/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 09:13:17,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 09:13:17,081 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 09:13:17,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 09:13:17,130 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 09:13:17,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 09:13:17,138 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 09:13:17,147 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 09:13:17,150 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 09:13:17,158 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 09:13:17,159 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 09:13:17,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 09:13:17,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 09:13:17,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 09:13:17,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 09:13:17,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 09:13:17,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 09:13:17,172 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 09:13:17,179 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 09:13:17,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 09:13:17,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 09:13:17,191 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 09:13:17,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 09:13:17,196 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 09:13:17,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 09:13:17,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 09:13:17,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 09:13:17,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 09:13:17,218 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 09:13:17,264 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 09:13:17,265 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 09:13:17,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 09:13:17,266 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 09:13:17,267 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 09:13:17,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 09:13:17,267 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 09:13:17,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 09:13:17,268 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 09:13:17,268 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 09:13:17,268 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 09:13:17,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 09:13:17,268 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 09:13:17,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 09:13:17,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 09:13:17,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 09:13:17,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 09:13:17,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:13:17,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 09:13:17,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 09:13:17,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 09:13:17,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 09:13:17,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 09:13:17,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 09:13:17,271 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 09:13:17,271 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 09:13:17,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 09:13:17,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 09:13:17,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 09:13:17,665 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 09:13:17,666 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 09:13:17,667 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-12-22 09:13:17,751 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/300720306/790560aa75bd4af48e74e77752f812b4/FLAG631e6edd0 [2020-12-22 09:13:18,608 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 09:13:18,608 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-12-22 09:13:18,635 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/300720306/790560aa75bd4af48e74e77752f812b4/FLAG631e6edd0 [2020-12-22 09:13:18,782 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/300720306/790560aa75bd4af48e74e77752f812b4 [2020-12-22 09:13:18,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 09:13:18,788 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 09:13:18,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 09:13:18,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 09:13:18,794 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 09:13:18,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:13:18" (1/1) ... [2020-12-22 09:13:18,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5234e7fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:18, skipping insertion in model container [2020-12-22 09:13:18,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:13:18" (1/1) ... [2020-12-22 09:13:18,806 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 09:13:18,918 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 09:13:19,346 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[22829,22842] [2020-12-22 09:13:19,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:13:19,609 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 09:13:19,786 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[22829,22842] [2020-12-22 09:13:19,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:13:19,924 INFO L208 MainTranslator]: Completed translation [2020-12-22 09:13:19,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:19 WrapperNode [2020-12-22 09:13:19,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 09:13:19,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 09:13:19,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 09:13:19,927 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 09:13:19,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:19" (1/1) ... [2020-12-22 09:13:19,963 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:19" (1/1) ... [2020-12-22 09:13:20,072 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 09:13:20,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 09:13:20,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 09:13:20,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 09:13:20,083 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:19" (1/1) ... [2020-12-22 09:13:20,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:19" (1/1) ... [2020-12-22 09:13:20,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:19" (1/1) ... [2020-12-22 09:13:20,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:19" (1/1) ... [2020-12-22 09:13:20,121 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:19" (1/1) ... [2020-12-22 09:13:20,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:19" (1/1) ... [2020-12-22 09:13:20,159 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:19" (1/1) ... [2020-12-22 09:13:20,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 09:13:20,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 09:13:20,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 09:13:20,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 09:13:20,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:13:20,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 09:13:20,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 09:13:20,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 09:13:20,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 09:13:22,849 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 09:13:22,849 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 09:13:22,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:13:22 BoogieIcfgContainer [2020-12-22 09:13:22,852 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 09:13:22,854 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 09:13:22,854 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 09:13:22,858 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 09:13:22,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:13:18" (1/3) ... [2020-12-22 09:13:22,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b6a3b33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:13:22, skipping insertion in model container [2020-12-22 09:13:22,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:19" (2/3) ... [2020-12-22 09:13:22,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b6a3b33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:13:22, skipping insertion in model container [2020-12-22 09:13:22,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:13:22" (3/3) ... [2020-12-22 09:13:22,862 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-12-22 09:13:22,868 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 09:13:22,874 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 09:13:22,892 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 09:13:22,924 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 09:13:22,925 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 09:13:22,925 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 09:13:22,925 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 09:13:22,925 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 09:13:22,925 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 09:13:22,925 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 09:13:22,926 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 09:13:22,956 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states. [2020-12-22 09:13:22,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-12-22 09:13:22,987 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:22,988 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:13:22,989 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:22,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:22,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1014698446, now seen corresponding path program 1 times [2020-12-22 09:13:23,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:23,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106632771] [2020-12-22 09:13:23,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:23,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:23,779 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 09:13:23,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106632771] [2020-12-22 09:13:23,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:23,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:13:23,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99145711] [2020-12-22 09:13:23,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:13:23,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:23,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:13:23,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:13:23,811 INFO L87 Difference]: Start difference. First operand 770 states. Second operand 3 states. [2020-12-22 09:13:24,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:13:24,030 INFO L93 Difference]: Finished difference Result 1200 states and 2139 transitions. [2020-12-22 09:13:24,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:13:24,032 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 213 [2020-12-22 09:13:24,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:13:24,078 INFO L225 Difference]: With dead ends: 1200 [2020-12-22 09:13:24,078 INFO L226 Difference]: Without dead ends: 972 [2020-12-22 09:13:24,086 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 09:13:24,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2020-12-22 09:13:24,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 970. [2020-12-22 09:13:24,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-12-22 09:13:24,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1682 transitions. [2020-12-22 09:13:24,214 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1682 transitions. Word has length 213 [2020-12-22 09:13:24,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:13:24,218 INFO L481 AbstractCegarLoop]: Abstraction has 970 states and 1682 transitions. [2020-12-22 09:13:24,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:13:24,219 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1682 transitions. [2020-12-22 09:13:24,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-12-22 09:13:24,230 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:24,231 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:13:24,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 09:13:24,232 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:24,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:24,233 INFO L82 PathProgramCache]: Analyzing trace with hash 327914487, now seen corresponding path program 1 times [2020-12-22 09:13:24,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:24,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609493503] [2020-12-22 09:13:24,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:24,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:24,656 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 09:13:24,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609493503] [2020-12-22 09:13:24,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:24,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:13:24,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528593838] [2020-12-22 09:13:24,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:13:24,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:24,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:13:24,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:13:24,666 INFO L87 Difference]: Start difference. First operand 970 states and 1682 transitions. Second operand 3 states. [2020-12-22 09:13:24,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:13:24,765 INFO L93 Difference]: Finished difference Result 1790 states and 3066 transitions. [2020-12-22 09:13:24,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:13:24,766 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2020-12-22 09:13:24,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:13:24,787 INFO L225 Difference]: With dead ends: 1790 [2020-12-22 09:13:24,787 INFO L226 Difference]: Without dead ends: 1368 [2020-12-22 09:13:24,794 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 09:13:24,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2020-12-22 09:13:24,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 1366. [2020-12-22 09:13:24,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1366 states. [2020-12-22 09:13:24,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 2349 transitions. [2020-12-22 09:13:24,890 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 2349 transitions. Word has length 217 [2020-12-22 09:13:24,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:13:24,893 INFO L481 AbstractCegarLoop]: Abstraction has 1366 states and 2349 transitions. [2020-12-22 09:13:24,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:13:24,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 2349 transitions. [2020-12-22 09:13:24,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-12-22 09:13:24,900 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:24,901 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:13:24,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 09:13:24,901 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:24,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:24,905 INFO L82 PathProgramCache]: Analyzing trace with hash 279788732, now seen corresponding path program 1 times [2020-12-22 09:13:24,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:24,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22198667] [2020-12-22 09:13:24,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:25,249 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 09:13:25,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22198667] [2020-12-22 09:13:25,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:25,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:13:25,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13546223] [2020-12-22 09:13:25,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:13:25,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:25,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:13:25,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:13:25,263 INFO L87 Difference]: Start difference. First operand 1366 states and 2349 transitions. Second operand 3 states. [2020-12-22 09:13:25,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:13:25,352 INFO L93 Difference]: Finished difference Result 2954 states and 5023 transitions. [2020-12-22 09:13:25,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:13:25,352 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 221 [2020-12-22 09:13:25,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:13:25,364 INFO L225 Difference]: With dead ends: 2954 [2020-12-22 09:13:25,365 INFO L226 Difference]: Without dead ends: 2136 [2020-12-22 09:13:25,368 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 09:13:25,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2136 states. [2020-12-22 09:13:25,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2136 to 2134. [2020-12-22 09:13:25,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2134 states. [2020-12-22 09:13:25,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2134 states to 2134 states and 3637 transitions. [2020-12-22 09:13:25,454 INFO L78 Accepts]: Start accepts. Automaton has 2134 states and 3637 transitions. Word has length 221 [2020-12-22 09:13:25,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:13:25,455 INFO L481 AbstractCegarLoop]: Abstraction has 2134 states and 3637 transitions. [2020-12-22 09:13:25,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:13:25,455 INFO L276 IsEmpty]: Start isEmpty. Operand 2134 states and 3637 transitions. [2020-12-22 09:13:25,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-12-22 09:13:25,460 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:25,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:13:25,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 09:13:25,461 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:25,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:25,462 INFO L82 PathProgramCache]: Analyzing trace with hash 591971201, now seen corresponding path program 1 times [2020-12-22 09:13:25,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:25,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552375315] [2020-12-22 09:13:25,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:25,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:25,687 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 09:13:25,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552375315] [2020-12-22 09:13:25,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:25,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:13:25,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793451735] [2020-12-22 09:13:25,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:13:25,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:25,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:13:25,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:13:25,690 INFO L87 Difference]: Start difference. First operand 2134 states and 3637 transitions. Second operand 3 states. [2020-12-22 09:13:25,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:13:25,848 INFO L93 Difference]: Finished difference Result 5210 states and 8799 transitions. [2020-12-22 09:13:25,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:13:25,849 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 225 [2020-12-22 09:13:25,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:13:25,873 INFO L225 Difference]: With dead ends: 5210 [2020-12-22 09:13:25,873 INFO L226 Difference]: Without dead ends: 3624 [2020-12-22 09:13:25,877 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 09:13:25,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3624 states. [2020-12-22 09:13:26,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3624 to 3622. [2020-12-22 09:13:26,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3622 states. [2020-12-22 09:13:26,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 6121 transitions. [2020-12-22 09:13:26,113 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 6121 transitions. Word has length 225 [2020-12-22 09:13:26,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:13:26,114 INFO L481 AbstractCegarLoop]: Abstraction has 3622 states and 6121 transitions. [2020-12-22 09:13:26,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:13:26,114 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 6121 transitions. [2020-12-22 09:13:26,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-12-22 09:13:26,120 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:26,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:13:26,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 09:13:26,121 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:26,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:26,122 INFO L82 PathProgramCache]: Analyzing trace with hash -62749882, now seen corresponding path program 1 times [2020-12-22 09:13:26,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:26,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68694690] [2020-12-22 09:13:26,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:26,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:26,359 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 09:13:26,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68694690] [2020-12-22 09:13:26,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:26,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:13:26,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246831921] [2020-12-22 09:13:26,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:13:26,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:26,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:13:26,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:13:26,364 INFO L87 Difference]: Start difference. First operand 3622 states and 6121 transitions. Second operand 3 states. [2020-12-22 09:13:26,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:13:26,663 INFO L93 Difference]: Finished difference Result 9578 states and 16075 transitions. [2020-12-22 09:13:26,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:13:26,666 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 229 [2020-12-22 09:13:26,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:13:26,702 INFO L225 Difference]: With dead ends: 9578 [2020-12-22 09:13:26,702 INFO L226 Difference]: Without dead ends: 6504 [2020-12-22 09:13:26,711 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 09:13:26,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6504 states. [2020-12-22 09:13:27,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6504 to 6502. [2020-12-22 09:13:27,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6502 states. [2020-12-22 09:13:27,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6502 states to 6502 states and 10905 transitions. [2020-12-22 09:13:27,037 INFO L78 Accepts]: Start accepts. Automaton has 6502 states and 10905 transitions. Word has length 229 [2020-12-22 09:13:27,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:13:27,038 INFO L481 AbstractCegarLoop]: Abstraction has 6502 states and 10905 transitions. [2020-12-22 09:13:27,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:13:27,038 INFO L276 IsEmpty]: Start isEmpty. Operand 6502 states and 10905 transitions. [2020-12-22 09:13:27,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-12-22 09:13:27,045 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:27,045 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:13:27,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 09:13:27,046 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:27,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:27,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1568385269, now seen corresponding path program 1 times [2020-12-22 09:13:27,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:27,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531949149] [2020-12-22 09:13:27,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:27,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:27,405 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 09:13:27,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531949149] [2020-12-22 09:13:27,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:27,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:13:27,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562805817] [2020-12-22 09:13:27,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:13:27,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:27,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:13:27,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:13:27,408 INFO L87 Difference]: Start difference. First operand 6502 states and 10905 transitions. Second operand 7 states. [2020-12-22 09:13:29,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:13:29,621 INFO L93 Difference]: Finished difference Result 39709 states and 66609 transitions. [2020-12-22 09:13:29,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 09:13:29,621 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 233 [2020-12-22 09:13:29,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:13:29,754 INFO L225 Difference]: With dead ends: 39709 [2020-12-22 09:13:29,755 INFO L226 Difference]: Without dead ends: 33755 [2020-12-22 09:13:29,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-22 09:13:29,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33755 states. [2020-12-22 09:13:30,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33755 to 12299. [2020-12-22 09:13:30,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12299 states. [2020-12-22 09:13:31,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12299 states to 12299 states and 20544 transitions. [2020-12-22 09:13:31,026 INFO L78 Accepts]: Start accepts. Automaton has 12299 states and 20544 transitions. Word has length 233 [2020-12-22 09:13:31,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:13:31,026 INFO L481 AbstractCegarLoop]: Abstraction has 12299 states and 20544 transitions. [2020-12-22 09:13:31,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:13:31,027 INFO L276 IsEmpty]: Start isEmpty. Operand 12299 states and 20544 transitions. [2020-12-22 09:13:31,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-12-22 09:13:31,041 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:31,041 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:13:31,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 09:13:31,042 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:31,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:31,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1446922808, now seen corresponding path program 1 times [2020-12-22 09:13:31,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:31,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168346047] [2020-12-22 09:13:31,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:31,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:13:31,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168346047] [2020-12-22 09:13:31,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:31,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:13:31,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751034528] [2020-12-22 09:13:31,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:13:31,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:31,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:13:31,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:13:31,391 INFO L87 Difference]: Start difference. First operand 12299 states and 20544 transitions. Second operand 4 states. [2020-12-22 09:13:32,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:13:32,768 INFO L93 Difference]: Finished difference Result 32980 states and 55178 transitions. [2020-12-22 09:13:32,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:13:32,768 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 234 [2020-12-22 09:13:32,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:13:32,822 INFO L225 Difference]: With dead ends: 32980 [2020-12-22 09:13:32,823 INFO L226 Difference]: Without dead ends: 21229 [2020-12-22 09:13:32,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 09:13:32,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21229 states. [2020-12-22 09:13:34,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21229 to 18275. [2020-12-22 09:13:34,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18275 states. [2020-12-22 09:13:34,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18275 states to 18275 states and 30540 transitions. [2020-12-22 09:13:34,225 INFO L78 Accepts]: Start accepts. Automaton has 18275 states and 30540 transitions. Word has length 234 [2020-12-22 09:13:34,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:13:34,226 INFO L481 AbstractCegarLoop]: Abstraction has 18275 states and 30540 transitions. [2020-12-22 09:13:34,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:13:34,226 INFO L276 IsEmpty]: Start isEmpty. Operand 18275 states and 30540 transitions. [2020-12-22 09:13:34,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-12-22 09:13:34,243 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:34,244 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:13:34,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 09:13:34,244 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:34,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:34,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1971995790, now seen corresponding path program 1 times [2020-12-22 09:13:34,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:34,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858034248] [2020-12-22 09:13:34,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:34,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:34,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:13:34,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858034248] [2020-12-22 09:13:34,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:34,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:13:34,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476473329] [2020-12-22 09:13:34,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:13:34,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:34,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:13:34,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:13:34,500 INFO L87 Difference]: Start difference. First operand 18275 states and 30540 transitions. Second operand 4 states. [2020-12-22 09:13:36,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:13:36,038 INFO L93 Difference]: Finished difference Result 49280 states and 82392 transitions. [2020-12-22 09:13:36,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:13:36,039 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 235 [2020-12-22 09:13:36,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:13:36,121 INFO L225 Difference]: With dead ends: 49280 [2020-12-22 09:13:36,122 INFO L226 Difference]: Without dead ends: 31553 [2020-12-22 09:13:36,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 09:13:36,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31553 states. [2020-12-22 09:13:37,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31553 to 27194. [2020-12-22 09:13:37,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27194 states. [2020-12-22 09:13:37,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27194 states to 27194 states and 45385 transitions. [2020-12-22 09:13:37,776 INFO L78 Accepts]: Start accepts. Automaton has 27194 states and 45385 transitions. Word has length 235 [2020-12-22 09:13:37,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:13:37,777 INFO L481 AbstractCegarLoop]: Abstraction has 27194 states and 45385 transitions. [2020-12-22 09:13:37,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:13:37,777 INFO L276 IsEmpty]: Start isEmpty. Operand 27194 states and 45385 transitions. [2020-12-22 09:13:37,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-12-22 09:13:37,793 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:37,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:13:37,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 09:13:37,793 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:37,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:37,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1509627090, now seen corresponding path program 1 times [2020-12-22 09:13:37,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:37,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702964925] [2020-12-22 09:13:37,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:37,979 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 09:13:37,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702964925] [2020-12-22 09:13:37,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:37,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:13:37,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756412145] [2020-12-22 09:13:37,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:13:37,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:37,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:13:37,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:13:37,982 INFO L87 Difference]: Start difference. First operand 27194 states and 45385 transitions. Second operand 3 states. [2020-12-22 09:13:40,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:13:40,063 INFO L93 Difference]: Finished difference Result 54830 states and 91504 transitions. [2020-12-22 09:13:40,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:13:40,064 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 235 [2020-12-22 09:13:40,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:13:40,159 INFO L225 Difference]: With dead ends: 54830 [2020-12-22 09:13:40,159 INFO L226 Difference]: Without dead ends: 40740 [2020-12-22 09:13:40,187 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 09:13:40,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40740 states. [2020-12-22 09:13:42,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40740 to 40738. [2020-12-22 09:13:42,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40738 states. [2020-12-22 09:13:42,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40738 states to 40738 states and 67782 transitions. [2020-12-22 09:13:42,169 INFO L78 Accepts]: Start accepts. Automaton has 40738 states and 67782 transitions. Word has length 235 [2020-12-22 09:13:42,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:13:42,170 INFO L481 AbstractCegarLoop]: Abstraction has 40738 states and 67782 transitions. [2020-12-22 09:13:42,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:13:42,171 INFO L276 IsEmpty]: Start isEmpty. Operand 40738 states and 67782 transitions. [2020-12-22 09:13:42,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-12-22 09:13:42,190 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:42,191 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:13:42,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 09:13:42,191 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:42,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:42,192 INFO L82 PathProgramCache]: Analyzing trace with hash -2133047208, now seen corresponding path program 1 times [2020-12-22 09:13:42,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:42,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961718066] [2020-12-22 09:13:42,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:42,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:13:42,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961718066] [2020-12-22 09:13:42,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:42,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:13:42,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645380504] [2020-12-22 09:13:42,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:13:42,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:42,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:13:42,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:13:42,448 INFO L87 Difference]: Start difference. First operand 40738 states and 67782 transitions. Second operand 3 states. [2020-12-22 09:13:45,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:13:45,054 INFO L93 Difference]: Finished difference Result 76598 states and 127580 transitions. [2020-12-22 09:13:45,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:13:45,055 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 235 [2020-12-22 09:13:45,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:13:45,181 INFO L225 Difference]: With dead ends: 76598 [2020-12-22 09:13:45,181 INFO L226 Difference]: Without dead ends: 56156 [2020-12-22 09:13:45,227 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 09:13:45,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56156 states. [2020-12-22 09:13:48,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56156 to 56154. [2020-12-22 09:13:48,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56154 states. [2020-12-22 09:13:48,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56154 states to 56154 states and 93250 transitions. [2020-12-22 09:13:48,260 INFO L78 Accepts]: Start accepts. Automaton has 56154 states and 93250 transitions. Word has length 235 [2020-12-22 09:13:48,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:13:48,261 INFO L481 AbstractCegarLoop]: Abstraction has 56154 states and 93250 transitions. [2020-12-22 09:13:48,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:13:48,261 INFO L276 IsEmpty]: Start isEmpty. Operand 56154 states and 93250 transitions. [2020-12-22 09:13:48,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-12-22 09:13:48,271 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:48,271 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:13:48,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 09:13:48,272 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:48,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:48,272 INFO L82 PathProgramCache]: Analyzing trace with hash -678490366, now seen corresponding path program 1 times [2020-12-22 09:13:48,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:48,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276006458] [2020-12-22 09:13:48,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:48,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:48,437 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 09:13:48,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276006458] [2020-12-22 09:13:48,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:48,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:13:48,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064827821] [2020-12-22 09:13:48,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:13:48,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:48,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:13:48,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:13:48,440 INFO L87 Difference]: Start difference. First operand 56154 states and 93250 transitions. Second operand 3 states. [2020-12-22 09:13:51,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:13:51,780 INFO L93 Difference]: Finished difference Result 106486 states and 177060 transitions. [2020-12-22 09:13:51,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:13:51,780 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 235 [2020-12-22 09:13:51,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:13:51,889 INFO L225 Difference]: With dead ends: 106486 [2020-12-22 09:13:51,889 INFO L226 Difference]: Without dead ends: 77530 [2020-12-22 09:13:51,928 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 09:13:51,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77530 states. [2020-12-22 09:13:55,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77530 to 77528. [2020-12-22 09:13:55,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77528 states. [2020-12-22 09:13:55,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77528 states to 77528 states and 128573 transitions. [2020-12-22 09:13:55,812 INFO L78 Accepts]: Start accepts. Automaton has 77528 states and 128573 transitions. Word has length 235 [2020-12-22 09:13:55,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:13:55,813 INFO L481 AbstractCegarLoop]: Abstraction has 77528 states and 128573 transitions. [2020-12-22 09:13:55,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:13:55,813 INFO L276 IsEmpty]: Start isEmpty. Operand 77528 states and 128573 transitions. [2020-12-22 09:13:55,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-12-22 09:13:55,820 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:55,820 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:13:55,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 09:13:55,820 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:55,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:55,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1764769580, now seen corresponding path program 1 times [2020-12-22 09:13:55,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:55,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223103221] [2020-12-22 09:13:55,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:56,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:56,250 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 09:13:56,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223103221] [2020-12-22 09:13:56,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:56,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:13:56,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322480269] [2020-12-22 09:13:56,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:13:56,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:56,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:13:56,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:13:56,257 INFO L87 Difference]: Start difference. First operand 77528 states and 128573 transitions. Second operand 3 states. [2020-12-22 09:14:01,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:01,624 INFO L93 Difference]: Finished difference Result 169418 states and 281147 transitions. [2020-12-22 09:14:01,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:14:01,624 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 235 [2020-12-22 09:14:01,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:01,819 INFO L225 Difference]: With dead ends: 169418 [2020-12-22 09:14:01,820 INFO L226 Difference]: Without dead ends: 116801 [2020-12-22 09:14:01,878 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 09:14:02,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116801 states. [2020-12-22 09:14:07,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116801 to 116799. [2020-12-22 09:14:07,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116799 states. [2020-12-22 09:14:07,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116799 states to 116799 states and 193234 transitions. [2020-12-22 09:14:07,836 INFO L78 Accepts]: Start accepts. Automaton has 116799 states and 193234 transitions. Word has length 235 [2020-12-22 09:14:07,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:07,837 INFO L481 AbstractCegarLoop]: Abstraction has 116799 states and 193234 transitions. [2020-12-22 09:14:07,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:14:07,837 INFO L276 IsEmpty]: Start isEmpty. Operand 116799 states and 193234 transitions. [2020-12-22 09:14:07,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-12-22 09:14:07,840 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:07,840 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:14:07,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 09:14:07,841 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:07,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:07,841 INFO L82 PathProgramCache]: Analyzing trace with hash -715990826, now seen corresponding path program 1 times [2020-12-22 09:14:07,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:07,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242454310] [2020-12-22 09:14:07,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:08,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:08,251 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 09:14:08,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242454310] [2020-12-22 09:14:08,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:14:08,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:14:08,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964727973] [2020-12-22 09:14:08,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:14:08,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:08,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:14:08,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:14:08,254 INFO L87 Difference]: Start difference. First operand 116799 states and 193234 transitions. Second operand 3 states. [2020-12-22 09:14:16,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:16,168 INFO L93 Difference]: Finished difference Result 256282 states and 425633 transitions. [2020-12-22 09:14:16,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:14:16,168 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 235 [2020-12-22 09:14:16,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:16,454 INFO L225 Difference]: With dead ends: 256282 [2020-12-22 09:14:16,454 INFO L226 Difference]: Without dead ends: 176199 [2020-12-22 09:14:16,532 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 09:14:16,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176199 states. [2020-12-22 09:14:25,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176199 to 176197. [2020-12-22 09:14:25,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176197 states. [2020-12-22 09:14:25,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176197 states to 176197 states and 291283 transitions. [2020-12-22 09:14:25,762 INFO L78 Accepts]: Start accepts. Automaton has 176197 states and 291283 transitions. Word has length 235 [2020-12-22 09:14:25,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:25,762 INFO L481 AbstractCegarLoop]: Abstraction has 176197 states and 291283 transitions. [2020-12-22 09:14:25,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:14:25,762 INFO L276 IsEmpty]: Start isEmpty. Operand 176197 states and 291283 transitions. [2020-12-22 09:14:25,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-12-22 09:14:25,773 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:25,774 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:14:25,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 09:14:25,774 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:25,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:25,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1064831025, now seen corresponding path program 1 times [2020-12-22 09:14:25,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:25,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583010317] [2020-12-22 09:14:25,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:25,974 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 09:14:25,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583010317] [2020-12-22 09:14:25,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:14:25,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:14:25,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77999866] [2020-12-22 09:14:25,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:14:25,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:25,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:14:25,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:14:25,977 INFO L87 Difference]: Start difference. First operand 176197 states and 291283 transitions. Second operand 4 states.