/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_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:10:53,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:10:53,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:10:53,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:10:53,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:10:53,798 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:10:53,800 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:10:53,803 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:10:53,805 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:10:53,807 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:10:53,808 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:10:53,810 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:10:53,811 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:10:53,812 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:10:53,814 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:10:53,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:10:53,817 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:10:53,818 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:10:53,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:10:53,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:10:53,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:10:53,850 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:10:53,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:10:53,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:10:53,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:10:53,870 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:10:53,871 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:10:53,875 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:10:53,876 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:10:53,879 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:10:53,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:10:53,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:10:53,880 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:10:53,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:10:53,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:10:53,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:10:53,883 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:10:53,941 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:10:53,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:10:53,944 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:10:53,944 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:10:53,944 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:10:53,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:10:53,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:10:53,946 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:10:53,947 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:10:53,947 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:10:53,948 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:10:53,948 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:10:53,948 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:10:53,949 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:10:53,949 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:10:53,949 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:10:53,949 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:10:53,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:10:53,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:10:53,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:10:53,950 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:10:53,950 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:10:53,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:10:53,950 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:10:53,951 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:10:53,951 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:10:54,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:10:54,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:10:54,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:10:54,399 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:10:54,400 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:10:54,401 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c [2020-12-22 06:10:54,491 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd0bd6528/18294f704b554b58b37ca83816de898a/FLAGeb53be514 [2020-12-22 06:10:55,363 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:10:55,364 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c [2020-12-22 06:10:55,392 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd0bd6528/18294f704b554b58b37ca83816de898a/FLAGeb53be514 [2020-12-22 06:10:55,487 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd0bd6528/18294f704b554b58b37ca83816de898a [2020-12-22 06:10:55,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:10:55,493 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:10:55,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:10:55,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:10:55,501 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:10:55,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:10:55" (1/1) ... [2020-12-22 06:10:55,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40ce7a17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:55, skipping insertion in model container [2020-12-22 06:10:55,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:10:55" (1/1) ... [2020-12-22 06:10:55,514 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:10:55,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:10:56,382 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_product27.cil.c[72679,72692] [2020-12-22 06:10:56,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:10:56,400 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:10:56,522 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_product27.cil.c[72679,72692] [2020-12-22 06:10:56,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:10:56,624 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:10:56,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:56 WrapperNode [2020-12-22 06:10:56,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:10:56,628 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:10:56,628 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:10:56,628 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:10:56,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:56" (1/1) ... [2020-12-22 06:10:56,708 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:56" (1/1) ... [2020-12-22 06:10:57,210 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:10:57,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:10:57,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:10:57,212 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:10:57,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:56" (1/1) ... [2020-12-22 06:10:57,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:56" (1/1) ... [2020-12-22 06:10:57,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:56" (1/1) ... [2020-12-22 06:10:57,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:56" (1/1) ... [2020-12-22 06:10:57,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:56" (1/1) ... [2020-12-22 06:10:57,832 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:56" (1/1) ... [2020-12-22 06:10:57,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:56" (1/1) ... [2020-12-22 06:10:57,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:10:57,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:10:57,948 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:10:57,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:10:57,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:56" (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 06:10:58,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:10:58,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:10:58,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:10:58,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:11:11,154 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:11:11,154 INFO L299 CfgBuilder]: Removed 1617 assume(true) statements. [2020-12-22 06:11:11,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:11:11 BoogieIcfgContainer [2020-12-22 06:11:11,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:11:11,165 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:11:11,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:11:11,170 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:11:11,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:10:55" (1/3) ... [2020-12-22 06:11:11,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@363a192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:11:11, skipping insertion in model container [2020-12-22 06:11:11,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:56" (2/3) ... [2020-12-22 06:11:11,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@363a192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:11:11, skipping insertion in model container [2020-12-22 06:11:11,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:11:11" (3/3) ... [2020-12-22 06:11:11,174 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product27.cil.c [2020-12-22 06:11:11,181 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:11:11,190 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-12-22 06:11:11,211 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-12-22 06:11:11,262 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:11:11,263 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:11:11,263 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:11:11,263 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:11:11,263 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:11:11,264 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:11:11,264 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:11:11,264 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:11:11,388 INFO L276 IsEmpty]: Start isEmpty. Operand 6573 states. [2020-12-22 06:11:11,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 06:11:11,408 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:11,410 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 06:11:11,411 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 06:11:11,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:11,418 INFO L82 PathProgramCache]: Analyzing trace with hash -416717237, now seen corresponding path program 1 times [2020-12-22 06:11:11,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:11,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128736803] [2020-12-22 06:11:11,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:12,011 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 06:11:12,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128736803] [2020-12-22 06:11:12,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:12,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:11:12,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340090317] [2020-12-22 06:11:12,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:11:12,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:12,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:11:12,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:11:12,045 INFO L87 Difference]: Start difference. First operand 6573 states. Second operand 4 states. [2020-12-22 06:11:13,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:13,382 INFO L93 Difference]: Finished difference Result 26117 states and 49049 transitions. [2020-12-22 06:11:13,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:11:13,384 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-12-22 06:11:13,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:13,559 INFO L225 Difference]: With dead ends: 26117 [2020-12-22 06:11:13,560 INFO L226 Difference]: Without dead ends: 19557 [2020-12-22 06:11:13,596 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 06:11:13,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19557 states. [2020-12-22 06:11:14,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19557 to 6581. [2020-12-22 06:11:14,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6581 states. [2020-12-22 06:11:14,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6581 states to 6581 states and 12338 transitions. [2020-12-22 06:11:14,107 INFO L78 Accepts]: Start accepts. Automaton has 6581 states and 12338 transitions. Word has length 47 [2020-12-22 06:11:14,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:14,108 INFO L481 AbstractCegarLoop]: Abstraction has 6581 states and 12338 transitions. [2020-12-22 06:11:14,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:11:14,108 INFO L276 IsEmpty]: Start isEmpty. Operand 6581 states and 12338 transitions. [2020-12-22 06:11:14,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-22 06:11:14,114 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:14,114 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 06:11:14,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:11:14,117 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 06:11:14,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:14,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1783423702, now seen corresponding path program 1 times [2020-12-22 06:11:14,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:14,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114707812] [2020-12-22 06:11:14,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:14,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:14,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:11:14,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114707812] [2020-12-22 06:11:14,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:14,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:11:14,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090424262] [2020-12-22 06:11:14,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:11:14,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:14,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:11:14,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:11:14,322 INFO L87 Difference]: Start difference. First operand 6581 states and 12338 transitions. Second operand 3 states. [2020-12-22 06:11:14,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:14,587 INFO L93 Difference]: Finished difference Result 13078 states and 24523 transitions. [2020-12-22 06:11:14,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:11:14,588 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-12-22 06:11:14,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:14,641 INFO L225 Difference]: With dead ends: 13078 [2020-12-22 06:11:14,641 INFO L226 Difference]: Without dead ends: 6511 [2020-12-22 06:11:14,655 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 06:11:14,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6511 states. [2020-12-22 06:11:14,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6511 to 6511. [2020-12-22 06:11:14,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6511 states. [2020-12-22 06:11:14,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6511 states to 6511 states and 12198 transitions. [2020-12-22 06:11:14,879 INFO L78 Accepts]: Start accepts. Automaton has 6511 states and 12198 transitions. Word has length 48 [2020-12-22 06:11:14,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:14,879 INFO L481 AbstractCegarLoop]: Abstraction has 6511 states and 12198 transitions. [2020-12-22 06:11:14,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:11:14,880 INFO L276 IsEmpty]: Start isEmpty. Operand 6511 states and 12198 transitions. [2020-12-22 06:11:14,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 06:11:14,885 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:14,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:11:14,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:11:14,886 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 06:11:14,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:14,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1571718355, now seen corresponding path program 1 times [2020-12-22 06:11:14,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:14,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230840349] [2020-12-22 06:11:14,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:15,062 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 06:11:15,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230840349] [2020-12-22 06:11:15,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:15,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:11:15,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680235714] [2020-12-22 06:11:15,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:11:15,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:15,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:11:15,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:11:15,066 INFO L87 Difference]: Start difference. First operand 6511 states and 12198 transitions. Second operand 4 states. [2020-12-22 06:11:15,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:15,454 INFO L93 Difference]: Finished difference Result 12996 states and 24359 transitions. [2020-12-22 06:11:15,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:11:15,455 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-12-22 06:11:15,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:15,475 INFO L225 Difference]: With dead ends: 12996 [2020-12-22 06:11:15,476 INFO L226 Difference]: Without dead ends: 6511 [2020-12-22 06:11:15,487 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 06:11:15,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6511 states. [2020-12-22 06:11:15,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6511 to 6511. [2020-12-22 06:11:15,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6511 states. [2020-12-22 06:11:15,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6511 states to 6511 states and 12196 transitions. [2020-12-22 06:11:15,698 INFO L78 Accepts]: Start accepts. Automaton has 6511 states and 12196 transitions. Word has length 51 [2020-12-22 06:11:15,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:15,706 INFO L481 AbstractCegarLoop]: Abstraction has 6511 states and 12196 transitions. [2020-12-22 06:11:15,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:11:15,707 INFO L276 IsEmpty]: Start isEmpty. Operand 6511 states and 12196 transitions. [2020-12-22 06:11:15,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 06:11:15,710 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:15,711 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] [2020-12-22 06:11:15,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:11:15,711 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 06:11:15,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:15,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1261702008, now seen corresponding path program 1 times [2020-12-22 06:11:15,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:15,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698068841] [2020-12-22 06:11:15,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:15,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:15,841 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 06:11:15,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698068841] [2020-12-22 06:11:15,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:15,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:11:15,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866787914] [2020-12-22 06:11:15,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:11:15,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:15,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:11:15,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:11:15,845 INFO L87 Difference]: Start difference. First operand 6511 states and 12196 transitions. Second operand 4 states. [2020-12-22 06:11:16,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:16,161 INFO L93 Difference]: Finished difference Result 12996 states and 24356 transitions. [2020-12-22 06:11:16,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:11:16,161 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-12-22 06:11:16,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:16,181 INFO L225 Difference]: With dead ends: 12996 [2020-12-22 06:11:16,182 INFO L226 Difference]: Without dead ends: 6511 [2020-12-22 06:11:16,194 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 06:11:16,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6511 states. [2020-12-22 06:11:16,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6511 to 6511. [2020-12-22 06:11:16,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6511 states. [2020-12-22 06:11:16,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6511 states to 6511 states and 12194 transitions. [2020-12-22 06:11:16,421 INFO L78 Accepts]: Start accepts. Automaton has 6511 states and 12194 transitions. Word has length 52 [2020-12-22 06:11:16,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:16,422 INFO L481 AbstractCegarLoop]: Abstraction has 6511 states and 12194 transitions. [2020-12-22 06:11:16,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:11:16,422 INFO L276 IsEmpty]: Start isEmpty. Operand 6511 states and 12194 transitions. [2020-12-22 06:11:16,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 06:11:16,424 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:16,424 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] [2020-12-22 06:11:16,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:11:16,425 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 06:11:16,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:16,425 INFO L82 PathProgramCache]: Analyzing trace with hash 278599736, now seen corresponding path program 1 times [2020-12-22 06:11:16,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:16,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37584521] [2020-12-22 06:11:16,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:16,525 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 06:11:16,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37584521] [2020-12-22 06:11:16,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:16,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:11:16,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781786819] [2020-12-22 06:11:16,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:11:16,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:16,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:11:16,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:11:16,529 INFO L87 Difference]: Start difference. First operand 6511 states and 12194 transitions. Second operand 4 states. [2020-12-22 06:11:16,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:16,969 INFO L93 Difference]: Finished difference Result 12996 states and 24353 transitions. [2020-12-22 06:11:16,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:11:16,972 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-12-22 06:11:16,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:16,995 INFO L225 Difference]: With dead ends: 12996 [2020-12-22 06:11:16,996 INFO L226 Difference]: Without dead ends: 6511 [2020-12-22 06:11:17,010 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 06:11:17,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6511 states. [2020-12-22 06:11:17,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6511 to 6511. [2020-12-22 06:11:17,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6511 states. [2020-12-22 06:11:17,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6511 states to 6511 states and 12192 transitions. [2020-12-22 06:11:17,226 INFO L78 Accepts]: Start accepts. Automaton has 6511 states and 12192 transitions. Word has length 53 [2020-12-22 06:11:17,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:17,226 INFO L481 AbstractCegarLoop]: Abstraction has 6511 states and 12192 transitions. [2020-12-22 06:11:17,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:11:17,227 INFO L276 IsEmpty]: Start isEmpty. Operand 6511 states and 12192 transitions. [2020-12-22 06:11:17,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 06:11:17,230 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:17,230 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 06:11:17,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:11:17,231 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 06:11:17,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:17,231 INFO L82 PathProgramCache]: Analyzing trace with hash -95329731, now seen corresponding path program 1 times [2020-12-22 06:11:17,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:17,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006529025] [2020-12-22 06:11:17,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:17,329 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 06:11:17,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006529025] [2020-12-22 06:11:17,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:17,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:11:17,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734851193] [2020-12-22 06:11:17,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:11:17,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:17,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:11:17,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:11:17,334 INFO L87 Difference]: Start difference. First operand 6511 states and 12192 transitions. Second operand 4 states. [2020-12-22 06:11:17,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:17,680 INFO L93 Difference]: Finished difference Result 12996 states and 24350 transitions. [2020-12-22 06:11:17,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:11:17,681 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-12-22 06:11:17,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:17,700 INFO L225 Difference]: With dead ends: 12996 [2020-12-22 06:11:17,701 INFO L226 Difference]: Without dead ends: 6511 [2020-12-22 06:11:17,712 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 06:11:17,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6511 states. [2020-12-22 06:11:17,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6511 to 6511. [2020-12-22 06:11:17,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6511 states. [2020-12-22 06:11:17,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6511 states to 6511 states and 12190 transitions. [2020-12-22 06:11:17,952 INFO L78 Accepts]: Start accepts. Automaton has 6511 states and 12190 transitions. Word has length 54 [2020-12-22 06:11:17,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:17,952 INFO L481 AbstractCegarLoop]: Abstraction has 6511 states and 12190 transitions. [2020-12-22 06:11:17,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:11:17,953 INFO L276 IsEmpty]: Start isEmpty. Operand 6511 states and 12190 transitions. [2020-12-22 06:11:17,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 06:11:17,955 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:17,955 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 06:11:17,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:11:17,955 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 06:11:17,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:17,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1235228573, now seen corresponding path program 1 times [2020-12-22 06:11:17,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:17,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578875055] [2020-12-22 06:11:17,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:17,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:18,076 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 06:11:18,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578875055] [2020-12-22 06:11:18,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:18,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:11:18,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914029075] [2020-12-22 06:11:18,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:11:18,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:18,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:11:18,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:11:18,079 INFO L87 Difference]: Start difference. First operand 6511 states and 12190 transitions. Second operand 7 states. [2020-12-22 06:11:19,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:19,980 INFO L93 Difference]: Finished difference Result 23226 states and 43402 transitions. [2020-12-22 06:11:19,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 06:11:19,981 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 55 [2020-12-22 06:11:19,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:20,032 INFO L225 Difference]: With dead ends: 23226 [2020-12-22 06:11:20,032 INFO L226 Difference]: Without dead ends: 16785 [2020-12-22 06:11:20,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 06:11:20,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16785 states. [2020-12-22 06:11:20,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16785 to 11455. [2020-12-22 06:11:20,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11455 states. [2020-12-22 06:11:20,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11455 states to 11455 states and 21456 transitions. [2020-12-22 06:11:20,786 INFO L78 Accepts]: Start accepts. Automaton has 11455 states and 21456 transitions. Word has length 55 [2020-12-22 06:11:20,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:20,787 INFO L481 AbstractCegarLoop]: Abstraction has 11455 states and 21456 transitions. [2020-12-22 06:11:20,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:11:20,787 INFO L276 IsEmpty]: Start isEmpty. Operand 11455 states and 21456 transitions. [2020-12-22 06:11:20,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 06:11:20,789 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:20,789 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 06:11:20,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:11:20,789 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 06:11:20,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:20,790 INFO L82 PathProgramCache]: Analyzing trace with hash 475638498, now seen corresponding path program 1 times [2020-12-22 06:11:20,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:20,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24301501] [2020-12-22 06:11:20,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:20,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:20,885 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 06:11:20,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24301501] [2020-12-22 06:11:20,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:20,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:11:20,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287728870] [2020-12-22 06:11:20,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:11:20,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:20,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:11:20,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:11:20,888 INFO L87 Difference]: Start difference. First operand 11455 states and 21456 transitions. Second operand 5 states. [2020-12-22 06:11:25,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:25,947 INFO L93 Difference]: Finished difference Result 94992 states and 178065 transitions. [2020-12-22 06:11:25,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:11:25,947 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-12-22 06:11:25,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:26,508 INFO L225 Difference]: With dead ends: 94992 [2020-12-22 06:11:26,509 INFO L226 Difference]: Without dead ends: 83607 [2020-12-22 06:11:26,543 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 06:11:26,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83607 states. [2020-12-22 06:11:28,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83607 to 21467. [2020-12-22 06:11:28,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21467 states. [2020-12-22 06:11:28,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21467 states to 21467 states and 40209 transitions. [2020-12-22 06:11:28,081 INFO L78 Accepts]: Start accepts. Automaton has 21467 states and 40209 transitions. Word has length 55 [2020-12-22 06:11:28,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:28,082 INFO L481 AbstractCegarLoop]: Abstraction has 21467 states and 40209 transitions. [2020-12-22 06:11:28,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:11:28,082 INFO L276 IsEmpty]: Start isEmpty. Operand 21467 states and 40209 transitions. [2020-12-22 06:11:28,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 06:11:28,084 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:28,084 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 06:11:28,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:11:28,085 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 06:11:28,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:28,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1969586458, now seen corresponding path program 1 times [2020-12-22 06:11:28,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:28,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342042636] [2020-12-22 06:11:28,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:28,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:28,155 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 06:11:28,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342042636] [2020-12-22 06:11:28,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:28,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:11:28,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961088009] [2020-12-22 06:11:28,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:11:28,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:28,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:11:28,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:11:28,161 INFO L87 Difference]: Start difference. First operand 21467 states and 40209 transitions. Second operand 3 states. [2020-12-22 06:11:30,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:30,219 INFO L93 Difference]: Finished difference Result 63401 states and 118751 transitions. [2020-12-22 06:11:30,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:11:30,219 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-12-22 06:11:30,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:30,303 INFO L225 Difference]: With dead ends: 63401 [2020-12-22 06:11:30,304 INFO L226 Difference]: Without dead ends: 41966 [2020-12-22 06:11:30,342 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 06:11:30,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41966 states. [2020-12-22 06:11:31,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41966 to 21343. [2020-12-22 06:11:31,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21343 states. [2020-12-22 06:11:31,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21343 states to 21343 states and 39961 transitions. [2020-12-22 06:11:31,613 INFO L78 Accepts]: Start accepts. Automaton has 21343 states and 39961 transitions. Word has length 56 [2020-12-22 06:11:31,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:31,614 INFO L481 AbstractCegarLoop]: Abstraction has 21343 states and 39961 transitions. [2020-12-22 06:11:31,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:11:31,614 INFO L276 IsEmpty]: Start isEmpty. Operand 21343 states and 39961 transitions. [2020-12-22 06:11:31,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 06:11:31,616 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:31,616 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 06:11:31,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:11:31,616 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 06:11:31,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:31,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1697296617, now seen corresponding path program 1 times [2020-12-22 06:11:31,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:31,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409701032] [2020-12-22 06:11:31,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:31,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:31,699 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 06:11:31,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409701032] [2020-12-22 06:11:31,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:31,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:11:31,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760275591] [2020-12-22 06:11:31,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:11:31,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:31,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:11:31,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:11:31,702 INFO L87 Difference]: Start difference. First operand 21343 states and 39961 transitions. Second operand 5 states. [2020-12-22 06:11:35,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:35,167 INFO L93 Difference]: Finished difference Result 51194 states and 95685 transitions. [2020-12-22 06:11:35,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:11:35,167 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 56 [2020-12-22 06:11:35,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:35,228 INFO L225 Difference]: With dead ends: 51194 [2020-12-22 06:11:35,228 INFO L226 Difference]: Without dead ends: 29885 [2020-12-22 06:11:35,250 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 06:11:35,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29885 states. [2020-12-22 06:11:36,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29885 to 29467. [2020-12-22 06:11:36,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29467 states. [2020-12-22 06:11:36,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29467 states to 29467 states and 54728 transitions. [2020-12-22 06:11:36,559 INFO L78 Accepts]: Start accepts. Automaton has 29467 states and 54728 transitions. Word has length 56 [2020-12-22 06:11:36,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:36,559 INFO L481 AbstractCegarLoop]: Abstraction has 29467 states and 54728 transitions. [2020-12-22 06:11:36,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:11:36,559 INFO L276 IsEmpty]: Start isEmpty. Operand 29467 states and 54728 transitions. [2020-12-22 06:11:36,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 06:11:36,561 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:36,561 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] [2020-12-22 06:11:36,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:11:36,562 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 06:11:36,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:36,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1409951242, now seen corresponding path program 1 times [2020-12-22 06:11:36,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:36,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880838693] [2020-12-22 06:11:36,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:36,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:36,646 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 06:11:36,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880838693] [2020-12-22 06:11:36,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:36,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:11:36,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098168372] [2020-12-22 06:11:36,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:11:36,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:36,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:11:36,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:11:36,648 INFO L87 Difference]: Start difference. First operand 29467 states and 54728 transitions. Second operand 5 states. [2020-12-22 06:11:39,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:39,508 INFO L93 Difference]: Finished difference Result 87072 states and 161828 transitions. [2020-12-22 06:11:39,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:11:39,509 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-12-22 06:11:39,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:39,634 INFO L225 Difference]: With dead ends: 87072 [2020-12-22 06:11:39,635 INFO L226 Difference]: Without dead ends: 57645 [2020-12-22 06:11:39,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:11:39,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57645 states. [2020-12-22 06:11:41,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57645 to 29467. [2020-12-22 06:11:41,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29467 states. [2020-12-22 06:11:41,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29467 states to 29467 states and 54617 transitions. [2020-12-22 06:11:41,082 INFO L78 Accepts]: Start accepts. Automaton has 29467 states and 54617 transitions. Word has length 59 [2020-12-22 06:11:41,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:41,083 INFO L481 AbstractCegarLoop]: Abstraction has 29467 states and 54617 transitions. [2020-12-22 06:11:41,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:11:41,083 INFO L276 IsEmpty]: Start isEmpty. Operand 29467 states and 54617 transitions. [2020-12-22 06:11:41,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 06:11:41,085 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:41,085 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 06:11:41,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:11:41,085 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 06:11:41,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:41,086 INFO L82 PathProgramCache]: Analyzing trace with hash 939150757, now seen corresponding path program 1 times [2020-12-22 06:11:41,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:41,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657063196] [2020-12-22 06:11:41,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:41,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:41,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:11:41,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657063196] [2020-12-22 06:11:41,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:41,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:11:41,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343766432] [2020-12-22 06:11:41,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:11:41,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:41,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:11:41,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:11:41,167 INFO L87 Difference]: Start difference. First operand 29467 states and 54617 transitions. Second operand 5 states. [2020-12-22 06:11:50,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:50,848 INFO L93 Difference]: Finished difference Result 250132 states and 464903 transitions. [2020-12-22 06:11:50,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:11:50,849 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-12-22 06:11:50,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:51,350 INFO L225 Difference]: With dead ends: 250132 [2020-12-22 06:11:51,350 INFO L226 Difference]: Without dead ends: 220724 [2020-12-22 06:11:51,430 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 06:11:51,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220724 states. [2020-12-22 06:11:54,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220724 to 56693. [2020-12-22 06:11:54,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56693 states. [2020-12-22 06:11:55,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56693 states to 56693 states and 105035 transitions. [2020-12-22 06:11:55,065 INFO L78 Accepts]: Start accepts. Automaton has 56693 states and 105035 transitions. Word has length 60 [2020-12-22 06:11:55,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:55,065 INFO L481 AbstractCegarLoop]: Abstraction has 56693 states and 105035 transitions. [2020-12-22 06:11:55,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:11:55,066 INFO L276 IsEmpty]: Start isEmpty. Operand 56693 states and 105035 transitions. [2020-12-22 06:11:55,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 06:11:55,067 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:55,067 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 06:11:55,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:11:55,067 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 06:11:55,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:55,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1600221201, now seen corresponding path program 1 times [2020-12-22 06:11:55,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:55,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207687361] [2020-12-22 06:11:55,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:55,136 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 06:11:55,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207687361] [2020-12-22 06:11:55,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:55,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:11:55,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978066137] [2020-12-22 06:11:55,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:11:55,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:55,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:11:55,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:11:55,138 INFO L87 Difference]: Start difference. First operand 56693 states and 105035 transitions. Second operand 3 states. [2020-12-22 06:11:59,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:59,664 INFO L93 Difference]: Finished difference Result 167892 states and 311365 transitions. [2020-12-22 06:11:59,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:11:59,665 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-12-22 06:11:59,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:59,889 INFO L225 Difference]: With dead ends: 167892 [2020-12-22 06:11:59,890 INFO L226 Difference]: Without dead ends: 111236 [2020-12-22 06:11:59,950 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 06:12:00,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111236 states. [2020-12-22 06:12:02,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111236 to 56439. [2020-12-22 06:12:02,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56439 states. [2020-12-22 06:12:02,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56439 states to 56439 states and 104534 transitions. [2020-12-22 06:12:02,598 INFO L78 Accepts]: Start accepts. Automaton has 56439 states and 104534 transitions. Word has length 61 [2020-12-22 06:12:02,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:12:02,598 INFO L481 AbstractCegarLoop]: Abstraction has 56439 states and 104534 transitions. [2020-12-22 06:12:02,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:12:02,598 INFO L276 IsEmpty]: Start isEmpty. Operand 56439 states and 104534 transitions. [2020-12-22 06:12:02,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 06:12:02,599 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:12:02,599 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] [2020-12-22 06:12:02,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:12:02,600 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 06:12:02,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:12:02,600 INFO L82 PathProgramCache]: Analyzing trace with hash -450535383, now seen corresponding path program 1 times [2020-12-22 06:12:02,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:12:02,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309651297] [2020-12-22 06:12:02,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:12:02,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:12:02,663 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 06:12:02,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309651297] [2020-12-22 06:12:02,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:12:02,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:12:02,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91793887] [2020-12-22 06:12:02,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:12:02,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:12:02,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:12:02,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:12:02,666 INFO L87 Difference]: Start difference. First operand 56439 states and 104534 transitions. Second operand 3 states. [2020-12-22 06:12:07,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:12:07,027 INFO L93 Difference]: Finished difference Result 167391 states and 310392 transitions. [2020-12-22 06:12:07,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:12:07,028 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-22 06:12:07,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:12:07,234 INFO L225 Difference]: With dead ends: 167391 [2020-12-22 06:12:07,235 INFO L226 Difference]: Without dead ends: 110995 [2020-12-22 06:12:07,462 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 06:12:07,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110995 states. [2020-12-22 06:12:09,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110995 to 56327. [2020-12-22 06:12:10,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56327 states. [2020-12-22 06:12:10,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56327 states to 56327 states and 104198 transitions. [2020-12-22 06:12:10,092 INFO L78 Accepts]: Start accepts. Automaton has 56327 states and 104198 transitions. Word has length 65 [2020-12-22 06:12:10,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:12:10,093 INFO L481 AbstractCegarLoop]: Abstraction has 56327 states and 104198 transitions. [2020-12-22 06:12:10,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:12:10,098 INFO L276 IsEmpty]: Start isEmpty. Operand 56327 states and 104198 transitions. [2020-12-22 06:12:10,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 06:12:10,100 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:12:10,100 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:12:10,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:12:10,100 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 06:12:10,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:12:10,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1412389714, now seen corresponding path program 1 times [2020-12-22 06:12:10,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:12:10,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704744134] [2020-12-22 06:12:10,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:12:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:12:10,175 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 06:12:10,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704744134] [2020-12-22 06:12:10,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:12:10,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:12:10,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708143434] [2020-12-22 06:12:10,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:12:10,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:12:10,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:12:10,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:12:10,177 INFO L87 Difference]: Start difference. First operand 56327 states and 104198 transitions. Second operand 5 states. [2020-12-22 06:12:25,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:12:25,722 INFO L93 Difference]: Finished difference Result 474798 states and 881751 transitions. [2020-12-22 06:12:25,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:12:25,722 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2020-12-22 06:12:25,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:12:26,926 INFO L225 Difference]: With dead ends: 474798 [2020-12-22 06:12:26,926 INFO L226 Difference]: Without dead ends: 418525 [2020-12-22 06:12:27,070 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 06:12:27,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418525 states. [2020-12-22 06:12:34,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418525 to 109723. [2020-12-22 06:12:34,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109723 states. [2020-12-22 06:12:34,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109723 states to 109723 states and 202872 transitions. [2020-12-22 06:12:34,291 INFO L78 Accepts]: Start accepts. Automaton has 109723 states and 202872 transitions. Word has length 66 [2020-12-22 06:12:34,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:12:34,291 INFO L481 AbstractCegarLoop]: Abstraction has 109723 states and 202872 transitions. [2020-12-22 06:12:34,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:12:34,291 INFO L276 IsEmpty]: Start isEmpty. Operand 109723 states and 202872 transitions. [2020-12-22 06:12:34,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 06:12:34,293 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:12:34,293 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:12:34,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:12:34,293 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 06:12:34,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:12:34,294 INFO L82 PathProgramCache]: Analyzing trace with hash 2020145731, now seen corresponding path program 1 times [2020-12-22 06:12:34,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:12:34,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171194584] [2020-12-22 06:12:34,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:12:34,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:12:34,357 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 06:12:34,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171194584] [2020-12-22 06:12:34,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:12:34,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:12:34,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579441689] [2020-12-22 06:12:34,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:12:34,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:12:34,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:12:34,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:12:34,590 INFO L87 Difference]: Start difference. First operand 109723 states and 202872 transitions. Second operand 3 states. [2020-12-22 06:12:43,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:12:43,442 INFO L93 Difference]: Finished difference Result 325466 states and 602828 transitions. [2020-12-22 06:12:43,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:12:43,443 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-12-22 06:12:43,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:12:44,137 INFO L225 Difference]: With dead ends: 325466 [2020-12-22 06:12:44,137 INFO L226 Difference]: Without dead ends: 215793 [2020-12-22 06:12:44,241 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 06:12:44,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215793 states. [2020-12-22 06:12:49,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215793 to 109615. [2020-12-22 06:12:49,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109615 states. [2020-12-22 06:12:49,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109615 states to 109615 states and 202332 transitions. [2020-12-22 06:12:49,853 INFO L78 Accepts]: Start accepts. Automaton has 109615 states and 202332 transitions. Word has length 71 [2020-12-22 06:12:49,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:12:49,853 INFO L481 AbstractCegarLoop]: Abstraction has 109615 states and 202332 transitions. [2020-12-22 06:12:49,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:12:49,853 INFO L276 IsEmpty]: Start isEmpty. Operand 109615 states and 202332 transitions. [2020-12-22 06:12:49,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 06:12:49,855 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:12:49,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:12:49,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 06:12:49,855 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 06:12:49,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:12:49,856 INFO L82 PathProgramCache]: Analyzing trace with hash -789879736, now seen corresponding path program 1 times [2020-12-22 06:12:49,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:12:49,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629513500] [2020-12-22 06:12:49,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:12:49,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:12:49,929 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 06:12:49,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629513500] [2020-12-22 06:12:49,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:12:49,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:12:49,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428782297] [2020-12-22 06:12:49,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:12:49,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:12:49,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:12:49,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:12:49,931 INFO L87 Difference]: Start difference. First operand 109615 states and 202332 transitions. Second operand 5 states. [2020-12-22 06:13:23,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:13:23,062 INFO L93 Difference]: Finished difference Result 930059 states and 1725269 transitions. [2020-12-22 06:13:23,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:13:23,062 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-12-22 06:13:23,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:13:25,584 INFO L225 Difference]: With dead ends: 930059 [2020-12-22 06:13:25,584 INFO L226 Difference]: Without dead ends: 820497 [2020-12-22 06:13:25,895 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 06:13:27,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820497 states. [2020-12-22 06:13:42,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820497 to 215031. [2020-12-22 06:13:42,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215031 states. [2020-12-22 06:13:42,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215031 states to 215031 states and 396566 transitions. [2020-12-22 06:13:42,956 INFO L78 Accepts]: Start accepts. Automaton has 215031 states and 396566 transitions. Word has length 73 [2020-12-22 06:13:42,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:13:42,956 INFO L481 AbstractCegarLoop]: Abstraction has 215031 states and 396566 transitions. [2020-12-22 06:13:42,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:13:42,957 INFO L276 IsEmpty]: Start isEmpty. Operand 215031 states and 396566 transitions. [2020-12-22 06:13:42,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 06:13:42,958 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:13:42,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:13:42,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 06:13:42,958 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 06:13:42,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:13:42,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1804375633, now seen corresponding path program 1 times [2020-12-22 06:13:42,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:13:42,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801429466] [2020-12-22 06:13:42,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:13:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:13:43,078 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 06:13:43,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801429466] [2020-12-22 06:13:43,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:13:43,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:13:43,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107385920] [2020-12-22 06:13:43,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:13:43,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:13:43,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:13:43,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:13:43,082 INFO L87 Difference]: Start difference. First operand 215031 states and 396566 transitions. Second operand 4 states. [2020-12-22 06:14:01,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:01,896 INFO L93 Difference]: Finished difference Result 611630 states and 1131303 transitions. [2020-12-22 06:14:01,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:14:01,897 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 74 [2020-12-22 06:14:01,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:02,935 INFO L225 Difference]: With dead ends: 611630 [2020-12-22 06:14:02,935 INFO L226 Difference]: Without dead ends: 396658 [2020-12-22 06:14:03,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:14:03,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396658 states. [2020-12-22 06:14:15,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396658 to 215031. [2020-12-22 06:14:15,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215031 states. [2020-12-22 06:14:16,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215031 states to 215031 states and 396077 transitions. [2020-12-22 06:14:16,019 INFO L78 Accepts]: Start accepts. Automaton has 215031 states and 396077 transitions. Word has length 74 [2020-12-22 06:14:16,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:16,019 INFO L481 AbstractCegarLoop]: Abstraction has 215031 states and 396077 transitions. [2020-12-22 06:14:16,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:14:16,019 INFO L276 IsEmpty]: Start isEmpty. Operand 215031 states and 396077 transitions. [2020-12-22 06:14:16,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 06:14:16,020 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:16,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:14:16,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 06:14:16,022 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 06:14:16,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:16,023 INFO L82 PathProgramCache]: Analyzing trace with hash -959496149, now seen corresponding path program 1 times [2020-12-22 06:14:16,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:16,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64934646] [2020-12-22 06:14:16,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:16,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:16,121 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 06:14:16,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64934646] [2020-12-22 06:14:16,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:16,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:14:16,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907662789] [2020-12-22 06:14:16,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:14:16,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:16,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:14:16,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:14:16,123 INFO L87 Difference]: Start difference. First operand 215031 states and 396077 transitions. Second operand 4 states.