/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_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:16:21,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:16:21,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:16:21,075 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:16:21,076 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:16:21,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:16:21,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:16:21,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:16:21,095 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:16:21,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:16:21,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:16:21,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:16:21,105 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:16:21,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:16:21,110 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:16:21,112 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:16:21,113 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:16:21,116 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:16:21,132 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:16:21,141 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:16:21,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:16:21,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:16:21,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:16:21,150 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:16:21,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:16:21,163 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:16:21,164 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:16:21,166 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:16:21,167 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:16:21,168 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:16:21,168 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:16:21,169 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:16:21,169 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:16:21,170 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:16:21,170 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:16:21,171 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:16:21,172 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:16:21,222 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:16:21,223 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:16:21,227 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:16:21,227 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:16:21,227 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:16:21,228 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:16:21,228 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:16:21,228 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:16:21,228 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:16:21,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:16:21,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:16:21,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:16:21,230 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:16:21,230 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:16:21,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:16:21,231 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:16:21,231 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:16:21,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:16:21,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:16:21,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:16:21,232 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:16:21,232 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:16:21,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:16:21,232 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:16:21,233 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:16:21,233 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:16:21,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:16:21,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:16:21,719 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:16:21,721 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:16:21,722 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:16:21,722 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-12-22 08:16:21,819 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1440eefe/4c5fe6ae5e5f461cba3b07a1ab0fa34b/FLAGd6a29e9dd [2020-12-22 08:16:22,423 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:16:22,424 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-12-22 08:16:22,438 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1440eefe/4c5fe6ae5e5f461cba3b07a1ab0fa34b/FLAGd6a29e9dd [2020-12-22 08:16:22,762 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1440eefe/4c5fe6ae5e5f461cba3b07a1ab0fa34b [2020-12-22 08:16:22,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:16:22,767 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:16:22,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:16:22,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:16:22,776 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:16:22,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:16:22" (1/1) ... [2020-12-22 08:16:22,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@262cc5a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:16:22, skipping insertion in model container [2020-12-22 08:16:22,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:16:22" (1/1) ... [2020-12-22 08:16:22,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:16:22,822 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:16:23,018 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_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[3969,3982] [2020-12-22 08:16:23,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:16:23,060 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:16:23,104 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_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[3969,3982] [2020-12-22 08:16:23,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:16:23,167 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:16:23,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:16:23 WrapperNode [2020-12-22 08:16:23,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:16:23,169 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:16:23,169 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:16:23,170 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:16:23,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:16:23" (1/1) ... [2020-12-22 08:16:23,188 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:16:23" (1/1) ... [2020-12-22 08:16:23,232 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:16:23,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:16:23,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:16:23,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:16:23,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:16:23" (1/1) ... [2020-12-22 08:16:23,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:16:23" (1/1) ... [2020-12-22 08:16:23,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:16:23" (1/1) ... [2020-12-22 08:16:23,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:16:23" (1/1) ... [2020-12-22 08:16:23,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:16:23" (1/1) ... [2020-12-22 08:16:23,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:16:23" (1/1) ... [2020-12-22 08:16:23,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:16:23" (1/1) ... [2020-12-22 08:16:23,274 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:16:23,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:16:23,275 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:16:23,276 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:16:23,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:16:23" (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 08:16:23,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:16:23,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:16:23,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:16:23,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:16:24,184 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:16:24,184 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:16:24,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:16:24 BoogieIcfgContainer [2020-12-22 08:16:24,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:16:24,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:16:24,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:16:24,192 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:16:24,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:16:22" (1/3) ... [2020-12-22 08:16:24,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b3ad1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:16:24, skipping insertion in model container [2020-12-22 08:16:24,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:16:23" (2/3) ... [2020-12-22 08:16:24,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b3ad1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:16:24, skipping insertion in model container [2020-12-22 08:16:24,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:16:24" (3/3) ... [2020-12-22 08:16:24,197 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-12-22 08:16:24,204 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:16:24,210 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:16:24,235 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:16:24,266 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:16:24,266 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:16:24,266 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:16:24,266 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:16:24,267 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:16:24,267 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:16:24,267 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:16:24,267 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:16:24,287 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2020-12-22 08:16:24,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 08:16:24,297 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:24,298 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] [2020-12-22 08:16:24,298 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:24,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:24,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1485847759, now seen corresponding path program 1 times [2020-12-22 08:16:24,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:24,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537099174] [2020-12-22 08:16:24,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:24,680 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 08:16:24,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537099174] [2020-12-22 08:16:24,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:24,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:16:24,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364355864] [2020-12-22 08:16:24,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:16:24,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:24,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:16:24,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:16:24,707 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 3 states. [2020-12-22 08:16:24,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:24,777 INFO L93 Difference]: Finished difference Result 184 states and 294 transitions. [2020-12-22 08:16:24,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:16:24,779 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-12-22 08:16:24,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:24,792 INFO L225 Difference]: With dead ends: 184 [2020-12-22 08:16:24,793 INFO L226 Difference]: Without dead ends: 118 [2020-12-22 08:16:24,796 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 08:16:24,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-12-22 08:16:24,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2020-12-22 08:16:24,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-12-22 08:16:24,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 172 transitions. [2020-12-22 08:16:24,855 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 172 transitions. Word has length 37 [2020-12-22 08:16:24,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:24,855 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 172 transitions. [2020-12-22 08:16:24,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:16:24,856 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 172 transitions. [2020-12-22 08:16:24,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 08:16:24,857 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:24,858 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] [2020-12-22 08:16:24,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:16:24,858 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:24,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:24,860 INFO L82 PathProgramCache]: Analyzing trace with hash -498229074, now seen corresponding path program 1 times [2020-12-22 08:16:24,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:24,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821848050] [2020-12-22 08:16:24,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:25,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:16:25,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821848050] [2020-12-22 08:16:25,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:25,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:16:25,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473683082] [2020-12-22 08:16:25,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:16:25,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:25,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:16:25,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:16:25,037 INFO L87 Difference]: Start difference. First operand 116 states and 172 transitions. Second operand 3 states. [2020-12-22 08:16:25,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:25,112 INFO L93 Difference]: Finished difference Result 276 states and 424 transitions. [2020-12-22 08:16:25,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:16:25,114 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-12-22 08:16:25,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:25,119 INFO L225 Difference]: With dead ends: 276 [2020-12-22 08:16:25,122 INFO L226 Difference]: Without dead ends: 180 [2020-12-22 08:16:25,125 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 08:16:25,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-12-22 08:16:25,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 178. [2020-12-22 08:16:25,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-12-22 08:16:25,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 269 transitions. [2020-12-22 08:16:25,168 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 269 transitions. Word has length 38 [2020-12-22 08:16:25,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:25,169 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 269 transitions. [2020-12-22 08:16:25,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:16:25,169 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 269 transitions. [2020-12-22 08:16:25,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 08:16:25,171 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:25,171 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] [2020-12-22 08:16:25,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:16:25,172 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:25,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:25,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1494403672, now seen corresponding path program 1 times [2020-12-22 08:16:25,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:25,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368145553] [2020-12-22 08:16:25,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:25,301 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 08:16:25,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368145553] [2020-12-22 08:16:25,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:25,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:16:25,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375557416] [2020-12-22 08:16:25,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:16:25,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:25,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:16:25,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:16:25,305 INFO L87 Difference]: Start difference. First operand 178 states and 269 transitions. Second operand 5 states. [2020-12-22 08:16:25,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:25,481 INFO L93 Difference]: Finished difference Result 596 states and 924 transitions. [2020-12-22 08:16:25,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:16:25,482 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-12-22 08:16:25,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:25,492 INFO L225 Difference]: With dead ends: 596 [2020-12-22 08:16:25,492 INFO L226 Difference]: Without dead ends: 438 [2020-12-22 08:16:25,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:16:25,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2020-12-22 08:16:25,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 434. [2020-12-22 08:16:25,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2020-12-22 08:16:25,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 669 transitions. [2020-12-22 08:16:25,584 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 669 transitions. Word has length 39 [2020-12-22 08:16:25,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:25,585 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 669 transitions. [2020-12-22 08:16:25,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:16:25,585 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 669 transitions. [2020-12-22 08:16:25,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 08:16:25,587 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:25,587 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] [2020-12-22 08:16:25,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:16:25,588 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:25,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:25,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1416306171, now seen corresponding path program 1 times [2020-12-22 08:16:25,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:25,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811292496] [2020-12-22 08:16:25,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:25,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:25,647 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 08:16:25,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811292496] [2020-12-22 08:16:25,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:25,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:16:25,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399096430] [2020-12-22 08:16:25,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:16:25,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:25,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:16:25,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:16:25,651 INFO L87 Difference]: Start difference. First operand 434 states and 669 transitions. Second operand 3 states. [2020-12-22 08:16:25,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:25,730 INFO L93 Difference]: Finished difference Result 1130 states and 1751 transitions. [2020-12-22 08:16:25,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:16:25,731 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-12-22 08:16:25,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:25,736 INFO L225 Difference]: With dead ends: 1130 [2020-12-22 08:16:25,736 INFO L226 Difference]: Without dead ends: 716 [2020-12-22 08:16:25,739 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 08:16:25,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2020-12-22 08:16:25,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 714. [2020-12-22 08:16:25,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 714 states. [2020-12-22 08:16:25,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 1089 transitions. [2020-12-22 08:16:25,806 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 1089 transitions. Word has length 39 [2020-12-22 08:16:25,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:25,806 INFO L481 AbstractCegarLoop]: Abstraction has 714 states and 1089 transitions. [2020-12-22 08:16:25,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:16:25,807 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 1089 transitions. [2020-12-22 08:16:25,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 08:16:25,809 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:25,809 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:16:25,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:16:25,809 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:25,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:25,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1267879647, now seen corresponding path program 1 times [2020-12-22 08:16:25,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:25,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255789257] [2020-12-22 08:16:25,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:25,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:25,903 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 08:16:25,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255789257] [2020-12-22 08:16:25,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:25,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:16:25,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046145757] [2020-12-22 08:16:25,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:16:25,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:25,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:16:25,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:16:25,906 INFO L87 Difference]: Start difference. First operand 714 states and 1089 transitions. Second operand 6 states. [2020-12-22 08:16:26,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:26,274 INFO L93 Difference]: Finished difference Result 2740 states and 4200 transitions. [2020-12-22 08:16:26,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:16:26,275 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2020-12-22 08:16:26,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:26,287 INFO L225 Difference]: With dead ends: 2740 [2020-12-22 08:16:26,287 INFO L226 Difference]: Without dead ends: 2046 [2020-12-22 08:16:26,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:16:26,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2046 states. [2020-12-22 08:16:26,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2046 to 2042. [2020-12-22 08:16:26,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2042 states. [2020-12-22 08:16:26,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2042 states to 2042 states and 3113 transitions. [2020-12-22 08:16:26,454 INFO L78 Accepts]: Start accepts. Automaton has 2042 states and 3113 transitions. Word has length 41 [2020-12-22 08:16:26,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:26,454 INFO L481 AbstractCegarLoop]: Abstraction has 2042 states and 3113 transitions. [2020-12-22 08:16:26,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:16:26,454 INFO L276 IsEmpty]: Start isEmpty. Operand 2042 states and 3113 transitions. [2020-12-22 08:16:26,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 08:16:26,456 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:26,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:16:26,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:16:26,456 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:26,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:26,457 INFO L82 PathProgramCache]: Analyzing trace with hash -938328058, now seen corresponding path program 1 times [2020-12-22 08:16:26,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:26,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496601650] [2020-12-22 08:16:26,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:26,542 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 08:16:26,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496601650] [2020-12-22 08:16:26,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:26,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:16:26,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375137739] [2020-12-22 08:16:26,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:16:26,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:26,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:16:26,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:16:26,548 INFO L87 Difference]: Start difference. First operand 2042 states and 3113 transitions. Second operand 5 states. [2020-12-22 08:16:27,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:27,084 INFO L93 Difference]: Finished difference Result 8186 states and 12493 transitions. [2020-12-22 08:16:27,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:16:27,085 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-12-22 08:16:27,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:27,122 INFO L225 Difference]: With dead ends: 8186 [2020-12-22 08:16:27,122 INFO L226 Difference]: Without dead ends: 6164 [2020-12-22 08:16:27,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:16:27,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6164 states. [2020-12-22 08:16:27,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6164 to 4062. [2020-12-22 08:16:27,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4062 states. [2020-12-22 08:16:27,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4062 states to 4062 states and 6061 transitions. [2020-12-22 08:16:27,534 INFO L78 Accepts]: Start accepts. Automaton has 4062 states and 6061 transitions. Word has length 41 [2020-12-22 08:16:27,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:27,537 INFO L481 AbstractCegarLoop]: Abstraction has 4062 states and 6061 transitions. [2020-12-22 08:16:27,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:16:27,537 INFO L276 IsEmpty]: Start isEmpty. Operand 4062 states and 6061 transitions. [2020-12-22 08:16:27,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 08:16:27,540 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:27,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:16:27,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:16:27,541 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:27,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:27,546 INFO L82 PathProgramCache]: Analyzing trace with hash 957144957, now seen corresponding path program 1 times [2020-12-22 08:16:27,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:27,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866575196] [2020-12-22 08:16:27,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:27,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:27,680 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 08:16:27,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866575196] [2020-12-22 08:16:27,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:27,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:16:27,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703600011] [2020-12-22 08:16:27,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:16:27,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:27,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:16:27,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:16:27,683 INFO L87 Difference]: Start difference. First operand 4062 states and 6061 transitions. Second operand 5 states. [2020-12-22 08:16:28,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:28,441 INFO L93 Difference]: Finished difference Result 8392 states and 12390 transitions. [2020-12-22 08:16:28,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:16:28,442 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-12-22 08:16:28,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:28,489 INFO L225 Difference]: With dead ends: 8392 [2020-12-22 08:16:28,489 INFO L226 Difference]: Without dead ends: 8390 [2020-12-22 08:16:28,493 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 08:16:28,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8390 states. [2020-12-22 08:16:28,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8390 to 4350. [2020-12-22 08:16:28,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4350 states. [2020-12-22 08:16:28,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4350 states to 4350 states and 6349 transitions. [2020-12-22 08:16:28,973 INFO L78 Accepts]: Start accepts. Automaton has 4350 states and 6349 transitions. Word has length 42 [2020-12-22 08:16:28,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:28,973 INFO L481 AbstractCegarLoop]: Abstraction has 4350 states and 6349 transitions. [2020-12-22 08:16:28,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:16:28,974 INFO L276 IsEmpty]: Start isEmpty. Operand 4350 states and 6349 transitions. [2020-12-22 08:16:28,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 08:16:28,977 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:28,977 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] [2020-12-22 08:16:28,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:16:28,977 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:28,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:28,978 INFO L82 PathProgramCache]: Analyzing trace with hash -382704394, now seen corresponding path program 1 times [2020-12-22 08:16:28,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:28,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654557476] [2020-12-22 08:16:28,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:29,074 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 08:16:29,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654557476] [2020-12-22 08:16:29,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:29,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:16:29,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780286839] [2020-12-22 08:16:29,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:16:29,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:29,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:16:29,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:16:29,077 INFO L87 Difference]: Start difference. First operand 4350 states and 6349 transitions. Second operand 3 states. [2020-12-22 08:16:29,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:29,619 INFO L93 Difference]: Finished difference Result 10402 states and 15167 transitions. [2020-12-22 08:16:29,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:16:29,620 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-12-22 08:16:29,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:29,654 INFO L225 Difference]: With dead ends: 10402 [2020-12-22 08:16:29,655 INFO L226 Difference]: Without dead ends: 6072 [2020-12-22 08:16:29,663 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 08:16:29,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6072 states. [2020-12-22 08:16:30,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6072 to 6070. [2020-12-22 08:16:30,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6070 states. [2020-12-22 08:16:30,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6070 states to 6070 states and 8777 transitions. [2020-12-22 08:16:30,289 INFO L78 Accepts]: Start accepts. Automaton has 6070 states and 8777 transitions. Word has length 43 [2020-12-22 08:16:30,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:30,289 INFO L481 AbstractCegarLoop]: Abstraction has 6070 states and 8777 transitions. [2020-12-22 08:16:30,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:16:30,290 INFO L276 IsEmpty]: Start isEmpty. Operand 6070 states and 8777 transitions. [2020-12-22 08:16:30,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 08:16:30,293 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:30,293 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:16:30,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:16:30,294 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:30,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:30,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1624116797, now seen corresponding path program 1 times [2020-12-22 08:16:30,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:30,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316159617] [2020-12-22 08:16:30,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:30,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:30,448 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 08:16:30,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316159617] [2020-12-22 08:16:30,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901133843] [2020-12-22 08:16:30,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 08:16:30,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:30,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 08:16:30,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 08:16:30,691 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 08:16:30,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 08:16:30,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 6 [2020-12-22 08:16:30,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790386958] [2020-12-22 08:16:30,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:16:30,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:30,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:16:30,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:16:30,693 INFO L87 Difference]: Start difference. First operand 6070 states and 8777 transitions. Second operand 6 states. [2020-12-22 08:16:31,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:31,859 INFO L93 Difference]: Finished difference Result 15037 states and 21837 transitions. [2020-12-22 08:16:31,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:16:31,860 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-12-22 08:16:31,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:31,910 INFO L225 Difference]: With dead ends: 15037 [2020-12-22 08:16:31,910 INFO L226 Difference]: Without dead ends: 10707 [2020-12-22 08:16:31,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:16:31,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10707 states. [2020-12-22 08:16:32,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10707 to 10062. [2020-12-22 08:16:32,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10062 states. [2020-12-22 08:16:32,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10062 states to 10062 states and 14433 transitions. [2020-12-22 08:16:32,960 INFO L78 Accepts]: Start accepts. Automaton has 10062 states and 14433 transitions. Word has length 60 [2020-12-22 08:16:32,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:32,961 INFO L481 AbstractCegarLoop]: Abstraction has 10062 states and 14433 transitions. [2020-12-22 08:16:32,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:16:32,961 INFO L276 IsEmpty]: Start isEmpty. Operand 10062 states and 14433 transitions. [2020-12-22 08:16:32,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 08:16:32,964 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:32,965 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:16:33,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-22 08:16:33,179 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:33,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:33,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1000125924, now seen corresponding path program 1 times [2020-12-22 08:16:33,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:33,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446535917] [2020-12-22 08:16:33,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:33,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:33,295 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 08:16:33,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446535917] [2020-12-22 08:16:33,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:33,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:16:33,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250569919] [2020-12-22 08:16:33,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:16:33,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:33,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:16:33,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:16:33,298 INFO L87 Difference]: Start difference. First operand 10062 states and 14433 transitions. Second operand 5 states. [2020-12-22 08:16:34,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:34,697 INFO L93 Difference]: Finished difference Result 18244 states and 26327 transitions. [2020-12-22 08:16:34,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:16:34,698 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-12-22 08:16:34,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:34,735 INFO L225 Difference]: With dead ends: 18244 [2020-12-22 08:16:34,735 INFO L226 Difference]: Without dead ends: 14612 [2020-12-22 08:16:34,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:16:34,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14612 states. [2020-12-22 08:16:35,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14612 to 13150. [2020-12-22 08:16:35,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13150 states. [2020-12-22 08:16:36,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13150 states to 13150 states and 18801 transitions. [2020-12-22 08:16:36,005 INFO L78 Accepts]: Start accepts. Automaton has 13150 states and 18801 transitions. Word has length 61 [2020-12-22 08:16:36,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:36,005 INFO L481 AbstractCegarLoop]: Abstraction has 13150 states and 18801 transitions. [2020-12-22 08:16:36,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:16:36,006 INFO L276 IsEmpty]: Start isEmpty. Operand 13150 states and 18801 transitions. [2020-12-22 08:16:36,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 08:16:36,009 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:36,009 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:16:36,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:16:36,009 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:36,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:36,010 INFO L82 PathProgramCache]: Analyzing trace with hash -876556853, now seen corresponding path program 1 times [2020-12-22 08:16:36,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:36,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489885367] [2020-12-22 08:16:36,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:36,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:36,071 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:16:36,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489885367] [2020-12-22 08:16:36,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:36,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:16:36,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771560682] [2020-12-22 08:16:36,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:16:36,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:36,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:16:36,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:16:36,079 INFO L87 Difference]: Start difference. First operand 13150 states and 18801 transitions. Second operand 3 states. [2020-12-22 08:16:37,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:37,190 INFO L93 Difference]: Finished difference Result 20870 states and 29699 transitions. [2020-12-22 08:16:37,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:16:37,190 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-12-22 08:16:37,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:37,222 INFO L225 Difference]: With dead ends: 20870 [2020-12-22 08:16:37,223 INFO L226 Difference]: Without dead ends: 13598 [2020-12-22 08:16:37,238 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 08:16:37,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13598 states. [2020-12-22 08:16:38,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13598 to 11651. [2020-12-22 08:16:38,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11651 states. [2020-12-22 08:16:38,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11651 states to 11651 states and 16319 transitions. [2020-12-22 08:16:38,468 INFO L78 Accepts]: Start accepts. Automaton has 11651 states and 16319 transitions. Word has length 61 [2020-12-22 08:16:38,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:38,468 INFO L481 AbstractCegarLoop]: Abstraction has 11651 states and 16319 transitions. [2020-12-22 08:16:38,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:16:38,469 INFO L276 IsEmpty]: Start isEmpty. Operand 11651 states and 16319 transitions. [2020-12-22 08:16:38,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 08:16:38,477 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:38,477 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:16:38,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:16:38,478 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:38,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:38,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1922561508, now seen corresponding path program 1 times [2020-12-22 08:16:38,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:38,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597668261] [2020-12-22 08:16:38,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:38,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:38,526 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:16:38,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597668261] [2020-12-22 08:16:38,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:38,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:16:38,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641020643] [2020-12-22 08:16:38,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:16:38,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:38,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:16:38,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:16:38,528 INFO L87 Difference]: Start difference. First operand 11651 states and 16319 transitions. Second operand 3 states. [2020-12-22 08:16:39,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:39,678 INFO L93 Difference]: Finished difference Result 27943 states and 39033 transitions. [2020-12-22 08:16:39,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:16:39,679 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-12-22 08:16:39,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:39,729 INFO L225 Difference]: With dead ends: 27943 [2020-12-22 08:16:39,730 INFO L226 Difference]: Without dead ends: 19248 [2020-12-22 08:16:39,744 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 08:16:39,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19248 states. [2020-12-22 08:16:41,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19248 to 19197. [2020-12-22 08:16:41,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19197 states. [2020-12-22 08:16:41,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19197 states to 19197 states and 26467 transitions. [2020-12-22 08:16:41,134 INFO L78 Accepts]: Start accepts. Automaton has 19197 states and 26467 transitions. Word has length 61 [2020-12-22 08:16:41,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:41,134 INFO L481 AbstractCegarLoop]: Abstraction has 19197 states and 26467 transitions. [2020-12-22 08:16:41,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:16:41,134 INFO L276 IsEmpty]: Start isEmpty. Operand 19197 states and 26467 transitions. [2020-12-22 08:16:41,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 08:16:41,138 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:41,139 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:16:41,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:16:41,139 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:41,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:41,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1875177684, now seen corresponding path program 1 times [2020-12-22 08:16:41,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:41,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008605356] [2020-12-22 08:16:41,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:41,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:41,251 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 08:16:41,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008605356] [2020-12-22 08:16:41,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:41,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:16:41,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007440938] [2020-12-22 08:16:41,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:16:41,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:41,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:16:41,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:16:41,260 INFO L87 Difference]: Start difference. First operand 19197 states and 26467 transitions. Second operand 6 states. [2020-12-22 08:16:44,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:44,796 INFO L93 Difference]: Finished difference Result 65202 states and 89464 transitions. [2020-12-22 08:16:44,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:16:44,796 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-12-22 08:16:44,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:44,889 INFO L225 Difference]: With dead ends: 65202 [2020-12-22 08:16:44,890 INFO L226 Difference]: Without dead ends: 46065 [2020-12-22 08:16:44,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:16:44,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46065 states. [2020-12-22 08:16:48,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46065 to 45639. [2020-12-22 08:16:48,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45639 states. [2020-12-22 08:16:48,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45639 states to 45639 states and 62277 transitions. [2020-12-22 08:16:48,699 INFO L78 Accepts]: Start accepts. Automaton has 45639 states and 62277 transitions. Word has length 61 [2020-12-22 08:16:48,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:48,699 INFO L481 AbstractCegarLoop]: Abstraction has 45639 states and 62277 transitions. [2020-12-22 08:16:48,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:16:48,700 INFO L276 IsEmpty]: Start isEmpty. Operand 45639 states and 62277 transitions. [2020-12-22 08:16:48,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 08:16:48,705 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:48,705 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:16:48,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:16:48,705 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:48,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:48,706 INFO L82 PathProgramCache]: Analyzing trace with hash -802284721, now seen corresponding path program 1 times [2020-12-22 08:16:48,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:48,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577865772] [2020-12-22 08:16:48,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:48,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:48,787 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 08:16:48,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577865772] [2020-12-22 08:16:48,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:48,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:16:48,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324782795] [2020-12-22 08:16:48,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:16:48,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:48,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:16:48,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:16:48,789 INFO L87 Difference]: Start difference. First operand 45639 states and 62277 transitions. Second operand 5 states. [2020-12-22 08:16:52,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:52,644 INFO L93 Difference]: Finished difference Result 68516 states and 94461 transitions. [2020-12-22 08:16:52,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:16:52,644 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-12-22 08:16:52,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:52,723 INFO L225 Difference]: With dead ends: 68516 [2020-12-22 08:16:52,723 INFO L226 Difference]: Without dead ends: 61438 [2020-12-22 08:16:52,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:16:52,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61438 states. [2020-12-22 08:16:56,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61438 to 52427. [2020-12-22 08:16:56,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52427 states. [2020-12-22 08:16:56,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52427 states to 52427 states and 71593 transitions. [2020-12-22 08:16:56,791 INFO L78 Accepts]: Start accepts. Automaton has 52427 states and 71593 transitions. Word has length 61 [2020-12-22 08:16:56,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:56,791 INFO L481 AbstractCegarLoop]: Abstraction has 52427 states and 71593 transitions. [2020-12-22 08:16:56,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:16:56,791 INFO L276 IsEmpty]: Start isEmpty. Operand 52427 states and 71593 transitions. [2020-12-22 08:16:56,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 08:16:56,796 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:56,797 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:16:56,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:16:56,800 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:56,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:56,801 INFO L82 PathProgramCache]: Analyzing trace with hash -237073659, now seen corresponding path program 1 times [2020-12-22 08:16:56,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:56,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759656606] [2020-12-22 08:16:56,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:56,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:56,881 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 08:16:56,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759656606] [2020-12-22 08:16:56,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:56,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:16:56,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234669484] [2020-12-22 08:16:56,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:16:56,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:56,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:16:56,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:16:56,885 INFO L87 Difference]: Start difference. First operand 52427 states and 71593 transitions. Second operand 5 states. [2020-12-22 08:17:01,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:01,320 INFO L93 Difference]: Finished difference Result 77722 states and 107184 transitions. [2020-12-22 08:17:01,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:17:01,320 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-12-22 08:17:01,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:01,410 INFO L225 Difference]: With dead ends: 77722 [2020-12-22 08:17:01,411 INFO L226 Difference]: Without dead ends: 66265 [2020-12-22 08:17:01,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:17:01,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66265 states. [2020-12-22 08:17:06,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66265 to 61311. [2020-12-22 08:17:06,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61311 states. [2020-12-22 08:17:06,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61311 states to 61311 states and 83481 transitions. [2020-12-22 08:17:06,296 INFO L78 Accepts]: Start accepts. Automaton has 61311 states and 83481 transitions. Word has length 62 [2020-12-22 08:17:06,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:06,296 INFO L481 AbstractCegarLoop]: Abstraction has 61311 states and 83481 transitions. [2020-12-22 08:17:06,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:17:06,296 INFO L276 IsEmpty]: Start isEmpty. Operand 61311 states and 83481 transitions. [2020-12-22 08:17:06,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:17:06,301 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:06,302 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:17:06,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:17:06,302 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:17:06,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:06,303 INFO L82 PathProgramCache]: Analyzing trace with hash -88290541, now seen corresponding path program 1 times [2020-12-22 08:17:06,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:06,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89408482] [2020-12-22 08:17:06,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:06,354 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:17:06,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89408482] [2020-12-22 08:17:06,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:06,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:17:06,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912071418] [2020-12-22 08:17:06,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:17:06,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:06,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:17:06,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:17:06,356 INFO L87 Difference]: Start difference. First operand 61311 states and 83481 transitions. Second operand 3 states. [2020-12-22 08:17:12,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:12,353 INFO L93 Difference]: Finished difference Result 134114 states and 181915 transitions. [2020-12-22 08:17:12,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:17:12,353 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-22 08:17:12,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:12,458 INFO L225 Difference]: With dead ends: 134114 [2020-12-22 08:17:12,458 INFO L226 Difference]: Without dead ends: 79961 [2020-12-22 08:17:12,500 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 08:17:12,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79961 states. [2020-12-22 08:17:18,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79961 to 76836. [2020-12-22 08:17:18,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76836 states. [2020-12-22 08:17:18,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76836 states to 76836 states and 102857 transitions. [2020-12-22 08:17:18,455 INFO L78 Accepts]: Start accepts. Automaton has 76836 states and 102857 transitions. Word has length 64 [2020-12-22 08:17:18,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:18,456 INFO L481 AbstractCegarLoop]: Abstraction has 76836 states and 102857 transitions. [2020-12-22 08:17:18,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:17:18,456 INFO L276 IsEmpty]: Start isEmpty. Operand 76836 states and 102857 transitions. [2020-12-22 08:17:18,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:17:18,463 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:18,464 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:17:18,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:17:18,464 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:17:18,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:18,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1387170523, now seen corresponding path program 1 times [2020-12-22 08:17:18,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:18,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125607747] [2020-12-22 08:17:18,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:18,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:18,534 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:17:18,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125607747] [2020-12-22 08:17:18,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194865238] [2020-12-22 08:17:18,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 08:17:18,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:18,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 08:17:18,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 08:17:18,852 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-12-22 08:17:19,069 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:17:19,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 08:17:19,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-12-22 08:17:19,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293415797] [2020-12-22 08:17:19,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 08:17:19,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:19,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 08:17:19,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:17:19,074 INFO L87 Difference]: Start difference. First operand 76836 states and 102857 transitions. Second operand 11 states. [2020-12-22 08:17:30,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:30,233 INFO L93 Difference]: Finished difference Result 181749 states and 243239 transitions. [2020-12-22 08:17:30,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:17:30,234 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 66 [2020-12-22 08:17:30,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:30,614 INFO L225 Difference]: With dead ends: 181749 [2020-12-22 08:17:30,614 INFO L226 Difference]: Without dead ends: 126460 [2020-12-22 08:17:30,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-12-22 08:17:30,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126460 states. [2020-12-22 08:17:37,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126460 to 78582. [2020-12-22 08:17:37,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78582 states. [2020-12-22 08:17:37,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78582 states to 78582 states and 105719 transitions. [2020-12-22 08:17:37,890 INFO L78 Accepts]: Start accepts. Automaton has 78582 states and 105719 transitions. Word has length 66 [2020-12-22 08:17:37,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:37,891 INFO L481 AbstractCegarLoop]: Abstraction has 78582 states and 105719 transitions. [2020-12-22 08:17:37,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 08:17:37,891 INFO L276 IsEmpty]: Start isEmpty. Operand 78582 states and 105719 transitions. [2020-12-22 08:17:37,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:17:37,898 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:37,898 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:17:38,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 08:17:38,112 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:17:38,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:38,113 INFO L82 PathProgramCache]: Analyzing trace with hash -929496895, now seen corresponding path program 1 times [2020-12-22 08:17:38,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:38,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792531438] [2020-12-22 08:17:38,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:38,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:38,185 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:17:38,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792531438] [2020-12-22 08:17:38,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139682364] [2020-12-22 08:17:38,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 08:17:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:38,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 08:17:38,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 08:17:38,450 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:17:38,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 08:17:38,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-12-22 08:17:38,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675890045] [2020-12-22 08:17:38,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 08:17:38,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:38,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 08:17:38,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:17:38,454 INFO L87 Difference]: Start difference. First operand 78582 states and 105719 transitions. Second operand 11 states. [2020-12-22 08:17:49,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:49,175 INFO L93 Difference]: Finished difference Result 162580 states and 217329 transitions. [2020-12-22 08:17:49,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:17:49,176 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-12-22 08:17:49,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:49,383 INFO L225 Difference]: With dead ends: 162580 [2020-12-22 08:17:49,384 INFO L226 Difference]: Without dead ends: 105084 [2020-12-22 08:17:49,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-12-22 08:17:49,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105084 states. [2020-12-22 08:17:57,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105084 to 78464. [2020-12-22 08:17:57,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78464 states. [2020-12-22 08:17:57,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78464 states to 78464 states and 104889 transitions. [2020-12-22 08:17:57,451 INFO L78 Accepts]: Start accepts. Automaton has 78464 states and 104889 transitions. Word has length 67 [2020-12-22 08:17:57,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:57,451 INFO L481 AbstractCegarLoop]: Abstraction has 78464 states and 104889 transitions. [2020-12-22 08:17:57,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 08:17:57,451 INFO L276 IsEmpty]: Start isEmpty. Operand 78464 states and 104889 transitions. [2020-12-22 08:17:57,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:17:57,456 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:57,456 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:17:57,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 08:17:57,657 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:17:57,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:57,658 INFO L82 PathProgramCache]: Analyzing trace with hash -2073252700, now seen corresponding path program 1 times [2020-12-22 08:17:57,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:57,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981971190] [2020-12-22 08:17:57,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:57,903 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:17:57,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981971190] [2020-12-22 08:17:57,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440688088] [2020-12-22 08:17:57,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 08:17:57,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:58,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 08:17:58,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 08:17:58,124 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:17:58,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 08:17:58,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-12-22 08:17:58,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604598201] [2020-12-22 08:17:58,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 08:17:58,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:58,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 08:17:58,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:17:58,127 INFO L87 Difference]: Start difference. First operand 78464 states and 104889 transitions. Second operand 11 states. [2020-12-22 08:18:12,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:18:12,289 INFO L93 Difference]: Finished difference Result 180165 states and 239284 transitions. [2020-12-22 08:18:12,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:18:12,289 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-12-22 08:18:12,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:18:12,662 INFO L225 Difference]: With dead ends: 180165 [2020-12-22 08:18:12,662 INFO L226 Difference]: Without dead ends: 131999 [2020-12-22 08:18:12,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-12-22 08:18:12,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131999 states. [2020-12-22 08:18:22,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131999 to 86650. [2020-12-22 08:18:22,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86650 states. [2020-12-22 08:18:22,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86650 states to 86650 states and 115456 transitions. [2020-12-22 08:18:22,651 INFO L78 Accepts]: Start accepts. Automaton has 86650 states and 115456 transitions. Word has length 67 [2020-12-22 08:18:22,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:18:22,651 INFO L481 AbstractCegarLoop]: Abstraction has 86650 states and 115456 transitions. [2020-12-22 08:18:22,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 08:18:22,651 INFO L276 IsEmpty]: Start isEmpty. Operand 86650 states and 115456 transitions. [2020-12-22 08:18:22,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:18:22,659 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:18:22,659 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:18:22,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 08:18:22,874 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:18:22,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:18:22,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1719826038, now seen corresponding path program 1 times [2020-12-22 08:18:22,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:18:22,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368637908] [2020-12-22 08:18:22,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:18:22,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:18:22,934 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:18:22,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368637908] [2020-12-22 08:18:22,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:18:22,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:18:22,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017177398] [2020-12-22 08:18:22,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:18:22,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:18:22,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:18:22,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:18:22,936 INFO L87 Difference]: Start difference. First operand 86650 states and 115456 transitions. Second operand 3 states. [2020-12-22 08:18:29,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:18:29,596 INFO L93 Difference]: Finished difference Result 97470 states and 129109 transitions. [2020-12-22 08:18:29,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:18:29,596 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-22 08:18:29,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:18:29,676 INFO L225 Difference]: With dead ends: 97470 [2020-12-22 08:18:29,676 INFO L226 Difference]: Without dead ends: 63560 [2020-12-22 08:18:29,700 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 08:18:29,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63560 states. [2020-12-22 08:18:36,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63560 to 63541. [2020-12-22 08:18:36,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63541 states. [2020-12-22 08:18:36,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63541 states to 63541 states and 82998 transitions. [2020-12-22 08:18:36,626 INFO L78 Accepts]: Start accepts. Automaton has 63541 states and 82998 transitions. Word has length 69 [2020-12-22 08:18:36,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:18:36,626 INFO L481 AbstractCegarLoop]: Abstraction has 63541 states and 82998 transitions. [2020-12-22 08:18:36,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:18:36,626 INFO L276 IsEmpty]: Start isEmpty. Operand 63541 states and 82998 transitions. [2020-12-22 08:18:36,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:18:36,632 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:18:36,632 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:18:36,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 08:18:36,632 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:18:36,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:18:36,633 INFO L82 PathProgramCache]: Analyzing trace with hash 379264655, now seen corresponding path program 1 times [2020-12-22 08:18:36,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:18:36,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393442594] [2020-12-22 08:18:36,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:18:36,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:18:36,832 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:18:36,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393442594] [2020-12-22 08:18:36,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058050795] [2020-12-22 08:18:36,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 08:18:36,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:18:36,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-22 08:18:36,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 08:18:37,134 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 08:18:37,657 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:18:37,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 08:18:37,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 20 [2020-12-22 08:18:37,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120496170] [2020-12-22 08:18:37,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-22 08:18:37,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:18:37,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-22 08:18:37,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2020-12-22 08:18:37,659 INFO L87 Difference]: Start difference. First operand 63541 states and 82998 transitions. Second operand 20 states. [2020-12-22 08:18:38,234 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-12-22 08:18:38,426 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-12-22 08:18:38,742 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-12-22 08:18:39,148 WARN L197 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 105 [2020-12-22 08:18:39,742 WARN L197 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 108 [2020-12-22 08:18:40,079 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-12-22 08:18:40,645 WARN L197 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 114 [2020-12-22 08:18:41,124 WARN L197 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 108 [2020-12-22 08:18:41,622 WARN L197 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 114 [2020-12-22 08:18:42,111 WARN L197 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 119 [2020-12-22 08:18:42,383 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-12-22 08:18:42,615 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-12-22 08:18:43,197 WARN L197 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 125 [2020-12-22 08:18:43,600 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-12-22 08:18:44,089 WARN L197 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-12-22 08:18:44,369 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-12-22 08:18:44,722 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-12-22 08:18:44,979 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-12-22 08:18:45,310 WARN L197 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-12-22 08:18:45,559 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-12-22 08:18:46,076 WARN L197 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 110 [2020-12-22 08:18:46,361 WARN L197 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-12-22 08:18:46,874 WARN L197 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 111 [2020-12-22 08:18:47,410 WARN L197 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 108 [2020-12-22 08:18:47,688 WARN L197 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-12-22 08:18:47,973 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-12-22 08:18:48,309 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-12-22 08:18:48,847 WARN L197 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 116 [2020-12-22 08:18:49,253 WARN L197 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-12-22 08:18:49,817 WARN L197 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 121 [2020-12-22 08:18:50,349 WARN L197 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 122 [2020-12-22 08:18:50,916 WARN L197 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 119 [2020-12-22 08:18:51,211 WARN L197 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-12-22 08:18:51,522 WARN L197 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-12-22 08:18:52,120 WARN L197 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 111 [2020-12-22 08:18:52,363 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-12-22 08:18:52,901 WARN L197 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 119 [2020-12-22 08:18:53,473 WARN L197 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 117 [2020-12-22 08:18:54,035 WARN L197 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 114 [2020-12-22 08:18:54,339 WARN L197 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-12-22 08:18:54,826 WARN L197 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 96 [2020-12-22 08:18:55,115 WARN L197 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-12-22 08:18:55,467 WARN L197 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-12-22 08:18:56,045 WARN L197 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-12-22 08:18:56,639 WARN L197 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 122 [2020-12-22 08:18:56,877 WARN L197 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-12-22 08:18:57,183 WARN L197 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-12-22 08:18:57,772 WARN L197 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 110 [2020-12-22 08:18:58,473 WARN L197 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 128 [2020-12-22 08:18:59,172 WARN L197 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 125 [2020-12-22 08:18:59,755 WARN L197 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 111 [2020-12-22 08:19:00,409 WARN L197 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 107 [2020-12-22 08:19:00,716 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-12-22 08:19:01,039 WARN L197 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-12-22 08:19:01,592 WARN L197 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 104 [2020-12-22 08:19:01,900 WARN L197 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-12-22 08:19:02,571 WARN L197 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 125 [2020-12-22 08:19:02,918 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-12-22 08:19:03,532 WARN L197 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 104 [2020-12-22 08:19:04,206 WARN L197 SmtUtils]: Spent 585.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 121 [2020-12-22 08:19:05,043 WARN L197 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 122 [2020-12-22 08:19:05,843 WARN L197 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 119 [2020-12-22 08:19:06,133 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-12-22 08:19:06,898 WARN L197 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 117 [2020-12-22 08:19:07,526 WARN L197 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 102 [2020-12-22 08:19:08,216 WARN L197 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 115 [2020-12-22 08:19:08,849 WARN L197 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 99 [2020-12-22 08:19:09,650 WARN L197 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 110 [2020-12-22 08:19:10,366 WARN L197 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-12-22 08:19:10,742 WARN L197 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-12-22 08:19:11,432 WARN L197 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 98 [2020-12-22 08:19:12,409 WARN L197 SmtUtils]: Spent 823.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 128 [2020-12-22 08:19:13,197 WARN L197 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-12-22 08:19:13,990 WARN L197 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 110 [2020-12-22 08:19:14,935 WARN L197 SmtUtils]: Spent 807.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 130 [2020-12-22 08:19:15,315 WARN L197 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-12-22 08:19:15,767 WARN L197 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-12-22 08:19:16,692 WARN L197 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 109 [2020-12-22 08:19:17,455 WARN L197 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 99 [2020-12-22 08:19:18,381 WARN L197 SmtUtils]: Spent 796.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 121 [2020-12-22 08:19:19,153 WARN L197 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 107 [2020-12-22 08:19:20,127 WARN L197 SmtUtils]: Spent 889.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 119 [2020-12-22 08:19:20,902 WARN L197 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 101 [2020-12-22 08:19:21,430 WARN L197 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-12-22 08:19:22,325 WARN L197 SmtUtils]: Spent 756.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 105 [2020-12-22 08:19:23,280 WARN L197 SmtUtils]: Spent 769.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 110 [2020-12-22 08:19:24,063 WARN L197 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 95 [2020-12-22 08:19:25,126 WARN L197 SmtUtils]: Spent 844.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 107 [2020-12-22 08:19:26,131 WARN L197 SmtUtils]: Spent 827.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 116 [2020-12-22 08:19:27,291 WARN L197 SmtUtils]: Spent 972.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 113 [2020-12-22 08:19:28,546 WARN L197 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 138 DAG size of output: 130 [2020-12-22 08:19:29,653 WARN L197 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 118 DAG size of output: 110 [2020-12-22 08:19:30,921 WARN L197 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 113 DAG size of output: 105 [2020-12-22 08:19:32,235 WARN L197 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 126 DAG size of output: 118 [2020-12-22 08:19:33,563 WARN L197 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 132 DAG size of output: 124 [2020-12-22 08:19:34,736 WARN L197 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 115 DAG size of output: 107 [2020-12-22 08:19:36,079 WARN L197 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 125 DAG size of output: 117 [2020-12-22 08:19:37,229 WARN L197 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 124 DAG size of output: 116 [2020-12-22 08:19:38,542 WARN L197 SmtUtils]: Spent 988.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 115 [2020-12-22 08:19:39,839 WARN L197 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 124 DAG size of output: 124 [2020-12-22 08:19:40,926 WARN L197 SmtUtils]: Spent 988.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 101 [2020-12-22 08:19:42,511 WARN L197 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 136 DAG size of output: 128 [2020-12-22 08:19:44,141 WARN L197 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 126 DAG size of output: 118 [2020-12-22 08:19:45,804 WARN L197 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 112 DAG size of output: 112 [2020-12-22 08:19:47,217 WARN L197 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 124 DAG size of output: 116 [2020-12-22 08:19:49,996 WARN L197 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 135 DAG size of output: 127 [2020-12-22 08:19:50,784 WARN L197 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-12-22 08:19:52,327 WARN L197 SmtUtils]: Spent 506.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-12-22 08:19:53,410 WARN L197 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-12-22 08:19:54,258 WARN L197 SmtUtils]: Spent 533.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-12-22 08:19:55,633 WARN L197 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 113 DAG size of output: 113 [2020-12-22 08:19:57,479 WARN L197 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 129 DAG size of output: 121 [2020-12-22 08:19:58,972 WARN L197 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 120 DAG size of output: 112 [2020-12-22 08:20:00,258 WARN L197 SmtUtils]: Spent 520.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-12-22 08:20:01,918 WARN L197 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 124 DAG size of output: 124 [2020-12-22 08:20:03,638 WARN L197 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 106 DAG size of output: 106 [2020-12-22 08:20:05,339 WARN L197 SmtUtils]: Spent 609.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-12-22 08:20:06,209 WARN L197 SmtUtils]: Spent 599.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-12-22 08:20:07,541 WARN L197 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 104 DAG size of output: 96 [2020-12-22 08:20:08,943 WARN L197 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 104 DAG size of output: 96 [2020-12-22 08:20:10,029 WARN L197 SmtUtils]: Spent 779.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-12-22 08:20:11,185 WARN L197 SmtUtils]: Spent 566.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-12-22 08:20:12,674 WARN L197 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 107 DAG size of output: 99 [2020-12-22 08:20:13,890 WARN L197 SmtUtils]: Spent 593.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-12-22 08:20:14,687 WARN L197 SmtUtils]: Spent 645.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-12-22 08:20:16,151 WARN L197 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 110 DAG size of output: 102 [2020-12-22 08:20:16,874 WARN L197 SmtUtils]: Spent 625.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-12-22 08:20:18,319 WARN L197 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 115 DAG size of output: 107 [2020-12-22 08:20:19,818 WARN L197 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 115 DAG size of output: 107 [2020-12-22 08:20:21,466 WARN L197 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 116 DAG size of output: 116 [2020-12-22 08:20:22,477 WARN L197 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-12-22 08:20:23,635 WARN L197 SmtUtils]: Spent 561.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-12-22 08:20:24,595 WARN L197 SmtUtils]: Spent 834.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-12-22 08:20:26,457 WARN L197 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 109 DAG size of output: 101 [2020-12-22 08:20:27,274 WARN L197 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-12-22 08:20:28,856 WARN L197 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 103 DAG size of output: 95 [2020-12-22 08:20:30,579 WARN L197 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 118 DAG size of output: 110 [2020-12-22 08:20:32,384 WARN L197 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 118 DAG size of output: 110