/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-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:51:48,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:51:48,908 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:51:48,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:51:48,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:51:48,981 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:51:48,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:51:48,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:51:49,001 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:51:49,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:51:49,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:51:49,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:51:49,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:51:49,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:51:49,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:51:49,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:51:49,026 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:51:49,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:51:49,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:51:49,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:51:49,050 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:51:49,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:51:49,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:51:49,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:51:49,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:51:49,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:51:49,084 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:51:49,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:51:49,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:51:49,089 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:51:49,089 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:51:49,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:51:49,091 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:51:49,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:51:49,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:51:49,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:51:49,095 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:51:49,150 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:51:49,151 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:51:49,156 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:51:49,156 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:51:49,157 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:51:49,157 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:51:49,157 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:51:49,157 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:51:49,158 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:51:49,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:51:49,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:51:49,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:51:49,160 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:51:49,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:51:49,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:51:49,161 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:51:49,161 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:51:49,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:51:49,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:51:49,162 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:51:49,162 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:51:49,162 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:51:49,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:51:49,163 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:51:49,163 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:51:49,163 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:51:49,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:51:49,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:51:49,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:51:49,689 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:51:49,690 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:51:49,691 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-22 08:51:49,807 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bdc44ec8/df66ddabffa5435eb8739c7c52d7df1d/FLAG65478ed95 [2020-12-22 08:51:50,625 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:51:50,626 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-22 08:51:50,639 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bdc44ec8/df66ddabffa5435eb8739c7c52d7df1d/FLAG65478ed95 [2020-12-22 08:51:50,937 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bdc44ec8/df66ddabffa5435eb8739c7c52d7df1d [2020-12-22 08:51:50,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:51:50,949 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:51:50,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:51:50,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:51:50,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:51:50,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:51:50" (1/1) ... [2020-12-22 08:51:50,962 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f1279bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:51:50, skipping insertion in model container [2020-12-22 08:51:50,962 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:51:50" (1/1) ... [2020-12-22 08:51:50,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:51:51,065 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:51:51,397 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-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[6328,6341] [2020-12-22 08:51:51,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:51:51,455 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:51:51,514 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-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[6328,6341] [2020-12-22 08:51:51,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:51:51,578 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:51:51,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:51:51 WrapperNode [2020-12-22 08:51:51,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:51:51,583 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:51:51,583 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:51:51,583 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:51:51,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:51:51" (1/1) ... [2020-12-22 08:51:51,608 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:51:51" (1/1) ... [2020-12-22 08:51:51,659 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:51:51,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:51:51,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:51:51,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:51:51,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:51:51" (1/1) ... [2020-12-22 08:51:51,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:51:51" (1/1) ... [2020-12-22 08:51:51,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:51:51" (1/1) ... [2020-12-22 08:51:51,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:51:51" (1/1) ... [2020-12-22 08:51:51,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:51:51" (1/1) ... [2020-12-22 08:51:51,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:51:51" (1/1) ... [2020-12-22 08:51:51,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:51:51" (1/1) ... [2020-12-22 08:51:51,729 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:51:51,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:51:51,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:51:51,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:51:51,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:51:51" (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 08:51:51,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:51:51,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:51:51,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:51:51,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:51:52,973 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:51:52,974 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:51:52,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:51:52 BoogieIcfgContainer [2020-12-22 08:51:52,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:51:52,980 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:51:52,980 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:51:52,984 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:51:52,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:51:50" (1/3) ... [2020-12-22 08:51:52,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3da1d394 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:51:52, skipping insertion in model container [2020-12-22 08:51:52,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:51:51" (2/3) ... [2020-12-22 08:51:52,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3da1d394 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:51:52, skipping insertion in model container [2020-12-22 08:51:52,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:51:52" (3/3) ... [2020-12-22 08:51:52,989 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-22 08:51:52,997 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:51:53,003 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:51:53,021 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:51:53,054 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:51:53,054 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:51:53,054 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:51:53,054 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:51:53,054 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:51:53,055 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:51:53,055 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:51:53,055 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:51:53,077 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states. [2020-12-22 08:51:53,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 08:51:53,088 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:51:53,089 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] [2020-12-22 08:51:53,090 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:51:53,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:51:53,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1122612567, now seen corresponding path program 1 times [2020-12-22 08:51:53,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:51:53,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712926522] [2020-12-22 08:51:53,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:51:53,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:51:53,647 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 08:51:53,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712926522] [2020-12-22 08:51:53,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:51:53,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:51:53,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019948986] [2020-12-22 08:51:53,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:51:53,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:51:53,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:51:53,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:51:53,678 INFO L87 Difference]: Start difference. First operand 118 states. Second operand 3 states. [2020-12-22 08:51:53,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:51:53,772 INFO L93 Difference]: Finished difference Result 260 states and 422 transitions. [2020-12-22 08:51:53,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:51:53,777 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-22 08:51:53,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:51:53,800 INFO L225 Difference]: With dead ends: 260 [2020-12-22 08:51:53,800 INFO L226 Difference]: Without dead ends: 179 [2020-12-22 08:51:53,805 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 08:51:53,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-12-22 08:51:53,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2020-12-22 08:51:53,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-12-22 08:51:53,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 256 transitions. [2020-12-22 08:51:53,937 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 256 transitions. Word has length 73 [2020-12-22 08:51:53,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:51:53,940 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 256 transitions. [2020-12-22 08:51:53,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:51:53,940 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 256 transitions. [2020-12-22 08:51:53,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 08:51:53,943 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:51:53,943 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] [2020-12-22 08:51:53,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:51:53,944 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:51:53,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:51:53,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1622464055, now seen corresponding path program 1 times [2020-12-22 08:51:53,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:51:53,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377849551] [2020-12-22 08:51:53,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:51:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:51:54,231 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 08:51:54,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377849551] [2020-12-22 08:51:54,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:51:54,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:51:54,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108456700] [2020-12-22 08:51:54,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:51:54,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:51:54,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:51:54,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:51:54,236 INFO L87 Difference]: Start difference. First operand 177 states and 256 transitions. Second operand 3 states. [2020-12-22 08:51:54,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:51:54,331 INFO L93 Difference]: Finished difference Result 429 states and 656 transitions. [2020-12-22 08:51:54,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:51:54,331 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-12-22 08:51:54,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:51:54,335 INFO L225 Difference]: With dead ends: 429 [2020-12-22 08:51:54,335 INFO L226 Difference]: Without dead ends: 295 [2020-12-22 08:51:54,337 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 08:51:54,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-12-22 08:51:54,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 293. [2020-12-22 08:51:54,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-12-22 08:51:54,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 440 transitions. [2020-12-22 08:51:54,400 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 440 transitions. Word has length 74 [2020-12-22 08:51:54,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:51:54,401 INFO L481 AbstractCegarLoop]: Abstraction has 293 states and 440 transitions. [2020-12-22 08:51:54,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:51:54,401 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 440 transitions. [2020-12-22 08:51:54,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 08:51:54,405 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:51:54,406 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] [2020-12-22 08:51:54,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:51:54,406 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:51:54,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:51:54,407 INFO L82 PathProgramCache]: Analyzing trace with hash 549627260, now seen corresponding path program 1 times [2020-12-22 08:51:54,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:51:54,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140844414] [2020-12-22 08:51:54,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:51:54,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:51:54,522 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 08:51:54,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140844414] [2020-12-22 08:51:54,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:51:54,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:51:54,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471824212] [2020-12-22 08:51:54,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:51:54,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:51:54,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:51:54,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:51:54,525 INFO L87 Difference]: Start difference. First operand 293 states and 440 transitions. Second operand 3 states. [2020-12-22 08:51:54,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:51:54,585 INFO L93 Difference]: Finished difference Result 761 states and 1182 transitions. [2020-12-22 08:51:54,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:51:54,585 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-12-22 08:51:54,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:51:54,590 INFO L225 Difference]: With dead ends: 761 [2020-12-22 08:51:54,590 INFO L226 Difference]: Without dead ends: 511 [2020-12-22 08:51:54,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:51:54,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2020-12-22 08:51:54,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 509. [2020-12-22 08:51:54,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2020-12-22 08:51:54,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 780 transitions. [2020-12-22 08:51:54,647 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 780 transitions. Word has length 75 [2020-12-22 08:51:54,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:51:54,648 INFO L481 AbstractCegarLoop]: Abstraction has 509 states and 780 transitions. [2020-12-22 08:51:54,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:51:54,648 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 780 transitions. [2020-12-22 08:51:54,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 08:51:54,650 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:51:54,651 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] [2020-12-22 08:51:54,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:51:54,651 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:51:54,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:51:54,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1347673334, now seen corresponding path program 1 times [2020-12-22 08:51:54,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:51:54,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160643622] [2020-12-22 08:51:54,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:51:54,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:51:54,788 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 08:51:54,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160643622] [2020-12-22 08:51:54,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:51:54,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:51:54,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048731738] [2020-12-22 08:51:54,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:51:54,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:51:54,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:51:54,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:51:54,791 INFO L87 Difference]: Start difference. First operand 509 states and 780 transitions. Second operand 3 states. [2020-12-22 08:51:54,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:51:54,851 INFO L93 Difference]: Finished difference Result 1377 states and 2150 transitions. [2020-12-22 08:51:54,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:51:54,851 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-22 08:51:54,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:51:54,857 INFO L225 Difference]: With dead ends: 1377 [2020-12-22 08:51:54,858 INFO L226 Difference]: Without dead ends: 911 [2020-12-22 08:51:54,860 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 08:51:54,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2020-12-22 08:51:54,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 909. [2020-12-22 08:51:54,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 909 states. [2020-12-22 08:51:54,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1404 transitions. [2020-12-22 08:51:54,909 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1404 transitions. Word has length 76 [2020-12-22 08:51:54,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:51:54,909 INFO L481 AbstractCegarLoop]: Abstraction has 909 states and 1404 transitions. [2020-12-22 08:51:54,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:51:54,910 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1404 transitions. [2020-12-22 08:51:54,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 08:51:54,911 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:51:54,911 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 08:51:54,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:51:54,912 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:51:54,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:51:54,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1762980839, now seen corresponding path program 1 times [2020-12-22 08:51:54,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:51:54,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406841841] [2020-12-22 08:51:54,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:51:54,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:51:55,081 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 08:51:55,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406841841] [2020-12-22 08:51:55,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:51:55,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:51:55,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306963198] [2020-12-22 08:51:55,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:51:55,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:51:55,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:51:55,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:51:55,083 INFO L87 Difference]: Start difference. First operand 909 states and 1404 transitions. Second operand 3 states. [2020-12-22 08:51:55,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:51:55,191 INFO L93 Difference]: Finished difference Result 2513 states and 3918 transitions. [2020-12-22 08:51:55,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:51:55,194 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 08:51:55,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:51:55,205 INFO L225 Difference]: With dead ends: 2513 [2020-12-22 08:51:55,205 INFO L226 Difference]: Without dead ends: 1647 [2020-12-22 08:51:55,207 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 08:51:55,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2020-12-22 08:51:55,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1645. [2020-12-22 08:51:55,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1645 states. [2020-12-22 08:51:55,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 2540 transitions. [2020-12-22 08:51:55,313 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 2540 transitions. Word has length 77 [2020-12-22 08:51:55,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:51:55,315 INFO L481 AbstractCegarLoop]: Abstraction has 1645 states and 2540 transitions. [2020-12-22 08:51:55,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:51:55,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 2540 transitions. [2020-12-22 08:51:55,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 08:51:55,317 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:51:55,318 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 08:51:55,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:51:55,318 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:51:55,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:51:55,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1296361934, now seen corresponding path program 1 times [2020-12-22 08:51:55,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:51:55,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136364286] [2020-12-22 08:51:55,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:51:55,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:51:55,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:51:55,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136364286] [2020-12-22 08:51:55,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:51:55,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:51:55,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734496812] [2020-12-22 08:51:55,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:51:55,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:51:55,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:51:55,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:51:55,495 INFO L87 Difference]: Start difference. First operand 1645 states and 2540 transitions. Second operand 6 states. [2020-12-22 08:51:55,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:51:55,975 INFO L93 Difference]: Finished difference Result 4833 states and 7502 transitions. [2020-12-22 08:51:55,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:51:55,975 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-12-22 08:51:55,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:51:55,993 INFO L225 Difference]: With dead ends: 4833 [2020-12-22 08:51:55,994 INFO L226 Difference]: Without dead ends: 3231 [2020-12-22 08:51:55,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:51:56,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3231 states. [2020-12-22 08:51:56,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3231 to 3229. [2020-12-22 08:51:56,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3229 states. [2020-12-22 08:51:56,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3229 states to 3229 states and 4988 transitions. [2020-12-22 08:51:56,269 INFO L78 Accepts]: Start accepts. Automaton has 3229 states and 4988 transitions. Word has length 78 [2020-12-22 08:51:56,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:51:56,270 INFO L481 AbstractCegarLoop]: Abstraction has 3229 states and 4988 transitions. [2020-12-22 08:51:56,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:51:56,270 INFO L276 IsEmpty]: Start isEmpty. Operand 3229 states and 4988 transitions. [2020-12-22 08:51:56,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 08:51:56,273 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:51:56,273 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 08:51:56,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:51:56,275 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:51:56,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:51:56,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1156574829, now seen corresponding path program 1 times [2020-12-22 08:51:56,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:51:56,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336764962] [2020-12-22 08:51:56,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:51:56,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:51:56,390 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 08:51:56,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336764962] [2020-12-22 08:51:56,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:51:56,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:51:56,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306911001] [2020-12-22 08:51:56,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:51:56,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:51:56,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:51:56,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:51:56,394 INFO L87 Difference]: Start difference. First operand 3229 states and 4988 transitions. Second operand 6 states. [2020-12-22 08:51:57,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:51:57,046 INFO L93 Difference]: Finished difference Result 9569 states and 14814 transitions. [2020-12-22 08:51:57,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:51:57,047 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-12-22 08:51:57,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:51:57,082 INFO L225 Difference]: With dead ends: 9569 [2020-12-22 08:51:57,082 INFO L226 Difference]: Without dead ends: 6383 [2020-12-22 08:51:57,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:51:57,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6383 states. [2020-12-22 08:51:57,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6383 to 6381. [2020-12-22 08:51:57,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6381 states. [2020-12-22 08:51:57,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6381 states to 6381 states and 9836 transitions. [2020-12-22 08:51:57,620 INFO L78 Accepts]: Start accepts. Automaton has 6381 states and 9836 transitions. Word has length 78 [2020-12-22 08:51:57,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:51:57,621 INFO L481 AbstractCegarLoop]: Abstraction has 6381 states and 9836 transitions. [2020-12-22 08:51:57,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:51:57,621 INFO L276 IsEmpty]: Start isEmpty. Operand 6381 states and 9836 transitions. [2020-12-22 08:51:57,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 08:51:57,623 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:51:57,623 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 08:51:57,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:51:57,623 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:51:57,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:51:57,624 INFO L82 PathProgramCache]: Analyzing trace with hash -290454766, now seen corresponding path program 1 times [2020-12-22 08:51:57,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:51:57,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526594893] [2020-12-22 08:51:57,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:51:57,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:51:57,717 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 08:51:57,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526594893] [2020-12-22 08:51:57,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:51:57,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:51:57,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279068856] [2020-12-22 08:51:57,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:51:57,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:51:57,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:51:57,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:51:57,720 INFO L87 Difference]: Start difference. First operand 6381 states and 9836 transitions. Second operand 5 states. [2020-12-22 08:51:58,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:51:58,320 INFO L93 Difference]: Finished difference Result 12719 states and 19629 transitions. [2020-12-22 08:51:58,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:51:58,321 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-12-22 08:51:58,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:51:58,354 INFO L225 Difference]: With dead ends: 12719 [2020-12-22 08:51:58,354 INFO L226 Difference]: Without dead ends: 6381 [2020-12-22 08:51:58,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:51:58,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6381 states. [2020-12-22 08:51:58,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6381 to 6381. [2020-12-22 08:51:58,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6381 states. [2020-12-22 08:51:58,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6381 states to 6381 states and 9772 transitions. [2020-12-22 08:51:58,936 INFO L78 Accepts]: Start accepts. Automaton has 6381 states and 9772 transitions. Word has length 78 [2020-12-22 08:51:58,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:51:58,936 INFO L481 AbstractCegarLoop]: Abstraction has 6381 states and 9772 transitions. [2020-12-22 08:51:58,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:51:58,937 INFO L276 IsEmpty]: Start isEmpty. Operand 6381 states and 9772 transitions. [2020-12-22 08:51:58,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 08:51:58,938 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:51:58,938 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 08:51:58,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:51:58,938 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:51:58,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:51:58,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1754526323, now seen corresponding path program 1 times [2020-12-22 08:51:58,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:51:58,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550661909] [2020-12-22 08:51:58,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:51:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:51:59,036 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 08:51:59,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550661909] [2020-12-22 08:51:59,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:51:59,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:51:59,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442312138] [2020-12-22 08:51:59,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:51:59,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:51:59,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:51:59,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:51:59,044 INFO L87 Difference]: Start difference. First operand 6381 states and 9772 transitions. Second operand 5 states. [2020-12-22 08:51:59,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:51:59,630 INFO L93 Difference]: Finished difference Result 12719 states and 19501 transitions. [2020-12-22 08:51:59,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:51:59,631 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-12-22 08:51:59,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:51:59,675 INFO L225 Difference]: With dead ends: 12719 [2020-12-22 08:51:59,675 INFO L226 Difference]: Without dead ends: 6381 [2020-12-22 08:51:59,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:51:59,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6381 states. [2020-12-22 08:52:00,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6381 to 6381. [2020-12-22 08:52:00,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6381 states. [2020-12-22 08:52:00,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6381 states to 6381 states and 9708 transitions. [2020-12-22 08:52:00,274 INFO L78 Accepts]: Start accepts. Automaton has 6381 states and 9708 transitions. Word has length 78 [2020-12-22 08:52:00,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:52:00,274 INFO L481 AbstractCegarLoop]: Abstraction has 6381 states and 9708 transitions. [2020-12-22 08:52:00,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:52:00,275 INFO L276 IsEmpty]: Start isEmpty. Operand 6381 states and 9708 transitions. [2020-12-22 08:52:00,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 08:52:00,275 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:52:00,276 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 08:52:00,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:52:00,276 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:52:00,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:52:00,277 INFO L82 PathProgramCache]: Analyzing trace with hash -427141134, now seen corresponding path program 1 times [2020-12-22 08:52:00,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:52:00,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238480880] [2020-12-22 08:52:00,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:52:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:52:00,445 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 08:52:00,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238480880] [2020-12-22 08:52:00,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:52:00,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:52:00,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068125215] [2020-12-22 08:52:00,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:52:00,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:52:00,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:52:00,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:52:00,451 INFO L87 Difference]: Start difference. First operand 6381 states and 9708 transitions. Second operand 8 states. [2020-12-22 08:52:05,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:52:05,337 INFO L93 Difference]: Finished difference Result 76099 states and 116023 transitions. [2020-12-22 08:52:05,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 08:52:05,337 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-12-22 08:52:05,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:52:05,558 INFO L225 Difference]: With dead ends: 76099 [2020-12-22 08:52:05,559 INFO L226 Difference]: Without dead ends: 69761 [2020-12-22 08:52:05,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-12-22 08:52:05,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69761 states. [2020-12-22 08:52:07,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69761 to 12717. [2020-12-22 08:52:07,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12717 states. [2020-12-22 08:52:07,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12717 states to 12717 states and 19116 transitions. [2020-12-22 08:52:07,514 INFO L78 Accepts]: Start accepts. Automaton has 12717 states and 19116 transitions. Word has length 78 [2020-12-22 08:52:07,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:52:07,514 INFO L481 AbstractCegarLoop]: Abstraction has 12717 states and 19116 transitions. [2020-12-22 08:52:07,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:52:07,514 INFO L276 IsEmpty]: Start isEmpty. Operand 12717 states and 19116 transitions. [2020-12-22 08:52:07,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 08:52:07,515 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:52:07,515 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 08:52:07,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:52:07,516 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:52:07,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:52:07,517 INFO L82 PathProgramCache]: Analyzing trace with hash 912411086, now seen corresponding path program 1 times [2020-12-22 08:52:07,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:52:07,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857534749] [2020-12-22 08:52:07,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:52:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:52:07,598 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 08:52:07,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857534749] [2020-12-22 08:52:07,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:52:07,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:52:07,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627509200] [2020-12-22 08:52:07,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:52:07,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:52:07,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:52:07,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:52:07,601 INFO L87 Difference]: Start difference. First operand 12717 states and 19116 transitions. Second operand 3 states. [2020-12-22 08:52:09,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:52:09,964 INFO L93 Difference]: Finished difference Result 36657 states and 54830 transitions. [2020-12-22 08:52:09,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:52:09,964 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-22 08:52:09,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:52:10,008 INFO L225 Difference]: With dead ends: 36657 [2020-12-22 08:52:10,009 INFO L226 Difference]: Without dead ends: 23983 [2020-12-22 08:52:10,031 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 08:52:10,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23983 states. [2020-12-22 08:52:12,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23983 to 23725. [2020-12-22 08:52:12,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23725 states. [2020-12-22 08:52:12,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23725 states to 23725 states and 34860 transitions. [2020-12-22 08:52:12,416 INFO L78 Accepts]: Start accepts. Automaton has 23725 states and 34860 transitions. Word has length 80 [2020-12-22 08:52:12,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:52:12,416 INFO L481 AbstractCegarLoop]: Abstraction has 23725 states and 34860 transitions. [2020-12-22 08:52:12,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:52:12,416 INFO L276 IsEmpty]: Start isEmpty. Operand 23725 states and 34860 transitions. [2020-12-22 08:52:12,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 08:52:12,417 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:52:12,417 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 08:52:12,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:52:12,418 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:52:12,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:52:12,418 INFO L82 PathProgramCache]: Analyzing trace with hash 933413741, now seen corresponding path program 1 times [2020-12-22 08:52:12,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:52:12,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900962922] [2020-12-22 08:52:12,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:52:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:52:12,757 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 08:52:12,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900962922] [2020-12-22 08:52:12,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:52:12,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:52:12,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850795890] [2020-12-22 08:52:12,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:52:12,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:52:12,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:52:12,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:52:12,760 INFO L87 Difference]: Start difference. First operand 23725 states and 34860 transitions. Second operand 8 states. [2020-12-22 08:52:16,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:52:16,697 INFO L93 Difference]: Finished difference Result 59187 states and 87215 transitions. [2020-12-22 08:52:16,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 08:52:16,697 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-12-22 08:52:16,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:52:16,744 INFO L225 Difference]: With dead ends: 59187 [2020-12-22 08:52:16,744 INFO L226 Difference]: Without dead ends: 35505 [2020-12-22 08:52:16,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:52:16,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35505 states. [2020-12-22 08:52:19,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35505 to 23725. [2020-12-22 08:52:19,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23725 states. [2020-12-22 08:52:19,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23725 states to 23725 states and 34604 transitions. [2020-12-22 08:52:19,529 INFO L78 Accepts]: Start accepts. Automaton has 23725 states and 34604 transitions. Word has length 80 [2020-12-22 08:52:19,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:52:19,530 INFO L481 AbstractCegarLoop]: Abstraction has 23725 states and 34604 transitions. [2020-12-22 08:52:19,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:52:19,530 INFO L276 IsEmpty]: Start isEmpty. Operand 23725 states and 34604 transitions. [2020-12-22 08:52:19,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 08:52:19,531 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:52:19,531 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 08:52:19,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:52:19,531 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:52:19,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:52:19,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1558777127, now seen corresponding path program 1 times [2020-12-22 08:52:19,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:52:19,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631804481] [2020-12-22 08:52:19,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:52:19,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:52:19,587 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 08:52:19,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631804481] [2020-12-22 08:52:19,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:52:19,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:52:19,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213530343] [2020-12-22 08:52:19,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:52:19,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:52:19,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:52:19,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:52:19,589 INFO L87 Difference]: Start difference. First operand 23725 states and 34604 transitions. Second operand 3 states. [2020-12-22 08:52:22,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:52:22,550 INFO L93 Difference]: Finished difference Result 46516 states and 68402 transitions. [2020-12-22 08:52:22,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:52:22,550 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-12-22 08:52:22,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:52:22,583 INFO L225 Difference]: With dead ends: 46516 [2020-12-22 08:52:22,583 INFO L226 Difference]: Without dead ends: 33841 [2020-12-22 08:52:22,596 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 08:52:22,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33841 states. [2020-12-22 08:52:25,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33841 to 33839. [2020-12-22 08:52:25,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33839 states. [2020-12-22 08:52:25,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33839 states to 33839 states and 49198 transitions. [2020-12-22 08:52:25,842 INFO L78 Accepts]: Start accepts. Automaton has 33839 states and 49198 transitions. Word has length 81 [2020-12-22 08:52:25,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:52:25,842 INFO L481 AbstractCegarLoop]: Abstraction has 33839 states and 49198 transitions. [2020-12-22 08:52:25,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:52:25,842 INFO L276 IsEmpty]: Start isEmpty. Operand 33839 states and 49198 transitions. [2020-12-22 08:52:25,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 08:52:25,843 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:52:25,843 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 08:52:25,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:52:25,843 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:52:25,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:52:25,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1130854413, now seen corresponding path program 1 times [2020-12-22 08:52:25,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:52:25,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351640053] [2020-12-22 08:52:25,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:52:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:52:26,169 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 08:52:26,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351640053] [2020-12-22 08:52:26,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:52:26,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:52:26,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757773577] [2020-12-22 08:52:26,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:52:26,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:52:26,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:52:26,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:52:26,172 INFO L87 Difference]: Start difference. First operand 33839 states and 49198 transitions. Second operand 5 states. [2020-12-22 08:52:32,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:52:32,278 INFO L93 Difference]: Finished difference Result 60987 states and 88393 transitions. [2020-12-22 08:52:32,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:52:32,278 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-12-22 08:52:32,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:52:32,341 INFO L225 Difference]: With dead ends: 60987 [2020-12-22 08:52:32,341 INFO L226 Difference]: Without dead ends: 60985 [2020-12-22 08:52:32,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:52:32,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60985 states. [2020-12-22 08:52:36,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60985 to 34863. [2020-12-22 08:52:36,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34863 states. [2020-12-22 08:52:36,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34863 states to 34863 states and 50094 transitions. [2020-12-22 08:52:36,078 INFO L78 Accepts]: Start accepts. Automaton has 34863 states and 50094 transitions. Word has length 81 [2020-12-22 08:52:36,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:52:36,079 INFO L481 AbstractCegarLoop]: Abstraction has 34863 states and 50094 transitions. [2020-12-22 08:52:36,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:52:36,079 INFO L276 IsEmpty]: Start isEmpty. Operand 34863 states and 50094 transitions. [2020-12-22 08:52:36,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-22 08:52:36,088 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:52:36,089 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] [2020-12-22 08:52:36,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:52:36,089 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:52:36,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:52:36,090 INFO L82 PathProgramCache]: Analyzing trace with hash 905576252, now seen corresponding path program 1 times [2020-12-22 08:52:36,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:52:36,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446907595] [2020-12-22 08:52:36,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:52:36,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:52:36,274 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 08:52:36,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446907595] [2020-12-22 08:52:36,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:52:36,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:52:36,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636100814] [2020-12-22 08:52:36,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:52:36,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:52:36,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:52:36,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:52:36,276 INFO L87 Difference]: Start difference. First operand 34863 states and 50094 transitions. Second operand 8 states. [2020-12-22 08:52:58,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:52:58,580 INFO L93 Difference]: Finished difference Result 250237 states and 359413 transitions. [2020-12-22 08:52:58,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 08:52:58,581 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 112 [2020-12-22 08:52:58,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:52:59,093 INFO L225 Difference]: With dead ends: 250237 [2020-12-22 08:52:59,093 INFO L226 Difference]: Without dead ends: 215419 [2020-12-22 08:52:59,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-12-22 08:52:59,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215419 states. [2020-12-22 08:53:08,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215419 to 69679. [2020-12-22 08:53:08,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69679 states. [2020-12-22 08:53:08,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69679 states to 69679 states and 99758 transitions. [2020-12-22 08:53:08,485 INFO L78 Accepts]: Start accepts. Automaton has 69679 states and 99758 transitions. Word has length 112 [2020-12-22 08:53:08,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:53:08,485 INFO L481 AbstractCegarLoop]: Abstraction has 69679 states and 99758 transitions. [2020-12-22 08:53:08,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:53:08,485 INFO L276 IsEmpty]: Start isEmpty. Operand 69679 states and 99758 transitions. [2020-12-22 08:53:08,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-22 08:53:08,496 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:53:08,496 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] [2020-12-22 08:53:08,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:53:08,497 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:53:08,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:53:08,497 INFO L82 PathProgramCache]: Analyzing trace with hash -818965810, now seen corresponding path program 1 times [2020-12-22 08:53:08,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:53:08,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192066595] [2020-12-22 08:53:08,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:53:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:53:08,838 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-22 08:53:08,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192066595] [2020-12-22 08:53:08,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:53:08,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:53:08,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543183062] [2020-12-22 08:53:08,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:53:08,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:53:08,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:53:08,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:53:08,845 INFO L87 Difference]: Start difference. First operand 69679 states and 99758 transitions. Second operand 8 states. [2020-12-22 08:53:38,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:53:38,793 INFO L93 Difference]: Finished difference Result 285053 states and 409077 transitions. [2020-12-22 08:53:38,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 08:53:38,794 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 112 [2020-12-22 08:53:38,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:53:39,250 INFO L225 Difference]: With dead ends: 285053 [2020-12-22 08:53:39,250 INFO L226 Difference]: Without dead ends: 250235 [2020-12-22 08:53:39,322 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 08:53:39,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250235 states. [2020-12-22 08:53:56,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250235 to 121967. [2020-12-22 08:53:56,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121967 states. [2020-12-22 08:53:56,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121967 states to 121967 states and 173934 transitions. [2020-12-22 08:53:56,319 INFO L78 Accepts]: Start accepts. Automaton has 121967 states and 173934 transitions. Word has length 112 [2020-12-22 08:53:56,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:53:56,319 INFO L481 AbstractCegarLoop]: Abstraction has 121967 states and 173934 transitions. [2020-12-22 08:53:56,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:53:56,319 INFO L276 IsEmpty]: Start isEmpty. Operand 121967 states and 173934 transitions. [2020-12-22 08:53:56,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-22 08:53:56,343 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:53:56,344 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] [2020-12-22 08:53:56,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:53:56,344 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:53:56,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:53:56,345 INFO L82 PathProgramCache]: Analyzing trace with hash 334980296, now seen corresponding path program 1 times [2020-12-22 08:53:56,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:53:56,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924580674] [2020-12-22 08:53:56,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:53:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:53:56,732 WARN L197 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-12-22 08:53:56,777 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-22 08:53:56,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924580674] [2020-12-22 08:53:56,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:53:56,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:53:56,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624758469] [2020-12-22 08:53:56,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:53:56,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:53:56,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:53:56,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:53:56,780 INFO L87 Difference]: Start difference. First operand 121967 states and 173934 transitions. Second operand 8 states. [2020-12-22 08:54:33,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:54:33,842 INFO L93 Difference]: Finished difference Result 319869 states and 458741 transitions. [2020-12-22 08:54:33,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 08:54:33,842 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 112 [2020-12-22 08:54:33,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:54:34,460 INFO L225 Difference]: With dead ends: 319869 [2020-12-22 08:54:34,460 INFO L226 Difference]: Without dead ends: 285051 [2020-12-22 08:54:34,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-12-22 08:54:34,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285051 states. [2020-12-22 08:54:56,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285051 to 156783. [2020-12-22 08:54:56,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156783 states. [2020-12-22 08:54:57,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156783 states to 156783 states and 223598 transitions. [2020-12-22 08:54:57,141 INFO L78 Accepts]: Start accepts. Automaton has 156783 states and 223598 transitions. Word has length 112 [2020-12-22 08:54:57,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:54:57,141 INFO L481 AbstractCegarLoop]: Abstraction has 156783 states and 223598 transitions. [2020-12-22 08:54:57,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:54:57,142 INFO L276 IsEmpty]: Start isEmpty. Operand 156783 states and 223598 transitions. [2020-12-22 08:54:57,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-22 08:54:57,161 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:54:57,161 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] [2020-12-22 08:54:57,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 08:54:57,162 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:54:57,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:54:57,163 INFO L82 PathProgramCache]: Analyzing trace with hash -522920382, now seen corresponding path program 1 times [2020-12-22 08:54:57,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:54:57,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274940118] [2020-12-22 08:54:57,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:54:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:54:57,377 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-22 08:54:57,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274940118] [2020-12-22 08:54:57,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:54:57,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:54:57,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358248537] [2020-12-22 08:54:57,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:54:57,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:54:57,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:54:57,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:54:57,379 INFO L87 Difference]: Start difference. First operand 156783 states and 223598 transitions. Second operand 8 states. [2020-12-22 08:55:41,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:55:41,401 INFO L93 Difference]: Finished difference Result 354685 states and 508405 transitions. [2020-12-22 08:55:41,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 08:55:41,402 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 112 [2020-12-22 08:55:41,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:55:42,155 INFO L225 Difference]: With dead ends: 354685 [2020-12-22 08:55:42,156 INFO L226 Difference]: Without dead ends: 319867 [2020-12-22 08:55:42,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-12-22 08:55:42,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319867 states.