/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/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 10:24:06,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 10:24:06,600 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 10:24:06,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 10:24:06,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 10:24:06,636 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 10:24:06,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 10:24:06,640 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 10:24:06,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 10:24:06,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 10:24:06,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 10:24:06,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 10:24:06,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 10:24:06,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 10:24:06,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 10:24:06,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 10:24:06,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 10:24:06,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 10:24:06,656 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 10:24:06,658 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 10:24:06,661 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 10:24:06,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 10:24:06,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 10:24:06,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 10:24:06,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 10:24:06,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 10:24:06,704 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 10:24:06,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 10:24:06,707 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 10:24:06,758 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 10:24:06,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 10:24:06,762 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 10:24:06,763 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 10:24:06,763 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 10:24:06,763 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 10:24:06,764 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 10:24:06,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 10:24:06,764 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 10:24:06,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 10:24:06,765 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 10:24:06,766 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 10:24:06,766 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 10:24:06,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 10:24:06,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 10:24:06,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 10:24:06,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 10:24:06,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 10:24:06,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 10:24:06,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 10:24:06,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 10:24:06,768 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 10:24:06,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 10:24:06,768 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 10:24:06,768 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 10:24:06,769 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 10:24:07,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 10:24:07,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 10:24:07,232 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 10:24:07,234 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 10:24:07,234 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 10:24:07,236 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label03.c [2020-12-22 10:24:07,320 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8715b2852/c114b699287848fa8088df8e6fec4c8d/FLAG70594fe37 [2020-12-22 10:24:08,398 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 10:24:08,399 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label03.c [2020-12-22 10:24:08,447 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8715b2852/c114b699287848fa8088df8e6fec4c8d/FLAG70594fe37 [2020-12-22 10:24:08,860 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8715b2852/c114b699287848fa8088df8e6fec4c8d [2020-12-22 10:24:08,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 10:24:08,866 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 10:24:08,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 10:24:08,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 10:24:08,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 10:24:08,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:24:08" (1/1) ... [2020-12-22 10:24:08,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a2b648e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:24:08, skipping insertion in model container [2020-12-22 10:24:08,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:24:08" (1/1) ... [2020-12-22 10:24:08,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 10:24:09,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 10:24:09,673 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/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label03.c[26875,26888] [2020-12-22 10:24:09,705 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/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label03.c[28969,28982] [2020-12-22 10:24:10,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:24:10,577 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 10:24:10,699 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/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label03.c[26875,26888] [2020-12-22 10:24:10,706 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/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label03.c[28969,28982] [2020-12-22 10:24:11,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:24:11,325 INFO L208 MainTranslator]: Completed translation [2020-12-22 10:24:11,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:24:11 WrapperNode [2020-12-22 10:24:11,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 10:24:11,327 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 10:24:11,327 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 10:24:11,327 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 10:24:11,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:24:11" (1/1) ... [2020-12-22 10:24:11,439 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:24:11" (1/1) ... [2020-12-22 10:24:11,827 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 10:24:11,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 10:24:11,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 10:24:11,829 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 10:24:11,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:24:11" (1/1) ... [2020-12-22 10:24:11,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:24:11" (1/1) ... [2020-12-22 10:24:11,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:24:11" (1/1) ... [2020-12-22 10:24:11,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:24:11" (1/1) ... [2020-12-22 10:24:12,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:24:11" (1/1) ... [2020-12-22 10:24:12,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:24:11" (1/1) ... [2020-12-22 10:24:12,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:24:11" (1/1) ... [2020-12-22 10:24:12,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 10:24:12,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 10:24:12,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 10:24:12,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 10:24:12,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:24:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 10:24:12,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 10:24:12,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 10:24:12,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 10:24:12,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 10:24:19,131 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 10:24:19,132 INFO L299 CfgBuilder]: Removed 42 assume(true) statements. [2020-12-22 10:24:19,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:24:19 BoogieIcfgContainer [2020-12-22 10:24:19,135 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 10:24:19,137 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 10:24:19,137 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 10:24:19,141 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 10:24:19,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:24:08" (1/3) ... [2020-12-22 10:24:19,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23c5276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:24:19, skipping insertion in model container [2020-12-22 10:24:19,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:24:11" (2/3) ... [2020-12-22 10:24:19,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23c5276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:24:19, skipping insertion in model container [2020-12-22 10:24:19,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:24:19" (3/3) ... [2020-12-22 10:24:19,144 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label03.c [2020-12-22 10:24:19,151 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 10:24:19,157 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 10:24:19,176 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 10:24:19,210 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 10:24:19,211 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 10:24:19,211 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 10:24:19,211 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 10:24:19,211 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 10:24:19,212 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 10:24:19,212 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 10:24:19,212 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 10:24:19,256 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states. [2020-12-22 10:24:19,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 10:24:19,265 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:24:19,266 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] [2020-12-22 10:24:19,267 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:24:19,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:24:19,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1742139493, now seen corresponding path program 1 times [2020-12-22 10:24:19,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:24:19,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86103095] [2020-12-22 10:24:19,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:24:19,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:24:19,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:24:19,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86103095] [2020-12-22 10:24:19,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:24:19,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 10:24:19,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510991277] [2020-12-22 10:24:19,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:24:19,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:24:19,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:24:19,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:24:19,677 INFO L87 Difference]: Start difference. First operand 964 states. Second operand 3 states. [2020-12-22 10:24:26,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:24:26,090 INFO L93 Difference]: Finished difference Result 2614 states and 5016 transitions. [2020-12-22 10:24:26,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:24:26,092 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-22 10:24:26,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:24:26,123 INFO L225 Difference]: With dead ends: 2614 [2020-12-22 10:24:26,123 INFO L226 Difference]: Without dead ends: 1649 [2020-12-22 10:24:26,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:24:26,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2020-12-22 10:24:26,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1649. [2020-12-22 10:24:26,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1649 states. [2020-12-22 10:24:26,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 2717 transitions. [2020-12-22 10:24:26,298 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 2717 transitions. Word has length 20 [2020-12-22 10:24:26,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:24:26,299 INFO L481 AbstractCegarLoop]: Abstraction has 1649 states and 2717 transitions. [2020-12-22 10:24:26,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:24:26,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 2717 transitions. [2020-12-22 10:24:26,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 10:24:26,302 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:24:26,302 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:24:26,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 10:24:26,303 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:24:26,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:24:26,303 INFO L82 PathProgramCache]: Analyzing trace with hash 2117945689, now seen corresponding path program 1 times [2020-12-22 10:24:26,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:24:26,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400125106] [2020-12-22 10:24:26,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:24:26,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:24:26,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:24:26,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400125106] [2020-12-22 10:24:26,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:24:26,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 10:24:26,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103879458] [2020-12-22 10:24:26,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 10:24:26,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:24:26,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 10:24:26,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 10:24:26,497 INFO L87 Difference]: Start difference. First operand 1649 states and 2717 transitions. Second operand 5 states. [2020-12-22 10:24:26,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:24:26,637 INFO L93 Difference]: Finished difference Result 1730 states and 2844 transitions. [2020-12-22 10:24:26,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 10:24:26,638 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-12-22 10:24:26,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:24:26,648 INFO L225 Difference]: With dead ends: 1730 [2020-12-22 10:24:26,648 INFO L226 Difference]: Without dead ends: 1649 [2020-12-22 10:24:26,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 10:24:26,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2020-12-22 10:24:26,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1649. [2020-12-22 10:24:26,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1649 states. [2020-12-22 10:24:26,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 2656 transitions. [2020-12-22 10:24:26,691 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 2656 transitions. Word has length 46 [2020-12-22 10:24:26,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:24:26,691 INFO L481 AbstractCegarLoop]: Abstraction has 1649 states and 2656 transitions. [2020-12-22 10:24:26,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 10:24:26,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 2656 transitions. [2020-12-22 10:24:26,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 10:24:26,702 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:24:26,703 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:24:26,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 10:24:26,704 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:24:26,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:24:26,706 INFO L82 PathProgramCache]: Analyzing trace with hash 360400627, now seen corresponding path program 1 times [2020-12-22 10:24:26,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:24:26,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710450902] [2020-12-22 10:24:26,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:24:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:24:27,019 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:24:27,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710450902] [2020-12-22 10:24:27,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724555048] [2020-12-22 10:24:27,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 10:24:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:24:27,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 10:24:27,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 10:24:27,388 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:24:27,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 10:24:27,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2020-12-22 10:24:27,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505841107] [2020-12-22 10:24:27,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:24:27,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:24:27,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:24:27,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 10:24:27,397 INFO L87 Difference]: Start difference. First operand 1649 states and 2656 transitions. Second operand 3 states. [2020-12-22 10:24:32,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:24:32,955 INFO L93 Difference]: Finished difference Result 4655 states and 7583 transitions. [2020-12-22 10:24:32,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:24:32,956 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-22 10:24:32,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:24:32,972 INFO L225 Difference]: With dead ends: 4655 [2020-12-22 10:24:32,973 INFO L226 Difference]: Without dead ends: 3151 [2020-12-22 10:24:32,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 10:24:32,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3151 states. [2020-12-22 10:24:33,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3151 to 3151. [2020-12-22 10:24:33,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3151 states. [2020-12-22 10:24:33,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3151 states to 3151 states and 4476 transitions. [2020-12-22 10:24:33,036 INFO L78 Accepts]: Start accepts. Automaton has 3151 states and 4476 transitions. Word has length 91 [2020-12-22 10:24:33,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:24:33,037 INFO L481 AbstractCegarLoop]: Abstraction has 3151 states and 4476 transitions. [2020-12-22 10:24:33,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:24:33,037 INFO L276 IsEmpty]: Start isEmpty. Operand 3151 states and 4476 transitions. [2020-12-22 10:24:33,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 10:24:33,039 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:24:33,039 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:24:33,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-22 10:24:33,254 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:24:33,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:24:33,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1628812989, now seen corresponding path program 1 times [2020-12-22 10:24:33,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:24:33,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891390068] [2020-12-22 10:24:33,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:24:33,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:24:33,419 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:24:33,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891390068] [2020-12-22 10:24:33,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:24:33,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 10:24:33,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406780270] [2020-12-22 10:24:33,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:24:33,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:24:33,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:24:33,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:24:33,423 INFO L87 Difference]: Start difference. First operand 3151 states and 4476 transitions. Second operand 3 states. [2020-12-22 10:24:40,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:24:40,336 INFO L93 Difference]: Finished difference Result 9163 states and 13044 transitions. [2020-12-22 10:24:40,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:24:40,337 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-12-22 10:24:40,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:24:40,367 INFO L225 Difference]: With dead ends: 9163 [2020-12-22 10:24:40,367 INFO L226 Difference]: Without dead ends: 6157 [2020-12-22 10:24:40,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:24:40,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6157 states. [2020-12-22 10:24:40,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6157 to 6155. [2020-12-22 10:24:40,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6155 states. [2020-12-22 10:24:40,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6155 states to 6155 states and 8177 transitions. [2020-12-22 10:24:40,545 INFO L78 Accepts]: Start accepts. Automaton has 6155 states and 8177 transitions. Word has length 95 [2020-12-22 10:24:40,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:24:40,548 INFO L481 AbstractCegarLoop]: Abstraction has 6155 states and 8177 transitions. [2020-12-22 10:24:40,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:24:40,548 INFO L276 IsEmpty]: Start isEmpty. Operand 6155 states and 8177 transitions. [2020-12-22 10:24:40,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 10:24:40,551 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:24:40,551 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:24:40,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 10:24:40,551 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:24:40,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:24:40,553 INFO L82 PathProgramCache]: Analyzing trace with hash 211182729, now seen corresponding path program 1 times [2020-12-22 10:24:40,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:24:40,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67317025] [2020-12-22 10:24:40,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:24:40,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:24:40,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:24:40,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67317025] [2020-12-22 10:24:40,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:24:40,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:24:40,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698632364] [2020-12-22 10:24:40,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:24:40,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:24:40,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:24:40,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:24:40,762 INFO L87 Difference]: Start difference. First operand 6155 states and 8177 transitions. Second operand 3 states. [2020-12-22 10:24:40,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:24:40,842 INFO L93 Difference]: Finished difference Result 6303 states and 8413 transitions. [2020-12-22 10:24:40,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:24:40,843 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-22 10:24:40,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:24:40,878 INFO L225 Difference]: With dead ends: 6303 [2020-12-22 10:24:40,879 INFO L226 Difference]: Without dead ends: 6226 [2020-12-22 10:24:40,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:24:40,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6226 states. [2020-12-22 10:24:41,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6226 to 6224. [2020-12-22 10:24:41,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6224 states. [2020-12-22 10:24:41,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6224 states to 6224 states and 8288 transitions. [2020-12-22 10:24:41,025 INFO L78 Accepts]: Start accepts. Automaton has 6224 states and 8288 transitions. Word has length 106 [2020-12-22 10:24:41,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:24:41,027 INFO L481 AbstractCegarLoop]: Abstraction has 6224 states and 8288 transitions. [2020-12-22 10:24:41,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:24:41,027 INFO L276 IsEmpty]: Start isEmpty. Operand 6224 states and 8288 transitions. [2020-12-22 10:24:41,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 10:24:41,029 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:24:41,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:24:41,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 10:24:41,030 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:24:41,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:24:41,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1458691583, now seen corresponding path program 1 times [2020-12-22 10:24:41,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:24:41,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722713959] [2020-12-22 10:24:41,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:24:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:24:41,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:24:41,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722713959] [2020-12-22 10:24:41,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:24:41,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:24:41,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319875756] [2020-12-22 10:24:41,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:24:41,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:24:41,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:24:41,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:24:41,185 INFO L87 Difference]: Start difference. First operand 6224 states and 8288 transitions. Second operand 3 states. [2020-12-22 10:24:41,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:24:41,248 INFO L93 Difference]: Finished difference Result 6504 states and 8736 transitions. [2020-12-22 10:24:41,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:24:41,249 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-22 10:24:41,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:24:41,290 INFO L225 Difference]: With dead ends: 6504 [2020-12-22 10:24:41,290 INFO L226 Difference]: Without dead ends: 6358 [2020-12-22 10:24:41,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:24:41,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6358 states. [2020-12-22 10:24:41,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6358 to 6356. [2020-12-22 10:24:41,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6356 states. [2020-12-22 10:24:41,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6356 states to 6356 states and 8499 transitions. [2020-12-22 10:24:41,443 INFO L78 Accepts]: Start accepts. Automaton has 6356 states and 8499 transitions. Word has length 106 [2020-12-22 10:24:41,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:24:41,443 INFO L481 AbstractCegarLoop]: Abstraction has 6356 states and 8499 transitions. [2020-12-22 10:24:41,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:24:41,443 INFO L276 IsEmpty]: Start isEmpty. Operand 6356 states and 8499 transitions. [2020-12-22 10:24:41,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 10:24:41,445 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:24:41,445 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:24:41,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 10:24:41,452 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:24:41,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:24:41,453 INFO L82 PathProgramCache]: Analyzing trace with hash 717259381, now seen corresponding path program 1 times [2020-12-22 10:24:41,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:24:41,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40353142] [2020-12-22 10:24:41,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:24:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:24:41,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:24:41,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40353142] [2020-12-22 10:24:41,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:24:41,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:24:41,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966961192] [2020-12-22 10:24:41,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:24:41,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:24:41,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:24:41,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:24:41,576 INFO L87 Difference]: Start difference. First operand 6356 states and 8499 transitions. Second operand 3 states. [2020-12-22 10:24:41,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:24:41,639 INFO L93 Difference]: Finished difference Result 6888 states and 9349 transitions. [2020-12-22 10:24:41,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:24:41,640 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-22 10:24:41,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:24:41,660 INFO L225 Difference]: With dead ends: 6888 [2020-12-22 10:24:41,660 INFO L226 Difference]: Without dead ends: 6610 [2020-12-22 10:24:41,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:24:41,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6610 states. [2020-12-22 10:24:41,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6610 to 6608. [2020-12-22 10:24:41,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6608 states. [2020-12-22 10:24:41,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6608 states to 6608 states and 8899 transitions. [2020-12-22 10:24:41,806 INFO L78 Accepts]: Start accepts. Automaton has 6608 states and 8899 transitions. Word has length 106 [2020-12-22 10:24:41,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:24:41,806 INFO L481 AbstractCegarLoop]: Abstraction has 6608 states and 8899 transitions. [2020-12-22 10:24:41,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:24:41,806 INFO L276 IsEmpty]: Start isEmpty. Operand 6608 states and 8899 transitions. [2020-12-22 10:24:41,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 10:24:41,808 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:24:41,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:24:41,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 10:24:41,808 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:24:41,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:24:41,809 INFO L82 PathProgramCache]: Analyzing trace with hash -28323349, now seen corresponding path program 1 times [2020-12-22 10:24:41,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:24:41,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219311841] [2020-12-22 10:24:41,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:24:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:24:41,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:24:41,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219311841] [2020-12-22 10:24:41,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:24:41,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:24:41,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732427671] [2020-12-22 10:24:41,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:24:41,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:24:41,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:24:41,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:24:41,922 INFO L87 Difference]: Start difference. First operand 6608 states and 8899 transitions. Second operand 3 states. [2020-12-22 10:24:41,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:24:41,989 INFO L93 Difference]: Finished difference Result 7620 states and 10509 transitions. [2020-12-22 10:24:41,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:24:41,990 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-22 10:24:41,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:24:42,014 INFO L225 Difference]: With dead ends: 7620 [2020-12-22 10:24:42,014 INFO L226 Difference]: Without dead ends: 7090 [2020-12-22 10:24:42,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:24:42,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7090 states. [2020-12-22 10:24:42,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7090 to 7088. [2020-12-22 10:24:42,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7088 states. [2020-12-22 10:24:42,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7088 states to 7088 states and 9655 transitions. [2020-12-22 10:24:42,177 INFO L78 Accepts]: Start accepts. Automaton has 7088 states and 9655 transitions. Word has length 106 [2020-12-22 10:24:42,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:24:42,177 INFO L481 AbstractCegarLoop]: Abstraction has 7088 states and 9655 transitions. [2020-12-22 10:24:42,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:24:42,177 INFO L276 IsEmpty]: Start isEmpty. Operand 7088 states and 9655 transitions. [2020-12-22 10:24:42,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 10:24:42,179 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:24:42,179 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:24:42,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 10:24:42,180 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:24:42,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:24:42,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1968354207, now seen corresponding path program 1 times [2020-12-22 10:24:42,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:24:42,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496204224] [2020-12-22 10:24:42,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:24:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:24:42,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:24:42,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496204224] [2020-12-22 10:24:42,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:24:42,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:24:42,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381892772] [2020-12-22 10:24:42,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:24:42,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:24:42,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:24:42,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:24:42,273 INFO L87 Difference]: Start difference. First operand 7088 states and 9655 transitions. Second operand 3 states. [2020-12-22 10:24:42,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:24:42,427 INFO L93 Difference]: Finished difference Result 9012 states and 12697 transitions. [2020-12-22 10:24:42,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:24:42,432 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-22 10:24:42,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:24:42,449 INFO L225 Difference]: With dead ends: 9012 [2020-12-22 10:24:42,449 INFO L226 Difference]: Without dead ends: 8002 [2020-12-22 10:24:42,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:24:42,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8002 states. [2020-12-22 10:24:42,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8002 to 8000. [2020-12-22 10:24:42,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8000 states. [2020-12-22 10:24:42,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8000 states to 8000 states and 11079 transitions. [2020-12-22 10:24:42,654 INFO L78 Accepts]: Start accepts. Automaton has 8000 states and 11079 transitions. Word has length 106 [2020-12-22 10:24:42,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:24:42,655 INFO L481 AbstractCegarLoop]: Abstraction has 8000 states and 11079 transitions. [2020-12-22 10:24:42,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:24:42,655 INFO L276 IsEmpty]: Start isEmpty. Operand 8000 states and 11079 transitions. [2020-12-22 10:24:42,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 10:24:42,656 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:24:42,657 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:24:42,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 10:24:42,657 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:24:42,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:24:42,658 INFO L82 PathProgramCache]: Analyzing trace with hash 732328407, now seen corresponding path program 1 times [2020-12-22 10:24:42,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:24:42,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633536901] [2020-12-22 10:24:42,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:24:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:24:42,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:24:42,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633536901] [2020-12-22 10:24:42,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:24:42,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:24:42,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127402079] [2020-12-22 10:24:42,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:24:42,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:24:42,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:24:42,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:24:42,760 INFO L87 Difference]: Start difference. First operand 8000 states and 11079 transitions. Second operand 3 states. [2020-12-22 10:24:42,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:24:42,909 INFO L93 Difference]: Finished difference Result 11652 states and 16809 transitions. [2020-12-22 10:24:42,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:24:42,910 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-22 10:24:42,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:24:42,932 INFO L225 Difference]: With dead ends: 11652 [2020-12-22 10:24:42,932 INFO L226 Difference]: Without dead ends: 9730 [2020-12-22 10:24:42,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:24:42,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9730 states. [2020-12-22 10:24:43,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9730 to 9728. [2020-12-22 10:24:43,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9728 states. [2020-12-22 10:24:43,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9728 states to 9728 states and 13751 transitions. [2020-12-22 10:24:43,202 INFO L78 Accepts]: Start accepts. Automaton has 9728 states and 13751 transitions. Word has length 106 [2020-12-22 10:24:43,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:24:43,202 INFO L481 AbstractCegarLoop]: Abstraction has 9728 states and 13751 transitions. [2020-12-22 10:24:43,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:24:43,203 INFO L276 IsEmpty]: Start isEmpty. Operand 9728 states and 13751 transitions. [2020-12-22 10:24:43,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 10:24:43,204 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:24:43,204 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:24:43,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 10:24:43,205 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:24:43,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:24:43,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1070121549, now seen corresponding path program 1 times [2020-12-22 10:24:43,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:24:43,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681080431] [2020-12-22 10:24:43,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:24:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:24:43,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:24:43,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681080431] [2020-12-22 10:24:43,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:24:43,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:24:43,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574583742] [2020-12-22 10:24:43,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:24:43,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:24:43,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:24:43,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:24:43,297 INFO L87 Difference]: Start difference. First operand 9728 states and 13751 transitions. Second operand 3 states. [2020-12-22 10:24:43,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:24:43,547 INFO L93 Difference]: Finished difference Result 16644 states and 24505 transitions. [2020-12-22 10:24:43,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:24:43,548 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-22 10:24:43,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:24:43,577 INFO L225 Difference]: With dead ends: 16644 [2020-12-22 10:24:43,578 INFO L226 Difference]: Without dead ends: 12994 [2020-12-22 10:24:43,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:24:43,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12994 states. [2020-12-22 10:24:43,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12994 to 12992. [2020-12-22 10:24:43,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12992 states. [2020-12-22 10:24:43,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12992 states to 12992 states and 18743 transitions. [2020-12-22 10:24:43,944 INFO L78 Accepts]: Start accepts. Automaton has 12992 states and 18743 transitions. Word has length 106 [2020-12-22 10:24:43,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:24:43,945 INFO L481 AbstractCegarLoop]: Abstraction has 12992 states and 18743 transitions. [2020-12-22 10:24:43,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:24:43,945 INFO L276 IsEmpty]: Start isEmpty. Operand 12992 states and 18743 transitions. [2020-12-22 10:24:43,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 10:24:43,946 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:24:43,946 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:24:43,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 10:24:43,947 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:24:43,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:24:43,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1478760321, now seen corresponding path program 1 times [2020-12-22 10:24:43,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:24:43,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742497368] [2020-12-22 10:24:43,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:24:43,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:24:44,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:24:44,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742497368] [2020-12-22 10:24:44,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:24:44,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 10:24:44,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682421163] [2020-12-22 10:24:44,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 10:24:44,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:24:44,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 10:24:44,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-12-22 10:24:44,152 INFO L87 Difference]: Start difference. First operand 12992 states and 18743 transitions. Second operand 10 states. [2020-12-22 10:24:48,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:24:48,145 INFO L93 Difference]: Finished difference Result 123616 states and 189767 transitions. [2020-12-22 10:24:48,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 10:24:48,146 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 106 [2020-12-22 10:24:48,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:24:48,485 INFO L225 Difference]: With dead ends: 123616 [2020-12-22 10:24:48,485 INFO L226 Difference]: Without dead ends: 116702 [2020-12-22 10:24:48,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2020-12-22 10:24:48,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116702 states. [2020-12-22 10:24:50,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116702 to 19904. [2020-12-22 10:24:50,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19904 states. [2020-12-22 10:24:50,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19904 states to 19904 states and 29175 transitions. [2020-12-22 10:24:50,771 INFO L78 Accepts]: Start accepts. Automaton has 19904 states and 29175 transitions. Word has length 106 [2020-12-22 10:24:50,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:24:50,772 INFO L481 AbstractCegarLoop]: Abstraction has 19904 states and 29175 transitions. [2020-12-22 10:24:50,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 10:24:50,772 INFO L276 IsEmpty]: Start isEmpty. Operand 19904 states and 29175 transitions. [2020-12-22 10:24:50,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 10:24:50,773 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:24:50,774 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:24:50,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 10:24:50,774 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:24:50,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:24:50,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1961193007, now seen corresponding path program 1 times [2020-12-22 10:24:50,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:24:50,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413001389] [2020-12-22 10:24:50,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:24:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:24:50,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:24:50,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413001389] [2020-12-22 10:24:50,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:24:50,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:24:50,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051213108] [2020-12-22 10:24:50,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:24:50,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:24:50,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:24:50,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:24:50,877 INFO L87 Difference]: Start difference. First operand 19904 states and 29175 transitions. Second operand 3 states. [2020-12-22 10:24:52,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:24:52,036 INFO L93 Difference]: Finished difference Result 46148 states and 68985 transitions. [2020-12-22 10:24:52,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:24:52,037 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-12-22 10:24:52,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:24:52,110 INFO L225 Difference]: With dead ends: 46148 [2020-12-22 10:24:52,110 INFO L226 Difference]: Without dead ends: 32322 [2020-12-22 10:24:52,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:24:52,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32322 states. [2020-12-22 10:24:53,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32322 to 32064. [2020-12-22 10:24:53,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32064 states. [2020-12-22 10:24:53,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32064 states to 32064 states and 46967 transitions. [2020-12-22 10:24:53,725 INFO L78 Accepts]: Start accepts. Automaton has 32064 states and 46967 transitions. Word has length 108 [2020-12-22 10:24:53,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:24:53,726 INFO L481 AbstractCegarLoop]: Abstraction has 32064 states and 46967 transitions. [2020-12-22 10:24:53,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:24:53,726 INFO L276 IsEmpty]: Start isEmpty. Operand 32064 states and 46967 transitions. [2020-12-22 10:24:53,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 10:24:53,728 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:24:53,728 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:24:53,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 10:24:53,728 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:24:53,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:24:53,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1894699495, now seen corresponding path program 1 times [2020-12-22 10:24:53,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:24:53,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761110110] [2020-12-22 10:24:53,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:24:53,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:24:54,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:24:54,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761110110] [2020-12-22 10:24:54,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:24:54,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 10:24:54,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807839150] [2020-12-22 10:24:54,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 10:24:54,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:24:54,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 10:24:54,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-22 10:24:54,250 INFO L87 Difference]: Start difference. First operand 32064 states and 46967 transitions. Second operand 10 states. [2020-12-22 10:24:54,789 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2020-12-22 10:24:56,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:24:56,332 INFO L93 Difference]: Finished difference Result 58052 states and 85881 transitions. [2020-12-22 10:24:56,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:24:56,333 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 108 [2020-12-22 10:24:56,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:24:56,384 INFO L225 Difference]: With dead ends: 58052 [2020-12-22 10:24:56,384 INFO L226 Difference]: Without dead ends: 32066 [2020-12-22 10:24:56,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2020-12-22 10:24:56,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32066 states. [2020-12-22 10:24:57,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32066 to 32064. [2020-12-22 10:24:57,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32064 states. [2020-12-22 10:24:58,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32064 states to 32064 states and 46711 transitions. [2020-12-22 10:24:58,027 INFO L78 Accepts]: Start accepts. Automaton has 32064 states and 46711 transitions. Word has length 108 [2020-12-22 10:24:58,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:24:58,028 INFO L481 AbstractCegarLoop]: Abstraction has 32064 states and 46711 transitions. [2020-12-22 10:24:58,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 10:24:58,028 INFO L276 IsEmpty]: Start isEmpty. Operand 32064 states and 46711 transitions. [2020-12-22 10:24:58,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-22 10:24:58,030 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:24:58,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:24:58,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 10:24:58,030 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:24:58,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:24:58,031 INFO L82 PathProgramCache]: Analyzing trace with hash 979135041, now seen corresponding path program 1 times [2020-12-22 10:24:58,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:24:58,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710242113] [2020-12-22 10:24:58,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:24:58,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:24:58,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:24:58,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710242113] [2020-12-22 10:24:58,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:24:58,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 10:24:58,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446177950] [2020-12-22 10:24:58,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 10:24:58,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:24:58,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 10:24:58,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 10:24:58,189 INFO L87 Difference]: Start difference. First operand 32064 states and 46711 transitions. Second operand 6 states. [2020-12-22 10:25:00,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:25:00,225 INFO L93 Difference]: Finished difference Result 58050 states and 85368 transitions. [2020-12-22 10:25:00,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 10:25:00,226 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2020-12-22 10:25:00,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:25:00,256 INFO L225 Difference]: With dead ends: 58050 [2020-12-22 10:25:00,256 INFO L226 Difference]: Without dead ends: 32064 [2020-12-22 10:25:00,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:25:00,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32064 states. [2020-12-22 10:25:01,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32064 to 32064. [2020-12-22 10:25:01,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32064 states. [2020-12-22 10:25:02,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32064 states to 32064 states and 46455 transitions. [2020-12-22 10:25:02,000 INFO L78 Accepts]: Start accepts. Automaton has 32064 states and 46455 transitions. Word has length 109 [2020-12-22 10:25:02,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:25:02,001 INFO L481 AbstractCegarLoop]: Abstraction has 32064 states and 46455 transitions. [2020-12-22 10:25:02,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 10:25:02,001 INFO L276 IsEmpty]: Start isEmpty. Operand 32064 states and 46455 transitions. [2020-12-22 10:25:02,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-22 10:25:02,004 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:25:02,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:25:02,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 10:25:02,005 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:25:02,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:25:02,005 INFO L82 PathProgramCache]: Analyzing trace with hash 278070463, now seen corresponding path program 1 times [2020-12-22 10:25:02,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:25:02,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853944622] [2020-12-22 10:25:02,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:25:02,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:25:02,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:25:02,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853944622] [2020-12-22 10:25:02,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:25:02,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:25:02,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381609138] [2020-12-22 10:25:02,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:25:02,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:25:02,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:25:02,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:25:02,167 INFO L87 Difference]: Start difference. First operand 32064 states and 46455 transitions. Second operand 8 states. [2020-12-22 10:25:04,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:25:04,899 INFO L93 Difference]: Finished difference Result 51434 states and 74668 transitions. [2020-12-22 10:25:04,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:25:04,900 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 109 [2020-12-22 10:25:04,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:25:04,955 INFO L225 Difference]: With dead ends: 51434 [2020-12-22 10:25:04,955 INFO L226 Difference]: Without dead ends: 51432 [2020-12-22 10:25:04,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 10:25:04,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51432 states. [2020-12-22 10:25:07,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51432 to 32832. [2020-12-22 10:25:07,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32832 states. [2020-12-22 10:25:07,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32832 states to 32832 states and 47095 transitions. [2020-12-22 10:25:07,066 INFO L78 Accepts]: Start accepts. Automaton has 32832 states and 47095 transitions. Word has length 109 [2020-12-22 10:25:07,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:25:07,067 INFO L481 AbstractCegarLoop]: Abstraction has 32832 states and 47095 transitions. [2020-12-22 10:25:07,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:25:07,067 INFO L276 IsEmpty]: Start isEmpty. Operand 32832 states and 47095 transitions. [2020-12-22 10:25:07,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-12-22 10:25:07,069 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:25:07,069 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:25:07,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 10:25:07,069 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:25:07,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:25:07,070 INFO L82 PathProgramCache]: Analyzing trace with hash 171324818, now seen corresponding path program 1 times [2020-12-22 10:25:07,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:25:07,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627817131] [2020-12-22 10:25:07,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:25:07,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:25:07,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:25:07,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627817131] [2020-12-22 10:25:07,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:25:07,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:25:07,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562847804] [2020-12-22 10:25:07,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:25:07,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:25:07,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:25:07,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:25:07,147 INFO L87 Difference]: Start difference. First operand 32832 states and 47095 transitions. Second operand 3 states. [2020-12-22 10:25:09,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:25:09,715 INFO L93 Difference]: Finished difference Result 59975 states and 87037 transitions. [2020-12-22 10:25:09,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:25:09,716 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 110 [2020-12-22 10:25:09,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:25:09,764 INFO L225 Difference]: With dead ends: 59975 [2020-12-22 10:25:09,765 INFO L226 Difference]: Without dead ends: 45380 [2020-12-22 10:25:09,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:25:09,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45380 states. [2020-12-22 10:25:12,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45380 to 45378. [2020-12-22 10:25:12,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45378 states. [2020-12-22 10:25:12,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45378 states to 45378 states and 65145 transitions. [2020-12-22 10:25:12,594 INFO L78 Accepts]: Start accepts. Automaton has 45378 states and 65145 transitions. Word has length 110 [2020-12-22 10:25:12,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:25:12,595 INFO L481 AbstractCegarLoop]: Abstraction has 45378 states and 65145 transitions. [2020-12-22 10:25:12,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:25:12,595 INFO L276 IsEmpty]: Start isEmpty. Operand 45378 states and 65145 transitions. [2020-12-22 10:25:12,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-12-22 10:25:12,598 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:25:12,598 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:25:12,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 10:25:12,599 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:25:12,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:25:12,599 INFO L82 PathProgramCache]: Analyzing trace with hash -2114527502, now seen corresponding path program 1 times [2020-12-22 10:25:12,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:25:12,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233963971] [2020-12-22 10:25:12,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:25:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:25:12,713 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:25:12,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233963971] [2020-12-22 10:25:12,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:25:12,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 10:25:12,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600535459] [2020-12-22 10:25:12,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:25:12,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:25:12,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:25:12,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:25:12,716 INFO L87 Difference]: Start difference. First operand 45378 states and 65145 transitions. Second operand 3 states. [2020-12-22 10:25:21,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:25:21,354 INFO L93 Difference]: Finished difference Result 57396 states and 81114 transitions. [2020-12-22 10:25:21,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:25:21,355 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 129 [2020-12-22 10:25:21,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:25:21,404 INFO L225 Difference]: With dead ends: 57396 [2020-12-22 10:25:21,404 INFO L226 Difference]: Without dead ends: 51386 [2020-12-22 10:25:21,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:25:21,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51386 states. [2020-12-22 10:25:24,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51386 to 50635. [2020-12-22 10:25:24,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50635 states. [2020-12-22 10:25:24,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50635 states to 50635 states and 70992 transitions. [2020-12-22 10:25:24,361 INFO L78 Accepts]: Start accepts. Automaton has 50635 states and 70992 transitions. Word has length 129 [2020-12-22 10:25:24,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:25:24,362 INFO L481 AbstractCegarLoop]: Abstraction has 50635 states and 70992 transitions. [2020-12-22 10:25:24,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:25:24,362 INFO L276 IsEmpty]: Start isEmpty. Operand 50635 states and 70992 transitions. [2020-12-22 10:25:24,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 10:25:24,382 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:25:24,383 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:25:24,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 10:25:24,383 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:25:24,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:25:24,384 INFO L82 PathProgramCache]: Analyzing trace with hash 45078639, now seen corresponding path program 1 times [2020-12-22 10:25:24,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:25:24,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892259566] [2020-12-22 10:25:24,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:25:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:25:24,605 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-22 10:25:24,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892259566] [2020-12-22 10:25:24,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:25:24,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 10:25:24,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588448835] [2020-12-22 10:25:24,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 10:25:24,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:25:24,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 10:25:24,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 10:25:24,608 INFO L87 Difference]: Start difference. First operand 50635 states and 70992 transitions. Second operand 10 states. [2020-12-22 10:25:44,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:25:44,311 INFO L93 Difference]: Finished difference Result 372573 states and 538329 transitions. [2020-12-22 10:25:44,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:25:44,312 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 148 [2020-12-22 10:25:44,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:25:44,842 INFO L225 Difference]: With dead ends: 372573 [2020-12-22 10:25:44,842 INFO L226 Difference]: Without dead ends: 333275 [2020-12-22 10:25:44,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-12-22 10:25:45,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333275 states. [2020-12-22 10:25:52,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333275 to 89931. [2020-12-22 10:25:52,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89931 states. [2020-12-22 10:25:52,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89931 states to 89931 states and 127696 transitions. [2020-12-22 10:25:52,853 INFO L78 Accepts]: Start accepts. Automaton has 89931 states and 127696 transitions. Word has length 148 [2020-12-22 10:25:52,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:25:52,853 INFO L481 AbstractCegarLoop]: Abstraction has 89931 states and 127696 transitions. [2020-12-22 10:25:52,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 10:25:52,853 INFO L276 IsEmpty]: Start isEmpty. Operand 89931 states and 127696 transitions. [2020-12-22 10:25:52,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 10:25:52,872 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:25:52,873 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:25:52,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 10:25:52,873 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:25:52,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:25:52,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1723704177, now seen corresponding path program 1 times [2020-12-22 10:25:52,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:25:52,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967368263] [2020-12-22 10:25:52,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:25:52,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:25:53,129 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-22 10:25:53,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967368263] [2020-12-22 10:25:53,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:25:53,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 10:25:53,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839246653] [2020-12-22 10:25:53,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 10:25:53,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:25:53,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 10:25:53,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 10:25:53,135 INFO L87 Difference]: Start difference. First operand 89931 states and 127696 transitions. Second operand 10 states. [2020-12-22 10:26:18,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:26:18,628 INFO L93 Difference]: Finished difference Result 411869 states and 595033 transitions. [2020-12-22 10:26:18,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:26:18,629 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 148 [2020-12-22 10:26:18,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:26:19,215 INFO L225 Difference]: With dead ends: 411869 [2020-12-22 10:26:19,216 INFO L226 Difference]: Without dead ends: 372571 [2020-12-22 10:26:19,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-12-22 10:26:19,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372571 states. [2020-12-22 10:26:32,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372571 to 148939. [2020-12-22 10:26:32,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148939 states. [2020-12-22 10:26:32,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148939 states to 148939 states and 212432 transitions. [2020-12-22 10:26:32,962 INFO L78 Accepts]: Start accepts. Automaton has 148939 states and 212432 transitions. Word has length 148 [2020-12-22 10:26:32,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:26:32,962 INFO L481 AbstractCegarLoop]: Abstraction has 148939 states and 212432 transitions. [2020-12-22 10:26:32,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 10:26:32,962 INFO L276 IsEmpty]: Start isEmpty. Operand 148939 states and 212432 transitions. [2020-12-22 10:26:32,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 10:26:32,988 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:26:32,988 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:26:32,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 10:26:32,988 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:26:32,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:26:32,991 INFO L82 PathProgramCache]: Analyzing trace with hash -592064337, now seen corresponding path program 1 times [2020-12-22 10:26:32,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:26:32,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791333937] [2020-12-22 10:26:32,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:26:33,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:26:33,238 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 10:26:33,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791333937] [2020-12-22 10:26:33,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:26:33,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 10:26:33,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485000240] [2020-12-22 10:26:33,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 10:26:33,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:26:33,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 10:26:33,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 10:26:33,240 INFO L87 Difference]: Start difference. First operand 148939 states and 212432 transitions. Second operand 10 states. [2020-12-22 10:27:03,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:27:03,727 INFO L93 Difference]: Finished difference Result 451165 states and 651737 transitions. [2020-12-22 10:27:03,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:27:03,728 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 148 [2020-12-22 10:27:03,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:27:04,536 INFO L225 Difference]: With dead ends: 451165 [2020-12-22 10:27:04,536 INFO L226 Difference]: Without dead ends: 411867 [2020-12-22 10:27:04,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-12-22 10:27:04,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411867 states. [2020-12-22 10:27:21,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411867 to 188235. [2020-12-22 10:27:21,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188235 states. [2020-12-22 10:27:21,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188235 states to 188235 states and 269136 transitions. [2020-12-22 10:27:21,998 INFO L78 Accepts]: Start accepts. Automaton has 188235 states and 269136 transitions. Word has length 148 [2020-12-22 10:27:21,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:27:21,999 INFO L481 AbstractCegarLoop]: Abstraction has 188235 states and 269136 transitions. [2020-12-22 10:27:21,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 10:27:21,999 INFO L276 IsEmpty]: Start isEmpty. Operand 188235 states and 269136 transitions. [2020-12-22 10:27:22,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 10:27:22,018 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:27:22,019 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:27:22,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 10:27:22,019 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:27:22,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:27:22,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1827523377, now seen corresponding path program 1 times [2020-12-22 10:27:22,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:27:22,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494626038] [2020-12-22 10:27:22,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:27:22,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:27:22,233 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 10:27:22,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494626038] [2020-12-22 10:27:22,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:27:22,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 10:27:22,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403683367] [2020-12-22 10:27:22,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 10:27:22,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:27:22,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 10:27:22,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 10:27:22,235 INFO L87 Difference]: Start difference. First operand 188235 states and 269136 transitions. Second operand 10 states.