/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.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 09:05:51,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 09:05:51,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 09:05:51,907 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 09:05:51,908 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 09:05:51,909 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 09:05:51,911 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 09:05:51,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 09:05:51,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 09:05:51,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 09:05:51,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 09:05:51,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 09:05:51,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 09:05:51,922 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 09:05:51,923 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 09:05:51,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 09:05:51,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 09:05:51,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 09:05:51,933 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 09:05:51,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 09:05:51,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 09:05:51,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 09:05:51,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 09:05:51,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 09:05:51,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 09:05:51,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 09:05:51,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 09:05:51,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 09:05:51,984 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 09:05:52,012 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 09:05:52,012 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 09:05:52,014 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 09:05:52,014 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 09:05:52,014 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 09:05:52,015 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 09:05:52,015 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 09:05:52,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 09:05:52,016 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 09:05:52,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 09:05:52,016 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 09:05:52,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 09:05:52,017 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 09:05:52,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 09:05:52,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 09:05:52,018 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 09:05:52,018 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 09:05:52,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:05:52,018 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 09:05:52,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 09:05:52,019 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 09:05:52,019 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 09:05:52,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 09:05:52,020 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 09:05:52,020 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 09:05:52,020 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 09:05:52,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 09:05:52,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 09:05:52,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 09:05:52,444 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 09:05:52,445 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 09:05:52,446 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-22 09:05:52,529 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/697e860d2/38b54fc154e2433ebf181cc3e678454a/FLAG4aca6f4fe [2020-12-22 09:05:53,338 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 09:05:53,340 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-22 09:05:53,356 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/697e860d2/38b54fc154e2433ebf181cc3e678454a/FLAG4aca6f4fe [2020-12-22 09:05:53,550 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/697e860d2/38b54fc154e2433ebf181cc3e678454a [2020-12-22 09:05:53,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 09:05:53,556 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 09:05:53,560 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 09:05:53,560 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 09:05:53,564 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 09:05:53,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:05:53" (1/1) ... [2020-12-22 09:05:53,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ab9a9a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:05:53, skipping insertion in model container [2020-12-22 09:05:53,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:05:53" (1/1) ... [2020-12-22 09:05:53,580 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 09:05:53,665 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 09:05:54,018 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.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[13086,13099] [2020-12-22 09:05:54,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:05:54,181 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 09:05:54,334 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.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[13086,13099] [2020-12-22 09:05:54,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:05:54,514 INFO L208 MainTranslator]: Completed translation [2020-12-22 09:05:54,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:05:54 WrapperNode [2020-12-22 09:05:54,515 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 09:05:54,517 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 09:05:54,517 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 09:05:54,517 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 09:05:54,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:05:54" (1/1) ... [2020-12-22 09:05:54,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:05:54" (1/1) ... [2020-12-22 09:05:54,653 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 09:05:54,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 09:05:54,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 09:05:54,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 09:05:54,665 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:05:54" (1/1) ... [2020-12-22 09:05:54,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:05:54" (1/1) ... [2020-12-22 09:05:54,677 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:05:54" (1/1) ... [2020-12-22 09:05:54,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:05:54" (1/1) ... [2020-12-22 09:05:54,711 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:05:54" (1/1) ... [2020-12-22 09:05:54,745 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:05:54" (1/1) ... [2020-12-22 09:05:54,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:05:54" (1/1) ... [2020-12-22 09:05:54,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 09:05:54,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 09:05:54,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 09:05:54,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 09:05:54,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:05:54" (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 09:05:54,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 09:05:54,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 09:05:54,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 09:05:54,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 09:05:56,288 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 09:05:56,289 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 09:05:56,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:05:56 BoogieIcfgContainer [2020-12-22 09:05:56,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 09:05:56,297 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 09:05:56,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 09:05:56,302 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 09:05:56,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:05:53" (1/3) ... [2020-12-22 09:05:56,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55529d0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:05:56, skipping insertion in model container [2020-12-22 09:05:56,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:05:54" (2/3) ... [2020-12-22 09:05:56,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55529d0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:05:56, skipping insertion in model container [2020-12-22 09:05:56,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:05:56" (3/3) ... [2020-12-22 09:05:56,308 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-22 09:05:56,316 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 09:05:56,322 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 09:05:56,350 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 09:05:56,403 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 09:05:56,403 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 09:05:56,403 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 09:05:56,403 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 09:05:56,404 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 09:05:56,404 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 09:05:56,404 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 09:05:56,404 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 09:05:56,441 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states. [2020-12-22 09:05:56,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 09:05:56,470 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:56,471 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] [2020-12-22 09:05:56,471 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:56,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:56,479 INFO L82 PathProgramCache]: Analyzing trace with hash -139604630, now seen corresponding path program 1 times [2020-12-22 09:05:56,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:56,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330312268] [2020-12-22 09:05:56,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:56,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:57,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:05:57,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330312268] [2020-12-22 09:05:57,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:57,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:05:57,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768927766] [2020-12-22 09:05:57,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:05:57,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:57,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:05:57,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:05:57,147 INFO L87 Difference]: Start difference. First operand 338 states. Second operand 3 states. [2020-12-22 09:05:57,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:57,290 INFO L93 Difference]: Finished difference Result 640 states and 1100 transitions. [2020-12-22 09:05:57,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:05:57,292 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-22 09:05:57,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:57,313 INFO L225 Difference]: With dead ends: 640 [2020-12-22 09:05:57,313 INFO L226 Difference]: Without dead ends: 477 [2020-12-22 09:05:57,317 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 09:05:57,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2020-12-22 09:05:57,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 474. [2020-12-22 09:05:57,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 474 states. [2020-12-22 09:05:57,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 789 transitions. [2020-12-22 09:05:57,436 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 789 transitions. Word has length 106 [2020-12-22 09:05:57,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:57,437 INFO L481 AbstractCegarLoop]: Abstraction has 474 states and 789 transitions. [2020-12-22 09:05:57,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:05:57,438 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 789 transitions. [2020-12-22 09:05:57,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-22 09:05:57,444 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:57,446 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] [2020-12-22 09:05:57,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 09:05:57,447 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:57,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:57,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1315500352, now seen corresponding path program 1 times [2020-12-22 09:05:57,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:57,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211479990] [2020-12-22 09:05:57,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:57,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:57,787 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 09:05:57,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211479990] [2020-12-22 09:05:57,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:57,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:05:57,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367863936] [2020-12-22 09:05:57,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:05:57,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:57,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:05:57,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:05:57,793 INFO L87 Difference]: Start difference. First operand 474 states and 789 transitions. Second operand 3 states. [2020-12-22 09:05:57,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:57,874 INFO L93 Difference]: Finished difference Result 1040 states and 1729 transitions. [2020-12-22 09:05:57,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:05:57,875 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 109 [2020-12-22 09:05:57,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:57,881 INFO L225 Difference]: With dead ends: 1040 [2020-12-22 09:05:57,881 INFO L226 Difference]: Without dead ends: 747 [2020-12-22 09:05:57,884 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 09:05:57,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2020-12-22 09:05:57,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 743. [2020-12-22 09:05:57,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-12-22 09:05:57,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1234 transitions. [2020-12-22 09:05:57,972 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1234 transitions. Word has length 109 [2020-12-22 09:05:57,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:57,973 INFO L481 AbstractCegarLoop]: Abstraction has 743 states and 1234 transitions. [2020-12-22 09:05:57,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:05:57,974 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1234 transitions. [2020-12-22 09:05:57,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-22 09:05:57,979 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:57,979 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] [2020-12-22 09:05:57,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 09:05:57,980 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:57,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:57,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1899343221, now seen corresponding path program 1 times [2020-12-22 09:05:57,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:57,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085086906] [2020-12-22 09:05:57,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:58,130 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 09:05:58,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085086906] [2020-12-22 09:05:58,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:58,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:05:58,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163332335] [2020-12-22 09:05:58,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:05:58,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:58,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:05:58,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:05:58,137 INFO L87 Difference]: Start difference. First operand 743 states and 1234 transitions. Second operand 3 states. [2020-12-22 09:05:58,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:58,250 INFO L93 Difference]: Finished difference Result 1827 states and 3028 transitions. [2020-12-22 09:05:58,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:05:58,251 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 112 [2020-12-22 09:05:58,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:58,263 INFO L225 Difference]: With dead ends: 1827 [2020-12-22 09:05:58,263 INFO L226 Difference]: Without dead ends: 1265 [2020-12-22 09:05:58,266 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 09:05:58,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2020-12-22 09:05:58,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 1259. [2020-12-22 09:05:58,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1259 states. [2020-12-22 09:05:58,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 2082 transitions. [2020-12-22 09:05:58,349 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 2082 transitions. Word has length 112 [2020-12-22 09:05:58,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:58,359 INFO L481 AbstractCegarLoop]: Abstraction has 1259 states and 2082 transitions. [2020-12-22 09:05:58,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:05:58,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 2082 transitions. [2020-12-22 09:05:58,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-22 09:05:58,362 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:58,363 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] [2020-12-22 09:05:58,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 09:05:58,363 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:58,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:58,365 INFO L82 PathProgramCache]: Analyzing trace with hash -634176207, now seen corresponding path program 1 times [2020-12-22 09:05:58,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:58,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657823806] [2020-12-22 09:05:58,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:58,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:58,545 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 09:05:58,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657823806] [2020-12-22 09:05:58,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:58,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:05:58,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044543483] [2020-12-22 09:05:58,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:05:58,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:58,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:05:58,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:05:58,551 INFO L87 Difference]: Start difference. First operand 1259 states and 2082 transitions. Second operand 3 states. [2020-12-22 09:05:58,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:58,719 INFO L93 Difference]: Finished difference Result 3335 states and 5500 transitions. [2020-12-22 09:05:58,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:05:58,719 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 115 [2020-12-22 09:05:58,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:58,740 INFO L225 Difference]: With dead ends: 3335 [2020-12-22 09:05:58,741 INFO L226 Difference]: Without dead ends: 2257 [2020-12-22 09:05:58,743 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 09:05:58,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2020-12-22 09:05:58,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2247. [2020-12-22 09:05:58,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2247 states. [2020-12-22 09:05:58,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 3694 transitions. [2020-12-22 09:05:58,939 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 3694 transitions. Word has length 115 [2020-12-22 09:05:58,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:58,940 INFO L481 AbstractCegarLoop]: Abstraction has 2247 states and 3694 transitions. [2020-12-22 09:05:58,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:05:58,940 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 3694 transitions. [2020-12-22 09:05:58,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-12-22 09:05:58,944 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:58,944 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] [2020-12-22 09:05:58,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 09:05:58,945 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:58,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:58,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1842996660, now seen corresponding path program 1 times [2020-12-22 09:05:58,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:58,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398601092] [2020-12-22 09:05:58,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:59,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:59,183 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 09:05:59,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398601092] [2020-12-22 09:05:59,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:59,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 09:05:59,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025771796] [2020-12-22 09:05:59,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:05:59,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:59,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:05:59,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:05:59,187 INFO L87 Difference]: Start difference. First operand 2247 states and 3694 transitions. Second operand 6 states. [2020-12-22 09:05:59,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:59,836 INFO L93 Difference]: Finished difference Result 8617 states and 14223 transitions. [2020-12-22 09:05:59,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:05:59,837 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2020-12-22 09:05:59,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:59,876 INFO L225 Difference]: With dead ends: 8617 [2020-12-22 09:05:59,876 INFO L226 Difference]: Without dead ends: 6551 [2020-12-22 09:05:59,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:05:59,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6551 states. [2020-12-22 09:06:00,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6551 to 5148. [2020-12-22 09:06:00,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5148 states. [2020-12-22 09:06:00,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5148 states to 5148 states and 8469 transitions. [2020-12-22 09:06:00,333 INFO L78 Accepts]: Start accepts. Automaton has 5148 states and 8469 transitions. Word has length 118 [2020-12-22 09:06:00,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:06:00,334 INFO L481 AbstractCegarLoop]: Abstraction has 5148 states and 8469 transitions. [2020-12-22 09:06:00,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:06:00,334 INFO L276 IsEmpty]: Start isEmpty. Operand 5148 states and 8469 transitions. [2020-12-22 09:06:00,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-12-22 09:06:00,340 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:00,341 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] [2020-12-22 09:06:00,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 09:06:00,341 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:00,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:00,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1365383642, now seen corresponding path program 1 times [2020-12-22 09:06:00,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:00,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841786868] [2020-12-22 09:06:00,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:00,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:00,463 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 09:06:00,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841786868] [2020-12-22 09:06:00,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:00,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:06:00,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934940409] [2020-12-22 09:06:00,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:06:00,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:00,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:06:00,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:06:00,467 INFO L87 Difference]: Start difference. First operand 5148 states and 8469 transitions. Second operand 4 states. [2020-12-22 09:06:01,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:06:01,075 INFO L93 Difference]: Finished difference Result 13437 states and 22185 transitions. [2020-12-22 09:06:01,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:06:01,076 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2020-12-22 09:06:01,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:06:01,122 INFO L225 Difference]: With dead ends: 13437 [2020-12-22 09:06:01,122 INFO L226 Difference]: Without dead ends: 8470 [2020-12-22 09:06:01,132 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 09:06:01,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8470 states. [2020-12-22 09:06:01,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8470 to 7613. [2020-12-22 09:06:01,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7613 states. [2020-12-22 09:06:01,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7613 states to 7613 states and 12542 transitions. [2020-12-22 09:06:01,689 INFO L78 Accepts]: Start accepts. Automaton has 7613 states and 12542 transitions. Word has length 119 [2020-12-22 09:06:01,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:06:01,689 INFO L481 AbstractCegarLoop]: Abstraction has 7613 states and 12542 transitions. [2020-12-22 09:06:01,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:06:01,690 INFO L276 IsEmpty]: Start isEmpty. Operand 7613 states and 12542 transitions. [2020-12-22 09:06:01,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-12-22 09:06:01,694 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:01,694 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] [2020-12-22 09:06:01,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 09:06:01,695 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:01,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:01,700 INFO L82 PathProgramCache]: Analyzing trace with hash 560276051, now seen corresponding path program 1 times [2020-12-22 09:06:01,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:01,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458817345] [2020-12-22 09:06:01,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:01,887 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 09:06:01,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458817345] [2020-12-22 09:06:01,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:01,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:06:01,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693237117] [2020-12-22 09:06:01,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:06:01,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:01,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:06:01,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:06:01,891 INFO L87 Difference]: Start difference. First operand 7613 states and 12542 transitions. Second operand 4 states. [2020-12-22 09:06:02,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:06:02,722 INFO L93 Difference]: Finished difference Result 19772 states and 32630 transitions. [2020-12-22 09:06:02,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:06:02,722 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-12-22 09:06:02,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:06:02,791 INFO L225 Difference]: With dead ends: 19772 [2020-12-22 09:06:02,791 INFO L226 Difference]: Without dead ends: 12340 [2020-12-22 09:06:02,807 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 09:06:02,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12340 states. [2020-12-22 09:06:03,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12340 to 11188. [2020-12-22 09:06:03,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11188 states. [2020-12-22 09:06:03,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11188 states to 11188 states and 18411 transitions. [2020-12-22 09:06:03,512 INFO L78 Accepts]: Start accepts. Automaton has 11188 states and 18411 transitions. Word has length 120 [2020-12-22 09:06:03,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:06:03,513 INFO L481 AbstractCegarLoop]: Abstraction has 11188 states and 18411 transitions. [2020-12-22 09:06:03,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:06:03,513 INFO L276 IsEmpty]: Start isEmpty. Operand 11188 states and 18411 transitions. [2020-12-22 09:06:03,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-22 09:06:03,519 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:03,519 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] [2020-12-22 09:06:03,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 09:06:03,520 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:03,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:03,521 INFO L82 PathProgramCache]: Analyzing trace with hash 130742413, now seen corresponding path program 1 times [2020-12-22 09:06:03,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:03,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318382893] [2020-12-22 09:06:03,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:03,689 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 09:06:03,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318382893] [2020-12-22 09:06:03,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:03,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:06:03,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490856792] [2020-12-22 09:06:03,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:06:03,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:03,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:06:03,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:06:03,692 INFO L87 Difference]: Start difference. First operand 11188 states and 18411 transitions. Second operand 4 states. [2020-12-22 09:06:04,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:06:04,573 INFO L93 Difference]: Finished difference Result 28784 states and 47451 transitions. [2020-12-22 09:06:04,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:06:04,574 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2020-12-22 09:06:04,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:06:04,616 INFO L225 Difference]: With dead ends: 28784 [2020-12-22 09:06:04,617 INFO L226 Difference]: Without dead ends: 17777 [2020-12-22 09:06:04,637 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 09:06:04,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17777 states. [2020-12-22 09:06:05,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17777 to 16323. [2020-12-22 09:06:05,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16323 states. [2020-12-22 09:06:05,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16323 states to 16323 states and 26832 transitions. [2020-12-22 09:06:05,756 INFO L78 Accepts]: Start accepts. Automaton has 16323 states and 26832 transitions. Word has length 121 [2020-12-22 09:06:05,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:06:05,756 INFO L481 AbstractCegarLoop]: Abstraction has 16323 states and 26832 transitions. [2020-12-22 09:06:05,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:06:05,757 INFO L276 IsEmpty]: Start isEmpty. Operand 16323 states and 26832 transitions. [2020-12-22 09:06:05,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-12-22 09:06:05,763 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:05,763 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] [2020-12-22 09:06:05,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 09:06:05,764 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:05,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:05,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1601966021, now seen corresponding path program 1 times [2020-12-22 09:06:05,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:05,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668218836] [2020-12-22 09:06:05,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:05,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:05,855 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 09:06:05,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668218836] [2020-12-22 09:06:05,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:05,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:06:05,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012092110] [2020-12-22 09:06:05,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:06:05,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:05,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:06:05,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:06:05,858 INFO L87 Difference]: Start difference. First operand 16323 states and 26832 transitions. Second operand 3 states. [2020-12-22 09:06:06,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:06:06,946 INFO L93 Difference]: Finished difference Result 36538 states and 60103 transitions. [2020-12-22 09:06:06,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:06:06,946 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2020-12-22 09:06:06,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:06:07,009 INFO L225 Difference]: With dead ends: 36538 [2020-12-22 09:06:07,009 INFO L226 Difference]: Without dead ends: 25157 [2020-12-22 09:06:07,027 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 09:06:07,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25157 states. [2020-12-22 09:06:08,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25157 to 25155. [2020-12-22 09:06:08,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25155 states. [2020-12-22 09:06:08,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25155 states to 25155 states and 41236 transitions. [2020-12-22 09:06:08,339 INFO L78 Accepts]: Start accepts. Automaton has 25155 states and 41236 transitions. Word has length 122 [2020-12-22 09:06:08,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:06:08,340 INFO L481 AbstractCegarLoop]: Abstraction has 25155 states and 41236 transitions. [2020-12-22 09:06:08,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:06:08,340 INFO L276 IsEmpty]: Start isEmpty. Operand 25155 states and 41236 transitions. [2020-12-22 09:06:08,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-12-22 09:06:08,343 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:08,344 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] [2020-12-22 09:06:08,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 09:06:08,344 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:08,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:08,345 INFO L82 PathProgramCache]: Analyzing trace with hash 654906329, now seen corresponding path program 1 times [2020-12-22 09:06:08,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:08,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515722175] [2020-12-22 09:06:08,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:08,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:08,451 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 09:06:08,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515722175] [2020-12-22 09:06:08,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:08,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:06:08,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576685126] [2020-12-22 09:06:08,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:06:08,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:08,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:06:08,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:06:08,454 INFO L87 Difference]: Start difference. First operand 25155 states and 41236 transitions. Second operand 3 states. [2020-12-22 09:06:10,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:06:10,047 INFO L93 Difference]: Finished difference Result 56016 states and 91902 transitions. [2020-12-22 09:06:10,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:06:10,048 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2020-12-22 09:06:10,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:06:10,155 INFO L225 Difference]: With dead ends: 56016 [2020-12-22 09:06:10,156 INFO L226 Difference]: Without dead ends: 38451 [2020-12-22 09:06:10,183 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 09:06:10,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38451 states. [2020-12-22 09:06:11,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38451 to 38449. [2020-12-22 09:06:11,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38449 states. [2020-12-22 09:06:11,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38449 states to 38449 states and 62831 transitions. [2020-12-22 09:06:11,875 INFO L78 Accepts]: Start accepts. Automaton has 38449 states and 62831 transitions. Word has length 122 [2020-12-22 09:06:11,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:06:11,875 INFO L481 AbstractCegarLoop]: Abstraction has 38449 states and 62831 transitions. [2020-12-22 09:06:11,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:06:11,875 INFO L276 IsEmpty]: Start isEmpty. Operand 38449 states and 62831 transitions. [2020-12-22 09:06:11,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-12-22 09:06:11,878 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:11,878 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] [2020-12-22 09:06:11,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 09:06:11,879 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:11,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:11,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1423805753, now seen corresponding path program 1 times [2020-12-22 09:06:11,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:11,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219163188] [2020-12-22 09:06:11,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:11,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:11,985 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 09:06:11,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219163188] [2020-12-22 09:06:11,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:11,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:06:11,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846020085] [2020-12-22 09:06:11,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:06:11,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:11,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:06:11,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:06:11,987 INFO L87 Difference]: Start difference. First operand 38449 states and 62831 transitions. Second operand 3 states. [2020-12-22 09:06:13,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:06:13,810 INFO L93 Difference]: Finished difference Result 80177 states and 131219 transitions. [2020-12-22 09:06:13,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:06:13,811 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2020-12-22 09:06:13,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:06:13,932 INFO L225 Difference]: With dead ends: 80177 [2020-12-22 09:06:13,932 INFO L226 Difference]: Without dead ends: 56043 [2020-12-22 09:06:13,967 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 09:06:14,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56043 states. [2020-12-22 09:06:16,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56043 to 56041. [2020-12-22 09:06:16,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56041 states. [2020-12-22 09:06:16,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56041 states to 56041 states and 91292 transitions. [2020-12-22 09:06:16,470 INFO L78 Accepts]: Start accepts. Automaton has 56041 states and 91292 transitions. Word has length 122 [2020-12-22 09:06:16,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:06:16,472 INFO L481 AbstractCegarLoop]: Abstraction has 56041 states and 91292 transitions. [2020-12-22 09:06:16,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:06:16,475 INFO L276 IsEmpty]: Start isEmpty. Operand 56041 states and 91292 transitions. [2020-12-22 09:06:16,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-12-22 09:06:16,478 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:16,478 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] [2020-12-22 09:06:16,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 09:06:16,478 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:16,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:16,479 INFO L82 PathProgramCache]: Analyzing trace with hash -295340454, now seen corresponding path program 1 times [2020-12-22 09:06:16,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:16,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314483620] [2020-12-22 09:06:16,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:16,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:16,578 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 09:06:16,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314483620] [2020-12-22 09:06:16,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:16,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:06:16,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68737566] [2020-12-22 09:06:16,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:06:16,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:16,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:06:16,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:06:16,581 INFO L87 Difference]: Start difference. First operand 56041 states and 91292 transitions. Second operand 4 states. [2020-12-22 09:06:20,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:06:20,694 INFO L93 Difference]: Finished difference Result 165069 states and 268988 transitions. [2020-12-22 09:06:20,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:06:20,694 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-12-22 09:06:20,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:06:20,952 INFO L225 Difference]: With dead ends: 165069 [2020-12-22 09:06:20,952 INFO L226 Difference]: Without dead ends: 109429 [2020-12-22 09:06:21,010 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 09:06:21,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109429 states. [2020-12-22 09:06:24,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109429 to 82601. [2020-12-22 09:06:24,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82601 states. [2020-12-22 09:06:25,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82601 states to 82601 states and 134152 transitions. [2020-12-22 09:06:25,136 INFO L78 Accepts]: Start accepts. Automaton has 82601 states and 134152 transitions. Word has length 122 [2020-12-22 09:06:25,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:06:25,136 INFO L481 AbstractCegarLoop]: Abstraction has 82601 states and 134152 transitions. [2020-12-22 09:06:25,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:06:25,136 INFO L276 IsEmpty]: Start isEmpty. Operand 82601 states and 134152 transitions. [2020-12-22 09:06:25,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-12-22 09:06:25,139 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:25,139 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] [2020-12-22 09:06:25,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 09:06:25,139 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:25,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:25,140 INFO L82 PathProgramCache]: Analyzing trace with hash -845896115, now seen corresponding path program 1 times [2020-12-22 09:06:25,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:25,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740858554] [2020-12-22 09:06:25,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:25,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:25,214 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 09:06:25,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740858554] [2020-12-22 09:06:25,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:25,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:06:25,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868432662] [2020-12-22 09:06:25,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:06:25,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:25,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:06:25,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:06:25,216 INFO L87 Difference]: Start difference. First operand 82601 states and 134152 transitions. Second operand 3 states. [2020-12-22 09:06:30,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:06:30,170 INFO L93 Difference]: Finished difference Result 182438 states and 297872 transitions. [2020-12-22 09:06:30,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:06:30,171 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2020-12-22 09:06:30,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:06:30,469 INFO L225 Difference]: With dead ends: 182438 [2020-12-22 09:06:30,469 INFO L226 Difference]: Without dead ends: 123615 [2020-12-22 09:06:30,567 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 09:06:30,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123615 states. [2020-12-22 09:06:35,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123615 to 123613. [2020-12-22 09:06:35,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123613 states. [2020-12-22 09:06:36,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123613 states to 123613 states and 200493 transitions. [2020-12-22 09:06:36,096 INFO L78 Accepts]: Start accepts. Automaton has 123613 states and 200493 transitions. Word has length 122 [2020-12-22 09:06:36,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:06:36,096 INFO L481 AbstractCegarLoop]: Abstraction has 123613 states and 200493 transitions. [2020-12-22 09:06:36,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:06:36,096 INFO L276 IsEmpty]: Start isEmpty. Operand 123613 states and 200493 transitions. [2020-12-22 09:06:36,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-12-22 09:06:36,098 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:36,098 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] [2020-12-22 09:06:36,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 09:06:36,098 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:36,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:36,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1871640245, now seen corresponding path program 1 times [2020-12-22 09:06:36,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:36,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726094551] [2020-12-22 09:06:36,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:36,344 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 09:06:36,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726094551] [2020-12-22 09:06:36,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:36,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 09:06:36,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503433195] [2020-12-22 09:06:36,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:06:36,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:36,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:06:36,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:06:36,347 INFO L87 Difference]: Start difference. First operand 123613 states and 200493 transitions. Second operand 6 states. [2020-12-22 09:06:45,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:06:45,657 INFO L93 Difference]: Finished difference Result 318131 states and 516956 transitions. [2020-12-22 09:06:45,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:06:45,658 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2020-12-22 09:06:45,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:06:46,039 INFO L225 Difference]: With dead ends: 318131 [2020-12-22 09:06:46,039 INFO L226 Difference]: Without dead ends: 194767 [2020-12-22 09:06:46,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:06:46,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194767 states. [2020-12-22 09:06:53,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194767 to 146113. [2020-12-22 09:06:53,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146113 states. [2020-12-22 09:06:54,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146113 states to 146113 states and 236243 transitions. [2020-12-22 09:06:54,316 INFO L78 Accepts]: Start accepts. Automaton has 146113 states and 236243 transitions. Word has length 124 [2020-12-22 09:06:54,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:06:54,316 INFO L481 AbstractCegarLoop]: Abstraction has 146113 states and 236243 transitions. [2020-12-22 09:06:54,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:06:54,317 INFO L276 IsEmpty]: Start isEmpty. Operand 146113 states and 236243 transitions. [2020-12-22 09:06:54,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-22 09:06:54,318 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:54,318 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:54,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 09:06:54,321 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:54,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:54,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1477496671, now seen corresponding path program 1 times [2020-12-22 09:06:54,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:54,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871164605] [2020-12-22 09:06:54,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:54,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:54,536 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 09:06:54,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871164605] [2020-12-22 09:06:54,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:54,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 09:06:54,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259749173] [2020-12-22 09:06:54,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:06:54,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:54,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:06:54,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:06:54,538 INFO L87 Difference]: Start difference. First operand 146113 states and 236243 transitions. Second operand 6 states. [2020-12-22 09:07:08,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:07:08,827 INFO L93 Difference]: Finished difference Result 430107 states and 695973 transitions. [2020-12-22 09:07:08,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:07:08,827 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2020-12-22 09:07:08,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:07:09,566 INFO L225 Difference]: With dead ends: 430107 [2020-12-22 09:07:09,566 INFO L226 Difference]: Without dead ends: 284243 [2020-12-22 09:07:09,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-12-22 09:07:09,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284243 states. [2020-12-22 09:07:24,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284243 to 284241. [2020-12-22 09:07:24,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284241 states. [2020-12-22 09:07:25,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284241 states to 284241 states and 457259 transitions. [2020-12-22 09:07:25,361 INFO L78 Accepts]: Start accepts. Automaton has 284241 states and 457259 transitions. Word has length 127 [2020-12-22 09:07:25,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:07:25,361 INFO L481 AbstractCegarLoop]: Abstraction has 284241 states and 457259 transitions. [2020-12-22 09:07:25,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:07:25,362 INFO L276 IsEmpty]: Start isEmpty. Operand 284241 states and 457259 transitions. [2020-12-22 09:07:25,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-12-22 09:07:25,362 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:07:25,362 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] [2020-12-22 09:07:25,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 09:07:25,363 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:07:25,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:07:25,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1444152568, now seen corresponding path program 1 times [2020-12-22 09:07:25,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:07:25,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136622352] [2020-12-22 09:07:25,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:07:25,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:07:25,555 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 09:07:25,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136622352] [2020-12-22 09:07:25,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:07:25,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:07:25,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274605095] [2020-12-22 09:07:25,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:07:25,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:07:25,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:07:25,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:07:25,557 INFO L87 Difference]: Start difference. First operand 284241 states and 457259 transitions. Second operand 5 states. [2020-12-22 09:07:54,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:07:54,004 INFO L93 Difference]: Finished difference Result 546888 states and 876914 transitions. [2020-12-22 09:07:54,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:07:54,007 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-12-22 09:07:54,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:07:55,234 INFO L225 Difference]: With dead ends: 546888 [2020-12-22 09:07:55,235 INFO L226 Difference]: Without dead ends: 546886 [2020-12-22 09:07:55,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:07:55,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546886 states.