/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 10:17:06,968 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 10:17:06,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 10:17:07,026 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 10:17:07,027 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 10:17:07,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 10:17:07,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 10:17:07,042 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 10:17:07,045 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 10:17:07,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 10:17:07,053 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 10:17:07,054 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 10:17:07,055 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 10:17:07,058 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 10:17:07,059 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 10:17:07,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 10:17:07,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 10:17:07,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 10:17:07,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 10:17:07,085 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 10:17:07,087 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 10:17:07,088 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 10:17:07,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 10:17:07,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 10:17:07,094 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 10:17:07,097 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 10:17:07,098 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 10:17:07,099 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 10:17:07,100 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 10:17:07,101 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 10:17:07,101 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 10:17:07,102 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 10:17:07,103 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 10:17:07,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 10:17:07,104 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 10:17:07,105 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 10:17:07,106 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 10:17:07,134 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 10:17:07,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 10:17:07,136 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 10:17:07,136 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 10:17:07,136 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 10:17:07,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 10:17:07,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 10:17:07,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 10:17:07,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 10:17:07,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 10:17:07,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 10:17:07,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 10:17:07,138 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 10:17:07,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 10:17:07,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 10:17:07,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 10:17:07,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 10:17:07,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 10:17:07,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 10:17:07,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 10:17:07,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 10:17:07,140 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 10:17:07,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 10:17:07,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 10:17:07,140 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 10:17:07,141 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 10:17:07,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 10:17:07,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 10:17:07,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 10:17:07,532 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 10:17:07,533 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 10:17:07,534 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label09.c [2020-12-22 10:17:07,614 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05e9b6762/fe081402a57b475cb0acf959b1d6838f/FLAGd6a7d42d5 [2020-12-22 10:17:08,641 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 10:17:08,642 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label09.c [2020-12-22 10:17:08,692 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05e9b6762/fe081402a57b475cb0acf959b1d6838f/FLAGd6a7d42d5 [2020-12-22 10:17:09,071 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05e9b6762/fe081402a57b475cb0acf959b1d6838f [2020-12-22 10:17:09,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 10:17:09,078 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 10:17:09,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 10:17:09,082 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 10:17:09,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 10:17:09,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:17:09" (1/1) ... [2020-12-22 10:17:09,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33e755f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:09, skipping insertion in model container [2020-12-22 10:17:09,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:17:09" (1/1) ... [2020-12-22 10:17:09,097 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 10:17:09,322 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 10:17:09,884 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label09.c[20572,20585] [2020-12-22 10:17:09,981 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label09.c[28077,28090] [2020-12-22 10:17:11,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:17:11,557 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 10:17:11,673 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label09.c[20572,20585] [2020-12-22 10:17:11,692 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label09.c[28077,28090] [2020-12-22 10:17:12,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:17:12,298 INFO L208 MainTranslator]: Completed translation [2020-12-22 10:17:12,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:12 WrapperNode [2020-12-22 10:17:12,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 10:17:12,301 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 10:17:12,301 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 10:17:12,305 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 10:17:12,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:12" (1/1) ... [2020-12-22 10:17:12,392 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:12" (1/1) ... [2020-12-22 10:17:12,810 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 10:17:12,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 10:17:12,812 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 10:17:12,812 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 10:17:12,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:12" (1/1) ... [2020-12-22 10:17:12,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:12" (1/1) ... [2020-12-22 10:17:13,010 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:12" (1/1) ... [2020-12-22 10:17:13,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:12" (1/1) ... [2020-12-22 10:17:13,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:12" (1/1) ... [2020-12-22 10:17:13,347 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:12" (1/1) ... [2020-12-22 10:17:13,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:12" (1/1) ... [2020-12-22 10:17:13,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 10:17:13,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 10:17:13,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 10:17:13,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 10:17:13,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 10:17:13,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 10:17:13,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 10:17:13,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 10:17:13,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 10:17:19,864 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 10:17:19,865 INFO L299 CfgBuilder]: Removed 40 assume(true) statements. [2020-12-22 10:17:19,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:17:19 BoogieIcfgContainer [2020-12-22 10:17:19,869 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 10:17:19,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 10:17:19,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 10:17:19,874 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 10:17:19,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:17:09" (1/3) ... [2020-12-22 10:17:19,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ede3ba0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:17:19, skipping insertion in model container [2020-12-22 10:17:19,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:12" (2/3) ... [2020-12-22 10:17:19,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ede3ba0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:17:19, skipping insertion in model container [2020-12-22 10:17:19,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:17:19" (3/3) ... [2020-12-22 10:17:19,878 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label09.c [2020-12-22 10:17:19,885 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 10:17:19,891 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 10:17:19,911 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 10:17:19,946 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 10:17:19,947 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 10:17:19,947 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 10:17:19,947 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 10:17:19,947 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 10:17:19,948 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 10:17:19,948 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 10:17:19,948 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 10:17:19,985 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states. [2020-12-22 10:17:19,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 10:17:19,996 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:17:19,997 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] [2020-12-22 10:17:19,997 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:17:20,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:17:20,004 INFO L82 PathProgramCache]: Analyzing trace with hash -949343158, now seen corresponding path program 1 times [2020-12-22 10:17:20,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:17:20,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144550311] [2020-12-22 10:17:20,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:17:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:17:20,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:17:20,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144550311] [2020-12-22 10:17:20,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:17:20,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 10:17:20,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072996194] [2020-12-22 10:17:20,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 10:17:20,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:17:20,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 10:17:20,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 10:17:20,330 INFO L87 Difference]: Start difference. First operand 945 states. Second operand 2 states. [2020-12-22 10:17:20,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:17:20,423 INFO L93 Difference]: Finished difference Result 1832 states and 3466 transitions. [2020-12-22 10:17:20,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 10:17:20,425 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 42 [2020-12-22 10:17:20,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:17:20,459 INFO L225 Difference]: With dead ends: 1832 [2020-12-22 10:17:20,459 INFO L226 Difference]: Without dead ends: 879 [2020-12-22 10:17:20,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 10:17:20,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2020-12-22 10:17:20,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 879. [2020-12-22 10:17:20,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 879 states. [2020-12-22 10:17:20,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1655 transitions. [2020-12-22 10:17:20,628 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1655 transitions. Word has length 42 [2020-12-22 10:17:20,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:17:20,629 INFO L481 AbstractCegarLoop]: Abstraction has 879 states and 1655 transitions. [2020-12-22 10:17:20,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 10:17:20,629 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1655 transitions. [2020-12-22 10:17:20,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 10:17:20,632 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:17:20,632 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] [2020-12-22 10:17:20,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 10:17:20,633 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:17:20,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:17:20,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1343709944, now seen corresponding path program 1 times [2020-12-22 10:17:20,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:17:20,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879680465] [2020-12-22 10:17:20,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:17:20,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:17:20,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:17:20,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879680465] [2020-12-22 10:17:20,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:17:20,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 10:17:20,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728233708] [2020-12-22 10:17:20,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 10:17:20,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:17:20,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 10:17:20,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 10:17:20,813 INFO L87 Difference]: Start difference. First operand 879 states and 1655 transitions. Second operand 5 states. [2020-12-22 10:17:21,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:17:21,034 INFO L93 Difference]: Finished difference Result 952 states and 1769 transitions. [2020-12-22 10:17:21,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 10:17:21,035 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-12-22 10:17:21,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:17:21,042 INFO L225 Difference]: With dead ends: 952 [2020-12-22 10:17:21,042 INFO L226 Difference]: Without dead ends: 879 [2020-12-22 10:17:21,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 10:17:21,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2020-12-22 10:17:21,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 879. [2020-12-22 10:17:21,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 879 states. [2020-12-22 10:17:21,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1605 transitions. [2020-12-22 10:17:21,081 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1605 transitions. Word has length 42 [2020-12-22 10:17:21,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:17:21,081 INFO L481 AbstractCegarLoop]: Abstraction has 879 states and 1605 transitions. [2020-12-22 10:17:21,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 10:17:21,082 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1605 transitions. [2020-12-22 10:17:21,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 10:17:21,093 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:17:21,093 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] [2020-12-22 10:17:21,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 10:17:21,095 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:17:21,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:17:21,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1083681591, now seen corresponding path program 1 times [2020-12-22 10:17:21,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:17:21,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4758143] [2020-12-22 10:17:21,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:17:21,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:17:21,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:17:21,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4758143] [2020-12-22 10:17:21,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:17:21,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:17:21,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347689191] [2020-12-22 10:17:21,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 10:17:21,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:17:21,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 10:17:21,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 10:17:21,431 INFO L87 Difference]: Start difference. First operand 879 states and 1605 transitions. Second operand 4 states. [2020-12-22 10:17:33,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:17:33,090 INFO L93 Difference]: Finished difference Result 3134 states and 5914 transitions. [2020-12-22 10:17:33,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 10:17:33,092 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-12-22 10:17:33,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:17:33,105 INFO L225 Difference]: With dead ends: 3134 [2020-12-22 10:17:33,106 INFO L226 Difference]: Without dead ends: 2381 [2020-12-22 10:17:33,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 10:17:33,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2020-12-22 10:17:33,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 2381. [2020-12-22 10:17:33,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2381 states. [2020-12-22 10:17:33,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2381 states to 2381 states and 3719 transitions. [2020-12-22 10:17:33,173 INFO L78 Accepts]: Start accepts. Automaton has 2381 states and 3719 transitions. Word has length 67 [2020-12-22 10:17:33,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:17:33,173 INFO L481 AbstractCegarLoop]: Abstraction has 2381 states and 3719 transitions. [2020-12-22 10:17:33,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 10:17:33,174 INFO L276 IsEmpty]: Start isEmpty. Operand 2381 states and 3719 transitions. [2020-12-22 10:17:33,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 10:17:33,175 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:17:33,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:17:33,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 10:17:33,176 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:17:33,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:17:33,177 INFO L82 PathProgramCache]: Analyzing trace with hash -461668761, now seen corresponding path program 1 times [2020-12-22 10:17:33,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:17:33,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634719748] [2020-12-22 10:17:33,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:17:33,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:17:33,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:17:33,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634719748] [2020-12-22 10:17:33,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:17:33,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:17:33,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843966615] [2020-12-22 10:17:33,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:17:33,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:17:33,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:17:33,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:17:33,318 INFO L87 Difference]: Start difference. First operand 2381 states and 3719 transitions. Second operand 3 states. [2020-12-22 10:17:33,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:17:33,366 INFO L93 Difference]: Finished difference Result 2513 states and 3929 transitions. [2020-12-22 10:17:33,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:17:33,367 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-22 10:17:33,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:17:33,380 INFO L225 Difference]: With dead ends: 2513 [2020-12-22 10:17:33,380 INFO L226 Difference]: Without dead ends: 2444 [2020-12-22 10:17:33,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:17:33,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2444 states. [2020-12-22 10:17:33,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2444 to 2442. [2020-12-22 10:17:33,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2442 states. [2020-12-22 10:17:33,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2442 states to 2442 states and 3817 transitions. [2020-12-22 10:17:33,448 INFO L78 Accepts]: Start accepts. Automaton has 2442 states and 3817 transitions. Word has length 91 [2020-12-22 10:17:33,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:17:33,449 INFO L481 AbstractCegarLoop]: Abstraction has 2442 states and 3817 transitions. [2020-12-22 10:17:33,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:17:33,450 INFO L276 IsEmpty]: Start isEmpty. Operand 2442 states and 3817 transitions. [2020-12-22 10:17:33,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 10:17:33,452 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:17:33,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:17:33,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 10:17:33,453 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:17:33,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:17:33,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1207251491, now seen corresponding path program 1 times [2020-12-22 10:17:33,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:17:33,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880075147] [2020-12-22 10:17:33,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:17:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:17:33,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:17:33,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880075147] [2020-12-22 10:17:33,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:17:33,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:17:33,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146863348] [2020-12-22 10:17:33,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:17:33,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:17:33,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:17:33,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:17:33,619 INFO L87 Difference]: Start difference. First operand 2442 states and 3817 transitions. Second operand 3 states. [2020-12-22 10:17:33,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:17:33,689 INFO L93 Difference]: Finished difference Result 2690 states and 4213 transitions. [2020-12-22 10:17:33,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:17:33,689 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-22 10:17:33,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:17:33,706 INFO L225 Difference]: With dead ends: 2690 [2020-12-22 10:17:33,707 INFO L226 Difference]: Without dead ends: 2560 [2020-12-22 10:17:33,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:17:33,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2560 states. [2020-12-22 10:17:33,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2560 to 2558. [2020-12-22 10:17:33,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2558 states. [2020-12-22 10:17:33,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2558 states to 2558 states and 4002 transitions. [2020-12-22 10:17:33,786 INFO L78 Accepts]: Start accepts. Automaton has 2558 states and 4002 transitions. Word has length 91 [2020-12-22 10:17:33,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:17:33,787 INFO L481 AbstractCegarLoop]: Abstraction has 2558 states and 4002 transitions. [2020-12-22 10:17:33,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:17:33,787 INFO L276 IsEmpty]: Start isEmpty. Operand 2558 states and 4002 transitions. [2020-12-22 10:17:33,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 10:17:33,792 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:17:33,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:17:33,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 10:17:33,793 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:17:33,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:17:33,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1147684947, now seen corresponding path program 1 times [2020-12-22 10:17:33,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:17:33,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365986214] [2020-12-22 10:17:33,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:17:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:17:33,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:17:33,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365986214] [2020-12-22 10:17:33,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:17:33,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:17:33,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924807652] [2020-12-22 10:17:33,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:17:33,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:17:33,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:17:33,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:17:33,920 INFO L87 Difference]: Start difference. First operand 2558 states and 4002 transitions. Second operand 3 states. [2020-12-22 10:17:33,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:17:33,988 INFO L93 Difference]: Finished difference Result 3026 states and 4748 transitions. [2020-12-22 10:17:33,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:17:33,989 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-22 10:17:33,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:17:34,007 INFO L225 Difference]: With dead ends: 3026 [2020-12-22 10:17:34,007 INFO L226 Difference]: Without dead ends: 2780 [2020-12-22 10:17:34,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:17:34,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2780 states. [2020-12-22 10:17:34,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2780 to 2778. [2020-12-22 10:17:34,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2778 states. [2020-12-22 10:17:34,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2778 states to 2778 states and 4350 transitions. [2020-12-22 10:17:34,092 INFO L78 Accepts]: Start accepts. Automaton has 2778 states and 4350 transitions. Word has length 91 [2020-12-22 10:17:34,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:17:34,094 INFO L481 AbstractCegarLoop]: Abstraction has 2778 states and 4350 transitions. [2020-12-22 10:17:34,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:17:34,094 INFO L276 IsEmpty]: Start isEmpty. Operand 2778 states and 4350 transitions. [2020-12-22 10:17:34,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 10:17:34,099 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:17:34,100 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:17:34,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 10:17:34,100 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:17:34,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:17:34,104 INFO L82 PathProgramCache]: Analyzing trace with hash -446599735, now seen corresponding path program 1 times [2020-12-22 10:17:34,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:17:34,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416019308] [2020-12-22 10:17:34,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:17:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:17:34,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:17:34,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416019308] [2020-12-22 10:17:34,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:17:34,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:17:34,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945281032] [2020-12-22 10:17:34,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:17:34,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:17:34,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:17:34,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:17:34,233 INFO L87 Difference]: Start difference. First operand 2778 states and 4350 transitions. Second operand 3 states. [2020-12-22 10:17:34,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:17:34,303 INFO L93 Difference]: Finished difference Result 3662 states and 5752 transitions. [2020-12-22 10:17:34,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:17:34,304 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-22 10:17:34,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:17:34,321 INFO L225 Difference]: With dead ends: 3662 [2020-12-22 10:17:34,321 INFO L226 Difference]: Without dead ends: 3196 [2020-12-22 10:17:34,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:17:34,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3196 states. [2020-12-22 10:17:34,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3196 to 3194. [2020-12-22 10:17:34,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3194 states. [2020-12-22 10:17:34,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3194 states to 3194 states and 5002 transitions. [2020-12-22 10:17:34,427 INFO L78 Accepts]: Start accepts. Automaton has 3194 states and 5002 transitions. Word has length 91 [2020-12-22 10:17:34,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:17:34,428 INFO L481 AbstractCegarLoop]: Abstraction has 3194 states and 5002 transitions. [2020-12-22 10:17:34,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:17:34,428 INFO L276 IsEmpty]: Start isEmpty. Operand 3194 states and 5002 transitions. [2020-12-22 10:17:34,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 10:17:34,429 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:17:34,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:17:34,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 10:17:34,430 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:17:34,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:17:34,430 INFO L82 PathProgramCache]: Analyzing trace with hash -108806593, now seen corresponding path program 1 times [2020-12-22 10:17:34,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:17:34,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261058997] [2020-12-22 10:17:34,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:17:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:17:34,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:17:34,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261058997] [2020-12-22 10:17:34,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:17:34,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:17:34,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412218262] [2020-12-22 10:17:34,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:17:34,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:17:34,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:17:34,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:17:34,514 INFO L87 Difference]: Start difference. First operand 3194 states and 5002 transitions. Second operand 3 states. [2020-12-22 10:17:34,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:17:34,637 INFO L93 Difference]: Finished difference Result 4862 states and 7628 transitions. [2020-12-22 10:17:34,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:17:34,638 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-22 10:17:34,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:17:34,660 INFO L225 Difference]: With dead ends: 4862 [2020-12-22 10:17:34,660 INFO L226 Difference]: Without dead ends: 3980 [2020-12-22 10:17:34,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:17:34,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3980 states. [2020-12-22 10:17:34,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3980 to 3978. [2020-12-22 10:17:34,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3978 states. [2020-12-22 10:17:34,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3978 states to 3978 states and 6218 transitions. [2020-12-22 10:17:34,821 INFO L78 Accepts]: Start accepts. Automaton has 3978 states and 6218 transitions. Word has length 91 [2020-12-22 10:17:34,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:17:34,821 INFO L481 AbstractCegarLoop]: Abstraction has 3978 states and 6218 transitions. [2020-12-22 10:17:34,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:17:34,822 INFO L276 IsEmpty]: Start isEmpty. Operand 3978 states and 6218 transitions. [2020-12-22 10:17:34,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 10:17:34,823 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:17:34,823 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:17:34,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 10:17:34,824 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:17:34,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:17:34,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1109178805, now seen corresponding path program 1 times [2020-12-22 10:17:34,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:17:34,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202150052] [2020-12-22 10:17:34,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:17:34,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:17:35,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:17:35,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202150052] [2020-12-22 10:17:35,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:17:35,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 10:17:35,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15506816] [2020-12-22 10:17:35,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 10:17:35,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:17:35,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 10:17:35,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:17:35,031 INFO L87 Difference]: Start difference. First operand 3978 states and 6218 transitions. Second operand 9 states. [2020-12-22 10:17:36,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:17:36,639 INFO L93 Difference]: Finished difference Result 27302 states and 42744 transitions. [2020-12-22 10:17:36,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 10:17:36,640 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-12-22 10:17:36,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:17:36,744 INFO L225 Difference]: With dead ends: 27302 [2020-12-22 10:17:36,744 INFO L226 Difference]: Without dead ends: 25636 [2020-12-22 10:17:36,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2020-12-22 10:17:36,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25636 states. [2020-12-22 10:17:37,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25636 to 5642. [2020-12-22 10:17:37,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5642 states. [2020-12-22 10:17:37,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5642 states to 5642 states and 8762 transitions. [2020-12-22 10:17:37,336 INFO L78 Accepts]: Start accepts. Automaton has 5642 states and 8762 transitions. Word has length 91 [2020-12-22 10:17:37,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:17:37,337 INFO L481 AbstractCegarLoop]: Abstraction has 5642 states and 8762 transitions. [2020-12-22 10:17:37,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 10:17:37,337 INFO L276 IsEmpty]: Start isEmpty. Operand 5642 states and 8762 transitions. [2020-12-22 10:17:37,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 10:17:37,338 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:17:37,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:17:37,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 10:17:37,339 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:17:37,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:17:37,339 INFO L82 PathProgramCache]: Analyzing trace with hash -646747483, now seen corresponding path program 1 times [2020-12-22 10:17:37,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:17:37,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182970330] [2020-12-22 10:17:37,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:17:37,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:17:37,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:17:37,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182970330] [2020-12-22 10:17:37,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:17:37,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:17:37,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681139726] [2020-12-22 10:17:37,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:17:37,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:17:37,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:17:37,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:17:37,445 INFO L87 Difference]: Start difference. First operand 5642 states and 8762 transitions. Second operand 3 states. [2020-12-22 10:17:37,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:17:37,985 INFO L93 Difference]: Finished difference Result 11950 states and 18460 transitions. [2020-12-22 10:17:37,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:17:37,986 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 93 [2020-12-22 10:17:37,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:17:38,007 INFO L225 Difference]: With dead ends: 11950 [2020-12-22 10:17:38,007 INFO L226 Difference]: Without dead ends: 8620 [2020-12-22 10:17:38,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:17:38,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8620 states. [2020-12-22 10:17:38,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8620 to 8554. [2020-12-22 10:17:38,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8554 states. [2020-12-22 10:17:38,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8554 states to 8554 states and 13082 transitions. [2020-12-22 10:17:38,678 INFO L78 Accepts]: Start accepts. Automaton has 8554 states and 13082 transitions. Word has length 93 [2020-12-22 10:17:38,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:17:38,679 INFO L481 AbstractCegarLoop]: Abstraction has 8554 states and 13082 transitions. [2020-12-22 10:17:38,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:17:38,679 INFO L276 IsEmpty]: Start isEmpty. Operand 8554 states and 13082 transitions. [2020-12-22 10:17:38,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 10:17:38,680 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:17:38,681 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:17:38,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 10:17:38,681 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:17:38,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:17:38,682 INFO L82 PathProgramCache]: Analyzing trace with hash -580253971, now seen corresponding path program 1 times [2020-12-22 10:17:38,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:17:38,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436064080] [2020-12-22 10:17:38,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:17:38,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:17:39,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:17:39,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436064080] [2020-12-22 10:17:39,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:17:39,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 10:17:39,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242427813] [2020-12-22 10:17:39,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 10:17:39,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:17:39,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 10:17:39,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:17:39,059 INFO L87 Difference]: Start difference. First operand 8554 states and 13082 transitions. Second operand 9 states. [2020-12-22 10:17:39,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:17:39,986 INFO L93 Difference]: Finished difference Result 14798 states and 22556 transitions. [2020-12-22 10:17:39,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 10:17:39,986 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-12-22 10:17:39,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:17:40,007 INFO L225 Difference]: With dead ends: 14798 [2020-12-22 10:17:40,008 INFO L226 Difference]: Without dead ends: 8556 [2020-12-22 10:17:40,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2020-12-22 10:17:40,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8556 states. [2020-12-22 10:17:40,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8556 to 8554. [2020-12-22 10:17:40,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8554 states. [2020-12-22 10:17:40,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8554 states to 8554 states and 13018 transitions. [2020-12-22 10:17:40,534 INFO L78 Accepts]: Start accepts. Automaton has 8554 states and 13018 transitions. Word has length 93 [2020-12-22 10:17:40,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:17:40,535 INFO L481 AbstractCegarLoop]: Abstraction has 8554 states and 13018 transitions. [2020-12-22 10:17:40,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 10:17:40,535 INFO L276 IsEmpty]: Start isEmpty. Operand 8554 states and 13018 transitions. [2020-12-22 10:17:40,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 10:17:40,536 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:17:40,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:17:40,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 10:17:40,537 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:17:40,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:17:40,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1326262359, now seen corresponding path program 1 times [2020-12-22 10:17:40,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:17:40,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968089046] [2020-12-22 10:17:40,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:17:40,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:17:40,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:17:40,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968089046] [2020-12-22 10:17:40,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:17:40,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:17:40,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881837822] [2020-12-22 10:17:40,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:17:40,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:17:40,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:17:40,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:17:40,608 INFO L87 Difference]: Start difference. First operand 8554 states and 13018 transitions. Second operand 3 states. [2020-12-22 10:17:41,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:17:41,423 INFO L93 Difference]: Finished difference Result 20270 states and 30556 transitions. [2020-12-22 10:17:41,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:17:41,424 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 93 [2020-12-22 10:17:41,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:17:41,456 INFO L225 Difference]: With dead ends: 20270 [2020-12-22 10:17:41,456 INFO L226 Difference]: Without dead ends: 14028 [2020-12-22 10:17:41,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:17:41,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14028 states. [2020-12-22 10:17:42,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14028 to 14026. [2020-12-22 10:17:42,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14026 states. [2020-12-22 10:17:42,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14026 states to 14026 states and 21018 transitions. [2020-12-22 10:17:42,385 INFO L78 Accepts]: Start accepts. Automaton has 14026 states and 21018 transitions. Word has length 93 [2020-12-22 10:17:42,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:17:42,385 INFO L481 AbstractCegarLoop]: Abstraction has 14026 states and 21018 transitions. [2020-12-22 10:17:42,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:17:42,386 INFO L276 IsEmpty]: Start isEmpty. Operand 14026 states and 21018 transitions. [2020-12-22 10:17:42,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 10:17:42,387 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:17:42,387 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:17:42,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 10:17:42,388 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:17:42,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:17:42,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1222726774, now seen corresponding path program 1 times [2020-12-22 10:17:42,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:17:42,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547016981] [2020-12-22 10:17:42,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:17:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:17:42,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:17:42,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547016981] [2020-12-22 10:17:42,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:17:42,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:17:42,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878916664] [2020-12-22 10:17:42,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:17:42,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:17:42,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:17:42,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:17:42,531 INFO L87 Difference]: Start difference. First operand 14026 states and 21018 transitions. Second operand 8 states. [2020-12-22 10:17:43,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:17:43,971 INFO L93 Difference]: Finished difference Result 22768 states and 33802 transitions. [2020-12-22 10:17:43,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:17:43,971 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-12-22 10:17:43,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:17:44,019 INFO L225 Difference]: With dead ends: 22768 [2020-12-22 10:17:44,020 INFO L226 Difference]: Without dead ends: 22766 [2020-12-22 10:17:44,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 10:17:44,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22766 states. [2020-12-22 10:17:44,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22766 to 14410. [2020-12-22 10:17:44,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14410 states. [2020-12-22 10:17:44,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14410 states to 14410 states and 21338 transitions. [2020-12-22 10:17:44,957 INFO L78 Accepts]: Start accepts. Automaton has 14410 states and 21338 transitions. Word has length 94 [2020-12-22 10:17:44,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:17:44,958 INFO L481 AbstractCegarLoop]: Abstraction has 14410 states and 21338 transitions. [2020-12-22 10:17:44,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:17:44,958 INFO L276 IsEmpty]: Start isEmpty. Operand 14410 states and 21338 transitions. [2020-12-22 10:17:44,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 10:17:44,959 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:17:44,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:17:44,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 10:17:44,960 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:17:44,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:17:44,961 INFO L82 PathProgramCache]: Analyzing trace with hash -362720764, now seen corresponding path program 1 times [2020-12-22 10:17:44,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:17:44,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164693944] [2020-12-22 10:17:44,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:17:44,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:17:45,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:17:45,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164693944] [2020-12-22 10:17:45,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:17:45,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:17:45,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139664326] [2020-12-22 10:17:45,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:17:45,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:17:45,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:17:45,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:17:45,028 INFO L87 Difference]: Start difference. First operand 14410 states and 21338 transitions. Second operand 3 states. [2020-12-22 10:17:46,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:17:46,081 INFO L93 Difference]: Finished difference Result 26705 states and 39520 transitions. [2020-12-22 10:17:46,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:17:46,082 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-12-22 10:17:46,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:17:46,127 INFO L225 Difference]: With dead ends: 26705 [2020-12-22 10:17:46,128 INFO L226 Difference]: Without dead ends: 20046 [2020-12-22 10:17:46,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:17:46,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20046 states. [2020-12-22 10:17:47,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20046 to 20044. [2020-12-22 10:17:47,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20044 states. [2020-12-22 10:17:47,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20044 states to 20044 states and 29468 transitions. [2020-12-22 10:17:47,820 INFO L78 Accepts]: Start accepts. Automaton has 20044 states and 29468 transitions. Word has length 95 [2020-12-22 10:17:47,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:17:47,820 INFO L481 AbstractCegarLoop]: Abstraction has 20044 states and 29468 transitions. [2020-12-22 10:17:47,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:17:47,820 INFO L276 IsEmpty]: Start isEmpty. Operand 20044 states and 29468 transitions. [2020-12-22 10:17:47,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-12-22 10:17:47,831 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:17:47,831 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:17:47,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 10:17:47,832 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:17:47,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:17:47,832 INFO L82 PathProgramCache]: Analyzing trace with hash 388249298, now seen corresponding path program 1 times [2020-12-22 10:17:47,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:17:47,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386794882] [2020-12-22 10:17:47,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:17:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:17:48,037 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-22 10:17:48,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386794882] [2020-12-22 10:17:48,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:17:48,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 10:17:48,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195206760] [2020-12-22 10:17:48,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 10:17:48,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:17:48,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 10:17:48,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:17:48,040 INFO L87 Difference]: Start difference. First operand 20044 states and 29468 transitions. Second operand 9 states. [2020-12-22 10:17:55,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:17:55,825 INFO L93 Difference]: Finished difference Result 147612 states and 215332 transitions. [2020-12-22 10:17:55,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 10:17:55,826 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 129 [2020-12-22 10:17:55,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:17:56,239 INFO L225 Difference]: With dead ends: 147612 [2020-12-22 10:17:56,239 INFO L226 Difference]: Without dead ends: 129882 [2020-12-22 10:17:56,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-12-22 10:17:56,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129882 states. [2020-12-22 10:17:59,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129882 to 37772. [2020-12-22 10:17:59,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37772 states. [2020-12-22 10:17:59,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37772 states to 37772 states and 55132 transitions. [2020-12-22 10:17:59,916 INFO L78 Accepts]: Start accepts. Automaton has 37772 states and 55132 transitions. Word has length 129 [2020-12-22 10:17:59,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:17:59,917 INFO L481 AbstractCegarLoop]: Abstraction has 37772 states and 55132 transitions. [2020-12-22 10:17:59,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 10:17:59,917 INFO L276 IsEmpty]: Start isEmpty. Operand 37772 states and 55132 transitions. [2020-12-22 10:17:59,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-12-22 10:17:59,936 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:17:59,937 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:17:59,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 10:17:59,939 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:17:59,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:17:59,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1380533518, now seen corresponding path program 1 times [2020-12-22 10:17:59,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:17:59,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097915444] [2020-12-22 10:17:59,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:17:59,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:18:00,142 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-22 10:18:00,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097915444] [2020-12-22 10:18:00,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:18:00,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 10:18:00,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005790172] [2020-12-22 10:18:00,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 10:18:00,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:18:00,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 10:18:00,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:18:00,147 INFO L87 Difference]: Start difference. First operand 37772 states and 55132 transitions. Second operand 9 states. [2020-12-22 10:18:10,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:18:10,055 INFO L93 Difference]: Finished difference Result 165340 states and 240996 transitions. [2020-12-22 10:18:10,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 10:18:10,056 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 129 [2020-12-22 10:18:10,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:18:10,466 INFO L225 Difference]: With dead ends: 165340 [2020-12-22 10:18:10,466 INFO L226 Difference]: Without dead ends: 147610 [2020-12-22 10:18:10,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-12-22 10:18:10,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147610 states. [2020-12-22 10:18:15,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147610 to 64396. [2020-12-22 10:18:15,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64396 states. [2020-12-22 10:18:15,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64396 states to 64396 states and 93468 transitions. [2020-12-22 10:18:15,971 INFO L78 Accepts]: Start accepts. Automaton has 64396 states and 93468 transitions. Word has length 129 [2020-12-22 10:18:15,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:18:15,972 INFO L481 AbstractCegarLoop]: Abstraction has 64396 states and 93468 transitions. [2020-12-22 10:18:15,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 10:18:15,973 INFO L276 IsEmpty]: Start isEmpty. Operand 64396 states and 93468 transitions. [2020-12-22 10:18:15,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-12-22 10:18:15,994 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:18:15,994 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:18:15,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 10:18:15,995 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:18:15,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:18:15,995 INFO L82 PathProgramCache]: Analyzing trace with hash -248893678, now seen corresponding path program 1 times [2020-12-22 10:18:15,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:18:15,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336093637] [2020-12-22 10:18:15,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:18:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:18:16,171 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 10:18:16,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336093637] [2020-12-22 10:18:16,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:18:16,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 10:18:16,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747639808] [2020-12-22 10:18:16,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 10:18:16,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:18:16,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 10:18:16,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:18:16,173 INFO L87 Difference]: Start difference. First operand 64396 states and 93468 transitions. Second operand 9 states. [2020-12-22 10:18:27,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:18:27,316 INFO L93 Difference]: Finished difference Result 183068 states and 266660 transitions. [2020-12-22 10:18:27,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 10:18:27,317 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 129 [2020-12-22 10:18:27,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:18:27,794 INFO L225 Difference]: With dead ends: 183068 [2020-12-22 10:18:27,795 INFO L226 Difference]: Without dead ends: 165338 [2020-12-22 10:18:27,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-12-22 10:18:28,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165338 states. [2020-12-22 10:18:34,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165338 to 82124. [2020-12-22 10:18:34,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82124 states. [2020-12-22 10:18:34,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82124 states to 82124 states and 119132 transitions. [2020-12-22 10:18:34,908 INFO L78 Accepts]: Start accepts. Automaton has 82124 states and 119132 transitions. Word has length 129 [2020-12-22 10:18:34,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:18:34,909 INFO L481 AbstractCegarLoop]: Abstraction has 82124 states and 119132 transitions. [2020-12-22 10:18:34,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 10:18:34,909 INFO L276 IsEmpty]: Start isEmpty. Operand 82124 states and 119132 transitions. [2020-12-22 10:18:34,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-12-22 10:18:34,939 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:18:34,940 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:18:34,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 10:18:34,940 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:18:34,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:18:34,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1484352718, now seen corresponding path program 1 times [2020-12-22 10:18:34,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:18:34,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896495288] [2020-12-22 10:18:34,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:18:35,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:18:35,204 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 10:18:35,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896495288] [2020-12-22 10:18:35,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:18:35,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 10:18:35,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517194315] [2020-12-22 10:18:35,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 10:18:35,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:18:35,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 10:18:35,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:18:35,207 INFO L87 Difference]: Start difference. First operand 82124 states and 119132 transitions. Second operand 9 states. [2020-12-22 10:18:48,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:18:48,707 INFO L93 Difference]: Finished difference Result 200796 states and 292324 transitions. [2020-12-22 10:18:48,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 10:18:48,708 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 129 [2020-12-22 10:18:48,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:18:49,140 INFO L225 Difference]: With dead ends: 200796 [2020-12-22 10:18:49,141 INFO L226 Difference]: Without dead ends: 183066 [2020-12-22 10:18:49,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-12-22 10:18:49,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183066 states. [2020-12-22 10:18:57,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183066 to 99852. [2020-12-22 10:18:57,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99852 states. [2020-12-22 10:18:58,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99852 states to 99852 states and 144796 transitions. [2020-12-22 10:18:58,006 INFO L78 Accepts]: Start accepts. Automaton has 99852 states and 144796 transitions. Word has length 129 [2020-12-22 10:18:58,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:18:58,007 INFO L481 AbstractCegarLoop]: Abstraction has 99852 states and 144796 transitions. [2020-12-22 10:18:58,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 10:18:58,007 INFO L276 IsEmpty]: Start isEmpty. Operand 99852 states and 144796 transitions. [2020-12-22 10:18:58,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-12-22 10:18:58,020 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:18:58,020 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:18:58,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 10:18:58,020 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:18:58,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:18:58,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1389619026, now seen corresponding path program 1 times [2020-12-22 10:18:58,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:18:58,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279940876] [2020-12-22 10:18:58,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:18:58,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:18:58,233 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 10:18:58,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279940876] [2020-12-22 10:18:58,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:18:58,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 10:18:58,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557012974] [2020-12-22 10:18:58,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 10:18:58,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:18:58,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 10:18:58,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:18:58,237 INFO L87 Difference]: Start difference. First operand 99852 states and 144796 transitions. Second operand 9 states. [2020-12-22 10:19:15,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:19:15,038 INFO L93 Difference]: Finished difference Result 218524 states and 317988 transitions. [2020-12-22 10:19:15,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 10:19:15,039 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 129 [2020-12-22 10:19:15,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:19:15,501 INFO L225 Difference]: With dead ends: 218524 [2020-12-22 10:19:15,501 INFO L226 Difference]: Without dead ends: 200794 [2020-12-22 10:19:15,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-12-22 10:19:15,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200794 states. [2020-12-22 10:19:26,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200794 to 117580. [2020-12-22 10:19:26,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117580 states. [2020-12-22 10:19:26,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117580 states to 117580 states and 170460 transitions. [2020-12-22 10:19:26,495 INFO L78 Accepts]: Start accepts. Automaton has 117580 states and 170460 transitions. Word has length 129 [2020-12-22 10:19:26,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:19:26,495 INFO L481 AbstractCegarLoop]: Abstraction has 117580 states and 170460 transitions. [2020-12-22 10:19:26,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 10:19:26,495 INFO L276 IsEmpty]: Start isEmpty. Operand 117580 states and 170460 transitions. [2020-12-22 10:19:26,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-12-22 10:19:26,512 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:19:26,512 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:19:26,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 10:19:26,512 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:19:26,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:19:26,513 INFO L82 PathProgramCache]: Analyzing trace with hash 375573628, now seen corresponding path program 1 times [2020-12-22 10:19:26,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:19:26,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353530454] [2020-12-22 10:19:26,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:19:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:19:26,711 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 10:19:26,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353530454] [2020-12-22 10:19:26,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:19:26,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 10:19:26,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496268528] [2020-12-22 10:19:26,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 10:19:26,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:19:26,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 10:19:26,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:19:26,713 INFO L87 Difference]: Start difference. First operand 117580 states and 170460 transitions. Second operand 9 states. [2020-12-22 10:19:46,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:19:46,605 INFO L93 Difference]: Finished difference Result 236252 states and 343652 transitions. [2020-12-22 10:19:46,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 10:19:46,605 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 129 [2020-12-22 10:19:46,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:19:47,067 INFO L225 Difference]: With dead ends: 236252 [2020-12-22 10:19:47,067 INFO L226 Difference]: Without dead ends: 218522 [2020-12-22 10:19:47,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-12-22 10:19:47,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218522 states. [2020-12-22 10:20:00,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218522 to 135308. [2020-12-22 10:20:00,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135308 states. [2020-12-22 10:20:01,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135308 states to 135308 states and 196124 transitions. [2020-12-22 10:20:01,127 INFO L78 Accepts]: Start accepts. Automaton has 135308 states and 196124 transitions. Word has length 129 [2020-12-22 10:20:01,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:20:01,128 INFO L481 AbstractCegarLoop]: Abstraction has 135308 states and 196124 transitions. [2020-12-22 10:20:01,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 10:20:01,128 INFO L276 IsEmpty]: Start isEmpty. Operand 135308 states and 196124 transitions. [2020-12-22 10:20:01,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-22 10:20:01,149 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:20:01,149 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:20:01,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 10:20:01,149 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:20:01,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:20:01,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1903775542, now seen corresponding path program 1 times [2020-12-22 10:20:01,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:20:01,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666131484] [2020-12-22 10:20:01,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:20:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:20:01,260 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:20:01,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666131484] [2020-12-22 10:20:01,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:20:01,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:20:01,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997392435] [2020-12-22 10:20:01,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:20:01,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:20:01,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:20:01,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:20:01,265 INFO L87 Difference]: Start difference. First operand 135308 states and 196124 transitions. Second operand 3 states. [2020-12-22 10:20:11,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:20:11,131 INFO L93 Difference]: Finished difference Result 227509 states and 330571 transitions. [2020-12-22 10:20:11,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:20:11,132 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 131 [2020-12-22 10:20:11,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:20:11,267 INFO L225 Difference]: With dead ends: 227509 [2020-12-22 10:20:11,267 INFO L226 Difference]: Without dead ends: 94515 [2020-12-22 10:20:11,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:20:11,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94515 states. [2020-12-22 10:20:20,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94515 to 94513. [2020-12-22 10:20:20,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94513 states. [2020-12-22 10:20:20,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94513 states to 94513 states and 137096 transitions. [2020-12-22 10:20:20,686 INFO L78 Accepts]: Start accepts. Automaton has 94513 states and 137096 transitions. Word has length 131 [2020-12-22 10:20:20,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:20:20,686 INFO L481 AbstractCegarLoop]: Abstraction has 94513 states and 137096 transitions. [2020-12-22 10:20:20,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:20:20,686 INFO L276 IsEmpty]: Start isEmpty. Operand 94513 states and 137096 transitions. [2020-12-22 10:20:20,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-22 10:20:20,698 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:20:20,698 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:20:20,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 10:20:20,698 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:20:20,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:20:20,699 INFO L82 PathProgramCache]: Analyzing trace with hash -800734569, now seen corresponding path program 1 times [2020-12-22 10:20:20,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:20:20,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063978316] [2020-12-22 10:20:20,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:20:20,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:20:21,073 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 10:20:21,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063978316] [2020-12-22 10:20:21,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:20:21,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 10:20:21,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510394701] [2020-12-22 10:20:21,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 10:20:21,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:20:21,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 10:20:21,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:20:21,080 INFO L87 Difference]: Start difference. First operand 94513 states and 137096 transitions. Second operand 9 states. [2020-12-22 10:20:38,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:20:38,558 INFO L93 Difference]: Finished difference Result 180545 states and 262544 transitions. [2020-12-22 10:20:38,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 10:20:38,562 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 131 [2020-12-22 10:20:38,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:20:38,943 INFO L225 Difference]: With dead ends: 180545 [2020-12-22 10:20:38,943 INFO L226 Difference]: Without dead ends: 168255 [2020-12-22 10:20:38,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-12-22 10:20:39,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168255 states. [2020-12-22 10:20:50,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168255 to 106801. [2020-12-22 10:20:50,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106801 states. [2020-12-22 10:20:50,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106801 states to 106801 states and 154888 transitions. [2020-12-22 10:20:50,380 INFO L78 Accepts]: Start accepts. Automaton has 106801 states and 154888 transitions. Word has length 131 [2020-12-22 10:20:50,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:20:50,380 INFO L481 AbstractCegarLoop]: Abstraction has 106801 states and 154888 transitions. [2020-12-22 10:20:50,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 10:20:50,380 INFO L276 IsEmpty]: Start isEmpty. Operand 106801 states and 154888 transitions. [2020-12-22 10:20:50,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-12-22 10:20:50,393 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:20:50,394 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:20:50,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 10:20:50,394 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:20:50,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:20:50,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1473709455, now seen corresponding path program 1 times [2020-12-22 10:20:50,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:20:50,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324087910] [2020-12-22 10:20:50,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:20:50,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:20:50,479 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:20:50,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324087910] [2020-12-22 10:20:50,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:20:50,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:20:50,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999616383] [2020-12-22 10:20:50,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:20:50,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:20:50,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:20:50,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:20:50,482 INFO L87 Difference]: Start difference. First operand 106801 states and 154888 transitions. Second operand 3 states. [2020-12-22 10:20:56,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:20:56,539 INFO L93 Difference]: Finished difference Result 159029 states and 230506 transitions. [2020-12-22 10:20:56,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:20:56,539 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 132 [2020-12-22 10:20:56,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:20:56,594 INFO L225 Difference]: With dead ends: 159029 [2020-12-22 10:20:56,595 INFO L226 Difference]: Without dead ends: 54579 [2020-12-22 10:20:56,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:20:56,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54579 states.