/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_13.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-21 23:17:29,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-21 23:17:29,028 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-21 23:17:29,064 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-21 23:17:29,130 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-21 23:17:29,183 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-21 23:17:29,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-21 23:17:29,187 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-21 23:17:29,187 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-21 23:17:29,188 INFO L138 SettingsManager]: * Use SBE=true [2020-12-21 23:17:29,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-21 23:17:29,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-21 23:17:29,189 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-21 23:17:29,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-21 23:17:29,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-21 23:17:29,192 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-21 23:17:29,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-21 23:17:29,192 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-21 23:17:29,192 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-21 23:17:29,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-21 23:17:29,193 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-21 23:17:29,193 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-21 23:17:29,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-21 23:17:29,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-21 23:17:29,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-21 23:17:29,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-21 23:17:29,196 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-21 23:17:29,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-21 23:17:29,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-21 23:17:29,196 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-21 23:17:29,196 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-21 23:17:29,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-21 23:17:29,613 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-21 23:17:29,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-21 23:17:29,618 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-21 23:17:29,619 INFO L275 PluginConnector]: CDTParser initialized [2020-12-21 23:17:29,620 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_13.c [2020-12-21 23:17:29,721 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6206e10e6/976b937d604445c68e09cdf294c40e02/FLAGfa9fa99b5 [2020-12-21 23:17:30,482 INFO L306 CDTParser]: Found 1 translation units. [2020-12-21 23:17:30,483 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_13.c [2020-12-21 23:17:30,492 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6206e10e6/976b937d604445c68e09cdf294c40e02/FLAGfa9fa99b5 [2020-12-21 23:17:30,852 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6206e10e6/976b937d604445c68e09cdf294c40e02 [2020-12-21 23:17:30,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-21 23:17:30,858 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-21 23:17:30,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-21 23:17:30,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-21 23:17:30,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-21 23:17:30,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:17:30" (1/1) ... [2020-12-21 23:17:30,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c0e67ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:30, skipping insertion in model container [2020-12-21 23:17:30,869 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:17:30" (1/1) ... [2020-12-21 23:17:30,877 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-21 23:17:30,921 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-21 23:17:31,170 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_13.c[4936,4949] [2020-12-21 23:17:31,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-21 23:17:31,192 INFO L203 MainTranslator]: Completed pre-run [2020-12-21 23:17:31,223 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_13.c[4936,4949] [2020-12-21 23:17:31,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-21 23:17:31,238 INFO L208 MainTranslator]: Completed translation [2020-12-21 23:17:31,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:31 WrapperNode [2020-12-21 23:17:31,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-21 23:17:31,240 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-21 23:17:31,240 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-21 23:17:31,240 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-21 23:17:31,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:31" (1/1) ... [2020-12-21 23:17:31,256 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:31" (1/1) ... [2020-12-21 23:17:31,282 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-21 23:17:31,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-21 23:17:31,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-21 23:17:31,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-21 23:17:31,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:31" (1/1) ... [2020-12-21 23:17:31,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:31" (1/1) ... [2020-12-21 23:17:31,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:31" (1/1) ... [2020-12-21 23:17:31,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:31" (1/1) ... [2020-12-21 23:17:31,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:31" (1/1) ... [2020-12-21 23:17:31,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:31" (1/1) ... [2020-12-21 23:17:31,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:31" (1/1) ... [2020-12-21 23:17:31,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-21 23:17:31,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-21 23:17:31,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-21 23:17:31,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-21 23:17:31,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:31" (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 23:17:31,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-21 23:17:31,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-21 23:17:31,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-21 23:17:31,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-21 23:17:31,961 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-21 23:17:31,961 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-21 23:17:31,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:17:31 BoogieIcfgContainer [2020-12-21 23:17:31,963 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-21 23:17:31,965 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-21 23:17:31,965 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-21 23:17:31,969 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-21 23:17:31,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:17:30" (1/3) ... [2020-12-21 23:17:31,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fcf161f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:17:31, skipping insertion in model container [2020-12-21 23:17:31,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:17:31" (2/3) ... [2020-12-21 23:17:31,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fcf161f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:17:31, skipping insertion in model container [2020-12-21 23:17:31,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:17:31" (3/3) ... [2020-12-21 23:17:31,972 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_13.c [2020-12-21 23:17:31,981 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-21 23:17:31,986 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-21 23:17:32,007 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-21 23:17:32,037 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-21 23:17:32,037 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-21 23:17:32,037 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-21 23:17:32,037 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-21 23:17:32,038 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-21 23:17:32,038 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-21 23:17:32,038 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-21 23:17:32,038 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-21 23:17:32,055 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-12-21 23:17:32,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-21 23:17:32,061 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:32,061 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 23:17:32,062 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:32,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:32,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1359894467, now seen corresponding path program 1 times [2020-12-21 23:17:32,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:32,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966804426] [2020-12-21 23:17:32,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:32,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:32,323 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 23:17:32,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966804426] [2020-12-21 23:17:32,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:32,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:32,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106201835] [2020-12-21 23:17:32,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:32,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:32,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:32,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:32,350 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 3 states. [2020-12-21 23:17:32,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:32,402 INFO L93 Difference]: Finished difference Result 101 states and 181 transitions. [2020-12-21 23:17:32,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:32,404 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-21 23:17:32,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:32,416 INFO L225 Difference]: With dead ends: 101 [2020-12-21 23:17:32,416 INFO L226 Difference]: Without dead ends: 87 [2020-12-21 23:17:32,419 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 23:17:32,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-12-21 23:17:32,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 59. [2020-12-21 23:17:32,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-21 23:17:32,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 110 transitions. [2020-12-21 23:17:32,466 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 110 transitions. Word has length 20 [2020-12-21 23:17:32,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:32,467 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 110 transitions. [2020-12-21 23:17:32,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:32,468 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 110 transitions. [2020-12-21 23:17:32,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-21 23:17:32,469 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:32,469 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 23:17:32,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-21 23:17:32,469 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:32,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:32,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1914004475, now seen corresponding path program 1 times [2020-12-21 23:17:32,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:32,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727114734] [2020-12-21 23:17:32,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:32,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:32,600 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 23:17:32,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727114734] [2020-12-21 23:17:32,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:32,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:32,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792837447] [2020-12-21 23:17:32,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:32,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:32,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:32,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:32,608 INFO L87 Difference]: Start difference. First operand 59 states and 110 transitions. Second operand 3 states. [2020-12-21 23:17:32,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:32,634 INFO L93 Difference]: Finished difference Result 144 states and 269 transitions. [2020-12-21 23:17:32,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:32,635 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-21 23:17:32,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:32,637 INFO L225 Difference]: With dead ends: 144 [2020-12-21 23:17:32,637 INFO L226 Difference]: Without dead ends: 87 [2020-12-21 23:17:32,638 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 23:17:32,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-12-21 23:17:32,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2020-12-21 23:17:32,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-12-21 23:17:32,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 158 transitions. [2020-12-21 23:17:32,651 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 158 transitions. Word has length 20 [2020-12-21 23:17:32,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:32,651 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 158 transitions. [2020-12-21 23:17:32,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:32,652 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 158 transitions. [2020-12-21 23:17:32,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-21 23:17:32,653 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:32,653 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 23:17:32,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-21 23:17:32,653 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:32,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:32,654 INFO L82 PathProgramCache]: Analyzing trace with hash 793156859, now seen corresponding path program 1 times [2020-12-21 23:17:32,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:32,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82498130] [2020-12-21 23:17:32,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:32,710 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 23:17:32,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82498130] [2020-12-21 23:17:32,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:32,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:32,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458524995] [2020-12-21 23:17:32,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:32,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:32,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:32,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:32,713 INFO L87 Difference]: Start difference. First operand 85 states and 158 transitions. Second operand 3 states. [2020-12-21 23:17:32,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:32,747 INFO L93 Difference]: Finished difference Result 132 states and 240 transitions. [2020-12-21 23:17:32,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:32,748 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-21 23:17:32,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:32,749 INFO L225 Difference]: With dead ends: 132 [2020-12-21 23:17:32,750 INFO L226 Difference]: Without dead ends: 90 [2020-12-21 23:17:32,751 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 23:17:32,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-12-21 23:17:32,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2020-12-21 23:17:32,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-21 23:17:32,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 160 transitions. [2020-12-21 23:17:32,763 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 160 transitions. Word has length 21 [2020-12-21 23:17:32,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:32,763 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 160 transitions. [2020-12-21 23:17:32,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:32,763 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 160 transitions. [2020-12-21 23:17:32,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-21 23:17:32,764 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:32,764 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 23:17:32,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-21 23:17:32,765 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:32,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:32,766 INFO L82 PathProgramCache]: Analyzing trace with hash -795191043, now seen corresponding path program 1 times [2020-12-21 23:17:32,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:32,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306388072] [2020-12-21 23:17:32,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:32,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:32,847 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 23:17:32,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306388072] [2020-12-21 23:17:32,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:32,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:32,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592327968] [2020-12-21 23:17:32,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:32,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:32,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:32,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:32,850 INFO L87 Difference]: Start difference. First operand 88 states and 160 transitions. Second operand 3 states. [2020-12-21 23:17:32,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:32,881 INFO L93 Difference]: Finished difference Result 169 states and 309 transitions. [2020-12-21 23:17:32,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:32,883 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-21 23:17:32,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:32,890 INFO L225 Difference]: With dead ends: 169 [2020-12-21 23:17:32,890 INFO L226 Difference]: Without dead ends: 167 [2020-12-21 23:17:32,891 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 23:17:32,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-12-21 23:17:32,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 117. [2020-12-21 23:17:32,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-12-21 23:17:32,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 213 transitions. [2020-12-21 23:17:32,918 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 213 transitions. Word has length 21 [2020-12-21 23:17:32,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:32,919 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 213 transitions. [2020-12-21 23:17:32,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:32,919 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 213 transitions. [2020-12-21 23:17:32,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-21 23:17:32,924 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:32,924 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 23:17:32,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-21 23:17:32,925 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:32,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:32,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1816259397, now seen corresponding path program 1 times [2020-12-21 23:17:32,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:32,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962970876] [2020-12-21 23:17:32,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:32,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:33,012 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 23:17:33,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962970876] [2020-12-21 23:17:33,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:33,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:33,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868176018] [2020-12-21 23:17:33,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:33,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:33,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:33,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:33,015 INFO L87 Difference]: Start difference. First operand 117 states and 213 transitions. Second operand 3 states. [2020-12-21 23:17:33,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:33,036 INFO L93 Difference]: Finished difference Result 281 states and 515 transitions. [2020-12-21 23:17:33,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:33,037 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-21 23:17:33,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:33,039 INFO L225 Difference]: With dead ends: 281 [2020-12-21 23:17:33,039 INFO L226 Difference]: Without dead ends: 169 [2020-12-21 23:17:33,040 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 23:17:33,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-12-21 23:17:33,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 167. [2020-12-21 23:17:33,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-12-21 23:17:33,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 303 transitions. [2020-12-21 23:17:33,056 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 303 transitions. Word has length 21 [2020-12-21 23:17:33,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:33,056 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 303 transitions. [2020-12-21 23:17:33,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:33,057 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 303 transitions. [2020-12-21 23:17:33,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-21 23:17:33,058 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:33,058 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 23:17:33,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-21 23:17:33,059 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:33,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:33,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1119094160, now seen corresponding path program 1 times [2020-12-21 23:17:33,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:33,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098500199] [2020-12-21 23:17:33,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:33,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:33,102 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 23:17:33,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098500199] [2020-12-21 23:17:33,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:33,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:33,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072372092] [2020-12-21 23:17:33,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:33,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:33,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:33,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:33,105 INFO L87 Difference]: Start difference. First operand 167 states and 303 transitions. Second operand 3 states. [2020-12-21 23:17:33,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:33,126 INFO L93 Difference]: Finished difference Result 252 states and 454 transitions. [2020-12-21 23:17:33,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:33,127 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-21 23:17:33,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:33,128 INFO L225 Difference]: With dead ends: 252 [2020-12-21 23:17:33,129 INFO L226 Difference]: Without dead ends: 171 [2020-12-21 23:17:33,130 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 23:17:33,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-12-21 23:17:33,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 169. [2020-12-21 23:17:33,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-12-21 23:17:33,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 303 transitions. [2020-12-21 23:17:33,146 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 303 transitions. Word has length 22 [2020-12-21 23:17:33,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:33,146 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 303 transitions. [2020-12-21 23:17:33,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:33,146 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 303 transitions. [2020-12-21 23:17:33,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-21 23:17:33,150 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:33,150 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 23:17:33,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-21 23:17:33,151 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:33,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:33,152 INFO L82 PathProgramCache]: Analyzing trace with hash -469253742, now seen corresponding path program 1 times [2020-12-21 23:17:33,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:33,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559134956] [2020-12-21 23:17:33,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:33,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:33,236 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 23:17:33,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559134956] [2020-12-21 23:17:33,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:33,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:33,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065169681] [2020-12-21 23:17:33,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:33,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:33,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:33,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:33,243 INFO L87 Difference]: Start difference. First operand 169 states and 303 transitions. Second operand 3 states. [2020-12-21 23:17:33,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:33,295 INFO L93 Difference]: Finished difference Result 489 states and 881 transitions. [2020-12-21 23:17:33,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:33,296 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-21 23:17:33,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:33,300 INFO L225 Difference]: With dead ends: 489 [2020-12-21 23:17:33,300 INFO L226 Difference]: Without dead ends: 327 [2020-12-21 23:17:33,302 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 23:17:33,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-12-21 23:17:33,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 325. [2020-12-21 23:17:33,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2020-12-21 23:17:33,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 579 transitions. [2020-12-21 23:17:33,332 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 579 transitions. Word has length 22 [2020-12-21 23:17:33,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:33,333 INFO L481 AbstractCegarLoop]: Abstraction has 325 states and 579 transitions. [2020-12-21 23:17:33,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:33,334 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 579 transitions. [2020-12-21 23:17:33,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-21 23:17:33,336 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:33,340 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 23:17:33,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-21 23:17:33,340 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:33,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:33,341 INFO L82 PathProgramCache]: Analyzing trace with hash 551814612, now seen corresponding path program 1 times [2020-12-21 23:17:33,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:33,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904372300] [2020-12-21 23:17:33,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:33,408 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 23:17:33,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904372300] [2020-12-21 23:17:33,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:33,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:33,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715290369] [2020-12-21 23:17:33,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:33,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:33,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:33,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:33,412 INFO L87 Difference]: Start difference. First operand 325 states and 579 transitions. Second operand 3 states. [2020-12-21 23:17:33,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:33,447 INFO L93 Difference]: Finished difference Result 417 states and 749 transitions. [2020-12-21 23:17:33,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:33,448 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-21 23:17:33,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:33,450 INFO L225 Difference]: With dead ends: 417 [2020-12-21 23:17:33,451 INFO L226 Difference]: Without dead ends: 415 [2020-12-21 23:17:33,451 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 23:17:33,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2020-12-21 23:17:33,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 325. [2020-12-21 23:17:33,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2020-12-21 23:17:33,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 575 transitions. [2020-12-21 23:17:33,471 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 575 transitions. Word has length 22 [2020-12-21 23:17:33,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:33,472 INFO L481 AbstractCegarLoop]: Abstraction has 325 states and 575 transitions. [2020-12-21 23:17:33,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:33,472 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 575 transitions. [2020-12-21 23:17:33,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-21 23:17:33,477 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:33,477 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 23:17:33,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-21 23:17:33,477 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:33,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:33,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1661751056, now seen corresponding path program 1 times [2020-12-21 23:17:33,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:33,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146081631] [2020-12-21 23:17:33,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:33,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:33,508 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 23:17:33,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146081631] [2020-12-21 23:17:33,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:33,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:33,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547324582] [2020-12-21 23:17:33,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:33,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:33,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:33,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:33,510 INFO L87 Difference]: Start difference. First operand 325 states and 575 transitions. Second operand 3 states. [2020-12-21 23:17:33,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:33,530 INFO L93 Difference]: Finished difference Result 613 states and 1097 transitions. [2020-12-21 23:17:33,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:33,531 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-21 23:17:33,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:33,534 INFO L225 Difference]: With dead ends: 613 [2020-12-21 23:17:33,535 INFO L226 Difference]: Without dead ends: 611 [2020-12-21 23:17:33,535 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 23:17:33,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2020-12-21 23:17:33,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 449. [2020-12-21 23:17:33,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2020-12-21 23:17:33,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 783 transitions. [2020-12-21 23:17:33,553 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 783 transitions. Word has length 23 [2020-12-21 23:17:33,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:33,553 INFO L481 AbstractCegarLoop]: Abstraction has 449 states and 783 transitions. [2020-12-21 23:17:33,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:33,554 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 783 transitions. [2020-12-21 23:17:33,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-21 23:17:33,555 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:33,555 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 23:17:33,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-21 23:17:33,555 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:33,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:33,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1612147886, now seen corresponding path program 1 times [2020-12-21 23:17:33,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:33,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007138239] [2020-12-21 23:17:33,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:33,584 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 23:17:33,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007138239] [2020-12-21 23:17:33,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:33,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:33,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866242300] [2020-12-21 23:17:33,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:33,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:33,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:33,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:33,587 INFO L87 Difference]: Start difference. First operand 449 states and 783 transitions. Second operand 3 states. [2020-12-21 23:17:33,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:33,609 INFO L93 Difference]: Finished difference Result 1077 states and 1889 transitions. [2020-12-21 23:17:33,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:33,610 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-21 23:17:33,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:33,614 INFO L225 Difference]: With dead ends: 1077 [2020-12-21 23:17:33,614 INFO L226 Difference]: Without dead ends: 635 [2020-12-21 23:17:33,615 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 23:17:33,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2020-12-21 23:17:33,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 633. [2020-12-21 23:17:33,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2020-12-21 23:17:33,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 1099 transitions. [2020-12-21 23:17:33,635 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 1099 transitions. Word has length 23 [2020-12-21 23:17:33,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:33,635 INFO L481 AbstractCegarLoop]: Abstraction has 633 states and 1099 transitions. [2020-12-21 23:17:33,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:33,636 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1099 transitions. [2020-12-21 23:17:33,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-21 23:17:33,637 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:33,637 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 23:17:33,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-21 23:17:33,637 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:33,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:33,638 INFO L82 PathProgramCache]: Analyzing trace with hash 25538215, now seen corresponding path program 1 times [2020-12-21 23:17:33,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:33,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508171614] [2020-12-21 23:17:33,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:33,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:33,686 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 23:17:33,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508171614] [2020-12-21 23:17:33,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:33,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:33,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838343157] [2020-12-21 23:17:33,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:33,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:33,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:33,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:33,691 INFO L87 Difference]: Start difference. First operand 633 states and 1099 transitions. Second operand 3 states. [2020-12-21 23:17:33,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:33,724 INFO L93 Difference]: Finished difference Result 957 states and 1657 transitions. [2020-12-21 23:17:33,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:33,725 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-21 23:17:33,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:33,730 INFO L225 Difference]: With dead ends: 957 [2020-12-21 23:17:33,730 INFO L226 Difference]: Without dead ends: 647 [2020-12-21 23:17:33,731 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 23:17:33,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2020-12-21 23:17:33,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 645. [2020-12-21 23:17:33,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 645 states. [2020-12-21 23:17:33,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1107 transitions. [2020-12-21 23:17:33,753 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1107 transitions. Word has length 24 [2020-12-21 23:17:33,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:33,754 INFO L481 AbstractCegarLoop]: Abstraction has 645 states and 1107 transitions. [2020-12-21 23:17:33,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:33,754 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1107 transitions. [2020-12-21 23:17:33,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-21 23:17:33,755 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:33,755 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 23:17:33,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-21 23:17:33,756 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:33,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:33,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1562809687, now seen corresponding path program 1 times [2020-12-21 23:17:33,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:33,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633133184] [2020-12-21 23:17:33,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:33,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:33,784 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 23:17:33,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633133184] [2020-12-21 23:17:33,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:33,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:33,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573102778] [2020-12-21 23:17:33,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:33,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:33,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:33,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:33,787 INFO L87 Difference]: Start difference. First operand 645 states and 1107 transitions. Second operand 3 states. [2020-12-21 23:17:33,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:33,813 INFO L93 Difference]: Finished difference Result 1193 states and 2077 transitions. [2020-12-21 23:17:33,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:33,814 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-21 23:17:33,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:33,820 INFO L225 Difference]: With dead ends: 1193 [2020-12-21 23:17:33,820 INFO L226 Difference]: Without dead ends: 1191 [2020-12-21 23:17:33,821 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 23:17:33,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2020-12-21 23:17:33,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 901. [2020-12-21 23:17:33,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-12-21 23:17:33,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1515 transitions. [2020-12-21 23:17:33,847 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1515 transitions. Word has length 24 [2020-12-21 23:17:33,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:33,848 INFO L481 AbstractCegarLoop]: Abstraction has 901 states and 1515 transitions. [2020-12-21 23:17:33,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:33,848 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1515 transitions. [2020-12-21 23:17:33,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-21 23:17:33,850 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:33,850 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 23:17:33,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-21 23:17:33,850 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:33,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:33,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1711089255, now seen corresponding path program 1 times [2020-12-21 23:17:33,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:33,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093801270] [2020-12-21 23:17:33,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:33,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:33,877 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 23:17:33,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093801270] [2020-12-21 23:17:33,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:33,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:33,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523921543] [2020-12-21 23:17:33,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:33,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:33,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:33,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:33,879 INFO L87 Difference]: Start difference. First operand 901 states and 1515 transitions. Second operand 3 states. [2020-12-21 23:17:33,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:33,928 INFO L93 Difference]: Finished difference Result 2137 states and 3613 transitions. [2020-12-21 23:17:33,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:33,929 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-21 23:17:33,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:33,937 INFO L225 Difference]: With dead ends: 2137 [2020-12-21 23:17:33,937 INFO L226 Difference]: Without dead ends: 1255 [2020-12-21 23:17:33,944 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 23:17:33,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2020-12-21 23:17:33,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1253. [2020-12-21 23:17:33,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1253 states. [2020-12-21 23:17:33,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 2099 transitions. [2020-12-21 23:17:33,988 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 2099 transitions. Word has length 24 [2020-12-21 23:17:33,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:33,991 INFO L481 AbstractCegarLoop]: Abstraction has 1253 states and 2099 transitions. [2020-12-21 23:17:33,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:33,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 2099 transitions. [2020-12-21 23:17:33,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-21 23:17:33,995 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:33,995 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 23:17:33,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-21 23:17:33,996 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:33,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:33,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1202246301, now seen corresponding path program 1 times [2020-12-21 23:17:33,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:33,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145469145] [2020-12-21 23:17:33,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:34,051 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 23:17:34,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145469145] [2020-12-21 23:17:34,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:34,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:34,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849935816] [2020-12-21 23:17:34,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:34,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:34,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:34,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:34,055 INFO L87 Difference]: Start difference. First operand 1253 states and 2099 transitions. Second operand 3 states. [2020-12-21 23:17:34,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:34,084 INFO L93 Difference]: Finished difference Result 1881 states and 3141 transitions. [2020-12-21 23:17:34,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:34,085 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-21 23:17:34,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:34,092 INFO L225 Difference]: With dead ends: 1881 [2020-12-21 23:17:34,092 INFO L226 Difference]: Without dead ends: 1271 [2020-12-21 23:17:34,095 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 23:17:34,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2020-12-21 23:17:34,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1269. [2020-12-21 23:17:34,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1269 states. [2020-12-21 23:17:34,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 2099 transitions. [2020-12-21 23:17:34,134 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 2099 transitions. Word has length 25 [2020-12-21 23:17:34,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:34,134 INFO L481 AbstractCegarLoop]: Abstraction has 1269 states and 2099 transitions. [2020-12-21 23:17:34,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:34,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 2099 transitions. [2020-12-21 23:17:34,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-21 23:17:34,136 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:34,136 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 23:17:34,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-21 23:17:34,137 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:34,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:34,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1504373093, now seen corresponding path program 1 times [2020-12-21 23:17:34,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:34,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526110659] [2020-12-21 23:17:34,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:34,167 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 23:17:34,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526110659] [2020-12-21 23:17:34,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:34,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:34,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028277354] [2020-12-21 23:17:34,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:34,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:34,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:34,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:34,170 INFO L87 Difference]: Start difference. First operand 1269 states and 2099 transitions. Second operand 3 states. [2020-12-21 23:17:34,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:34,202 INFO L93 Difference]: Finished difference Result 2313 states and 3893 transitions. [2020-12-21 23:17:34,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:34,203 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-21 23:17:34,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:34,214 INFO L225 Difference]: With dead ends: 2313 [2020-12-21 23:17:34,214 INFO L226 Difference]: Without dead ends: 2311 [2020-12-21 23:17:34,216 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 23:17:34,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2311 states. [2020-12-21 23:17:34,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2311 to 1797. [2020-12-21 23:17:34,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1797 states. [2020-12-21 23:17:34,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 2899 transitions. [2020-12-21 23:17:34,266 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 2899 transitions. Word has length 25 [2020-12-21 23:17:34,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:34,267 INFO L481 AbstractCegarLoop]: Abstraction has 1797 states and 2899 transitions. [2020-12-21 23:17:34,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:34,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 2899 transitions. [2020-12-21 23:17:34,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-21 23:17:34,270 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:34,270 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 23:17:34,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-21 23:17:34,270 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:34,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:34,271 INFO L82 PathProgramCache]: Analyzing trace with hash 483304739, now seen corresponding path program 1 times [2020-12-21 23:17:34,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:34,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149132599] [2020-12-21 23:17:34,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:34,293 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 23:17:34,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149132599] [2020-12-21 23:17:34,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:34,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:34,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835883427] [2020-12-21 23:17:34,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:34,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:34,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:34,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:34,295 INFO L87 Difference]: Start difference. First operand 1797 states and 2899 transitions. Second operand 3 states. [2020-12-21 23:17:34,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:34,337 INFO L93 Difference]: Finished difference Result 4233 states and 6869 transitions. [2020-12-21 23:17:34,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:34,338 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-21 23:17:34,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:34,349 INFO L225 Difference]: With dead ends: 4233 [2020-12-21 23:17:34,350 INFO L226 Difference]: Without dead ends: 2471 [2020-12-21 23:17:34,352 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 23:17:34,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2471 states. [2020-12-21 23:17:34,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2471 to 2469. [2020-12-21 23:17:34,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2469 states. [2020-12-21 23:17:34,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2469 states to 2469 states and 3971 transitions. [2020-12-21 23:17:34,441 INFO L78 Accepts]: Start accepts. Automaton has 2469 states and 3971 transitions. Word has length 25 [2020-12-21 23:17:34,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:34,441 INFO L481 AbstractCegarLoop]: Abstraction has 2469 states and 3971 transitions. [2020-12-21 23:17:34,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:34,441 INFO L276 IsEmpty]: Start isEmpty. Operand 2469 states and 3971 transitions. [2020-12-21 23:17:34,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-21 23:17:34,444 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:34,444 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 23:17:34,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-21 23:17:34,444 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:34,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:34,445 INFO L82 PathProgramCache]: Analyzing trace with hash -608860292, now seen corresponding path program 1 times [2020-12-21 23:17:34,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:34,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740414527] [2020-12-21 23:17:34,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:34,467 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 23:17:34,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740414527] [2020-12-21 23:17:34,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:34,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:34,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585089935] [2020-12-21 23:17:34,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:34,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:34,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:34,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:34,470 INFO L87 Difference]: Start difference. First operand 2469 states and 3971 transitions. Second operand 3 states. [2020-12-21 23:17:34,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:34,508 INFO L93 Difference]: Finished difference Result 3705 states and 5941 transitions. [2020-12-21 23:17:34,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:34,509 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-21 23:17:34,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:34,520 INFO L225 Difference]: With dead ends: 3705 [2020-12-21 23:17:34,520 INFO L226 Difference]: Without dead ends: 2503 [2020-12-21 23:17:34,522 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 23:17:34,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2503 states. [2020-12-21 23:17:34,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2503 to 2501. [2020-12-21 23:17:34,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2501 states. [2020-12-21 23:17:34,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2501 states to 2501 states and 3971 transitions. [2020-12-21 23:17:34,588 INFO L78 Accepts]: Start accepts. Automaton has 2501 states and 3971 transitions. Word has length 26 [2020-12-21 23:17:34,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:34,589 INFO L481 AbstractCegarLoop]: Abstraction has 2501 states and 3971 transitions. [2020-12-21 23:17:34,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:34,589 INFO L276 IsEmpty]: Start isEmpty. Operand 2501 states and 3971 transitions. [2020-12-21 23:17:34,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-21 23:17:34,592 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:34,592 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 23:17:34,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-21 23:17:34,592 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:34,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:34,593 INFO L82 PathProgramCache]: Analyzing trace with hash 2097759102, now seen corresponding path program 1 times [2020-12-21 23:17:34,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:34,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663686007] [2020-12-21 23:17:34,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:34,614 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 23:17:34,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663686007] [2020-12-21 23:17:34,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:34,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:34,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333557911] [2020-12-21 23:17:34,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:34,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:34,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:34,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:34,616 INFO L87 Difference]: Start difference. First operand 2501 states and 3971 transitions. Second operand 3 states. [2020-12-21 23:17:34,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:34,671 INFO L93 Difference]: Finished difference Result 4489 states and 7269 transitions. [2020-12-21 23:17:34,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:34,671 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-21 23:17:34,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:34,693 INFO L225 Difference]: With dead ends: 4489 [2020-12-21 23:17:34,693 INFO L226 Difference]: Without dead ends: 4487 [2020-12-21 23:17:34,695 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 23:17:34,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4487 states. [2020-12-21 23:17:34,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4487 to 3589. [2020-12-21 23:17:34,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3589 states. [2020-12-21 23:17:34,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3589 states to 3589 states and 5539 transitions. [2020-12-21 23:17:34,827 INFO L78 Accepts]: Start accepts. Automaton has 3589 states and 5539 transitions. Word has length 26 [2020-12-21 23:17:34,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:34,827 INFO L481 AbstractCegarLoop]: Abstraction has 3589 states and 5539 transitions. [2020-12-21 23:17:34,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:34,827 INFO L276 IsEmpty]: Start isEmpty. Operand 3589 states and 5539 transitions. [2020-12-21 23:17:34,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-21 23:17:34,832 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:34,833 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 23:17:34,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-21 23:17:34,833 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:34,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:34,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1076690748, now seen corresponding path program 1 times [2020-12-21 23:17:34,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:34,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553683890] [2020-12-21 23:17:34,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:34,854 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 23:17:34,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553683890] [2020-12-21 23:17:34,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:34,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:34,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545373257] [2020-12-21 23:17:34,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:34,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:34,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:34,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:34,856 INFO L87 Difference]: Start difference. First operand 3589 states and 5539 transitions. Second operand 3 states. [2020-12-21 23:17:34,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:34,948 INFO L93 Difference]: Finished difference Result 8393 states and 13029 transitions. [2020-12-21 23:17:34,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:34,948 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-21 23:17:34,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:34,972 INFO L225 Difference]: With dead ends: 8393 [2020-12-21 23:17:34,972 INFO L226 Difference]: Without dead ends: 4871 [2020-12-21 23:17:34,977 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 23:17:34,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4871 states. [2020-12-21 23:17:35,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4871 to 4869. [2020-12-21 23:17:35,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4869 states. [2020-12-21 23:17:35,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4869 states to 4869 states and 7491 transitions. [2020-12-21 23:17:35,117 INFO L78 Accepts]: Start accepts. Automaton has 4869 states and 7491 transitions. Word has length 26 [2020-12-21 23:17:35,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:35,117 INFO L481 AbstractCegarLoop]: Abstraction has 4869 states and 7491 transitions. [2020-12-21 23:17:35,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:35,117 INFO L276 IsEmpty]: Start isEmpty. Operand 4869 states and 7491 transitions. [2020-12-21 23:17:35,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-21 23:17:35,123 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:35,123 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 23:17:35,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-21 23:17:35,123 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:35,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:35,124 INFO L82 PathProgramCache]: Analyzing trace with hash 606237144, now seen corresponding path program 1 times [2020-12-21 23:17:35,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:35,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647362501] [2020-12-21 23:17:35,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:35,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:35,145 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 23:17:35,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647362501] [2020-12-21 23:17:35,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:35,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:35,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697873597] [2020-12-21 23:17:35,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:35,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:35,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:35,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:35,147 INFO L87 Difference]: Start difference. First operand 4869 states and 7491 transitions. Second operand 3 states. [2020-12-21 23:17:35,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:35,238 INFO L93 Difference]: Finished difference Result 7305 states and 11205 transitions. [2020-12-21 23:17:35,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:35,239 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-21 23:17:35,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:35,250 INFO L225 Difference]: With dead ends: 7305 [2020-12-21 23:17:35,251 INFO L226 Difference]: Without dead ends: 4935 [2020-12-21 23:17:35,254 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 23:17:35,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4935 states. [2020-12-21 23:17:35,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4935 to 4933. [2020-12-21 23:17:35,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4933 states. [2020-12-21 23:17:35,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4933 states to 4933 states and 7491 transitions. [2020-12-21 23:17:35,382 INFO L78 Accepts]: Start accepts. Automaton has 4933 states and 7491 transitions. Word has length 27 [2020-12-21 23:17:35,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:35,382 INFO L481 AbstractCegarLoop]: Abstraction has 4933 states and 7491 transitions. [2020-12-21 23:17:35,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:35,383 INFO L276 IsEmpty]: Start isEmpty. Operand 4933 states and 7491 transitions. [2020-12-21 23:17:35,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-21 23:17:35,388 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:35,388 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 23:17:35,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-21 23:17:35,389 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:35,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:35,389 INFO L82 PathProgramCache]: Analyzing trace with hash -982110758, now seen corresponding path program 1 times [2020-12-21 23:17:35,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:35,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661865695] [2020-12-21 23:17:35,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:35,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:35,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:17:35,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661865695] [2020-12-21 23:17:35,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:35,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:35,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136373350] [2020-12-21 23:17:35,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:35,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:35,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:35,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:35,412 INFO L87 Difference]: Start difference. First operand 4933 states and 7491 transitions. Second operand 3 states. [2020-12-21 23:17:35,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:35,538 INFO L93 Difference]: Finished difference Result 8713 states and 13509 transitions. [2020-12-21 23:17:35,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:35,538 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-21 23:17:35,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:35,558 INFO L225 Difference]: With dead ends: 8713 [2020-12-21 23:17:35,558 INFO L226 Difference]: Without dead ends: 8711 [2020-12-21 23:17:35,561 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 23:17:35,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8711 states. [2020-12-21 23:17:35,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8711 to 7173. [2020-12-21 23:17:35,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7173 states. [2020-12-21 23:17:35,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7173 states to 7173 states and 10563 transitions. [2020-12-21 23:17:35,771 INFO L78 Accepts]: Start accepts. Automaton has 7173 states and 10563 transitions. Word has length 27 [2020-12-21 23:17:35,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:35,771 INFO L481 AbstractCegarLoop]: Abstraction has 7173 states and 10563 transitions. [2020-12-21 23:17:35,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:35,772 INFO L276 IsEmpty]: Start isEmpty. Operand 7173 states and 10563 transitions. [2020-12-21 23:17:35,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-21 23:17:35,781 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:35,781 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 23:17:35,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-21 23:17:35,782 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:35,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:35,782 INFO L82 PathProgramCache]: Analyzing trace with hash -2003179112, now seen corresponding path program 1 times [2020-12-21 23:17:35,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:35,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946565277] [2020-12-21 23:17:35,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:35,801 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 23:17:35,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946565277] [2020-12-21 23:17:35,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:35,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:35,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337583378] [2020-12-21 23:17:35,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:35,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:35,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:35,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:35,804 INFO L87 Difference]: Start difference. First operand 7173 states and 10563 transitions. Second operand 3 states. [2020-12-21 23:17:35,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:35,983 INFO L93 Difference]: Finished difference Result 16649 states and 24645 transitions. [2020-12-21 23:17:35,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:35,983 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-21 23:17:35,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:36,003 INFO L225 Difference]: With dead ends: 16649 [2020-12-21 23:17:36,004 INFO L226 Difference]: Without dead ends: 9607 [2020-12-21 23:17:36,014 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 23:17:36,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9607 states. [2020-12-21 23:17:36,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9607 to 9605. [2020-12-21 23:17:36,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9605 states. [2020-12-21 23:17:36,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9605 states to 9605 states and 14083 transitions. [2020-12-21 23:17:36,274 INFO L78 Accepts]: Start accepts. Automaton has 9605 states and 14083 transitions. Word has length 27 [2020-12-21 23:17:36,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:36,274 INFO L481 AbstractCegarLoop]: Abstraction has 9605 states and 14083 transitions. [2020-12-21 23:17:36,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:36,274 INFO L276 IsEmpty]: Start isEmpty. Operand 9605 states and 14083 transitions. [2020-12-21 23:17:36,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-21 23:17:36,336 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:36,336 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 23:17:36,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-21 23:17:36,336 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:36,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:36,337 INFO L82 PathProgramCache]: Analyzing trace with hash -380447663, now seen corresponding path program 1 times [2020-12-21 23:17:36,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:36,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667474797] [2020-12-21 23:17:36,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:36,384 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 23:17:36,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667474797] [2020-12-21 23:17:36,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:36,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:36,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034087741] [2020-12-21 23:17:36,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:36,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:36,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:36,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:36,386 INFO L87 Difference]: Start difference. First operand 9605 states and 14083 transitions. Second operand 3 states. [2020-12-21 23:17:36,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:36,516 INFO L93 Difference]: Finished difference Result 14409 states and 21061 transitions. [2020-12-21 23:17:36,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:36,516 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-12-21 23:17:36,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:36,540 INFO L225 Difference]: With dead ends: 14409 [2020-12-21 23:17:36,540 INFO L226 Difference]: Without dead ends: 9735 [2020-12-21 23:17:36,549 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 23:17:36,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9735 states. [2020-12-21 23:17:36,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9735 to 9733. [2020-12-21 23:17:36,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9733 states. [2020-12-21 23:17:36,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9733 states to 9733 states and 14083 transitions. [2020-12-21 23:17:36,898 INFO L78 Accepts]: Start accepts. Automaton has 9733 states and 14083 transitions. Word has length 28 [2020-12-21 23:17:36,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:36,898 INFO L481 AbstractCegarLoop]: Abstraction has 9733 states and 14083 transitions. [2020-12-21 23:17:36,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:36,898 INFO L276 IsEmpty]: Start isEmpty. Operand 9733 states and 14083 transitions. [2020-12-21 23:17:36,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-21 23:17:36,908 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:36,909 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 23:17:36,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-21 23:17:36,909 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:36,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:36,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1968795565, now seen corresponding path program 1 times [2020-12-21 23:17:36,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:36,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775042326] [2020-12-21 23:17:36,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:36,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:36,929 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 23:17:36,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775042326] [2020-12-21 23:17:36,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:36,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:36,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158915900] [2020-12-21 23:17:36,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:36,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:36,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:36,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:36,934 INFO L87 Difference]: Start difference. First operand 9733 states and 14083 transitions. Second operand 3 states. [2020-12-21 23:17:37,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:37,183 INFO L93 Difference]: Finished difference Result 16905 states and 24965 transitions. [2020-12-21 23:17:37,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:37,184 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-12-21 23:17:37,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:37,218 INFO L225 Difference]: With dead ends: 16905 [2020-12-21 23:17:37,219 INFO L226 Difference]: Without dead ends: 16903 [2020-12-21 23:17:37,224 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 23:17:37,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16903 states. [2020-12-21 23:17:37,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16903 to 14341. [2020-12-21 23:17:37,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14341 states. [2020-12-21 23:17:37,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14341 states to 14341 states and 20099 transitions. [2020-12-21 23:17:37,630 INFO L78 Accepts]: Start accepts. Automaton has 14341 states and 20099 transitions. Word has length 28 [2020-12-21 23:17:37,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:37,631 INFO L481 AbstractCegarLoop]: Abstraction has 14341 states and 20099 transitions. [2020-12-21 23:17:37,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:37,631 INFO L276 IsEmpty]: Start isEmpty. Operand 14341 states and 20099 transitions. [2020-12-21 23:17:37,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-21 23:17:37,653 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:37,653 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 23:17:37,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-21 23:17:37,653 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:37,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:37,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1305103377, now seen corresponding path program 1 times [2020-12-21 23:17:37,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:37,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751060165] [2020-12-21 23:17:37,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:37,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:37,679 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 23:17:37,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751060165] [2020-12-21 23:17:37,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:37,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:37,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992844962] [2020-12-21 23:17:37,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:37,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:37,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:37,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:37,681 INFO L87 Difference]: Start difference. First operand 14341 states and 20099 transitions. Second operand 3 states. [2020-12-21 23:17:37,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:37,985 INFO L93 Difference]: Finished difference Result 33033 states and 46469 transitions. [2020-12-21 23:17:37,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:37,985 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-12-21 23:17:37,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:38,022 INFO L225 Difference]: With dead ends: 33033 [2020-12-21 23:17:38,022 INFO L226 Difference]: Without dead ends: 18951 [2020-12-21 23:17:38,041 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 23:17:38,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18951 states. [2020-12-21 23:17:38,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18951 to 18949. [2020-12-21 23:17:38,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18949 states. [2020-12-21 23:17:38,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18949 states to 18949 states and 26371 transitions. [2020-12-21 23:17:38,570 INFO L78 Accepts]: Start accepts. Automaton has 18949 states and 26371 transitions. Word has length 28 [2020-12-21 23:17:38,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:38,570 INFO L481 AbstractCegarLoop]: Abstraction has 18949 states and 26371 transitions. [2020-12-21 23:17:38,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:38,571 INFO L276 IsEmpty]: Start isEmpty. Operand 18949 states and 26371 transitions. [2020-12-21 23:17:38,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-21 23:17:38,593 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:38,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:38,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-21 23:17:38,593 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:38,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:38,594 INFO L82 PathProgramCache]: Analyzing trace with hash -902905267, now seen corresponding path program 1 times [2020-12-21 23:17:38,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:38,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916591683] [2020-12-21 23:17:38,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:38,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:38,622 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 23:17:38,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916591683] [2020-12-21 23:17:38,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:38,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:38,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841921259] [2020-12-21 23:17:38,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:38,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:38,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:38,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:38,625 INFO L87 Difference]: Start difference. First operand 18949 states and 26371 transitions. Second operand 3 states. [2020-12-21 23:17:38,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:38,845 INFO L93 Difference]: Finished difference Result 28425 states and 39429 transitions. [2020-12-21 23:17:38,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:38,845 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-12-21 23:17:38,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:38,886 INFO L225 Difference]: With dead ends: 28425 [2020-12-21 23:17:38,886 INFO L226 Difference]: Without dead ends: 19207 [2020-12-21 23:17:38,899 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 23:17:39,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19207 states. [2020-12-21 23:17:39,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19207 to 19205. [2020-12-21 23:17:39,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19205 states. [2020-12-21 23:17:39,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19205 states to 19205 states and 26371 transitions. [2020-12-21 23:17:39,645 INFO L78 Accepts]: Start accepts. Automaton has 19205 states and 26371 transitions. Word has length 29 [2020-12-21 23:17:39,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:39,646 INFO L481 AbstractCegarLoop]: Abstraction has 19205 states and 26371 transitions. [2020-12-21 23:17:39,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:39,646 INFO L276 IsEmpty]: Start isEmpty. Operand 19205 states and 26371 transitions. [2020-12-21 23:17:39,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-21 23:17:39,670 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:39,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:39,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-21 23:17:39,671 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:39,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:39,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1803714127, now seen corresponding path program 1 times [2020-12-21 23:17:39,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:39,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558729116] [2020-12-21 23:17:39,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:39,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:39,695 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 23:17:39,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558729116] [2020-12-21 23:17:39,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:39,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:39,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588108736] [2020-12-21 23:17:39,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:39,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:39,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:39,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:39,697 INFO L87 Difference]: Start difference. First operand 19205 states and 26371 transitions. Second operand 3 states. [2020-12-21 23:17:40,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:40,189 INFO L93 Difference]: Finished difference Result 32777 states and 45829 transitions. [2020-12-21 23:17:40,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:40,189 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-12-21 23:17:40,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:40,266 INFO L225 Difference]: With dead ends: 32777 [2020-12-21 23:17:40,267 INFO L226 Difference]: Without dead ends: 32775 [2020-12-21 23:17:40,273 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 23:17:40,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32775 states. [2020-12-21 23:17:41,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32775 to 28677. [2020-12-21 23:17:41,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28677 states. [2020-12-21 23:17:41,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28677 states to 28677 states and 38147 transitions. [2020-12-21 23:17:41,112 INFO L78 Accepts]: Start accepts. Automaton has 28677 states and 38147 transitions. Word has length 29 [2020-12-21 23:17:41,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:41,112 INFO L481 AbstractCegarLoop]: Abstraction has 28677 states and 38147 transitions. [2020-12-21 23:17:41,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:41,113 INFO L276 IsEmpty]: Start isEmpty. Operand 28677 states and 38147 transitions. [2020-12-21 23:17:41,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-21 23:17:41,171 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:41,171 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:41,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-21 23:17:41,172 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:41,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:41,172 INFO L82 PathProgramCache]: Analyzing trace with hash 782645773, now seen corresponding path program 1 times [2020-12-21 23:17:41,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:41,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764690006] [2020-12-21 23:17:41,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:41,203 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 23:17:41,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764690006] [2020-12-21 23:17:41,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:41,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:41,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917353717] [2020-12-21 23:17:41,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:41,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:41,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:41,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:41,205 INFO L87 Difference]: Start difference. First operand 28677 states and 38147 transitions. Second operand 3 states. [2020-12-21 23:17:41,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:41,957 INFO L93 Difference]: Finished difference Result 65545 states and 87301 transitions. [2020-12-21 23:17:41,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:41,958 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-12-21 23:17:41,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:42,041 INFO L225 Difference]: With dead ends: 65545 [2020-12-21 23:17:42,041 INFO L226 Difference]: Without dead ends: 37383 [2020-12-21 23:17:42,070 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 23:17:42,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37383 states. [2020-12-21 23:17:43,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37383 to 37381. [2020-12-21 23:17:43,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37381 states. [2020-12-21 23:17:43,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37381 states to 37381 states and 49155 transitions. [2020-12-21 23:17:43,278 INFO L78 Accepts]: Start accepts. Automaton has 37381 states and 49155 transitions. Word has length 29 [2020-12-21 23:17:43,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:43,279 INFO L481 AbstractCegarLoop]: Abstraction has 37381 states and 49155 transitions. [2020-12-21 23:17:43,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:43,279 INFO L276 IsEmpty]: Start isEmpty. Operand 37381 states and 49155 transitions. [2020-12-21 23:17:43,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-21 23:17:43,463 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:43,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:43,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-21 23:17:43,468 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:43,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:43,469 INFO L82 PathProgramCache]: Analyzing trace with hash 80778534, now seen corresponding path program 1 times [2020-12-21 23:17:43,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:43,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969323883] [2020-12-21 23:17:43,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:43,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:43,511 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 23:17:43,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969323883] [2020-12-21 23:17:43,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:43,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:43,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847558800] [2020-12-21 23:17:43,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:43,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:43,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:43,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:43,516 INFO L87 Difference]: Start difference. First operand 37381 states and 49155 transitions. Second operand 3 states. [2020-12-21 23:17:44,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:44,125 INFO L93 Difference]: Finished difference Result 56073 states and 73477 transitions. [2020-12-21 23:17:44,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:44,126 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-12-21 23:17:44,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:44,246 INFO L225 Difference]: With dead ends: 56073 [2020-12-21 23:17:44,247 INFO L226 Difference]: Without dead ends: 37895 [2020-12-21 23:17:44,263 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 23:17:44,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37895 states. [2020-12-21 23:17:45,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37895 to 37893. [2020-12-21 23:17:45,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37893 states. [2020-12-21 23:17:45,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37893 states to 37893 states and 49155 transitions. [2020-12-21 23:17:45,387 INFO L78 Accepts]: Start accepts. Automaton has 37893 states and 49155 transitions. Word has length 30 [2020-12-21 23:17:45,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:45,387 INFO L481 AbstractCegarLoop]: Abstraction has 37893 states and 49155 transitions. [2020-12-21 23:17:45,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:45,388 INFO L276 IsEmpty]: Start isEmpty. Operand 37893 states and 49155 transitions. [2020-12-21 23:17:45,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-21 23:17:45,414 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:45,414 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:45,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-21 23:17:45,414 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:45,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:45,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1507569368, now seen corresponding path program 1 times [2020-12-21 23:17:45,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:45,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861341185] [2020-12-21 23:17:45,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:45,434 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 23:17:45,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861341185] [2020-12-21 23:17:45,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:45,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:45,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465213870] [2020-12-21 23:17:45,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:45,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:45,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:45,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:45,440 INFO L87 Difference]: Start difference. First operand 37893 states and 49155 transitions. Second operand 3 states. [2020-12-21 23:17:46,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:46,646 INFO L93 Difference]: Finished difference Result 110601 states and 141317 transitions. [2020-12-21 23:17:46,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:46,646 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-12-21 23:17:46,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:46,772 INFO L225 Difference]: With dead ends: 110601 [2020-12-21 23:17:46,772 INFO L226 Difference]: Without dead ends: 73735 [2020-12-21 23:17:46,826 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 23:17:46,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73735 states. [2020-12-21 23:17:48,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73735 to 73733. [2020-12-21 23:17:48,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73733 states. [2020-12-21 23:17:48,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73733 states to 73733 states and 92163 transitions. [2020-12-21 23:17:48,965 INFO L78 Accepts]: Start accepts. Automaton has 73733 states and 92163 transitions. Word has length 30 [2020-12-21 23:17:48,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:48,965 INFO L481 AbstractCegarLoop]: Abstraction has 73733 states and 92163 transitions. [2020-12-21 23:17:48,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:48,965 INFO L276 IsEmpty]: Start isEmpty. Operand 73733 states and 92163 transitions. [2020-12-21 23:17:49,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-21 23:17:49,034 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:49,034 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:49,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-21 23:17:49,035 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:49,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:49,036 INFO L82 PathProgramCache]: Analyzing trace with hash -486501014, now seen corresponding path program 1 times [2020-12-21 23:17:49,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:49,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060775250] [2020-12-21 23:17:49,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:49,062 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 23:17:49,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060775250] [2020-12-21 23:17:49,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:49,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:49,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108822674] [2020-12-21 23:17:49,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:49,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:49,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:49,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:49,064 INFO L87 Difference]: Start difference. First operand 73733 states and 92163 transitions. Second operand 3 states. [2020-12-21 23:17:50,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:50,090 INFO L93 Difference]: Finished difference Result 79881 states and 102405 transitions. [2020-12-21 23:17:50,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:50,090 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-12-21 23:17:50,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:50,188 INFO L225 Difference]: With dead ends: 79881 [2020-12-21 23:17:50,188 INFO L226 Difference]: Without dead ends: 79879 [2020-12-21 23:17:50,203 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 23:17:50,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79879 states. [2020-12-21 23:17:51,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79879 to 73733. [2020-12-21 23:17:51,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73733 states. [2020-12-21 23:17:51,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73733 states to 73733 states and 91139 transitions. [2020-12-21 23:17:51,996 INFO L78 Accepts]: Start accepts. Automaton has 73733 states and 91139 transitions. Word has length 30 [2020-12-21 23:17:51,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:51,996 INFO L481 AbstractCegarLoop]: Abstraction has 73733 states and 91139 transitions. [2020-12-21 23:17:51,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:51,996 INFO L276 IsEmpty]: Start isEmpty. Operand 73733 states and 91139 transitions. [2020-12-21 23:17:52,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-21 23:17:52,042 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:52,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:52,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-21 23:17:52,042 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:52,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:52,044 INFO L82 PathProgramCache]: Analyzing trace with hash 510205634, now seen corresponding path program 1 times [2020-12-21 23:17:52,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:52,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983779744] [2020-12-21 23:17:52,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:52,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:52,070 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 23:17:52,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983779744] [2020-12-21 23:17:52,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:52,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:52,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038348715] [2020-12-21 23:17:52,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:52,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:52,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:52,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:52,073 INFO L87 Difference]: Start difference. First operand 73733 states and 91139 transitions. Second operand 3 states. [2020-12-21 23:17:53,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:53,196 INFO L93 Difference]: Finished difference Result 121865 states and 151557 transitions. [2020-12-21 23:17:53,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:53,196 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-12-21 23:17:53,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:53,354 INFO L225 Difference]: With dead ends: 121865 [2020-12-21 23:17:53,354 INFO L226 Difference]: Without dead ends: 121863 [2020-12-21 23:17:53,376 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 23:17:53,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121863 states. [2020-12-21 23:17:55,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121863 to 113669. [2020-12-21 23:17:55,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113669 states. [2020-12-21 23:17:55,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113669 states to 113669 states and 137219 transitions. [2020-12-21 23:17:55,537 INFO L78 Accepts]: Start accepts. Automaton has 113669 states and 137219 transitions. Word has length 31 [2020-12-21 23:17:55,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:17:55,537 INFO L481 AbstractCegarLoop]: Abstraction has 113669 states and 137219 transitions. [2020-12-21 23:17:55,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:17:55,537 INFO L276 IsEmpty]: Start isEmpty. Operand 113669 states and 137219 transitions. [2020-12-21 23:17:55,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-21 23:17:55,606 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:17:55,606 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:17:55,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-21 23:17:55,606 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:17:55,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:17:55,607 INFO L82 PathProgramCache]: Analyzing trace with hash -510862720, now seen corresponding path program 1 times [2020-12-21 23:17:55,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:17:55,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471926441] [2020-12-21 23:17:55,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:17:55,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:17:55,624 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 23:17:55,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471926441] [2020-12-21 23:17:55,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:17:55,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:17:55,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631575298] [2020-12-21 23:17:55,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:17:55,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:17:55,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:17:55,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:17:55,626 INFO L87 Difference]: Start difference. First operand 113669 states and 137219 transitions. Second operand 3 states. [2020-12-21 23:17:57,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:17:57,327 INFO L93 Difference]: Finished difference Result 257033 states and 309253 transitions. [2020-12-21 23:17:57,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:17:57,328 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-12-21 23:17:57,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:17:57,521 INFO L225 Difference]: With dead ends: 257033 [2020-12-21 23:17:57,521 INFO L226 Difference]: Without dead ends: 144391 [2020-12-21 23:17:57,619 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 23:17:57,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144391 states. [2020-12-21 23:18:00,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144391 to 144389. [2020-12-21 23:18:00,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144389 states. [2020-12-21 23:18:00,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144389 states to 144389 states and 169987 transitions. [2020-12-21 23:18:00,876 INFO L78 Accepts]: Start accepts. Automaton has 144389 states and 169987 transitions. Word has length 31 [2020-12-21 23:18:00,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:18:00,876 INFO L481 AbstractCegarLoop]: Abstraction has 144389 states and 169987 transitions. [2020-12-21 23:18:00,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:18:00,876 INFO L276 IsEmpty]: Start isEmpty. Operand 144389 states and 169987 transitions. [2020-12-21 23:18:00,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-21 23:18:00,962 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:18:00,963 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:18:00,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-21 23:18:00,963 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:18:00,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:18:00,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1363278403, now seen corresponding path program 1 times [2020-12-21 23:18:00,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:18:00,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197988037] [2020-12-21 23:18:00,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:18:00,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:18:00,989 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 23:18:00,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197988037] [2020-12-21 23:18:00,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:18:00,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:18:00,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253190413] [2020-12-21 23:18:00,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:18:00,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:18:00,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:18:00,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:18:00,991 INFO L87 Difference]: Start difference. First operand 144389 states and 169987 transitions. Second operand 3 states. [2020-12-21 23:18:02,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:18:02,627 INFO L93 Difference]: Finished difference Result 218121 states and 257029 transitions. [2020-12-21 23:18:02,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:18:02,628 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-12-21 23:18:02,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:18:02,830 INFO L225 Difference]: With dead ends: 218121 [2020-12-21 23:18:02,830 INFO L226 Difference]: Without dead ends: 147463 [2020-12-21 23:18:02,891 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 23:18:02,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147463 states. [2020-12-21 23:18:05,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147463 to 147461. [2020-12-21 23:18:05,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147461 states. [2020-12-21 23:18:05,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147461 states to 147461 states and 172035 transitions. [2020-12-21 23:18:05,943 INFO L78 Accepts]: Start accepts. Automaton has 147461 states and 172035 transitions. Word has length 32 [2020-12-21 23:18:05,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:18:05,943 INFO L481 AbstractCegarLoop]: Abstraction has 147461 states and 172035 transitions. [2020-12-21 23:18:05,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:18:05,944 INFO L276 IsEmpty]: Start isEmpty. Operand 147461 states and 172035 transitions. [2020-12-21 23:18:06,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-21 23:18:06,011 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:18:06,011 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:18:06,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-12-21 23:18:06,012 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:18:06,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:18:06,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1343340991, now seen corresponding path program 1 times [2020-12-21 23:18:06,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:18:06,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134431674] [2020-12-21 23:18:06,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:18:06,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:18:06,068 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 23:18:06,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134431674] [2020-12-21 23:18:06,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:18:06,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:18:06,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362653700] [2020-12-21 23:18:06,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:18:06,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:18:06,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:18:06,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:18:06,070 INFO L87 Difference]: Start difference. First operand 147461 states and 172035 transitions. Second operand 3 states. [2020-12-21 23:18:08,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:18:08,556 INFO L93 Difference]: Finished difference Result 237575 states and 274436 transitions. [2020-12-21 23:18:08,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:18:08,557 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-12-21 23:18:08,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:18:08,899 INFO L225 Difference]: With dead ends: 237575 [2020-12-21 23:18:08,900 INFO L226 Difference]: Without dead ends: 237573 [2020-12-21 23:18:08,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:18:09,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237573 states. [2020-12-21 23:18:12,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237573 to 229381. [2020-12-21 23:18:12,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229381 states. [2020-12-21 23:18:13,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229381 states to 229381 states and 262147 transitions. [2020-12-21 23:18:13,267 INFO L78 Accepts]: Start accepts. Automaton has 229381 states and 262147 transitions. Word has length 32 [2020-12-21 23:18:13,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:18:13,268 INFO L481 AbstractCegarLoop]: Abstraction has 229381 states and 262147 transitions. [2020-12-21 23:18:13,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:18:13,268 INFO L276 IsEmpty]: Start isEmpty. Operand 229381 states and 262147 transitions. [2020-12-21 23:18:13,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-21 23:18:13,430 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:18:13,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:18:13,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-12-21 23:18:13,430 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:18:13,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:18:13,431 INFO L82 PathProgramCache]: Analyzing trace with hash 322272637, now seen corresponding path program 1 times [2020-12-21 23:18:13,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:18:13,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025889970] [2020-12-21 23:18:13,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:18:13,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:18:13,450 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 23:18:13,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025889970] [2020-12-21 23:18:13,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:18:13,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:18:13,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161720959] [2020-12-21 23:18:13,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:18:13,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:18:13,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:18:13,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:18:13,457 INFO L87 Difference]: Start difference. First operand 229381 states and 262147 transitions. Second operand 3 states. [2020-12-21 23:18:16,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:18:16,506 INFO L93 Difference]: Finished difference Result 512005 states and 577539 transitions. [2020-12-21 23:18:16,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:18:16,509 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-12-21 23:18:16,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:18:16,510 INFO L225 Difference]: With dead ends: 512005 [2020-12-21 23:18:16,510 INFO L226 Difference]: Without dead ends: 0 [2020-12-21 23:18:16,696 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 23:18:16,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-21 23:18:16,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-21 23:18:16,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-21 23:18:16,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-21 23:18:16,696 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2020-12-21 23:18:16,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:18:16,697 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-21 23:18:16,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:18:16,697 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-21 23:18:16,697 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-21 23:18:16,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-12-21 23:18:16,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-21 23:18:16,784 INFO L189 CegarLoopUtils]: For program point L52(lines 52 54) no Hoare annotation was computed. [2020-12-21 23:18:16,785 INFO L189 CegarLoopUtils]: For program point L168(line 168) no Hoare annotation was computed. [2020-12-21 23:18:16,785 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-21 23:18:16,785 INFO L189 CegarLoopUtils]: For program point L152-1(lines 50 202) no Hoare annotation was computed. [2020-12-21 23:18:16,785 INFO L189 CegarLoopUtils]: For program point L119-1(lines 50 202) no Hoare annotation was computed. [2020-12-21 23:18:16,785 INFO L189 CegarLoopUtils]: For program point L103-1(lines 50 202) no Hoare annotation was computed. [2020-12-21 23:18:16,785 INFO L189 CegarLoopUtils]: For program point L153(line 153) no Hoare annotation was computed. [2020-12-21 23:18:16,785 INFO L189 CegarLoopUtils]: For program point L87-1(lines 50 202) no Hoare annotation was computed. [2020-12-21 23:18:16,785 INFO L192 CegarLoopUtils]: At program point L203(lines 7 207) the Hoare annotation is: true [2020-12-21 23:18:16,786 INFO L189 CegarLoopUtils]: For program point L137-1(lines 50 202) no Hoare annotation was computed. [2020-12-21 23:18:16,786 INFO L189 CegarLoopUtils]: For program point L187-1(lines 50 202) no Hoare annotation was computed. [2020-12-21 23:18:16,786 INFO L189 CegarLoopUtils]: For program point L138(line 138) no Hoare annotation was computed. [2020-12-21 23:18:16,786 INFO L189 CegarLoopUtils]: For program point L188(line 188) no Hoare annotation was computed. [2020-12-21 23:18:16,786 INFO L189 CegarLoopUtils]: For program point L172-1(lines 50 202) no Hoare annotation was computed. [2020-12-21 23:18:16,789 INFO L189 CegarLoopUtils]: For program point L123-1(lines 50 202) no Hoare annotation was computed. [2020-12-21 23:18:16,789 INFO L192 CegarLoopUtils]: At program point L206(lines 6 207) the Hoare annotation is: true [2020-12-21 23:18:16,789 INFO L189 CegarLoopUtils]: For program point L173(line 173) no Hoare annotation was computed. [2020-12-21 23:18:16,790 INFO L189 CegarLoopUtils]: For program point L107-1(lines 50 202) no Hoare annotation was computed. [2020-12-21 23:18:16,790 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-21 23:18:16,790 INFO L189 CegarLoopUtils]: For program point L157-1(lines 50 202) no Hoare annotation was computed. [2020-12-21 23:18:16,790 INFO L189 CegarLoopUtils]: For program point L91-1(lines 50 202) no Hoare annotation was computed. [2020-12-21 23:18:16,790 INFO L189 CegarLoopUtils]: For program point L158(line 158) no Hoare annotation was computed. [2020-12-21 23:18:16,790 INFO L189 CegarLoopUtils]: For program point L142-1(lines 50 202) no Hoare annotation was computed. [2020-12-21 23:18:16,790 INFO L189 CegarLoopUtils]: For program point L192-1(lines 50 202) no Hoare annotation was computed. [2020-12-21 23:18:16,794 INFO L189 CegarLoopUtils]: For program point L143(line 143) no Hoare annotation was computed. [2020-12-21 23:18:16,794 INFO L189 CegarLoopUtils]: For program point L193(line 193) no Hoare annotation was computed. [2020-12-21 23:18:16,794 INFO L189 CegarLoopUtils]: For program point L127-1(lines 50 202) no Hoare annotation was computed. [2020-12-21 23:18:16,794 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-21 23:18:16,795 INFO L189 CegarLoopUtils]: For program point L177-1(lines 50 202) no Hoare annotation was computed. [2020-12-21 23:18:16,795 INFO L189 CegarLoopUtils]: For program point L111-1(lines 50 202) no Hoare annotation was computed. [2020-12-21 23:18:16,795 INFO L189 CegarLoopUtils]: For program point L95-1(lines 50 202) no Hoare annotation was computed. [2020-12-21 23:18:16,795 INFO L189 CegarLoopUtils]: For program point L178(line 178) no Hoare annotation was computed. [2020-12-21 23:18:16,795 INFO L189 CegarLoopUtils]: For program point L162-1(lines 50 202) no Hoare annotation was computed. [2020-12-21 23:18:16,795 INFO L189 CegarLoopUtils]: For program point L163(line 163) no Hoare annotation was computed. [2020-12-21 23:18:16,795 INFO L189 CegarLoopUtils]: For program point L147-1(lines 50 202) no Hoare annotation was computed. [2020-12-21 23:18:16,795 INFO L192 CegarLoopUtils]: At program point L197-1(lines 50 202) the Hoare annotation is: true [2020-12-21 23:18:16,795 INFO L189 CegarLoopUtils]: For program point L131-1(lines 50 202) no Hoare annotation was computed. [2020-12-21 23:18:16,795 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-21 23:18:16,796 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 205) no Hoare annotation was computed. [2020-12-21 23:18:16,796 INFO L189 CegarLoopUtils]: For program point L148(line 148) no Hoare annotation was computed. [2020-12-21 23:18:16,796 INFO L189 CegarLoopUtils]: For program point L115-1(lines 50 202) no Hoare annotation was computed. [2020-12-21 23:18:16,796 INFO L189 CegarLoopUtils]: For program point L198(line 198) no Hoare annotation was computed. [2020-12-21 23:18:16,796 INFO L185 CegarLoopUtils]: At program point L198-1(lines 7 207) the Hoare annotation is: false [2020-12-21 23:18:16,797 INFO L189 CegarLoopUtils]: For program point L99-1(lines 50 202) no Hoare annotation was computed. [2020-12-21 23:18:16,797 INFO L189 CegarLoopUtils]: For program point L182-1(lines 50 202) no Hoare annotation was computed. [2020-12-21 23:18:16,797 INFO L189 CegarLoopUtils]: For program point L83(lines 83 85) no Hoare annotation was computed. [2020-12-21 23:18:16,798 INFO L189 CegarLoopUtils]: For program point L83-2(lines 50 202) no Hoare annotation was computed. [2020-12-21 23:18:16,798 INFO L189 CegarLoopUtils]: For program point L183(line 183) no Hoare annotation was computed. [2020-12-21 23:18:16,798 INFO L189 CegarLoopUtils]: For program point L167-1(lines 50 202) no Hoare annotation was computed. [2020-12-21 23:18:16,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 11:18:16 BoogieIcfgContainer [2020-12-21 23:18:16,827 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-21 23:18:16,827 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-21 23:18:16,827 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-21 23:18:16,828 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-21 23:18:16,830 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:17:31" (3/4) ... [2020-12-21 23:18:16,837 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-21 23:18:16,870 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-21 23:18:16,871 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-21 23:18:16,871 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-21 23:18:16,871 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-21 23:18:16,996 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/locks/test_locks_13.c-witness.graphml [2020-12-21 23:18:16,996 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-21 23:18:16,999 INFO L168 Benchmark]: Toolchain (without parser) took 46140.14 ms. Allocated memory was 153.1 MB in the beginning and 7.9 GB in the end (delta: 7.8 GB). Free memory was 128.6 MB in the beginning and 4.6 GB in the end (delta: -4.4 GB). Peak memory consumption was 3.3 GB. Max. memory is 8.0 GB. [2020-12-21 23:18:16,999 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 153.1 MB. Free memory is still 125.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-21 23:18:17,000 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.70 ms. Allocated memory is still 153.1 MB. Free memory was 128.4 MB in the beginning and 117.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-21 23:18:17,000 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.36 ms. Allocated memory is still 153.1 MB. Free memory was 117.7 MB in the beginning and 115.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-21 23:18:17,001 INFO L168 Benchmark]: Boogie Preprocessor took 36.66 ms. Allocated memory is still 153.1 MB. Free memory was 115.9 MB in the beginning and 114.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-21 23:18:17,001 INFO L168 Benchmark]: RCFGBuilder took 642.93 ms. Allocated memory is still 153.1 MB. Free memory was 114.5 MB in the beginning and 122.6 MB in the end (delta: -8.1 MB). Peak memory consumption was 12.8 MB. Max. memory is 8.0 GB. [2020-12-21 23:18:17,001 INFO L168 Benchmark]: TraceAbstraction took 44862.06 ms. Allocated memory was 153.1 MB in the beginning and 7.9 GB in the end (delta: 7.8 GB). Free memory was 122.0 MB in the beginning and 4.6 GB in the end (delta: -4.4 GB). Peak memory consumption was 3.3 GB. Max. memory is 8.0 GB. [2020-12-21 23:18:17,002 INFO L168 Benchmark]: Witness Printer took 168.76 ms. Allocated memory is still 7.9 GB. Free memory was 4.6 GB in the beginning and 4.6 GB in the end (delta: 4.8 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-12-21 23:18:17,004 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 153.1 MB. Free memory is still 125.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 377.70 ms. Allocated memory is still 153.1 MB. Free memory was 128.4 MB in the beginning and 117.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 42.36 ms. Allocated memory is still 153.1 MB. Free memory was 117.7 MB in the beginning and 115.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.66 ms. Allocated memory is still 153.1 MB. Free memory was 115.9 MB in the beginning and 114.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 642.93 ms. Allocated memory is still 153.1 MB. Free memory was 114.5 MB in the beginning and 122.6 MB in the end (delta: -8.1 MB). Peak memory consumption was 12.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 44862.06 ms. Allocated memory was 153.1 MB in the beginning and 7.9 GB in the end (delta: 7.8 GB). Free memory was 122.0 MB in the beginning and 4.6 GB in the end (delta: -4.4 GB). Peak memory consumption was 3.3 GB. Max. memory is 8.0 GB. * Witness Printer took 168.76 ms. Allocated memory is still 7.9 GB. Free memory was 4.6 GB in the beginning and 4.6 GB in the end (delta: 4.8 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 205]: 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: 0 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 49 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 44.6s, OverallIterations: 36, TraceHistogramMax: 1, AutomataDifference: 18.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3801 SDtfs, 1926 SDslu, 2568 SDs, 0 SdLazy, 191 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=229381occurred in iteration=35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 23.3s AutomataMinimizationTime, 36 MinimizatonAttempts, 32806 StatesRemovedByMinimization, 35 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8201 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 940 NumberOfCodeBlocks, 940 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 904 ConstructedInterpolants, 0 QuantifiedInterpolants, 50632 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 36 InterpolantComputations, 36 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...