/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 07:30:16,615 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 07:30:16,620 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 07:30:16,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 07:30:16,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 07:30:16,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 07:30:16,679 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 07:30:16,682 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 07:30:16,684 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 07:30:16,686 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 07:30:16,687 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 07:30:16,689 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 07:30:16,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 07:30:16,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 07:30:16,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 07:30:16,694 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 07:30:16,695 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 07:30:16,696 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 07:30:16,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 07:30:16,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 07:30:16,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 07:30:16,708 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 07:30:16,709 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 07:30:16,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 07:30:16,714 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 07:30:16,718 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 07:30:16,719 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 07:30:16,720 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 07:30:16,721 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 07:30:16,723 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 07:30:16,723 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 07:30:16,724 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 07:30:16,725 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 07:30:16,725 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 07:30:16,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 07:30:16,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 07:30:16,729 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 07:30:16,763 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 07:30:16,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 07:30:16,765 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 07:30:16,766 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 07:30:16,766 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 07:30:16,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 07:30:16,767 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 07:30:16,767 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 07:30:16,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 07:30:16,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 07:30:16,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 07:30:16,769 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 07:30:16,769 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 07:30:16,769 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 07:30:16,770 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 07:30:16,771 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 07:30:16,771 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 07:30:16,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:30:16,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 07:30:16,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 07:30:16,772 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 07:30:16,772 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 07:30:16,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 07:30:16,773 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 07:30:16,773 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 07:30:16,773 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 07:30:17,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 07:30:17,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 07:30:17,287 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 07:30:17,289 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 07:30:17,290 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 07:30:17,291 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c [2020-12-22 07:30:17,381 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4b9bc872/fa464701f93d428898a381831ed6994a/FLAG28d51051d [2020-12-22 07:30:18,145 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 07:30:18,146 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c [2020-12-22 07:30:18,163 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4b9bc872/fa464701f93d428898a381831ed6994a/FLAG28d51051d [2020-12-22 07:30:18,397 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4b9bc872/fa464701f93d428898a381831ed6994a [2020-12-22 07:30:18,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 07:30:18,403 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 07:30:18,408 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 07:30:18,409 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 07:30:18,413 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 07:30:18,414 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:30:18" (1/1) ... [2020-12-22 07:30:18,416 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11f0f878 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:30:18, skipping insertion in model container [2020-12-22 07:30:18,417 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:30:18" (1/1) ... [2020-12-22 07:30:18,426 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 07:30:18,493 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 07:30:18,804 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c[16824,16837] [2020-12-22 07:30:18,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:30:18,837 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 07:30:18,998 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c[16824,16837] [2020-12-22 07:30:19,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:30:19,048 INFO L208 MainTranslator]: Completed translation [2020-12-22 07:30:19,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:30:19 WrapperNode [2020-12-22 07:30:19,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 07:30:19,055 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 07:30:19,055 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 07:30:19,055 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 07:30:19,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:30:19" (1/1) ... [2020-12-22 07:30:19,103 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:30:19" (1/1) ... [2020-12-22 07:30:19,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 07:30:19,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 07:30:19,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 07:30:19,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 07:30:19,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:30:19" (1/1) ... [2020-12-22 07:30:19,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:30:19" (1/1) ... [2020-12-22 07:30:19,216 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:30:19" (1/1) ... [2020-12-22 07:30:19,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:30:19" (1/1) ... [2020-12-22 07:30:19,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:30:19" (1/1) ... [2020-12-22 07:30:19,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:30:19" (1/1) ... [2020-12-22 07:30:19,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:30:19" (1/1) ... [2020-12-22 07:30:19,252 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 07:30:19,253 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 07:30:19,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 07:30:19,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 07:30:19,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:30:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:30:19,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 07:30:19,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 07:30:19,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 07:30:19,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 07:30:20,400 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 07:30:20,400 INFO L299 CfgBuilder]: Removed 25 assume(true) statements. [2020-12-22 07:30:20,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:30:20 BoogieIcfgContainer [2020-12-22 07:30:20,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 07:30:20,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 07:30:20,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 07:30:20,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 07:30:20,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:30:18" (1/3) ... [2020-12-22 07:30:20,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@777d8e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:30:20, skipping insertion in model container [2020-12-22 07:30:20,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:30:19" (2/3) ... [2020-12-22 07:30:20,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@777d8e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:30:20, skipping insertion in model container [2020-12-22 07:30:20,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:30:20" (3/3) ... [2020-12-22 07:30:20,421 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c [2020-12-22 07:30:20,433 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 07:30:20,439 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 07:30:20,461 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 07:30:20,492 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 07:30:20,492 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 07:30:20,492 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 07:30:20,492 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 07:30:20,492 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 07:30:20,493 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 07:30:20,493 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 07:30:20,493 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 07:30:20,517 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states. [2020-12-22 07:30:20,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 07:30:20,529 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:30:20,530 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] [2020-12-22 07:30:20,531 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:30:20,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:30:20,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1765981308, now seen corresponding path program 1 times [2020-12-22 07:30:20,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:30:20,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686237475] [2020-12-22 07:30:20,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:30:20,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:30:20,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:30:20,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686237475] [2020-12-22 07:30:20,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:30:20,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:30:20,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911073916] [2020-12-22 07:30:20,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:30:20,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:30:20,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:30:20,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:30:20,997 INFO L87 Difference]: Start difference. First operand 142 states. Second operand 5 states. [2020-12-22 07:30:21,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:30:21,161 INFO L93 Difference]: Finished difference Result 241 states and 398 transitions. [2020-12-22 07:30:21,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:30:21,163 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-12-22 07:30:21,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:30:21,177 INFO L225 Difference]: With dead ends: 241 [2020-12-22 07:30:21,178 INFO L226 Difference]: Without dead ends: 138 [2020-12-22 07:30:21,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:30:21,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-12-22 07:30:21,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-12-22 07:30:21,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-12-22 07:30:21,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 193 transitions. [2020-12-22 07:30:21,238 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 193 transitions. Word has length 37 [2020-12-22 07:30:21,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:30:21,239 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 193 transitions. [2020-12-22 07:30:21,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:30:21,239 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 193 transitions. [2020-12-22 07:30:21,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 07:30:21,243 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:30:21,243 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] [2020-12-22 07:30:21,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 07:30:21,244 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:30:21,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:30:21,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1408949682, now seen corresponding path program 1 times [2020-12-22 07:30:21,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:30:21,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138282299] [2020-12-22 07:30:21,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:30:21,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:30:21,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:30:21,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138282299] [2020-12-22 07:30:21,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:30:21,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:30:21,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905104693] [2020-12-22 07:30:21,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:30:21,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:30:21,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:30:21,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:30:21,576 INFO L87 Difference]: Start difference. First operand 138 states and 193 transitions. Second operand 3 states. [2020-12-22 07:30:21,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:30:21,633 INFO L93 Difference]: Finished difference Result 308 states and 465 transitions. [2020-12-22 07:30:21,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:30:21,634 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 07:30:21,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:30:21,637 INFO L225 Difference]: With dead ends: 308 [2020-12-22 07:30:21,637 INFO L226 Difference]: Without dead ends: 217 [2020-12-22 07:30:21,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:30:21,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-12-22 07:30:21,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 215. [2020-12-22 07:30:21,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-12-22 07:30:21,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 317 transitions. [2020-12-22 07:30:21,663 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 317 transitions. Word has length 77 [2020-12-22 07:30:21,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:30:21,663 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 317 transitions. [2020-12-22 07:30:21,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:30:21,664 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 317 transitions. [2020-12-22 07:30:21,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 07:30:21,666 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:30:21,667 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] [2020-12-22 07:30:21,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 07:30:21,667 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:30:21,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:30:21,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1762847602, now seen corresponding path program 1 times [2020-12-22 07:30:21,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:30:21,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328925716] [2020-12-22 07:30:21,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:30:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:30:21,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:30:21,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328925716] [2020-12-22 07:30:21,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:30:21,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:30:21,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563683065] [2020-12-22 07:30:21,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:30:21,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:30:21,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:30:21,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:30:21,811 INFO L87 Difference]: Start difference. First operand 215 states and 317 transitions. Second operand 3 states. [2020-12-22 07:30:21,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:30:21,843 INFO L93 Difference]: Finished difference Result 527 states and 817 transitions. [2020-12-22 07:30:21,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:30:21,844 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-12-22 07:30:21,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:30:21,848 INFO L225 Difference]: With dead ends: 527 [2020-12-22 07:30:21,848 INFO L226 Difference]: Without dead ends: 359 [2020-12-22 07:30:21,850 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:30:21,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-12-22 07:30:21,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 357. [2020-12-22 07:30:21,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-12-22 07:30:21,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 544 transitions. [2020-12-22 07:30:21,881 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 544 transitions. Word has length 78 [2020-12-22 07:30:21,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:30:21,882 INFO L481 AbstractCegarLoop]: Abstraction has 357 states and 544 transitions. [2020-12-22 07:30:21,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:30:21,882 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 544 transitions. [2020-12-22 07:30:21,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 07:30:21,885 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:30:21,885 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] [2020-12-22 07:30:21,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 07:30:21,885 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:30:21,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:30:21,886 INFO L82 PathProgramCache]: Analyzing trace with hash -863425826, now seen corresponding path program 1 times [2020-12-22 07:30:21,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:30:21,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879661788] [2020-12-22 07:30:21,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:30:21,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:30:22,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:30:22,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879661788] [2020-12-22 07:30:22,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:30:22,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:30:22,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499548918] [2020-12-22 07:30:22,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:30:22,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:30:22,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:30:22,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:30:22,037 INFO L87 Difference]: Start difference. First operand 357 states and 544 transitions. Second operand 3 states. [2020-12-22 07:30:22,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:30:22,090 INFO L93 Difference]: Finished difference Result 929 states and 1458 transitions. [2020-12-22 07:30:22,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:30:22,093 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-22 07:30:22,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:30:22,097 INFO L225 Difference]: With dead ends: 929 [2020-12-22 07:30:22,098 INFO L226 Difference]: Without dead ends: 619 [2020-12-22 07:30:22,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:30:22,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2020-12-22 07:30:22,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 617. [2020-12-22 07:30:22,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-12-22 07:30:22,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 956 transitions. [2020-12-22 07:30:22,136 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 956 transitions. Word has length 79 [2020-12-22 07:30:22,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:30:22,137 INFO L481 AbstractCegarLoop]: Abstraction has 617 states and 956 transitions. [2020-12-22 07:30:22,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:30:22,137 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 956 transitions. [2020-12-22 07:30:22,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 07:30:22,139 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:30:22,139 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] [2020-12-22 07:30:22,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 07:30:22,140 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:30:22,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:30:22,141 INFO L82 PathProgramCache]: Analyzing trace with hash 2005690142, now seen corresponding path program 1 times [2020-12-22 07:30:22,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:30:22,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99766412] [2020-12-22 07:30:22,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:30:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:30:22,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:30:22,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99766412] [2020-12-22 07:30:22,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:30:22,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:30:22,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708121145] [2020-12-22 07:30:22,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:30:22,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:30:22,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:30:22,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:30:22,260 INFO L87 Difference]: Start difference. First operand 617 states and 956 transitions. Second operand 3 states. [2020-12-22 07:30:22,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:30:22,342 INFO L93 Difference]: Finished difference Result 1661 states and 2614 transitions. [2020-12-22 07:30:22,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:30:22,343 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-22 07:30:22,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:30:22,350 INFO L225 Difference]: With dead ends: 1661 [2020-12-22 07:30:22,350 INFO L226 Difference]: Without dead ends: 1091 [2020-12-22 07:30:22,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:30:22,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2020-12-22 07:30:22,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1089. [2020-12-22 07:30:22,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1089 states. [2020-12-22 07:30:22,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 1696 transitions. [2020-12-22 07:30:22,393 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 1696 transitions. Word has length 80 [2020-12-22 07:30:22,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:30:22,394 INFO L481 AbstractCegarLoop]: Abstraction has 1089 states and 1696 transitions. [2020-12-22 07:30:22,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:30:22,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 1696 transitions. [2020-12-22 07:30:22,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 07:30:22,396 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:30:22,396 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] [2020-12-22 07:30:22,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 07:30:22,397 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:30:22,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:30:22,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1850213230, now seen corresponding path program 1 times [2020-12-22 07:30:22,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:30:22,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807909661] [2020-12-22 07:30:22,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:30:22,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:30:22,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:30:22,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807909661] [2020-12-22 07:30:22,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:30:22,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:30:22,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695835228] [2020-12-22 07:30:22,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:30:22,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:30:22,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:30:22,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:30:22,498 INFO L87 Difference]: Start difference. First operand 1089 states and 1696 transitions. Second operand 3 states. [2020-12-22 07:30:22,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:30:22,558 INFO L93 Difference]: Finished difference Result 2981 states and 4674 transitions. [2020-12-22 07:30:22,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:30:22,559 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-12-22 07:30:22,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:30:22,570 INFO L225 Difference]: With dead ends: 2981 [2020-12-22 07:30:22,570 INFO L226 Difference]: Without dead ends: 1939 [2020-12-22 07:30:22,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:30:22,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1939 states. [2020-12-22 07:30:22,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1939 to 1937. [2020-12-22 07:30:22,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1937 states. [2020-12-22 07:30:22,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1937 states to 1937 states and 3008 transitions. [2020-12-22 07:30:22,682 INFO L78 Accepts]: Start accepts. Automaton has 1937 states and 3008 transitions. Word has length 81 [2020-12-22 07:30:22,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:30:22,684 INFO L481 AbstractCegarLoop]: Abstraction has 1937 states and 3008 transitions. [2020-12-22 07:30:22,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:30:22,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1937 states and 3008 transitions. [2020-12-22 07:30:22,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 07:30:22,690 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:30:22,690 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] [2020-12-22 07:30:22,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 07:30:22,690 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:30:22,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:30:22,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1094060462, now seen corresponding path program 1 times [2020-12-22 07:30:22,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:30:22,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863527623] [2020-12-22 07:30:22,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:30:22,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:30:22,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:30:22,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863527623] [2020-12-22 07:30:22,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:30:22,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 07:30:22,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117079867] [2020-12-22 07:30:22,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 07:30:22,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:30:22,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 07:30:22,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:30:22,987 INFO L87 Difference]: Start difference. First operand 1937 states and 3008 transitions. Second operand 8 states. [2020-12-22 07:30:23,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:30:23,608 INFO L93 Difference]: Finished difference Result 12077 states and 18694 transitions. [2020-12-22 07:30:23,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 07:30:23,609 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 82 [2020-12-22 07:30:23,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:30:23,697 INFO L225 Difference]: With dead ends: 12077 [2020-12-22 07:30:23,697 INFO L226 Difference]: Without dead ends: 10187 [2020-12-22 07:30:23,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:30:23,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10187 states. [2020-12-22 07:30:24,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10187 to 10177. [2020-12-22 07:30:24,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10177 states. [2020-12-22 07:30:24,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10177 states to 10177 states and 15696 transitions. [2020-12-22 07:30:24,305 INFO L78 Accepts]: Start accepts. Automaton has 10177 states and 15696 transitions. Word has length 82 [2020-12-22 07:30:24,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:30:24,306 INFO L481 AbstractCegarLoop]: Abstraction has 10177 states and 15696 transitions. [2020-12-22 07:30:24,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 07:30:24,306 INFO L276 IsEmpty]: Start isEmpty. Operand 10177 states and 15696 transitions. [2020-12-22 07:30:24,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 07:30:24,308 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:30:24,308 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] [2020-12-22 07:30:24,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 07:30:24,309 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:30:24,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:30:24,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1417912184, now seen corresponding path program 1 times [2020-12-22 07:30:24,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:30:24,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025325888] [2020-12-22 07:30:24,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:30:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:30:24,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:30:24,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025325888] [2020-12-22 07:30:24,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:30:24,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:30:24,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112638435] [2020-12-22 07:30:24,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:30:24,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:30:24,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:30:24,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:30:24,406 INFO L87 Difference]: Start difference. First operand 10177 states and 15696 transitions. Second operand 3 states. [2020-12-22 07:30:25,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:30:25,162 INFO L93 Difference]: Finished difference Result 28709 states and 44114 transitions. [2020-12-22 07:30:25,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:30:25,162 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-12-22 07:30:25,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:30:25,261 INFO L225 Difference]: With dead ends: 28709 [2020-12-22 07:30:25,261 INFO L226 Difference]: Without dead ends: 18579 [2020-12-22 07:30:25,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:30:25,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18579 states. [2020-12-22 07:30:26,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18579 to 18577. [2020-12-22 07:30:26,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18577 states. [2020-12-22 07:30:26,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18577 states to 18577 states and 28272 transitions. [2020-12-22 07:30:26,265 INFO L78 Accepts]: Start accepts. Automaton has 18577 states and 28272 transitions. Word has length 82 [2020-12-22 07:30:26,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:30:26,266 INFO L481 AbstractCegarLoop]: Abstraction has 18577 states and 28272 transitions. [2020-12-22 07:30:26,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:30:26,266 INFO L276 IsEmpty]: Start isEmpty. Operand 18577 states and 28272 transitions. [2020-12-22 07:30:26,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 07:30:26,268 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:30:26,268 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] [2020-12-22 07:30:26,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 07:30:26,268 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:30:26,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:30:26,269 INFO L82 PathProgramCache]: Analyzing trace with hash -867446125, now seen corresponding path program 1 times [2020-12-22 07:30:26,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:30:26,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385303085] [2020-12-22 07:30:26,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:30:26,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:30:26,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:30:26,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385303085] [2020-12-22 07:30:26,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:30:26,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 07:30:26,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770447060] [2020-12-22 07:30:26,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 07:30:26,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:30:26,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 07:30:26,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:30:26,505 INFO L87 Difference]: Start difference. First operand 18577 states and 28272 transitions. Second operand 8 states. [2020-12-22 07:30:29,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:30:29,589 INFO L93 Difference]: Finished difference Result 103967 states and 158647 transitions. [2020-12-22 07:30:29,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 07:30:29,589 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2020-12-22 07:30:29,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:30:29,852 INFO L225 Difference]: With dead ends: 103967 [2020-12-22 07:30:29,853 INFO L226 Difference]: Without dead ends: 85437 [2020-12-22 07:30:29,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-22 07:30:30,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85437 states. [2020-12-22 07:30:32,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85437 to 37105. [2020-12-22 07:30:32,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37105 states. [2020-12-22 07:30:32,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37105 states to 37105 states and 55728 transitions. [2020-12-22 07:30:32,873 INFO L78 Accepts]: Start accepts. Automaton has 37105 states and 55728 transitions. Word has length 83 [2020-12-22 07:30:32,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:30:32,874 INFO L481 AbstractCegarLoop]: Abstraction has 37105 states and 55728 transitions. [2020-12-22 07:30:32,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 07:30:32,874 INFO L276 IsEmpty]: Start isEmpty. Operand 37105 states and 55728 transitions. [2020-12-22 07:30:32,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 07:30:32,875 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:30:32,876 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] [2020-12-22 07:30:32,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 07:30:32,876 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:30:32,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:30:32,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1504349213, now seen corresponding path program 1 times [2020-12-22 07:30:32,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:30:32,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386567811] [2020-12-22 07:30:32,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:30:32,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:30:33,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:30:33,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386567811] [2020-12-22 07:30:33,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:30:33,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 07:30:33,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816760043] [2020-12-22 07:30:33,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 07:30:33,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:30:33,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 07:30:33,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:30:33,007 INFO L87 Difference]: Start difference. First operand 37105 states and 55728 transitions. Second operand 8 states. [2020-12-22 07:30:36,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:30:36,592 INFO L93 Difference]: Finished difference Result 77235 states and 114481 transitions. [2020-12-22 07:30:36,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:30:36,593 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-12-22 07:30:36,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:30:36,763 INFO L225 Difference]: With dead ends: 77235 [2020-12-22 07:30:36,763 INFO L226 Difference]: Without dead ends: 77233 [2020-12-22 07:30:36,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 07:30:36,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77233 states. [2020-12-22 07:30:39,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77233 to 39409. [2020-12-22 07:30:39,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39409 states. [2020-12-22 07:30:39,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39409 states to 39409 states and 58032 transitions. [2020-12-22 07:30:39,120 INFO L78 Accepts]: Start accepts. Automaton has 39409 states and 58032 transitions. Word has length 84 [2020-12-22 07:30:39,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:30:39,120 INFO L481 AbstractCegarLoop]: Abstraction has 39409 states and 58032 transitions. [2020-12-22 07:30:39,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 07:30:39,121 INFO L276 IsEmpty]: Start isEmpty. Operand 39409 states and 58032 transitions. [2020-12-22 07:30:39,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 07:30:39,122 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:30:39,122 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] [2020-12-22 07:30:39,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 07:30:39,123 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:30:39,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:30:39,124 INFO L82 PathProgramCache]: Analyzing trace with hash 662393451, now seen corresponding path program 1 times [2020-12-22 07:30:39,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:30:39,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056177659] [2020-12-22 07:30:39,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:30:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:30:39,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:30:39,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056177659] [2020-12-22 07:30:39,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:30:39,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:30:39,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582439330] [2020-12-22 07:30:39,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:30:39,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:30:39,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:30:39,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:30:39,191 INFO L87 Difference]: Start difference. First operand 39409 states and 58032 transitions. Second operand 3 states. [2020-12-22 07:30:41,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:30:41,535 INFO L93 Difference]: Finished difference Result 95831 states and 141140 transitions. [2020-12-22 07:30:41,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:30:41,536 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-12-22 07:30:41,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:30:41,652 INFO L225 Difference]: With dead ends: 95831 [2020-12-22 07:30:41,652 INFO L226 Difference]: Without dead ends: 56469 [2020-12-22 07:30:41,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:30:41,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56469 states. [2020-12-22 07:30:44,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56469 to 56467. [2020-12-22 07:30:44,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56467 states. [2020-12-22 07:30:45,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56467 states to 56467 states and 82802 transitions. [2020-12-22 07:30:45,010 INFO L78 Accepts]: Start accepts. Automaton has 56467 states and 82802 transitions. Word has length 85 [2020-12-22 07:30:45,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:30:45,011 INFO L481 AbstractCegarLoop]: Abstraction has 56467 states and 82802 transitions. [2020-12-22 07:30:45,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:30:45,011 INFO L276 IsEmpty]: Start isEmpty. Operand 56467 states and 82802 transitions. [2020-12-22 07:30:45,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-22 07:30:45,045 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:30:45,045 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:30:45,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 07:30:45,046 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:30:45,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:30:45,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1460670259, now seen corresponding path program 1 times [2020-12-22 07:30:45,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:30:45,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593938417] [2020-12-22 07:30:45,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:30:45,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:30:45,259 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 07:30:45,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593938417] [2020-12-22 07:30:45,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986121856] [2020-12-22 07:30:45,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:30:45,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:30:45,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 07:30:45,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:30:45,745 WARN L197 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2020-12-22 07:30:45,957 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 07:30:45,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:30:45,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6] total 7 [2020-12-22 07:30:45,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115514560] [2020-12-22 07:30:45,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:30:45,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:30:45,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:30:45,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:30:45,960 INFO L87 Difference]: Start difference. First operand 56467 states and 82802 transitions. Second operand 7 states. [2020-12-22 07:30:50,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:30:50,427 INFO L93 Difference]: Finished difference Result 140107 states and 206263 transitions. [2020-12-22 07:30:50,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:30:50,428 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2020-12-22 07:30:50,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:30:50,689 INFO L225 Difference]: With dead ends: 140107 [2020-12-22 07:30:50,690 INFO L226 Difference]: Without dead ends: 100745 [2020-12-22 07:30:50,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:30:50,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100745 states. [2020-12-22 07:30:55,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100745 to 93779. [2020-12-22 07:30:55,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93779 states. [2020-12-22 07:30:55,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93779 states to 93779 states and 137074 transitions. [2020-12-22 07:30:55,445 INFO L78 Accepts]: Start accepts. Automaton has 93779 states and 137074 transitions. Word has length 116 [2020-12-22 07:30:55,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:30:55,446 INFO L481 AbstractCegarLoop]: Abstraction has 93779 states and 137074 transitions. [2020-12-22 07:30:55,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:30:55,446 INFO L276 IsEmpty]: Start isEmpty. Operand 93779 states and 137074 transitions. [2020-12-22 07:30:55,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-12-22 07:30:55,478 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:30:55,479 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:30:55,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-22 07:30:55,680 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:30:55,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:30:55,681 INFO L82 PathProgramCache]: Analyzing trace with hash 761837313, now seen corresponding path program 1 times [2020-12-22 07:30:55,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:30:55,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762295409] [2020-12-22 07:30:55,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:30:55,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:30:56,088 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 07:30:56,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762295409] [2020-12-22 07:30:56,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:30:56,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 07:30:56,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083393523] [2020-12-22 07:30:56,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 07:30:56,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:30:56,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 07:30:56,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:30:56,091 INFO L87 Difference]: Start difference. First operand 93779 states and 137074 transitions. Second operand 8 states. [2020-12-22 07:31:04,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:31:04,932 INFO L93 Difference]: Finished difference Result 243713 states and 359257 transitions. [2020-12-22 07:31:04,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 07:31:04,933 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 117 [2020-12-22 07:31:04,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:31:05,432 INFO L225 Difference]: With dead ends: 243713 [2020-12-22 07:31:05,433 INFO L226 Difference]: Without dead ends: 210239 [2020-12-22 07:31:05,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-22 07:31:05,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210239 states. [2020-12-22 07:31:12,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210239 to 126099. [2020-12-22 07:31:12,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126099 states. [2020-12-22 07:31:12,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126099 states to 126099 states and 184498 transitions. [2020-12-22 07:31:12,752 INFO L78 Accepts]: Start accepts. Automaton has 126099 states and 184498 transitions. Word has length 117 [2020-12-22 07:31:12,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:31:12,752 INFO L481 AbstractCegarLoop]: Abstraction has 126099 states and 184498 transitions. [2020-12-22 07:31:12,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 07:31:12,752 INFO L276 IsEmpty]: Start isEmpty. Operand 126099 states and 184498 transitions. [2020-12-22 07:31:12,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-12-22 07:31:12,780 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:31:12,780 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:31:12,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 07:31:12,780 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:31:12,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:31:12,781 INFO L82 PathProgramCache]: Analyzing trace with hash 739766161, now seen corresponding path program 1 times [2020-12-22 07:31:12,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:31:12,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352503150] [2020-12-22 07:31:12,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:31:12,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:31:12,848 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:31:12,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352503150] [2020-12-22 07:31:12,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:31:12,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:31:12,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196897675] [2020-12-22 07:31:12,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:31:12,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:31:12,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:31:12,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:31:12,850 INFO L87 Difference]: Start difference. First operand 126099 states and 184498 transitions. Second operand 3 states. [2020-12-22 07:31:21,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:31:21,309 INFO L93 Difference]: Finished difference Result 261778 states and 383555 transitions. [2020-12-22 07:31:21,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:31:21,310 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 117 [2020-12-22 07:31:21,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:31:21,592 INFO L225 Difference]: With dead ends: 261778 [2020-12-22 07:31:21,593 INFO L226 Difference]: Without dead ends: 186752 [2020-12-22 07:31:21,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:31:22,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186752 states. [2020-12-22 07:31:31,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186752 to 176526. [2020-12-22 07:31:31,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176526 states. [2020-12-22 07:31:31,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176526 states to 176526 states and 256177 transitions. [2020-12-22 07:31:31,756 INFO L78 Accepts]: Start accepts. Automaton has 176526 states and 256177 transitions. Word has length 117 [2020-12-22 07:31:31,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:31:31,757 INFO L481 AbstractCegarLoop]: Abstraction has 176526 states and 256177 transitions. [2020-12-22 07:31:31,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:31:31,757 INFO L276 IsEmpty]: Start isEmpty. Operand 176526 states and 256177 transitions. [2020-12-22 07:31:31,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-12-22 07:31:31,784 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:31:31,784 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:31:31,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 07:31:31,785 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:31:31,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:31:31,785 INFO L82 PathProgramCache]: Analyzing trace with hash -313345871, now seen corresponding path program 1 times [2020-12-22 07:31:31,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:31:31,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806737946] [2020-12-22 07:31:31,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:31:31,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:31:31,847 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:31:31,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806737946] [2020-12-22 07:31:31,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:31:31,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:31:31,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770038295] [2020-12-22 07:31:31,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:31:31,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:31:31,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:31:31,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:31:31,850 INFO L87 Difference]: Start difference. First operand 176526 states and 256177 transitions. Second operand 3 states. [2020-12-22 07:31:41,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:31:41,034 INFO L93 Difference]: Finished difference Result 253915 states and 368037 transitions. [2020-12-22 07:31:41,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:31:41,039 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 117 [2020-12-22 07:31:41,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:31:41,311 INFO L225 Difference]: With dead ends: 253915 [2020-12-22 07:31:41,311 INFO L226 Difference]: Without dead ends: 180305 [2020-12-22 07:31:41,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:31:41,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180305 states. [2020-12-22 07:31:50,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180305 to 176645. [2020-12-22 07:31:50,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176645 states. [2020-12-22 07:31:50,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176645 states to 176645 states and 253136 transitions. [2020-12-22 07:31:50,970 INFO L78 Accepts]: Start accepts. Automaton has 176645 states and 253136 transitions. Word has length 117 [2020-12-22 07:31:50,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:31:50,971 INFO L481 AbstractCegarLoop]: Abstraction has 176645 states and 253136 transitions. [2020-12-22 07:31:50,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:31:50,971 INFO L276 IsEmpty]: Start isEmpty. Operand 176645 states and 253136 transitions. [2020-12-22 07:31:50,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-12-22 07:31:50,998 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:31:50,998 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:31:50,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 07:31:50,998 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:31:50,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:31:50,999 INFO L82 PathProgramCache]: Analyzing trace with hash -740691935, now seen corresponding path program 1 times [2020-12-22 07:31:50,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:31:50,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511794878] [2020-12-22 07:31:51,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:31:51,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:31:51,348 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:31:51,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511794878] [2020-12-22 07:31:51,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:31:51,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:31:51,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114728251] [2020-12-22 07:31:51,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:31:51,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:31:51,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:31:51,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:31:51,354 INFO L87 Difference]: Start difference. First operand 176645 states and 253136 transitions. Second operand 3 states. [2020-12-22 07:32:02,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:32:02,508 INFO L93 Difference]: Finished difference Result 340271 states and 487759 transitions. [2020-12-22 07:32:02,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:32:02,509 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 117 [2020-12-22 07:32:02,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:32:03,046 INFO L225 Difference]: With dead ends: 340271 [2020-12-22 07:32:03,047 INFO L226 Difference]: Without dead ends: 235415 [2020-12-22 07:32:03,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:32:03,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235415 states. [2020-12-22 07:32:15,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235415 to 230537. [2020-12-22 07:32:15,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230537 states. [2020-12-22 07:32:16,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230537 states to 230537 states and 326664 transitions. [2020-12-22 07:32:16,284 INFO L78 Accepts]: Start accepts. Automaton has 230537 states and 326664 transitions. Word has length 117 [2020-12-22 07:32:16,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:32:16,284 INFO L481 AbstractCegarLoop]: Abstraction has 230537 states and 326664 transitions. [2020-12-22 07:32:16,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:32:16,284 INFO L276 IsEmpty]: Start isEmpty. Operand 230537 states and 326664 transitions. [2020-12-22 07:32:16,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-12-22 07:32:16,314 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:32:16,314 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:32:16,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 07:32:16,315 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:32:16,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:32:16,315 INFO L82 PathProgramCache]: Analyzing trace with hash 19416689, now seen corresponding path program 1 times [2020-12-22 07:32:16,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:32:16,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84493502] [2020-12-22 07:32:16,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:32:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:32:16,386 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:32:16,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84493502] [2020-12-22 07:32:16,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:32:16,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:32:16,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212704688] [2020-12-22 07:32:16,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:32:16,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:32:16,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:32:16,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:32:16,389 INFO L87 Difference]: Start difference. First operand 230537 states and 326664 transitions. Second operand 3 states. [2020-12-22 07:32:39,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:32:39,050 INFO L93 Difference]: Finished difference Result 642736 states and 908162 transitions. [2020-12-22 07:32:39,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:32:39,050 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 117 [2020-12-22 07:32:39,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:32:39,883 INFO L225 Difference]: With dead ends: 642736 [2020-12-22 07:32:39,883 INFO L226 Difference]: Without dead ends: 425278 [2020-12-22 07:32:40,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:32:40,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425278 states. [2020-12-22 07:33:03,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425278 to 419956. [2020-12-22 07:33:03,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419956 states. [2020-12-22 07:33:04,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419956 states to 419956 states and 587978 transitions. [2020-12-22 07:33:04,560 INFO L78 Accepts]: Start accepts. Automaton has 419956 states and 587978 transitions. Word has length 117 [2020-12-22 07:33:04,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:33:04,561 INFO L481 AbstractCegarLoop]: Abstraction has 419956 states and 587978 transitions. [2020-12-22 07:33:04,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:33:04,561 INFO L276 IsEmpty]: Start isEmpty. Operand 419956 states and 587978 transitions. [2020-12-22 07:33:05,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-12-22 07:33:05,374 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:33:05,374 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:33:05,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 07:33:05,375 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:33:05,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:33:05,378 INFO L82 PathProgramCache]: Analyzing trace with hash 2110569159, now seen corresponding path program 1 times [2020-12-22 07:33:05,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:33:05,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169265796] [2020-12-22 07:33:05,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:33:05,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:33:05,529 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:33:05,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169265796] [2020-12-22 07:33:05,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:33:05,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:33:05,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042809887] [2020-12-22 07:33:05,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:33:05,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:33:05,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:33:05,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:33:05,536 INFO L87 Difference]: Start difference. First operand 419956 states and 587978 transitions. Second operand 3 states. [2020-12-22 07:33:48,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:33:48,053 INFO L93 Difference]: Finished difference Result 1214205 states and 1696208 transitions. [2020-12-22 07:33:48,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:33:48,054 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 117 [2020-12-22 07:33:48,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:33:50,235 INFO L225 Difference]: With dead ends: 1214205 [2020-12-22 07:33:50,235 INFO L226 Difference]: Without dead ends: 808119 [2020-12-22 07:33:50,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:33:51,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808119 states.