Abstraction has 1061 states and 1715 transitions. [2020-12-21 23:17:27,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:27,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1715 transitions. [2020-12-21 23:17:27,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-21 23:17:27,372 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:27,373 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] [2020-12-21 23:17:27,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-21 23:17:27,373 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:27,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:27,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1012104857, now seen corresponding path program 1 times [2020-12-21 23:17:27,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:27,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630964226] [2020-12-21 23:17:27,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:27,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:27,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:27,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630964226] [2020-12-21 23:17:27,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:27,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:27,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933654628] [2020-12-21 23:17:27,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:27,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:27,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:27,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:27,398 INFO L87 Difference]: Start difference. First operand 1061 states and 1715 transitions. Second operand 3 states. [2020-12-21 23:17:27,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:27,425 INFO L93 Difference]: Finished difference Result 1593 states and 2565 transitions. [2020-12-21 23:17:27,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:27,425 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-21 23:17:27,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:27,431 INFO L225 Difference]: With dead ends: 1593 [2020-12-21 23:17:27,431 INFO L226 Difference]: Without dead ends: 1079 [2020-12-21 23:17:27,433 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 [2020-12-21 23:17:27,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2020-12-21 23:17:27,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1077. [2020-12-21 23:17:27,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1077 states. [2020-12-21 23:17:27,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1715 transitions. [2020-12-21 23:17:27,467 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1715 transitions. Word has length 23 [2020-12-21 23:17:27,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:27,468 INFO L481 AbstractCegarLoop]: Abstraction has 1077 states and 1715 transitions. [2020-12-21 23:17:27,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:27,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1715 transitions. [2020-12-21 23:17:27,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-21 23:17:27,470 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:27,470 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] [2020-12-21 23:17:27,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-21 23:17:27,470 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:27,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:27,471 INFO L82 PathProgramCache]: Analyzing trace with hash 2002998761, now seen corresponding path program 1 times [2020-12-21 23:17:27,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:27,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500025073] [2020-12-21 23:17:27,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:27,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:27,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500025073] [2020-12-21 23:17:27,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:27,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:27,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71173660] [2020-12-21 23:17:27,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:27,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:27,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:27,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:27,495 INFO L87 Difference]: Start difference. First operand 1077 states and 1715 transitions. Second operand 3 states. [2020-12-21 23:17:27,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:27,548 INFO L93 Difference]: Finished difference Result 1929 states and 3125 transitions. [2020-12-21 23:17:27,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:27,549 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-21 23:17:27,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:27,559 INFO L225 Difference]: With dead ends: 1929 [2020-12-21 23:17:27,559 INFO L226 Difference]: Without dead ends: 1927 [2020-12-21 23:17:27,562 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 [2020-12-21 23:17:27,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1927 states. [2020-12-21 23:17:27,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1927 to 1541. [2020-12-21 23:17:27,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1541 states. [2020-12-21 23:17:27,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 2387 transitions. [2020-12-21 23:17:27,615 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 2387 transitions. Word has length 23 [2020-12-21 23:17:27,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:27,616 INFO L481 AbstractCegarLoop]: Abstraction has 1541 states and 2387 transitions. [2020-12-21 23:17:27,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:27,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 2387 transitions. [2020-12-21 23:17:27,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-21 23:17:27,620 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:27,620 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] [2020-12-21 23:17:27,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-21 23:17:27,620 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:27,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:27,621 INFO L82 PathProgramCache]: Analyzing trace with hash 991881511, now seen corresponding path program 1 times [2020-12-21 23:17:27,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:27,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056249681] [2020-12-21 23:17:27,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:27,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:27,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:27,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056249681] [2020-12-21 23:17:27,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:27,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:27,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602644283] [2020-12-21 23:17:27,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:27,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:27,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:27,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:27,658 INFO L87 Difference]: Start difference. First operand 1541 states and 2387 transitions. Second operand 3 states. [2020-12-21 23:17:27,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:27,699 INFO L93 Difference]: Finished difference Result 3593 states and 5589 transitions. [2020-12-21 23:17:27,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:27,699 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-21 23:17:27,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:27,709 INFO L225 Difference]: With dead ends: 3593 [2020-12-21 23:17:27,709 INFO L226 Difference]: Without dead ends: 2087 [2020-12-21 23:17:27,711 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 [2020-12-21 23:17:27,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2087 states. [2020-12-21 23:17:27,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2087 to 2085. [2020-12-21 23:17:27,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-12-21 23:17:27,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 3203 transitions. [2020-12-21 23:17:27,766 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 3203 transitions. Word has length 23 [2020-12-21 23:17:27,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:27,767 INFO L481 AbstractCegarLoop]: Abstraction has 2085 states and 3203 transitions. [2020-12-21 23:17:27,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:27,767 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 3203 transitions. [2020-12-21 23:17:27,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-21 23:17:27,769 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:27,769 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] [2020-12-21 23:17:27,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-21 23:17:27,770 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:27,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:27,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1963634176, now seen corresponding path program 1 times [2020-12-21 23:17:27,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:27,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176858473] [2020-12-21 23:17:27,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:27,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:27,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:27,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176858473] [2020-12-21 23:17:27,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:27,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:27,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842016723] [2020-12-21 23:17:27,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:27,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:27,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:27,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:27,795 INFO L87 Difference]: Start difference. First operand 2085 states and 3203 transitions. Second operand 3 states. [2020-12-21 23:17:27,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:27,833 INFO L93 Difference]: Finished difference Result 3129 states and 4789 transitions. [2020-12-21 23:17:27,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:27,834 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-21 23:17:27,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:27,844 INFO L225 Difference]: With dead ends: 3129 [2020-12-21 23:17:27,844 INFO L226 Difference]: Without dead ends: 2119 [2020-12-21 23:17:27,854 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 [2020-12-21 23:17:27,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2119 states. [2020-12-21 23:17:27,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2119 to 2117. [2020-12-21 23:17:27,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2117 states. [2020-12-21 23:17:27,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 3203 transitions. [2020-12-21 23:17:27,914 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 3203 transitions. Word has length 24 [2020-12-21 23:17:27,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:27,915 INFO L481 AbstractCegarLoop]: Abstraction has 2117 states and 3203 transitions. [2020-12-21 23:17:27,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:27,915 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 3203 transitions. [2020-12-21 23:17:27,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-21 23:17:27,918 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:27,918 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] [2020-12-21 23:17:27,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-21 23:17:27,918 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:27,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:27,919 INFO L82 PathProgramCache]: Analyzing trace with hash 683770498, now seen corresponding path program 1 times [2020-12-21 23:17:27,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:27,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702964227] [2020-12-21 23:17:27,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:27,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:27,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:27,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702964227] [2020-12-21 23:17:27,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:27,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:27,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676358392] [2020-12-21 23:17:27,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:27,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:27,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:27,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:27,942 INFO L87 Difference]: Start difference. First operand 2117 states and 3203 transitions. Second operand 3 states. [2020-12-21 23:17:28,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:28,019 INFO L93 Difference]: Finished difference Result 3721 states and 5733 transitions. [2020-12-21 23:17:28,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:28,019 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-21 23:17:28,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:28,037 INFO L225 Difference]: With dead ends: 3721 [2020-12-21 23:17:28,037 INFO L226 Difference]: Without dead ends: 3719 [2020-12-21 23:17:28,040 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 [2020-12-21 23:17:28,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3719 states. [2020-12-21 23:17:28,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3719 to 3077. [2020-12-21 23:17:28,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3077 states. [2020-12-21 23:17:28,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3077 states to 3077 states and 4515 transitions. [2020-12-21 23:17:28,140 INFO L78 Accepts]: Start accepts. Automaton has 3077 states and 4515 transitions. Word has length 24 [2020-12-21 23:17:28,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:28,141 INFO L481 AbstractCegarLoop]: Abstraction has 3077 states and 4515 transitions. [2020-12-21 23:17:28,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:28,141 INFO L276 IsEmpty]: Start isEmpty. Operand 3077 states and 4515 transitions. [2020-12-21 23:17:28,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-21 23:17:28,146 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:28,146 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] [2020-12-21 23:17:28,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-21 23:17:28,147 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:28,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:28,147 INFO L82 PathProgramCache]: Analyzing trace with hash -327346752, now seen corresponding path program 1 times [2020-12-21 23:17:28,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:28,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817797097] [2020-12-21 23:17:28,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:28,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:28,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:28,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817797097] [2020-12-21 23:17:28,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:28,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:28,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896334212] [2020-12-21 23:17:28,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:28,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:28,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:28,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:28,186 INFO L87 Difference]: Start difference. First operand 3077 states and 4515 transitions. Second operand 3 states. [2020-12-21 23:17:28,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:28,292 INFO L93 Difference]: Finished difference Result 7113 states and 10469 transitions. [2020-12-21 23:17:28,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:28,292 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-21 23:17:28,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:28,312 INFO L225 Difference]: With dead ends: 7113 [2020-12-21 23:17:28,313 INFO L226 Difference]: Without dead ends: 4103 [2020-12-21 23:17:28,318 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 [2020-12-21 23:17:28,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4103 states. [2020-12-21 23:17:28,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4103 to 4101. [2020-12-21 23:17:28,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4101 states. [2020-12-21 23:17:28,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4101 states to 4101 states and 5955 transitions. [2020-12-21 23:17:28,463 INFO L78 Accepts]: Start accepts. Automaton has 4101 states and 5955 transitions. Word has length 24 [2020-12-21 23:17:28,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:28,463 INFO L481 AbstractCegarLoop]: Abstraction has 4101 states and 5955 transitions. [2020-12-21 23:17:28,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:28,463 INFO L276 IsEmpty]: Start isEmpty. Operand 4101 states and 5955 transitions. [2020-12-21 23:17:28,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-21 23:17:28,468 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:28,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:28,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-21 23:17:28,469 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:28,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:28,469 INFO L82 PathProgramCache]: Analyzing trace with hash -277735972, now seen corresponding path program 1 times [2020-12-21 23:17:28,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:28,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066122849] [2020-12-21 23:17:28,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:28,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:28,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:28,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066122849] [2020-12-21 23:17:28,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:28,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:28,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749925713] [2020-12-21 23:17:28,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:28,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:28,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:28,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:28,544 INFO L87 Difference]: Start difference. First operand 4101 states and 5955 transitions. Second operand 3 states. [2020-12-21 23:17:28,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:28,623 INFO L93 Difference]: Finished difference Result 6153 states and 8901 transitions. [2020-12-21 23:17:28,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:28,624 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-21 23:17:28,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:28,651 INFO L225 Difference]: With dead ends: 6153 [2020-12-21 23:17:28,652 INFO L226 Difference]: Without dead ends: 4167 [2020-12-21 23:17:28,656 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 [2020-12-21 23:17:28,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4167 states. [2020-12-21 23:17:28,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4167 to 4165. [2020-12-21 23:17:28,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4165 states. [2020-12-21 23:17:28,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4165 states to 4165 states and 5955 transitions. [2020-12-21 23:17:28,809 INFO L78 Accepts]: Start accepts. Automaton has 4165 states and 5955 transitions. Word has length 25 [2020-12-21 23:17:28,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:28,809 INFO L481 AbstractCegarLoop]: Abstraction has 4165 states and 5955 transitions. [2020-12-21 23:17:28,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:28,810 INFO L276 IsEmpty]: Start isEmpty. Operand 4165 states and 5955 transitions. [2020-12-21 23:17:28,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-21 23:17:28,819 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:28,819 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:28,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-21 23:17:28,821 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:28,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:28,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1557599650, now seen corresponding path program 1 times [2020-12-21 23:17:28,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:28,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629695099] [2020-12-21 23:17:28,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:28,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:28,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:28,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629695099] [2020-12-21 23:17:28,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:28,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:28,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159039930] [2020-12-21 23:17:28,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:28,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:28,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:28,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:28,863 INFO L87 Difference]: Start difference. First operand 4165 states and 5955 transitions. Second operand 3 states. [2020-12-21 23:17:28,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:28,990 INFO L93 Difference]: Finished difference Result 7177 states and 10437 transitions. [2020-12-21 23:17:28,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:28,991 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-21 23:17:28,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:29,029 INFO L225 Difference]: With dead ends: 7177 [2020-12-21 23:17:29,029 INFO L226 Difference]: Without dead ends: 7175 [2020-12-21 23:17:29,032 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 [2020-12-21 23:17:29,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7175 states. [2020-12-21 23:17:29,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7175 to 6149. [2020-12-21 23:17:29,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6149 states. [2020-12-21 23:17:29,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6149 states to 6149 states and 8515 transitions. [2020-12-21 23:17:29,275 INFO L78 Accepts]: Start accepts. Automaton has 6149 states and 8515 transitions. Word has length 25 [2020-12-21 23:17:29,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:29,276 INFO L481 AbstractCegarLoop]: Abstraction has 6149 states and 8515 transitions. [2020-12-21 23:17:29,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:29,276 INFO L276 IsEmpty]: Start isEmpty. Operand 6149 states and 8515 transitions. [2020-12-21 23:17:29,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-21 23:17:29,285 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:29,285 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:29,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-21 23:17:29,286 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:29,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:29,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1726250396, now seen corresponding path program 1 times [2020-12-21 23:17:29,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:29,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148124157] [2020-12-21 23:17:29,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:29,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:29,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148124157] [2020-12-21 23:17:29,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:29,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:29,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775899398] [2020-12-21 23:17:29,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:29,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:29,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:29,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:29,319 INFO L87 Difference]: Start difference. First operand 6149 states and 8515 transitions. Second operand 3 states. [2020-12-21 23:17:29,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:29,460 INFO L93 Difference]: Finished difference Result 14089 states and 19525 transitions. [2020-12-21 23:17:29,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:29,461 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-21 23:17:29,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:29,484 INFO L225 Difference]: With dead ends: 14089 [2020-12-21 23:17:29,484 INFO L226 Difference]: Without dead ends: 8071 [2020-12-21 23:17:29,499 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 [2020-12-21 23:17:29,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8071 states. [2020-12-21 23:17:29,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8071 to 8069. [2020-12-21 23:17:29,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8069 states. [2020-12-21 23:17:29,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8069 states to 8069 states and 11011 transitions. [2020-12-21 23:17:29,789 INFO L78 Accepts]: Start accepts. Automaton has 8069 states and 11011 transitions. Word has length 25 [2020-12-21 23:17:29,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:29,790 INFO L481 AbstractCegarLoop]: Abstraction has 8069 states and 11011 transitions. [2020-12-21 23:17:29,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:29,790 INFO L276 IsEmpty]: Start isEmpty. Operand 8069 states and 11011 transitions. [2020-12-21 23:17:29,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-21 23:17:29,801 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:29,802 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] [2020-12-21 23:17:29,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-21 23:17:29,802 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:29,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:29,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1040733483, now seen corresponding path program 1 times [2020-12-21 23:17:29,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:29,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574141489] [2020-12-21 23:17:29,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:29,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:29,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:29,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574141489] [2020-12-21 23:17:29,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:29,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:29,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740883836] [2020-12-21 23:17:29,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:29,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:29,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:29,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:29,826 INFO L87 Difference]: Start difference. First operand 8069 states and 11011 transitions. Second operand 3 states. [2020-12-21 23:17:29,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:29,952 INFO L93 Difference]: Finished difference Result 12105 states and 16453 transitions. [2020-12-21 23:17:29,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:29,953 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-21 23:17:29,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:29,973 INFO L225 Difference]: With dead ends: 12105 [2020-12-21 23:17:29,974 INFO L226 Difference]: Without dead ends: 8199 [2020-12-21 23:17:29,981 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 [2020-12-21 23:17:29,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8199 states. [2020-12-21 23:17:30,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8199 to 8197. [2020-12-21 23:17:30,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8197 states. [2020-12-21 23:17:30,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8197 states to 8197 states and 11011 transitions. [2020-12-21 23:17:30,352 INFO L78 Accepts]: Start accepts. Automaton has 8197 states and 11011 transitions. Word has length 26 [2020-12-21 23:17:30,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:30,352 INFO L481 AbstractCegarLoop]: Abstraction has 8197 states and 11011 transitions. [2020-12-21 23:17:30,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:30,353 INFO L276 IsEmpty]: Start isEmpty. Operand 8197 states and 11011 transitions. [2020-12-21 23:17:30,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-21 23:17:30,362 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:30,363 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] [2020-12-21 23:17:30,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-21 23:17:30,363 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:30,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:30,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1974370135, now seen corresponding path program 1 times [2020-12-21 23:17:30,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:30,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944447751] [2020-12-21 23:17:30,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:30,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:30,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:30,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944447751] [2020-12-21 23:17:30,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:30,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:30,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335361353] [2020-12-21 23:17:30,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:30,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:30,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:30,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:30,390 INFO L87 Difference]: Start difference. First operand 8197 states and 11011 transitions. Second operand 3 states. [2020-12-21 23:17:30,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:30,628 INFO L93 Difference]: Finished difference Result 13833 states and 18821 transitions. [2020-12-21 23:17:30,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:30,629 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-21 23:17:30,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:30,661 INFO L225 Difference]: With dead ends: 13833 [2020-12-21 23:17:30,662 INFO L226 Difference]: Without dead ends: 13831 [2020-12-21 23:17:30,665 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 [2020-12-21 23:17:30,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13831 states. [2020-12-21 23:17:31,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13831 to 12293. [2020-12-21 23:17:31,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12293 states. [2020-12-21 23:17:31,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12293 states to 12293 states and 16003 transitions. [2020-12-21 23:17:31,046 INFO L78 Accepts]: Start accepts. Automaton has 12293 states and 16003 transitions. Word has length 26 [2020-12-21 23:17:31,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:31,046 INFO L481 AbstractCegarLoop]: Abstraction has 12293 states and 16003 transitions. [2020-12-21 23:17:31,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:31,046 INFO L276 IsEmpty]: Start isEmpty. Operand 12293 states and 16003 transitions. [2020-12-21 23:17:31,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-21 23:17:31,065 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:31,066 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] [2020-12-21 23:17:31,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-21 23:17:31,066 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:31,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:31,067 INFO L82 PathProgramCache]: Analyzing trace with hash 963252885, now seen corresponding path program 1 times [2020-12-21 23:17:31,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:31,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726503894] [2020-12-21 23:17:31,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:31,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:31,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726503894] [2020-12-21 23:17:31,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:31,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:31,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594880834] [2020-12-21 23:17:31,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:31,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:31,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:31,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:31,088 INFO L87 Difference]: Start difference. First operand 12293 states and 16003 transitions. Second operand 3 states. [2020-12-21 23:17:31,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:31,348 INFO L93 Difference]: Finished difference Result 27913 states and 36229 transitions. [2020-12-21 23:17:31,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:31,348 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-21 23:17:31,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:31,381 INFO L225 Difference]: With dead ends: 27913 [2020-12-21 23:17:31,382 INFO L226 Difference]: Without dead ends: 15879 [2020-12-21 23:17:31,400 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 [2020-12-21 23:17:31,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15879 states. [2020-12-21 23:17:32,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15879 to 15877. [2020-12-21 23:17:32,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15877 states. [2020-12-21 23:17:32,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15877 states to 15877 states and 20227 transitions. [2020-12-21 23:17:32,079 INFO L78 Accepts]: Start accepts. Automaton has 15877 states and 20227 transitions. Word has length 26 [2020-12-21 23:17:32,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:32,080 INFO L481 AbstractCegarLoop]: Abstraction has 15877 states and 20227 transitions. [2020-12-21 23:17:32,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:32,080 INFO L276 IsEmpty]: Start isEmpty. Operand 15877 states and 20227 transitions. [2020-12-21 23:17:32,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-21 23:17:32,097 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:32,098 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] [2020-12-21 23:17:32,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-21 23:17:32,098 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:32,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:32,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1076147793, now seen corresponding path program 1 times [2020-12-21 23:17:32,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:32,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717677902] [2020-12-21 23:17:32,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:32,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:32,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:32,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717677902] [2020-12-21 23:17:32,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:32,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:32,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883567738] [2020-12-21 23:17:32,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:32,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:32,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:32,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:32,141 INFO L87 Difference]: Start difference. First operand 15877 states and 20227 transitions. Second operand 3 states. [2020-12-21 23:17:32,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:32,364 INFO L93 Difference]: Finished difference Result 23817 states and 30213 transitions. [2020-12-21 23:17:32,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:32,365 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-21 23:17:32,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:32,398 INFO L225 Difference]: With dead ends: 23817 [2020-12-21 23:17:32,398 INFO L226 Difference]: Without dead ends: 16135 [2020-12-21 23:17:32,412 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 [2020-12-21 23:17:32,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16135 states. [2020-12-21 23:17:32,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16135 to 16133. [2020-12-21 23:17:32,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16133 states. [2020-12-21 23:17:33,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16133 states to 16133 states and 20227 transitions. [2020-12-21 23:17:33,043 INFO L78 Accepts]: Start accepts. Automaton has 16133 states and 20227 transitions. Word has length 27 [2020-12-21 23:17:33,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:33,043 INFO L481 AbstractCegarLoop]: Abstraction has 16133 states and 20227 transitions. [2020-12-21 23:17:33,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:33,043 INFO L276 IsEmpty]: Start isEmpty. Operand 16133 states and 20227 transitions. [2020-12-21 23:17:33,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-21 23:17:33,063 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:33,063 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] [2020-12-21 23:17:33,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-21 23:17:33,063 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:33,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:33,064 INFO L82 PathProgramCache]: Analyzing trace with hash -203715885, now seen corresponding path program 1 times [2020-12-21 23:17:33,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:33,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411185657] [2020-12-21 23:17:33,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:33,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:33,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411185657] [2020-12-21 23:17:33,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:33,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:33,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492995063] [2020-12-21 23:17:33,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:33,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:33,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:33,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:33,089 INFO L87 Difference]: Start difference. First operand 16133 states and 20227 transitions. Second operand 3 states. [2020-12-21 23:17:33,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:33,462 INFO L93 Difference]: Finished difference Result 26633 states and 33541 transitions. [2020-12-21 23:17:33,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:33,463 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-21 23:17:33,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:33,520 INFO L225 Difference]: With dead ends: 26633 [2020-12-21 23:17:33,520 INFO L226 Difference]: Without dead ends: 26631 [2020-12-21 23:17:33,529 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 [2020-12-21 23:17:33,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26631 states. [2020-12-21 23:17:34,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26631 to 24581. [2020-12-21 23:17:34,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24581 states. [2020-12-21 23:17:34,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24581 states to 24581 states and 29955 transitions. [2020-12-21 23:17:34,271 INFO L78 Accepts]: Start accepts. Automaton has 24581 states and 29955 transitions. Word has length 27 [2020-12-21 23:17:34,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:34,271 INFO L481 AbstractCegarLoop]: Abstraction has 24581 states and 29955 transitions. [2020-12-21 23:17:34,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:34,272 INFO L276 IsEmpty]: Start isEmpty. Operand 24581 states and 29955 transitions. [2020-12-21 23:17:34,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-21 23:17:34,311 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:34,311 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] [2020-12-21 23:17:34,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-21 23:17:34,312 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:34,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:34,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1214833135, now seen corresponding path program 1 times [2020-12-21 23:17:34,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:34,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772068854] [2020-12-21 23:17:34,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:34,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:34,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:34,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772068854] [2020-12-21 23:17:34,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:34,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:34,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100136144] [2020-12-21 23:17:34,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:34,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:34,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:34,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:34,335 INFO L87 Difference]: Start difference. First operand 24581 states and 29955 transitions. Second operand 3 states. [2020-12-21 23:17:34,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:34,951 INFO L93 Difference]: Finished difference Result 55305 states and 66821 transitions. [2020-12-21 23:17:34,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:34,951 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-21 23:17:34,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:35,000 INFO L225 Difference]: With dead ends: 55305 [2020-12-21 23:17:35,000 INFO L226 Difference]: Without dead ends: 31239 [2020-12-21 23:17:35,032 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 [2020-12-21 23:17:35,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31239 states. [2020-12-21 23:17:36,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31239 to 31237. [2020-12-21 23:17:36,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31237 states. [2020-12-21 23:17:36,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31237 states to 31237 states and 36867 transitions. [2020-12-21 23:17:36,067 INFO L78 Accepts]: Start accepts. Automaton has 31237 states and 36867 transitions. Word has length 27 [2020-12-21 23:17:36,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:36,067 INFO L481 AbstractCegarLoop]: Abstraction has 31237 states and 36867 transitions. [2020-12-21 23:17:36,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:36,067 INFO L276 IsEmpty]: Start isEmpty. Operand 31237 states and 36867 transitions. [2020-12-21 23:17:36,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-21 23:17:36,090 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:36,091 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] [2020-12-21 23:17:36,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-21 23:17:36,091 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:36,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:36,092 INFO L82 PathProgramCache]: Analyzing trace with hash -2020009046, now seen corresponding path program 1 times [2020-12-21 23:17:36,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:36,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758427988] [2020-12-21 23:17:36,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:36,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:36,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:36,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758427988] [2020-12-21 23:17:36,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:36,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:36,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143399373] [2020-12-21 23:17:36,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:36,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:36,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:36,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:36,114 INFO L87 Difference]: Start difference. First operand 31237 states and 36867 transitions. Second operand 3 states. [2020-12-21 23:17:36,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:36,620 INFO L93 Difference]: Finished difference Result 46857 states and 55045 transitions. [2020-12-21 23:17:36,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:36,620 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-12-21 23:17:36,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:36,669 INFO L225 Difference]: With dead ends: 46857 [2020-12-21 23:17:36,669 INFO L226 Difference]: Without dead ends: 31751 [2020-12-21 23:17:36,687 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 [2020-12-21 23:17:36,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31751 states. [2020-12-21 23:17:37,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31751 to 31749. [2020-12-21 23:17:37,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31749 states. [2020-12-21 23:17:37,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31749 states to 31749 states and 36867 transitions. [2020-12-21 23:17:37,382 INFO L78 Accepts]: Start accepts. Automaton has 31749 states and 36867 transitions. Word has length 28 [2020-12-21 23:17:37,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:37,382 INFO L481 AbstractCegarLoop]: Abstraction has 31749 states and 36867 transitions. [2020-12-21 23:17:37,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:37,383 INFO L276 IsEmpty]: Start isEmpty. Operand 31749 states and 36867 transitions. [2020-12-21 23:17:37,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-21 23:17:37,407 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:37,407 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] [2020-12-21 23:17:37,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-21 23:17:37,407 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:37,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:37,408 INFO L82 PathProgramCache]: Analyzing trace with hash 995094572, now seen corresponding path program 1 times [2020-12-21 23:17:37,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:37,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449318318] [2020-12-21 23:17:37,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:37,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:37,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:37,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449318318] [2020-12-21 23:17:37,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:37,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:37,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980565813] [2020-12-21 23:17:37,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:37,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:37,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:37,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:37,605 INFO L87 Difference]: Start difference. First operand 31749 states and 36867 transitions. Second operand 3 states. [2020-12-21 23:17:38,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:38,438 INFO L93 Difference]: Finished difference Result 92167 states and 104452 transitions. [2020-12-21 23:17:38,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:38,439 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-12-21 23:17:38,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:38,477 INFO L225 Difference]: With dead ends: 92167 [2020-12-21 23:17:38,478 INFO L226 Difference]: Without dead ends: 31749 [2020-12-21 23:17:38,506 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 [2020-12-21 23:17:38,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31749 states. [2020-12-21 23:17:39,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31749 to 31749. [2020-12-21 23:17:39,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31749 states. [2020-12-21 23:17:39,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31749 states to 31749 states and 34819 transitions. [2020-12-21 23:17:39,354 INFO L78 Accepts]: Start accepts. Automaton has 31749 states and 34819 transitions. Word has length 28 [2020-12-21 23:17:39,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:39,355 INFO L481 AbstractCegarLoop]: Abstraction has 31749 states and 34819 transitions. [2020-12-21 23:17:39,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:39,355 INFO L276 IsEmpty]: Start isEmpty. Operand 31749 states and 34819 transitions. [2020-12-21 23:17:39,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-21 23:17:39,380 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:39,381 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] [2020-12-21 23:17:39,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-21 23:17:39,381 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:39,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:39,382 INFO L82 PathProgramCache]: Analyzing trace with hash 2006211822, now seen corresponding path program 1 times [2020-12-21 23:17:39,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:39,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546260648] [2020-12-21 23:17:39,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:39,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:39,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:39,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546260648] [2020-12-21 23:17:39,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:39,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:39,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163019724] [2020-12-21 23:17:39,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:39,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:39,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:39,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:39,404 INFO L87 Difference]: Start difference. First operand 31749 states and 34819 transitions. Second operand 3 states. [2020-12-21 23:17:39,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:39,816 INFO L93 Difference]: Finished difference Result 31749 states and 34819 transitions. [2020-12-21 23:17:39,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:39,816 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-12-21 23:17:39,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:39,817 INFO L225 Difference]: With dead ends: 31749 [2020-12-21 23:17:39,817 INFO L226 Difference]: Without dead ends: 0 [2020-12-21 23:17:39,829 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 [2020-12-21 23:17:39,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-21 23:17:39,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-21 23:17:39,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-21 23:17:39,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-21 23:17:39,830 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2020-12-21 23:17:39,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:39,830 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-21 23:17:39,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:39,830 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-21 23:17:39,830 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-21 23:17:39,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-21 23:17:39,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-21 23:17:39,852 INFO L189 CegarLoopUtils]: For program point L159-1(lines 44 174) no Hoare annotation was computed. [2020-12-21 23:17:39,852 INFO L189 CegarLoopUtils]: For program point L93-1(lines 44 174) no Hoare annotation was computed. [2020-12-21 23:17:39,852 INFO L189 CegarLoopUtils]: For program point L85-1(lines 44 174) no Hoare annotation was computed. [2020-12-21 23:17:39,852 INFO L189 CegarLoopUtils]: For program point L77-1(lines 44 174) no Hoare annotation was computed. [2020-12-21 23:17:39,852 INFO L189 CegarLoopUtils]: For program point L135(line 135) no Hoare annotation was computed. [2020-12-21 23:17:39,852 INFO L189 CegarLoopUtils]: For program point L160(line 160) no Hoare annotation was computed. [2020-12-21 23:17:39,853 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-21 23:17:39,853 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-21 23:17:39,853 INFO L189 CegarLoopUtils]: For program point L119-1(lines 44 174) no Hoare annotation was computed. [2020-12-21 23:17:39,853 INFO L189 CegarLoopUtils]: For program point L144-1(lines 44 174) no Hoare annotation was computed. [2020-12-21 23:17:39,853 INFO L192 CegarLoopUtils]: At program point L169-1(lines 44 174) the Hoare annotation is: true [2020-12-21 23:17:39,853 INFO L189 CegarLoopUtils]: For program point L120(line 120) no Hoare annotation was computed. [2020-12-21 23:17:39,854 INFO L192 CegarLoopUtils]: At program point L178(lines 6 179) the Hoare annotation is: true [2020-12-21 23:17:39,854 INFO L189 CegarLoopUtils]: For program point L145(line 145) no Hoare annotation was computed. [2020-12-21 23:17:39,854 INFO L189 CegarLoopUtils]: For program point L46(lines 46 48) no Hoare annotation was computed. [2020-12-21 23:17:39,854 INFO L189 CegarLoopUtils]: For program point L170(line 170) no Hoare annotation was computed. [2020-12-21 23:17:39,854 INFO L185 CegarLoopUtils]: At program point L170-1(lines 7 179) the Hoare annotation is: false [2020-12-21 23:17:39,854 INFO L189 CegarLoopUtils]: For program point L129-1(lines 44 174) no Hoare annotation was computed. [2020-12-21 23:17:39,854 INFO L189 CegarLoopUtils]: For program point L154-1(lines 44 174) no Hoare annotation was computed. [2020-12-21 23:17:39,855 INFO L189 CegarLoopUtils]: For program point L113-1(lines 44 174) no Hoare annotation was computed. [2020-12-21 23:17:39,855 INFO L189 CegarLoopUtils]: For program point L105-1(lines 44 174) no Hoare annotation was computed. [2020-12-21 23:17:39,855 INFO L189 CegarLoopUtils]: For program point L130(line 130) no Hoare annotation was computed. [2020-12-21 23:17:39,855 INFO L189 CegarLoopUtils]: For program point L97-1(lines 44 174) no Hoare annotation was computed. [2020-12-21 23:17:39,855 INFO L189 CegarLoopUtils]: For program point L155(line 155) no Hoare annotation was computed. [2020-12-21 23:17:39,855 INFO L189 CegarLoopUtils]: For program point L89-1(lines 44 174) no Hoare annotation was computed. [2020-12-21 23:17:39,855 INFO L189 CegarLoopUtils]: For program point L81-1(lines 44 174) no Hoare annotation was computed. [2020-12-21 23:17:39,855 INFO L189 CegarLoopUtils]: For program point L139-1(lines 44 174) no Hoare annotation was computed. [2020-12-21 23:17:39,856 INFO L189 CegarLoopUtils]: For program point L73(lines 73 75) no Hoare annotation was computed. [2020-12-21 23:17:39,856 INFO L189 CegarLoopUtils]: For program point L73-2(lines 44 174) no Hoare annotation was computed. [2020-12-21 23:17:39,856 INFO L189 CegarLoopUtils]: For program point L164-1(lines 44 174) no Hoare annotation was computed. [2020-12-21 23:17:39,856 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-21 23:17:39,856 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 177) no Hoare annotation was computed. [2020-12-21 23:17:39,856 INFO L189 CegarLoopUtils]: For program point L140(line 140) no Hoare annotation was computed. [2020-12-21 23:17:39,856 INFO L189 CegarLoopUtils]: For program point L165(line 165) no Hoare annotation was computed. [2020-12-21 23:17:39,857 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-21 23:17:39,857 INFO L189 CegarLoopUtils]: For program point L124-1(lines 44 174) no Hoare annotation was computed. [2020-12-21 23:17:39,857 INFO L189 CegarLoopUtils]: For program point L149-1(lines 44 174) no Hoare annotation was computed. [2020-12-21 23:17:39,857 INFO L189 CegarLoopUtils]: For program point L125(line 125) no Hoare annotation was computed. [2020-12-21 23:17:39,857 INFO L189 CegarLoopUtils]: For program point L150(line 150) no Hoare annotation was computed. [2020-12-21 23:17:39,857 INFO L192 CegarLoopUtils]: At program point L175(lines 7 179) the Hoare annotation is: true [2020-12-21 23:17:39,857 INFO L189 CegarLoopUtils]: For program point L109-1(lines 44 174) no Hoare annotation was computed. [2020-12-21 23:17:39,857 INFO L189 CegarLoopUtils]: For program point L134-1(lines 44 174) no Hoare annotation was computed. [2020-12-21 23:17:39,858 INFO L189 CegarLoopUtils]: For program point L101-1(lines 44 174) no Hoare annotation was computed. [2020-12-21 23:17:39,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 11:17:39 BoogieIcfgContainer [2020-12-21 23:17:39,870 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-21 23:17:39,871 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-21 23:17:39,871 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-21 23:17:39,872 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-21 23:17:39,872 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:17:25" (3/4) ... [2020-12-21 23:17:39,876 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-21 23:17:39,890 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-21 23:17:39,891 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-21 23:17:39,891 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-21 23:17:39,892 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-21 23:17:39,950 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/locks/test_locks_11.c-witness.graphml [2020-12-21 23:17:39,951 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-21 23:17:39,953 INFO L168 Benchmark]: Toolchain (without parser) took 15824.68 ms. Allocated memory was 160.4 MB in the beginning and 4.9 GB in the end (delta: 4.7 GB). Free memory was 136.3 MB in the beginning and 4.3 GB in the end (delta: -4.2 GB). Peak memory consumption was 558.7 MB. Max. memory is 8.0 GB. [2020-12-21 23:17:39,953 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 160.4 MB. Free memory is still 132.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-21 23:17:39,954 INFO L168 Benchmark]: CACSL2BoogieTranslator took 462.85 ms. Allocated memory is still 160.4 MB. Free memory was 136.1 MB in the beginning and 125.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-21 23:17:39,954 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.67 ms. Allocated memory is still 160.4 MB. Free memory was 125.7 MB in the beginning and 124.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-21 23:17:39,955 INFO L168 Benchmark]: Boogie Preprocessor took 61.88 ms. Allocated memory is still 160.4 MB. Free memory was 124.0 MB in the beginning and 122.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-21 23:17:39,955 INFO L168 Benchmark]: RCFGBuilder took 539.99 ms. Allocated memory is still 160.4 MB. Free memory was 122.5 MB in the beginning and 137.9 MB in the end (delta: -15.4 MB). Peak memory consumption was 20.3 MB. Max. memory is 8.0 GB. [2020-12-21 23:17:39,956 INFO L168 Benchmark]: TraceAbstraction took 14594.61 ms. Allocated memory was 160.4 MB in the beginning and 4.9 GB in the end (delta: 4.7 GB). Free memory was 137.4 MB in the beginning and 4.3 GB in the end (delta: -4.2 GB). Peak memory consumption was 554.2 MB. Max. memory is 8.0 GB. [2020-12-21 23:17:39,956 INFO L168 Benchmark]: Witness Printer took 79.56 ms. Allocated memory is still 4.9 GB. Free memory was 4.3 GB in the beginning and 4.3 GB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-12-21 23:17:39,958 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 160.4 MB. Free memory is still 132.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 462.85 ms. Allocated memory is still 160.4 MB. Free memory was 136.1 MB in the beginning and 125.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 76.67 ms. Allocated memory is still 160.4 MB. Free memory was 125.7 MB in the beginning and 124.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 61.88 ms. Allocated memory is still 160.4 MB. Free memory was 124.0 MB in the beginning and 122.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 539.99 ms. Allocated memory is still 160.4 MB. Free memory was 122.5 MB in the beginning and 137.9 MB in the end (delta: -15.4 MB). Peak memory consumption was 20.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 14594.61 ms. Allocated memory was 160.4 MB in the beginning and 4.9 GB in the end (delta: 4.7 GB). Free memory was 137.4 MB in the beginning and 4.3 GB in the end (delta: -4.2 GB). Peak memory consumption was 554.2 MB. Max. memory is 8.0 GB. * Witness Printer took 79.56 ms. Allocated memory is still 4.9 GB. Free memory was 4.3 GB in the beginning and 4.3 GB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 177]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.4s, OverallIterations: 31, TraceHistogramMax: 1, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2753 SDtfs, 1400 SDslu, 1835 SDs, 0 SdLazy, 163 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31749occurred in iteration=29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.8s AutomataMinimizationTime, 31 MinimizatonAttempts, 6176 StatesRemovedByMinimization, 29 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 2057 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 720 NumberOfCodeBlocks, 720 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 689 ConstructedInterpolants, 0 QuantifiedInterpolants, 33510 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 31 InterpolantComputations, 31 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...