/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/product-lines/elevator_spec3_product25.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:10:38,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:10:38,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:10:38,905 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:10:38,906 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:10:38,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:10:38,915 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:10:38,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:10:38,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:10:38,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:10:38,926 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:10:38,930 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:10:38,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:10:38,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:10:38,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:10:38,940 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:10:38,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:10:38,944 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:10:38,947 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:10:38,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:10:38,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:10:38,960 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:10:38,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:10:38,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:10:38,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:10:38,973 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:10:38,974 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:10:38,978 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:10:38,980 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:10:38,981 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:10:38,981 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:10:38,982 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:10:38,982 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:10:38,983 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:10:38,984 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:10:38,984 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:10:38,985 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:10:39,041 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:10:39,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:10:39,044 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:10:39,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:10:39,045 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:10:39,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:10:39,045 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:10:39,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:10:39,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:10:39,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:10:39,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:10:39,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:10:39,048 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:10:39,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:10:39,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:10:39,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:10:39,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:10:39,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:10:39,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:10:39,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:10:39,049 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:10:39,049 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:10:39,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:10:39,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:10:39,050 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:10:39,050 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:10:39,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:10:39,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:10:39,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:10:39,464 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:10:39,465 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:10:39,466 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product25.cil.c [2020-12-22 06:10:39,536 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b82cdd856/0bb96ac3463d4507833ea7b2798b65e1/FLAG8a8ef3bd1 [2020-12-22 06:10:40,260 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:10:40,261 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product25.cil.c [2020-12-22 06:10:40,292 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b82cdd856/0bb96ac3463d4507833ea7b2798b65e1/FLAG8a8ef3bd1 [2020-12-22 06:10:40,450 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b82cdd856/0bb96ac3463d4507833ea7b2798b65e1 [2020-12-22 06:10:40,459 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:10:40,464 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:10:40,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:10:40,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:10:40,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:10:40,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:10:40" (1/1) ... [2020-12-22 06:10:40,475 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b3bf3fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:40, skipping insertion in model container [2020-12-22 06:10:40,475 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:10:40" (1/1) ... [2020-12-22 06:10:40,484 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:10:40,581 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:10:40,922 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/product-lines/elevator_spec3_product25.cil.c[27313,27326] [2020-12-22 06:10:41,152 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:10:41,181 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:10:41,327 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/product-lines/elevator_spec3_product25.cil.c[27313,27326] [2020-12-22 06:10:41,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:10:41,473 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:10:41,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:41 WrapperNode [2020-12-22 06:10:41,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:10:41,476 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:10:41,476 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:10:41,476 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:10:41,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:41" (1/1) ... [2020-12-22 06:10:41,517 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:41" (1/1) ... [2020-12-22 06:10:41,867 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:10:41,870 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:10:41,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:10:41,871 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:10:41,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:41" (1/1) ... [2020-12-22 06:10:41,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:41" (1/1) ... [2020-12-22 06:10:41,957 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:41" (1/1) ... [2020-12-22 06:10:41,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:41" (1/1) ... [2020-12-22 06:10:42,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:41" (1/1) ... [2020-12-22 06:10:42,502 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:41" (1/1) ... [2020-12-22 06:10:42,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:41" (1/1) ... [2020-12-22 06:10:42,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:10:42,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:10:42,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:10:42,607 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:10:42,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:41" (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 06:10:42,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:10:42,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:10:42,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:10:42,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:10:54,143 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:10:54,146 INFO L299 CfgBuilder]: Removed 1467 assume(true) statements. [2020-12-22 06:10:54,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:10:54 BoogieIcfgContainer [2020-12-22 06:10:54,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:10:54,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:10:54,159 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:10:54,163 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:10:54,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:10:40" (1/3) ... [2020-12-22 06:10:54,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c74c068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:10:54, skipping insertion in model container [2020-12-22 06:10:54,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:41" (2/3) ... [2020-12-22 06:10:54,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c74c068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:10:54, skipping insertion in model container [2020-12-22 06:10:54,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:10:54" (3/3) ... [2020-12-22 06:10:54,168 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product25.cil.c [2020-12-22 06:10:54,175 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:10:54,185 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-12-22 06:10:54,208 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-12-22 06:10:54,259 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:10:54,260 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:10:54,260 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:10:54,260 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:10:54,260 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:10:54,260 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:10:54,260 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:10:54,260 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:10:54,358 INFO L276 IsEmpty]: Start isEmpty. Operand 6343 states. [2020-12-22 06:10:54,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 06:10:54,384 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:10:54,385 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] [2020-12-22 06:10:54,385 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:10:54,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:10:54,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1445769567, now seen corresponding path program 1 times [2020-12-22 06:10:54,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:10:54,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951043414] [2020-12-22 06:10:54,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:10:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:10:54,978 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 06:10:54,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951043414] [2020-12-22 06:10:54,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:10:54,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:10:54,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167028226] [2020-12-22 06:10:54,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:10:54,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:10:55,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:10:55,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:10:55,009 INFO L87 Difference]: Start difference. First operand 6343 states. Second operand 4 states. [2020-12-22 06:10:55,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:10:55,929 INFO L93 Difference]: Finished difference Result 25197 states and 47509 transitions. [2020-12-22 06:10:55,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:10:55,931 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-12-22 06:10:55,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:10:56,098 INFO L225 Difference]: With dead ends: 25197 [2020-12-22 06:10:56,098 INFO L226 Difference]: Without dead ends: 18867 [2020-12-22 06:10:56,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 06:10:56,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18867 states. [2020-12-22 06:10:56,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18867 to 6351. [2020-12-22 06:10:56,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6351 states. [2020-12-22 06:10:56,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6351 states to 6351 states and 11953 transitions. [2020-12-22 06:10:56,564 INFO L78 Accepts]: Start accepts. Automaton has 6351 states and 11953 transitions. Word has length 41 [2020-12-22 06:10:56,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:10:56,565 INFO L481 AbstractCegarLoop]: Abstraction has 6351 states and 11953 transitions. [2020-12-22 06:10:56,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:10:56,565 INFO L276 IsEmpty]: Start isEmpty. Operand 6351 states and 11953 transitions. [2020-12-22 06:10:56,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 06:10:56,570 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:10:56,570 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 06:10:56,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:10:56,572 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:10:56,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:10:56,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1065043074, now seen corresponding path program 1 times [2020-12-22 06:10:56,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:10:56,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278029869] [2020-12-22 06:10:56,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:10:56,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:10:56,736 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 06:10:56,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278029869] [2020-12-22 06:10:56,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:10:56,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:10:56,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395457542] [2020-12-22 06:10:56,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:10:56,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:10:56,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:10:56,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:10:56,743 INFO L87 Difference]: Start difference. First operand 6351 states and 11953 transitions. Second operand 3 states. [2020-12-22 06:10:56,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:10:56,923 INFO L93 Difference]: Finished difference Result 12618 states and 23753 transitions. [2020-12-22 06:10:56,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:10:56,923 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2020-12-22 06:10:56,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:10:56,972 INFO L225 Difference]: With dead ends: 12618 [2020-12-22 06:10:56,972 INFO L226 Difference]: Without dead ends: 6281 [2020-12-22 06:10:56,984 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 06:10:56,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6281 states. [2020-12-22 06:10:57,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6281 to 6281. [2020-12-22 06:10:57,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6281 states. [2020-12-22 06:10:57,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6281 states to 6281 states and 11813 transitions. [2020-12-22 06:10:57,149 INFO L78 Accepts]: Start accepts. Automaton has 6281 states and 11813 transitions. Word has length 42 [2020-12-22 06:10:57,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:10:57,150 INFO L481 AbstractCegarLoop]: Abstraction has 6281 states and 11813 transitions. [2020-12-22 06:10:57,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:10:57,150 INFO L276 IsEmpty]: Start isEmpty. Operand 6281 states and 11813 transitions. [2020-12-22 06:10:57,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 06:10:57,155 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:10:57,155 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] [2020-12-22 06:10:57,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:10:57,156 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:10:57,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:10:57,158 INFO L82 PathProgramCache]: Analyzing trace with hash -462596633, now seen corresponding path program 1 times [2020-12-22 06:10:57,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:10:57,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831121829] [2020-12-22 06:10:57,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:10:57,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:10:57,287 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 06:10:57,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831121829] [2020-12-22 06:10:57,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:10:57,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:10:57,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136326690] [2020-12-22 06:10:57,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:10:57,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:10:57,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:10:57,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:10:57,291 INFO L87 Difference]: Start difference. First operand 6281 states and 11813 transitions. Second operand 4 states. [2020-12-22 06:10:57,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:10:57,568 INFO L93 Difference]: Finished difference Result 12536 states and 23589 transitions. [2020-12-22 06:10:57,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:10:57,568 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-12-22 06:10:57,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:10:57,585 INFO L225 Difference]: With dead ends: 12536 [2020-12-22 06:10:57,586 INFO L226 Difference]: Without dead ends: 6281 [2020-12-22 06:10:57,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 06:10:57,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6281 states. [2020-12-22 06:10:57,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6281 to 6281. [2020-12-22 06:10:57,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6281 states. [2020-12-22 06:10:57,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6281 states to 6281 states and 11811 transitions. [2020-12-22 06:10:57,787 INFO L78 Accepts]: Start accepts. Automaton has 6281 states and 11811 transitions. Word has length 45 [2020-12-22 06:10:57,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:10:57,794 INFO L481 AbstractCegarLoop]: Abstraction has 6281 states and 11811 transitions. [2020-12-22 06:10:57,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:10:57,795 INFO L276 IsEmpty]: Start isEmpty. Operand 6281 states and 11811 transitions. [2020-12-22 06:10:57,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 06:10:57,796 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:10:57,797 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:10:57,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:10:57,797 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:10:57,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:10:57,798 INFO L82 PathProgramCache]: Analyzing trace with hash 733084748, now seen corresponding path program 1 times [2020-12-22 06:10:57,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:10:57,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030519665] [2020-12-22 06:10:57,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:10:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:10:57,926 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 06:10:57,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030519665] [2020-12-22 06:10:57,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:10:57,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:10:57,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946007304] [2020-12-22 06:10:57,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:10:57,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:10:57,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:10:57,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:10:57,931 INFO L87 Difference]: Start difference. First operand 6281 states and 11811 transitions. Second operand 4 states. [2020-12-22 06:10:58,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:10:58,359 INFO L93 Difference]: Finished difference Result 12536 states and 23586 transitions. [2020-12-22 06:10:58,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:10:58,360 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-12-22 06:10:58,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:10:58,375 INFO L225 Difference]: With dead ends: 12536 [2020-12-22 06:10:58,375 INFO L226 Difference]: Without dead ends: 6281 [2020-12-22 06:10:58,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 06:10:58,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6281 states. [2020-12-22 06:10:58,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6281 to 6281. [2020-12-22 06:10:58,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6281 states. [2020-12-22 06:10:58,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6281 states to 6281 states and 11809 transitions. [2020-12-22 06:10:58,570 INFO L78 Accepts]: Start accepts. Automaton has 6281 states and 11809 transitions. Word has length 46 [2020-12-22 06:10:58,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:10:58,570 INFO L481 AbstractCegarLoop]: Abstraction has 6281 states and 11809 transitions. [2020-12-22 06:10:58,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:10:58,571 INFO L276 IsEmpty]: Start isEmpty. Operand 6281 states and 11809 transitions. [2020-12-22 06:10:58,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 06:10:58,572 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:10:58,573 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] [2020-12-22 06:10:58,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:10:58,573 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:10:58,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:10:58,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1684956916, now seen corresponding path program 1 times [2020-12-22 06:10:58,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:10:58,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24109397] [2020-12-22 06:10:58,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:10:58,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:10:58,675 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 06:10:58,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24109397] [2020-12-22 06:10:58,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:10:58,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:10:58,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504848033] [2020-12-22 06:10:58,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:10:58,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:10:58,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:10:58,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:10:58,678 INFO L87 Difference]: Start difference. First operand 6281 states and 11809 transitions. Second operand 4 states. [2020-12-22 06:10:58,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:10:58,947 INFO L93 Difference]: Finished difference Result 12536 states and 23583 transitions. [2020-12-22 06:10:58,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:10:58,948 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-12-22 06:10:58,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:10:58,965 INFO L225 Difference]: With dead ends: 12536 [2020-12-22 06:10:58,965 INFO L226 Difference]: Without dead ends: 6281 [2020-12-22 06:10:58,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 06:10:58,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6281 states. [2020-12-22 06:10:59,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6281 to 6281. [2020-12-22 06:10:59,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6281 states. [2020-12-22 06:10:59,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6281 states to 6281 states and 11807 transitions. [2020-12-22 06:10:59,149 INFO L78 Accepts]: Start accepts. Automaton has 6281 states and 11807 transitions. Word has length 47 [2020-12-22 06:10:59,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:10:59,151 INFO L481 AbstractCegarLoop]: Abstraction has 6281 states and 11807 transitions. [2020-12-22 06:10:59,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:10:59,151 INFO L276 IsEmpty]: Start isEmpty. Operand 6281 states and 11807 transitions. [2020-12-22 06:10:59,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-22 06:10:59,154 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:10:59,155 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] [2020-12-22 06:10:59,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:10:59,155 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:10:59,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:10:59,156 INFO L82 PathProgramCache]: Analyzing trace with hash -164295983, now seen corresponding path program 1 times [2020-12-22 06:10:59,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:10:59,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980692471] [2020-12-22 06:10:59,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:10:59,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:10:59,230 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 06:10:59,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980692471] [2020-12-22 06:10:59,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:10:59,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:10:59,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136495564] [2020-12-22 06:10:59,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:10:59,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:10:59,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:10:59,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:10:59,234 INFO L87 Difference]: Start difference. First operand 6281 states and 11807 transitions. Second operand 4 states. [2020-12-22 06:10:59,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:10:59,539 INFO L93 Difference]: Finished difference Result 12536 states and 23580 transitions. [2020-12-22 06:10:59,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:10:59,539 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-12-22 06:10:59,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:10:59,556 INFO L225 Difference]: With dead ends: 12536 [2020-12-22 06:10:59,556 INFO L226 Difference]: Without dead ends: 6281 [2020-12-22 06:10:59,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 06:10:59,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6281 states. [2020-12-22 06:10:59,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6281 to 6281. [2020-12-22 06:10:59,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6281 states. [2020-12-22 06:10:59,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6281 states to 6281 states and 11805 transitions. [2020-12-22 06:10:59,738 INFO L78 Accepts]: Start accepts. Automaton has 6281 states and 11805 transitions. Word has length 48 [2020-12-22 06:10:59,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:10:59,738 INFO L481 AbstractCegarLoop]: Abstraction has 6281 states and 11805 transitions. [2020-12-22 06:10:59,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:10:59,739 INFO L276 IsEmpty]: Start isEmpty. Operand 6281 states and 11805 transitions. [2020-12-22 06:10:59,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 06:10:59,741 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:10:59,741 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] [2020-12-22 06:10:59,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:10:59,741 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:10:59,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:10:59,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1097906127, now seen corresponding path program 1 times [2020-12-22 06:10:59,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:10:59,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344395343] [2020-12-22 06:10:59,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:10:59,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:10:59,840 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 06:10:59,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344395343] [2020-12-22 06:10:59,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:10:59,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:10:59,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074042367] [2020-12-22 06:10:59,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:10:59,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:10:59,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:10:59,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:10:59,844 INFO L87 Difference]: Start difference. First operand 6281 states and 11805 transitions. Second operand 5 states. [2020-12-22 06:11:01,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:01,193 INFO L93 Difference]: Finished difference Result 17725 states and 33189 transitions. [2020-12-22 06:11:01,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 06:11:01,194 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-12-22 06:11:01,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:01,223 INFO L225 Difference]: With dead ends: 17725 [2020-12-22 06:11:01,223 INFO L226 Difference]: Without dead ends: 11514 [2020-12-22 06:11:01,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:11:01,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11514 states. [2020-12-22 06:11:01,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11514 to 11049. [2020-12-22 06:11:01,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11049 states. [2020-12-22 06:11:01,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11049 states to 11049 states and 20779 transitions. [2020-12-22 06:11:01,576 INFO L78 Accepts]: Start accepts. Automaton has 11049 states and 20779 transitions. Word has length 49 [2020-12-22 06:11:01,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:01,576 INFO L481 AbstractCegarLoop]: Abstraction has 11049 states and 20779 transitions. [2020-12-22 06:11:01,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:11:01,577 INFO L276 IsEmpty]: Start isEmpty. Operand 11049 states and 20779 transitions. [2020-12-22 06:11:01,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 06:11:01,578 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:01,578 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] [2020-12-22 06:11:01,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:11:01,579 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:11:01,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:01,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1279921354, now seen corresponding path program 1 times [2020-12-22 06:11:01,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:01,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637271658] [2020-12-22 06:11:01,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:01,657 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 06:11:01,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637271658] [2020-12-22 06:11:01,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:01,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:11:01,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005240718] [2020-12-22 06:11:01,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:11:01,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:01,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:11:01,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:11:01,661 INFO L87 Difference]: Start difference. First operand 11049 states and 20779 transitions. Second operand 5 states. [2020-12-22 06:11:06,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:06,264 INFO L93 Difference]: Finished difference Result 91858 states and 172892 transitions. [2020-12-22 06:11:06,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:11:06,265 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-12-22 06:11:06,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:06,503 INFO L225 Difference]: With dead ends: 91858 [2020-12-22 06:11:06,504 INFO L226 Difference]: Without dead ends: 80879 [2020-12-22 06:11:06,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:11:06,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80879 states. [2020-12-22 06:11:08,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80879 to 20745. [2020-12-22 06:11:08,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20745 states. [2020-12-22 06:11:08,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20745 states to 20745 states and 39005 transitions. [2020-12-22 06:11:08,093 INFO L78 Accepts]: Start accepts. Automaton has 20745 states and 39005 transitions. Word has length 49 [2020-12-22 06:11:08,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:08,094 INFO L481 AbstractCegarLoop]: Abstraction has 20745 states and 39005 transitions. [2020-12-22 06:11:08,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:11:08,094 INFO L276 IsEmpty]: Start isEmpty. Operand 20745 states and 39005 transitions. [2020-12-22 06:11:08,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 06:11:08,096 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:08,096 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] [2020-12-22 06:11:08,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:11:08,096 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:11:08,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:08,097 INFO L82 PathProgramCache]: Analyzing trace with hash -938010054, now seen corresponding path program 1 times [2020-12-22 06:11:08,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:08,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043343832] [2020-12-22 06:11:08,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:08,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:08,156 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 06:11:08,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043343832] [2020-12-22 06:11:08,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:08,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:11:08,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183567956] [2020-12-22 06:11:08,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:11:08,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:08,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:11:08,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:11:08,159 INFO L87 Difference]: Start difference. First operand 20745 states and 39005 transitions. Second operand 3 states. [2020-12-22 06:11:09,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:09,924 INFO L93 Difference]: Finished difference Result 61315 states and 115299 transitions. [2020-12-22 06:11:09,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:11:09,926 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2020-12-22 06:11:09,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:10,015 INFO L225 Difference]: With dead ends: 61315 [2020-12-22 06:11:10,015 INFO L226 Difference]: Without dead ends: 40602 [2020-12-22 06:11:10,043 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 06:11:10,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40602 states. [2020-12-22 06:11:10,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40602 to 20621. [2020-12-22 06:11:10,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20621 states. [2020-12-22 06:11:10,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20621 states to 20621 states and 38757 transitions. [2020-12-22 06:11:10,950 INFO L78 Accepts]: Start accepts. Automaton has 20621 states and 38757 transitions. Word has length 50 [2020-12-22 06:11:10,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:10,950 INFO L481 AbstractCegarLoop]: Abstraction has 20621 states and 38757 transitions. [2020-12-22 06:11:10,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:11:10,951 INFO L276 IsEmpty]: Start isEmpty. Operand 20621 states and 38757 transitions. [2020-12-22 06:11:10,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 06:11:10,952 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:10,952 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] [2020-12-22 06:11:10,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:11:10,953 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:11:10,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:10,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1758868867, now seen corresponding path program 1 times [2020-12-22 06:11:10,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:10,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747074867] [2020-12-22 06:11:10,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:10,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:11,032 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 06:11:11,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747074867] [2020-12-22 06:11:11,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:11,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:11:11,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308836790] [2020-12-22 06:11:11,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:11:11,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:11,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:11:11,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:11:11,035 INFO L87 Difference]: Start difference. First operand 20621 states and 38757 transitions. Second operand 5 states. [2020-12-22 06:11:13,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:13,790 INFO L93 Difference]: Finished difference Result 49428 states and 92738 transitions. [2020-12-22 06:11:13,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:11:13,790 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-12-22 06:11:13,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:13,843 INFO L225 Difference]: With dead ends: 49428 [2020-12-22 06:11:13,844 INFO L226 Difference]: Without dead ends: 28841 [2020-12-22 06:11:13,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:11:13,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28841 states. [2020-12-22 06:11:14,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28841 to 28423. [2020-12-22 06:11:14,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28423 states. [2020-12-22 06:11:14,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28423 states to 28423 states and 52985 transitions. [2020-12-22 06:11:14,978 INFO L78 Accepts]: Start accepts. Automaton has 28423 states and 52985 transitions. Word has length 50 [2020-12-22 06:11:14,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:14,978 INFO L481 AbstractCegarLoop]: Abstraction has 28423 states and 52985 transitions. [2020-12-22 06:11:14,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:11:14,978 INFO L276 IsEmpty]: Start isEmpty. Operand 28423 states and 52985 transitions. [2020-12-22 06:11:14,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 06:11:14,980 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:14,980 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] [2020-12-22 06:11:14,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:11:14,980 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:11:14,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:14,981 INFO L82 PathProgramCache]: Analyzing trace with hash -203819908, now seen corresponding path program 1 times [2020-12-22 06:11:14,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:14,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040837483] [2020-12-22 06:11:14,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:15,060 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 06:11:15,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040837483] [2020-12-22 06:11:15,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:15,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:11:15,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40083527] [2020-12-22 06:11:15,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:11:15,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:15,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:11:15,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:11:15,062 INFO L87 Difference]: Start difference. First operand 28423 states and 52985 transitions. Second operand 6 states. [2020-12-22 06:11:19,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:19,625 INFO L93 Difference]: Finished difference Result 85588 states and 159065 transitions. [2020-12-22 06:11:19,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 06:11:19,626 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-12-22 06:11:19,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:19,711 INFO L225 Difference]: With dead ends: 85588 [2020-12-22 06:11:19,711 INFO L226 Difference]: Without dead ends: 57205 [2020-12-22 06:11:19,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-12-22 06:11:19,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57205 states. [2020-12-22 06:11:21,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57205 to 28423. [2020-12-22 06:11:21,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28423 states. [2020-12-22 06:11:21,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28423 states to 28423 states and 52874 transitions. [2020-12-22 06:11:21,044 INFO L78 Accepts]: Start accepts. Automaton has 28423 states and 52874 transitions. Word has length 54 [2020-12-22 06:11:21,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:21,044 INFO L481 AbstractCegarLoop]: Abstraction has 28423 states and 52874 transitions. [2020-12-22 06:11:21,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:11:21,044 INFO L276 IsEmpty]: Start isEmpty. Operand 28423 states and 52874 transitions. [2020-12-22 06:11:21,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 06:11:21,046 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:21,046 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] [2020-12-22 06:11:21,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:11:21,046 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:11:21,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:21,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1095776257, now seen corresponding path program 1 times [2020-12-22 06:11:21,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:21,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381832062] [2020-12-22 06:11:21,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:21,116 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 06:11:21,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381832062] [2020-12-22 06:11:21,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:21,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:11:21,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488779682] [2020-12-22 06:11:21,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:11:21,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:21,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:11:21,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:11:21,118 INFO L87 Difference]: Start difference. First operand 28423 states and 52874 transitions. Second operand 5 states. [2020-12-22 06:11:28,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:28,599 INFO L93 Difference]: Finished difference Result 241999 states and 451494 transitions. [2020-12-22 06:11:28,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:11:28,599 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-12-22 06:11:28,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:29,185 INFO L225 Difference]: With dead ends: 241999 [2020-12-22 06:11:29,185 INFO L226 Difference]: Without dead ends: 213635 [2020-12-22 06:11:29,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:11:29,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213635 states. [2020-12-22 06:11:32,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213635 to 54741. [2020-12-22 06:11:32,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54741 states. [2020-12-22 06:11:32,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54741 states to 54741 states and 101776 transitions. [2020-12-22 06:11:32,328 INFO L78 Accepts]: Start accepts. Automaton has 54741 states and 101776 transitions. Word has length 55 [2020-12-22 06:11:32,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:32,329 INFO L481 AbstractCegarLoop]: Abstraction has 54741 states and 101776 transitions. [2020-12-22 06:11:32,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:11:32,329 INFO L276 IsEmpty]: Start isEmpty. Operand 54741 states and 101776 transitions. [2020-12-22 06:11:32,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 06:11:32,330 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:32,331 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] [2020-12-22 06:11:32,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:11:32,331 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:11:32,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:32,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1901449353, now seen corresponding path program 1 times [2020-12-22 06:11:32,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:32,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888423785] [2020-12-22 06:11:32,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:32,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:32,387 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 06:11:32,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888423785] [2020-12-22 06:11:32,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:32,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:11:32,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207283873] [2020-12-22 06:11:32,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:11:32,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:32,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:11:32,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:11:32,390 INFO L87 Difference]: Start difference. First operand 54741 states and 101776 transitions. Second operand 3 states. [2020-12-22 06:11:36,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:36,023 INFO L93 Difference]: Finished difference Result 162251 states and 302018 transitions. [2020-12-22 06:11:36,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:11:36,024 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-12-22 06:11:36,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:36,225 INFO L225 Difference]: With dead ends: 162251 [2020-12-22 06:11:36,225 INFO L226 Difference]: Without dead ends: 107547 [2020-12-22 06:11:36,282 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 06:11:36,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107547 states. [2020-12-22 06:11:38,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107547 to 54487. [2020-12-22 06:11:38,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54487 states. [2020-12-22 06:11:38,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54487 states to 54487 states and 101275 transitions. [2020-12-22 06:11:38,623 INFO L78 Accepts]: Start accepts. Automaton has 54487 states and 101275 transitions. Word has length 56 [2020-12-22 06:11:38,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:38,623 INFO L481 AbstractCegarLoop]: Abstraction has 54487 states and 101275 transitions. [2020-12-22 06:11:38,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:11:38,623 INFO L276 IsEmpty]: Start isEmpty. Operand 54487 states and 101275 transitions. [2020-12-22 06:11:38,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 06:11:38,628 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:38,629 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] [2020-12-22 06:11:38,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:11:38,629 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:11:38,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:38,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1956863235, now seen corresponding path program 1 times [2020-12-22 06:11:38,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:38,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697298375] [2020-12-22 06:11:38,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:38,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:38,701 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 06:11:38,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697298375] [2020-12-22 06:11:38,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:38,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:11:38,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580395614] [2020-12-22 06:11:38,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:11:38,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:38,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:11:38,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:11:38,704 INFO L87 Difference]: Start difference. First operand 54487 states and 101275 transitions. Second operand 3 states. [2020-12-22 06:11:42,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:42,423 INFO L93 Difference]: Finished difference Result 161750 states and 301045 transitions. [2020-12-22 06:11:42,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:11:42,424 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-12-22 06:11:42,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:42,615 INFO L225 Difference]: With dead ends: 161750 [2020-12-22 06:11:42,615 INFO L226 Difference]: Without dead ends: 107306 [2020-12-22 06:11:42,659 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 06:11:42,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107306 states. [2020-12-22 06:11:44,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107306 to 54375. [2020-12-22 06:11:44,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54375 states. [2020-12-22 06:11:45,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54375 states to 54375 states and 100939 transitions. [2020-12-22 06:11:45,020 INFO L78 Accepts]: Start accepts. Automaton has 54375 states and 100939 transitions. Word has length 60 [2020-12-22 06:11:45,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:45,020 INFO L481 AbstractCegarLoop]: Abstraction has 54375 states and 100939 transitions. [2020-12-22 06:11:45,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:11:45,021 INFO L276 IsEmpty]: Start isEmpty. Operand 54375 states and 100939 transitions. [2020-12-22 06:11:45,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 06:11:45,022 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:45,023 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] [2020-12-22 06:11:45,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:11:45,023 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:11:45,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:45,024 INFO L82 PathProgramCache]: Analyzing trace with hash 76190260, now seen corresponding path program 1 times [2020-12-22 06:11:45,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:45,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955646012] [2020-12-22 06:11:45,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:45,097 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 06:11:45,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955646012] [2020-12-22 06:11:45,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:45,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:11:45,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179965388] [2020-12-22 06:11:45,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:11:45,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:45,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:11:45,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:11:45,100 INFO L87 Difference]: Start difference. First operand 54375 states and 100939 transitions. Second operand 5 states. [2020-12-22 06:11:57,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:57,978 INFO L93 Difference]: Finished difference Result 459427 states and 856412 transitions. [2020-12-22 06:11:57,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:11:57,979 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-12-22 06:11:57,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:59,052 INFO L225 Difference]: With dead ends: 459427 [2020-12-22 06:11:59,052 INFO L226 Difference]: Without dead ends: 405106 [2020-12-22 06:11:59,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:11:59,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405106 states. [2020-12-22 06:12:05,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405106 to 105955. [2020-12-22 06:12:05,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105955 states. [2020-12-22 06:12:05,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105955 states to 105955 states and 196581 transitions. [2020-12-22 06:12:05,715 INFO L78 Accepts]: Start accepts. Automaton has 105955 states and 196581 transitions. Word has length 61 [2020-12-22 06:12:05,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:12:05,715 INFO L481 AbstractCegarLoop]: Abstraction has 105955 states and 196581 transitions. [2020-12-22 06:12:05,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:12:05,716 INFO L276 IsEmpty]: Start isEmpty. Operand 105955 states and 196581 transitions. [2020-12-22 06:12:05,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 06:12:05,717 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:12:05,717 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] [2020-12-22 06:12:05,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:12:05,717 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:12:05,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:12:05,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1127456931, now seen corresponding path program 1 times [2020-12-22 06:12:05,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:12:05,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631772012] [2020-12-22 06:12:05,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:12:05,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:12:05,772 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 06:12:05,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631772012] [2020-12-22 06:12:05,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:12:05,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:12:05,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065659312] [2020-12-22 06:12:05,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:12:05,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:12:05,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:12:05,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:12:05,774 INFO L87 Difference]: Start difference. First operand 105955 states and 196581 transitions. Second operand 3 states. [2020-12-22 06:12:13,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:12:13,166 INFO L93 Difference]: Finished difference Result 314662 states and 584935 transitions. [2020-12-22 06:12:13,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:12:13,167 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-22 06:12:13,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:12:13,591 INFO L225 Difference]: With dead ends: 314662 [2020-12-22 06:12:13,592 INFO L226 Difference]: Without dead ends: 208757 [2020-12-22 06:12:13,678 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 06:12:13,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208757 states. [2020-12-22 06:12:18,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208757 to 105847. [2020-12-22 06:12:18,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105847 states. [2020-12-22 06:12:18,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105847 states to 105847 states and 196041 transitions. [2020-12-22 06:12:18,830 INFO L78 Accepts]: Start accepts. Automaton has 105847 states and 196041 transitions. Word has length 66 [2020-12-22 06:12:18,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:12:18,830 INFO L481 AbstractCegarLoop]: Abstraction has 105847 states and 196041 transitions. [2020-12-22 06:12:18,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:12:18,830 INFO L276 IsEmpty]: Start isEmpty. Operand 105847 states and 196041 transitions. [2020-12-22 06:12:18,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 06:12:18,832 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:12:18,832 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] [2020-12-22 06:12:18,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 06:12:18,832 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:12:18,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:12:18,833 INFO L82 PathProgramCache]: Analyzing trace with hash -2028058754, now seen corresponding path program 1 times [2020-12-22 06:12:18,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:12:18,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170058356] [2020-12-22 06:12:18,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:12:18,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:12:18,951 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 06:12:18,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170058356] [2020-12-22 06:12:18,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:12:18,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:12:18,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345552213] [2020-12-22 06:12:18,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:12:18,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:12:18,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:12:18,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:12:18,954 INFO L87 Difference]: Start difference. First operand 105847 states and 196041 transitions. Second operand 5 states. [2020-12-22 06:12:48,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:12:48,151 INFO L93 Difference]: Finished difference Result 900793 states and 1677152 transitions. [2020-12-22 06:12:48,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:12:48,152 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-12-22 06:12:48,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:12:50,207 INFO L225 Difference]: With dead ends: 900793 [2020-12-22 06:12:50,207 INFO L226 Difference]: Without dead ends: 794999 [2020-12-22 06:12:50,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:12:51,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794999 states. [2020-12-22 06:13:06,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794999 to 207631. [2020-12-22 06:13:06,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207631 states. [2020-12-22 06:13:06,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207631 states to 207631 states and 384211 transitions. [2020-12-22 06:13:06,758 INFO L78 Accepts]: Start accepts. Automaton has 207631 states and 384211 transitions. Word has length 68 [2020-12-22 06:13:06,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:13:06,758 INFO L481 AbstractCegarLoop]: Abstraction has 207631 states and 384211 transitions. [2020-12-22 06:13:06,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:13:06,759 INFO L276 IsEmpty]: Start isEmpty. Operand 207631 states and 384211 transitions. [2020-12-22 06:13:06,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 06:13:06,760 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:13:06,760 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] [2020-12-22 06:13:06,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 06:13:06,761 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:13:06,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:13:06,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1359360981, now seen corresponding path program 1 times [2020-12-22 06:13:06,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:13:06,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26355512] [2020-12-22 06:13:06,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:13:06,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:13:06,850 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 06:13:06,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26355512] [2020-12-22 06:13:06,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:13:06,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:13:06,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981607580] [2020-12-22 06:13:06,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:13:06,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:13:06,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:13:06,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:13:06,852 INFO L87 Difference]: Start difference. First operand 207631 states and 384211 transitions. Second operand 7 states. [2020-12-22 06:13:32,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:13:32,312 INFO L93 Difference]: Finished difference Result 605315 states and 1115661 transitions. [2020-12-22 06:13:32,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 06:13:32,312 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-12-22 06:13:32,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:13:33,481 INFO L225 Difference]: With dead ends: 605315 [2020-12-22 06:13:33,481 INFO L226 Difference]: Without dead ends: 397743 [2020-12-22 06:13:33,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-12-22 06:13:34,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397743 states. [2020-12-22 06:13:47,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397743 to 292045. [2020-12-22 06:13:47,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292045 states. [2020-12-22 06:13:48,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292045 states to 292045 states and 538244 transitions. [2020-12-22 06:13:48,524 INFO L78 Accepts]: Start accepts. Automaton has 292045 states and 538244 transitions. Word has length 69 [2020-12-22 06:13:48,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:13:48,524 INFO L481 AbstractCegarLoop]: Abstraction has 292045 states and 538244 transitions. [2020-12-22 06:13:48,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:13:48,524 INFO L276 IsEmpty]: Start isEmpty. Operand 292045 states and 538244 transitions. [2020-12-22 06:13:48,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 06:13:48,540 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:13:48,540 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] [2020-12-22 06:13:48,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 06:13:48,540 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:13:48,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:13:48,541 INFO L82 PathProgramCache]: Analyzing trace with hash -2005939431, now seen corresponding path program 1 times [2020-12-22 06:13:48,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:13:48,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296363009] [2020-12-22 06:13:48,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:13:48,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:13:48,685 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 06:13:48,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296363009] [2020-12-22 06:13:48,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:13:48,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:13:48,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342984730] [2020-12-22 06:13:48,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:13:48,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:13:48,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:13:48,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:13:48,689 INFO L87 Difference]: Start difference. First operand 292045 states and 538244 transitions. Second operand 7 states.