/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.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:56:46,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:56:46,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:56:46,300 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:56:46,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:56:46,304 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:56:46,308 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:56:46,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:56:46,326 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:56:46,327 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:56:46,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:56:46,330 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:56:46,331 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:56:46,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:56:46,338 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:56:46,341 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:56:46,342 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:56:46,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:56:46,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:56:46,351 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:56:46,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:56:46,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:56:46,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:56:46,362 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:56:46,368 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:56:46,377 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:56:46,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:56:46,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:56:46,381 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:56:46,383 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:56:46,383 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:56:46,384 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:56:46,384 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:56:46,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:56:46,385 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:56:46,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:56:46,388 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:56:46,440 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:56:46,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:56:46,444 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:56:46,444 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:56:46,444 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:56:46,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:56:46,445 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:56:46,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:56:46,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:56:46,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:56:46,446 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:56:46,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:56:46,447 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:56:46,447 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:56:46,447 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:56:46,447 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:56:46,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:56:46,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:56:46,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:56:46,448 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:56:46,449 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:56:46,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:56:46,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:56:46,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:56:46,449 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:56:46,449 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:56:46,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:56:46,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:56:46,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:56:46,880 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:56:46,880 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:56:46,881 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-22 08:56:46,950 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d66e05be9/0be7fd95a13a41adbc2eaa2758df75dd/FLAG3ae791a14 [2020-12-22 08:56:47,700 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:56:47,701 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-22 08:56:47,720 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d66e05be9/0be7fd95a13a41adbc2eaa2758df75dd/FLAG3ae791a14 [2020-12-22 08:56:48,005 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d66e05be9/0be7fd95a13a41adbc2eaa2758df75dd [2020-12-22 08:56:48,008 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:56:48,011 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:56:48,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:56:48,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:56:48,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:56:48,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:56:48" (1/1) ... [2020-12-22 08:56:48,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31cb2378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:48, skipping insertion in model container [2020-12-22 08:56:48,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:56:48" (1/1) ... [2020-12-22 08:56:48,032 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:56:48,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:56:48,358 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.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7265,7278] [2020-12-22 08:56:48,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:56:48,414 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:56:48,476 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.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7265,7278] [2020-12-22 08:56:48,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:56:48,566 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:56:48,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:48 WrapperNode [2020-12-22 08:56:48,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:56:48,570 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:56:48,570 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:56:48,571 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:56:48,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:48" (1/1) ... [2020-12-22 08:56:48,616 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:48" (1/1) ... [2020-12-22 08:56:48,693 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:56:48,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:56:48,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:56:48,694 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:56:48,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:48" (1/1) ... [2020-12-22 08:56:48,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:48" (1/1) ... [2020-12-22 08:56:48,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:48" (1/1) ... [2020-12-22 08:56:48,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:48" (1/1) ... [2020-12-22 08:56:48,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:48" (1/1) ... [2020-12-22 08:56:48,723 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:48" (1/1) ... [2020-12-22 08:56:48,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:48" (1/1) ... [2020-12-22 08:56:48,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:56:48,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:56:48,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:56:48,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:56:48,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:48" (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 08:56:48,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:56:48,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:56:48,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:56:48,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:56:49,742 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:56:49,743 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:56:49,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:56:49 BoogieIcfgContainer [2020-12-22 08:56:49,745 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:56:49,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:56:49,759 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:56:49,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:56:49,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:56:48" (1/3) ... [2020-12-22 08:56:49,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d0df2ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:56:49, skipping insertion in model container [2020-12-22 08:56:49,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:48" (2/3) ... [2020-12-22 08:56:49,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d0df2ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:56:49, skipping insertion in model container [2020-12-22 08:56:49,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:56:49" (3/3) ... [2020-12-22 08:56:49,778 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-22 08:56:49,796 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:56:49,808 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:56:49,860 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:56:49,898 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:56:49,898 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:56:49,898 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:56:49,899 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:56:49,899 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:56:49,899 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:56:49,899 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:56:49,899 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:56:49,929 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states. [2020-12-22 08:56:49,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-22 08:56:49,943 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:49,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:56:49,944 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:49,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:49,950 INFO L82 PathProgramCache]: Analyzing trace with hash -2006546999, now seen corresponding path program 1 times [2020-12-22 08:56:49,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:49,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398463346] [2020-12-22 08:56:49,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:50,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:50,477 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 08:56:50,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398463346] [2020-12-22 08:56:50,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:50,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:56:50,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672078363] [2020-12-22 08:56:50,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:56:50,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:50,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:56:50,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:56:50,504 INFO L87 Difference]: Start difference. First operand 138 states. Second operand 3 states. [2020-12-22 08:56:50,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:50,589 INFO L93 Difference]: Finished difference Result 300 states and 490 transitions. [2020-12-22 08:56:50,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:56:50,591 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2020-12-22 08:56:50,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:50,610 INFO L225 Difference]: With dead ends: 300 [2020-12-22 08:56:50,611 INFO L226 Difference]: Without dead ends: 209 [2020-12-22 08:56:50,616 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 08:56:50,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-12-22 08:56:50,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 207. [2020-12-22 08:56:50,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-12-22 08:56:50,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 298 transitions. [2020-12-22 08:56:50,735 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 298 transitions. Word has length 87 [2020-12-22 08:56:50,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:56:50,737 INFO L481 AbstractCegarLoop]: Abstraction has 207 states and 298 transitions. [2020-12-22 08:56:50,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:56:50,737 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 298 transitions. [2020-12-22 08:56:50,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-22 08:56:50,745 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:50,745 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:56:50,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:56:50,747 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:50,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:50,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1559740613, now seen corresponding path program 1 times [2020-12-22 08:56:50,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:50,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172682336] [2020-12-22 08:56:50,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:50,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:51,006 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 08:56:51,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172682336] [2020-12-22 08:56:51,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:51,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:56:51,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274229543] [2020-12-22 08:56:51,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:56:51,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:51,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:56:51,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:56:51,011 INFO L87 Difference]: Start difference. First operand 207 states and 298 transitions. Second operand 3 states. [2020-12-22 08:56:51,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:51,070 INFO L93 Difference]: Finished difference Result 499 states and 762 transitions. [2020-12-22 08:56:51,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:56:51,075 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2020-12-22 08:56:51,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:51,081 INFO L225 Difference]: With dead ends: 499 [2020-12-22 08:56:51,081 INFO L226 Difference]: Without dead ends: 345 [2020-12-22 08:56:51,083 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 08:56:51,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-12-22 08:56:51,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 343. [2020-12-22 08:56:51,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-12-22 08:56:51,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 514 transitions. [2020-12-22 08:56:51,142 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 514 transitions. Word has length 88 [2020-12-22 08:56:51,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:56:51,143 INFO L481 AbstractCegarLoop]: Abstraction has 343 states and 514 transitions. [2020-12-22 08:56:51,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:56:51,143 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 514 transitions. [2020-12-22 08:56:51,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 08:56:51,146 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:51,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:56:51,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:56:51,147 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:51,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:51,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1480148747, now seen corresponding path program 1 times [2020-12-22 08:56:51,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:51,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473297747] [2020-12-22 08:56:51,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:51,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:51,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:56:51,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473297747] [2020-12-22 08:56:51,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:51,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:56:51,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565002345] [2020-12-22 08:56:51,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:56:51,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:51,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:56:51,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:56:51,359 INFO L87 Difference]: Start difference. First operand 343 states and 514 transitions. Second operand 3 states. [2020-12-22 08:56:51,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:51,438 INFO L93 Difference]: Finished difference Result 891 states and 1384 transitions. [2020-12-22 08:56:51,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:56:51,443 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-12-22 08:56:51,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:51,448 INFO L225 Difference]: With dead ends: 891 [2020-12-22 08:56:51,448 INFO L226 Difference]: Without dead ends: 601 [2020-12-22 08:56:51,450 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 08:56:51,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2020-12-22 08:56:51,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 599. [2020-12-22 08:56:51,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2020-12-22 08:56:51,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 918 transitions. [2020-12-22 08:56:51,486 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 918 transitions. Word has length 89 [2020-12-22 08:56:51,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:56:51,487 INFO L481 AbstractCegarLoop]: Abstraction has 599 states and 918 transitions. [2020-12-22 08:56:51,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:56:51,487 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 918 transitions. [2020-12-22 08:56:51,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 08:56:51,488 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:51,488 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:56:51,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:56:51,489 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:51,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:51,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1142089047, now seen corresponding path program 1 times [2020-12-22 08:56:51,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:51,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714063430] [2020-12-22 08:56:51,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:51,624 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 08:56:51,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714063430] [2020-12-22 08:56:51,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:51,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:56:51,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178255884] [2020-12-22 08:56:51,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:56:51,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:51,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:56:51,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:56:51,628 INFO L87 Difference]: Start difference. First operand 599 states and 918 transitions. Second operand 3 states. [2020-12-22 08:56:51,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:51,690 INFO L93 Difference]: Finished difference Result 1627 states and 2544 transitions. [2020-12-22 08:56:51,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:56:51,691 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 90 [2020-12-22 08:56:51,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:51,697 INFO L225 Difference]: With dead ends: 1627 [2020-12-22 08:56:51,697 INFO L226 Difference]: Without dead ends: 1081 [2020-12-22 08:56:51,699 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 08:56:51,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2020-12-22 08:56:51,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 1079. [2020-12-22 08:56:51,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1079 states. [2020-12-22 08:56:51,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1670 transitions. [2020-12-22 08:56:51,753 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1670 transitions. Word has length 90 [2020-12-22 08:56:51,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:56:51,753 INFO L481 AbstractCegarLoop]: Abstraction has 1079 states and 1670 transitions. [2020-12-22 08:56:51,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:56:51,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1670 transitions. [2020-12-22 08:56:51,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 08:56:51,755 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:51,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:56:51,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:56:51,755 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:51,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:51,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1309607801, now seen corresponding path program 1 times [2020-12-22 08:56:51,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:51,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407394280] [2020-12-22 08:56:51,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:51,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:51,839 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 08:56:51,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407394280] [2020-12-22 08:56:51,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:51,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:56:51,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945422482] [2020-12-22 08:56:51,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:56:51,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:51,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:56:51,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:56:51,844 INFO L87 Difference]: Start difference. First operand 1079 states and 1670 transitions. Second operand 3 states. [2020-12-22 08:56:51,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:51,953 INFO L93 Difference]: Finished difference Result 3003 states and 4696 transitions. [2020-12-22 08:56:51,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:56:51,954 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-22 08:56:51,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:51,965 INFO L225 Difference]: With dead ends: 3003 [2020-12-22 08:56:51,965 INFO L226 Difference]: Without dead ends: 1977 [2020-12-22 08:56:51,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:56:51,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1977 states. [2020-12-22 08:56:52,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 1975. [2020-12-22 08:56:52,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1975 states. [2020-12-22 08:56:52,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 3062 transitions. [2020-12-22 08:56:52,101 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 3062 transitions. Word has length 91 [2020-12-22 08:56:52,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:56:52,102 INFO L481 AbstractCegarLoop]: Abstraction has 1975 states and 3062 transitions. [2020-12-22 08:56:52,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:56:52,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 3062 transitions. [2020-12-22 08:56:52,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 08:56:52,103 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:52,103 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:56:52,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:56:52,103 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:52,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:52,104 INFO L82 PathProgramCache]: Analyzing trace with hash 582949359, now seen corresponding path program 1 times [2020-12-22 08:56:52,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:52,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075831128] [2020-12-22 08:56:52,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:52,220 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 08:56:52,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075831128] [2020-12-22 08:56:52,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:52,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:56:52,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656135044] [2020-12-22 08:56:52,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:56:52,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:52,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:56:52,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:56:52,227 INFO L87 Difference]: Start difference. First operand 1975 states and 3062 transitions. Second operand 3 states. [2020-12-22 08:56:52,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:52,533 INFO L93 Difference]: Finished difference Result 5563 states and 8664 transitions. [2020-12-22 08:56:52,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:56:52,534 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2020-12-22 08:56:52,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:52,561 INFO L225 Difference]: With dead ends: 5563 [2020-12-22 08:56:52,561 INFO L226 Difference]: Without dead ends: 3641 [2020-12-22 08:56:52,566 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 08:56:52,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3641 states. [2020-12-22 08:56:52,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3641 to 3639. [2020-12-22 08:56:52,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3639 states. [2020-12-22 08:56:52,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 5622 transitions. [2020-12-22 08:56:52,849 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 5622 transitions. Word has length 92 [2020-12-22 08:56:52,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:56:52,850 INFO L481 AbstractCegarLoop]: Abstraction has 3639 states and 5622 transitions. [2020-12-22 08:56:52,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:56:52,850 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 5622 transitions. [2020-12-22 08:56:52,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 08:56:52,851 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:52,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:56:52,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:56:52,852 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:52,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:52,855 INFO L82 PathProgramCache]: Analyzing trace with hash -496500112, now seen corresponding path program 1 times [2020-12-22 08:56:52,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:52,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725301936] [2020-12-22 08:56:52,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:53,009 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 08:56:53,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725301936] [2020-12-22 08:56:53,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:53,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:56:53,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040718917] [2020-12-22 08:56:53,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:56:53,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:53,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:56:53,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:56:53,012 INFO L87 Difference]: Start difference. First operand 3639 states and 5622 transitions. Second operand 5 states. [2020-12-22 08:56:53,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:53,476 INFO L93 Difference]: Finished difference Result 7225 states and 11191 transitions. [2020-12-22 08:56:53,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:56:53,476 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-12-22 08:56:53,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:53,495 INFO L225 Difference]: With dead ends: 7225 [2020-12-22 08:56:53,496 INFO L226 Difference]: Without dead ends: 3639 [2020-12-22 08:56:53,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:56:53,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3639 states. [2020-12-22 08:56:53,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3639 to 3639. [2020-12-22 08:56:53,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3639 states. [2020-12-22 08:56:53,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 5590 transitions. [2020-12-22 08:56:53,776 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 5590 transitions. Word has length 93 [2020-12-22 08:56:53,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:56:53,777 INFO L481 AbstractCegarLoop]: Abstraction has 3639 states and 5590 transitions. [2020-12-22 08:56:53,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:56:53,777 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 5590 transitions. [2020-12-22 08:56:53,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 08:56:53,779 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:53,780 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:56:53,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:56:53,780 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:53,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:53,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1956436651, now seen corresponding path program 1 times [2020-12-22 08:56:53,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:53,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214980341] [2020-12-22 08:56:53,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:53,931 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 08:56:53,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214980341] [2020-12-22 08:56:53,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:53,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:56:53,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109682974] [2020-12-22 08:56:53,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:56:53,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:53,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:56:53,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:56:53,933 INFO L87 Difference]: Start difference. First operand 3639 states and 5590 transitions. Second operand 6 states. [2020-12-22 08:56:54,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:54,596 INFO L93 Difference]: Finished difference Result 10747 states and 16536 transitions. [2020-12-22 08:56:54,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:56:54,596 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2020-12-22 08:56:54,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:54,632 INFO L225 Difference]: With dead ends: 10747 [2020-12-22 08:56:54,632 INFO L226 Difference]: Without dead ends: 7161 [2020-12-22 08:56:54,638 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 08:56:54,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7161 states. [2020-12-22 08:56:55,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7161 to 7159. [2020-12-22 08:56:55,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7159 states. [2020-12-22 08:56:55,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7159 states to 7159 states and 10934 transitions. [2020-12-22 08:56:55,187 INFO L78 Accepts]: Start accepts. Automaton has 7159 states and 10934 transitions. Word has length 93 [2020-12-22 08:56:55,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:56:55,187 INFO L481 AbstractCegarLoop]: Abstraction has 7159 states and 10934 transitions. [2020-12-22 08:56:55,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:56:55,188 INFO L276 IsEmpty]: Start isEmpty. Operand 7159 states and 10934 transitions. [2020-12-22 08:56:55,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 08:56:55,189 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:55,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:56:55,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:56:55,189 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:55,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:55,190 INFO L82 PathProgramCache]: Analyzing trace with hash -803132720, now seen corresponding path program 1 times [2020-12-22 08:56:55,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:55,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869760649] [2020-12-22 08:56:55,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:55,288 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 08:56:55,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869760649] [2020-12-22 08:56:55,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:55,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:56:55,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173806106] [2020-12-22 08:56:55,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:56:55,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:55,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:56:55,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:56:55,301 INFO L87 Difference]: Start difference. First operand 7159 states and 10934 transitions. Second operand 6 states. [2020-12-22 08:56:56,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:56,423 INFO L93 Difference]: Finished difference Result 21307 states and 32568 transitions. [2020-12-22 08:56:56,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:56:56,423 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2020-12-22 08:56:56,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:56,481 INFO L225 Difference]: With dead ends: 21307 [2020-12-22 08:56:56,481 INFO L226 Difference]: Without dead ends: 14201 [2020-12-22 08:56:56,499 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 08:56:56,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14201 states. [2020-12-22 08:56:57,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14201 to 14199. [2020-12-22 08:56:57,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14199 states. [2020-12-22 08:56:57,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14199 states to 14199 states and 21622 transitions. [2020-12-22 08:56:57,548 INFO L78 Accepts]: Start accepts. Automaton has 14199 states and 21622 transitions. Word has length 93 [2020-12-22 08:56:57,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:56:57,549 INFO L481 AbstractCegarLoop]: Abstraction has 14199 states and 21622 transitions. [2020-12-22 08:56:57,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:56:57,549 INFO L276 IsEmpty]: Start isEmpty. Operand 14199 states and 21622 transitions. [2020-12-22 08:56:57,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 08:56:57,550 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:57,550 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:56:57,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:56:57,551 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:57,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:57,552 INFO L82 PathProgramCache]: Analyzing trace with hash 2027763019, now seen corresponding path program 1 times [2020-12-22 08:56:57,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:57,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005275899] [2020-12-22 08:56:57,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:57,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:56:57,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005275899] [2020-12-22 08:56:57,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:57,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:56:57,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448870838] [2020-12-22 08:56:57,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:56:57,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:57,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:56:57,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:56:57,669 INFO L87 Difference]: Start difference. First operand 14199 states and 21622 transitions. Second operand 6 states. [2020-12-22 08:56:59,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:59,623 INFO L93 Difference]: Finished difference Result 42363 states and 64504 transitions. [2020-12-22 08:56:59,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:56:59,623 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2020-12-22 08:56:59,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:59,700 INFO L225 Difference]: With dead ends: 42363 [2020-12-22 08:56:59,700 INFO L226 Difference]: Without dead ends: 28217 [2020-12-22 08:56:59,725 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 08:56:59,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28217 states. [2020-12-22 08:57:01,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28217 to 28215. [2020-12-22 08:57:01,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28215 states. [2020-12-22 08:57:01,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28215 states to 28215 states and 42806 transitions. [2020-12-22 08:57:01,829 INFO L78 Accepts]: Start accepts. Automaton has 28215 states and 42806 transitions. Word has length 93 [2020-12-22 08:57:01,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:57:01,830 INFO L481 AbstractCegarLoop]: Abstraction has 28215 states and 42806 transitions. [2020-12-22 08:57:01,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:57:01,830 INFO L276 IsEmpty]: Start isEmpty. Operand 28215 states and 42806 transitions. [2020-12-22 08:57:01,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 08:57:01,831 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:57:01,832 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:57:01,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:57:01,832 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:57:01,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:57:01,833 INFO L82 PathProgramCache]: Analyzing trace with hash -993336272, now seen corresponding path program 1 times [2020-12-22 08:57:01,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:57:01,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000411684] [2020-12-22 08:57:01,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:57:01,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:57:01,931 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 08:57:01,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000411684] [2020-12-22 08:57:01,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:57:01,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:57:01,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675469783] [2020-12-22 08:57:01,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:57:01,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:57:01,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:57:01,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:57:01,934 INFO L87 Difference]: Start difference. First operand 28215 states and 42806 transitions. Second operand 5 states. [2020-12-22 08:57:03,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:57:03,614 INFO L93 Difference]: Finished difference Result 56377 states and 85559 transitions. [2020-12-22 08:57:03,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:57:03,615 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-12-22 08:57:03,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:57:03,683 INFO L225 Difference]: With dead ends: 56377 [2020-12-22 08:57:03,683 INFO L226 Difference]: Without dead ends: 28215 [2020-12-22 08:57:03,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:57:03,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28215 states. [2020-12-22 08:57:05,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28215 to 28215. [2020-12-22 08:57:05,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28215 states. [2020-12-22 08:57:05,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28215 states to 28215 states and 42550 transitions. [2020-12-22 08:57:05,662 INFO L78 Accepts]: Start accepts. Automaton has 28215 states and 42550 transitions. Word has length 93 [2020-12-22 08:57:05,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:57:05,662 INFO L481 AbstractCegarLoop]: Abstraction has 28215 states and 42550 transitions. [2020-12-22 08:57:05,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:57:05,662 INFO L276 IsEmpty]: Start isEmpty. Operand 28215 states and 42550 transitions. [2020-12-22 08:57:05,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 08:57:05,664 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:57:05,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:57:05,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:57:05,664 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:57:05,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:57:05,665 INFO L82 PathProgramCache]: Analyzing trace with hash 727994603, now seen corresponding path program 1 times [2020-12-22 08:57:05,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:57:05,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745129568] [2020-12-22 08:57:05,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:57:05,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:57:05,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:57:05,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745129568] [2020-12-22 08:57:05,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:57:05,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:57:05,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170146454] [2020-12-22 08:57:05,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:57:05,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:57:05,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:57:05,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:57:05,858 INFO L87 Difference]: Start difference. First operand 28215 states and 42550 transitions. Second operand 9 states. [2020-12-22 08:57:30,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:57:30,380 INFO L93 Difference]: Finished difference Result 422483 states and 637508 transitions. [2020-12-22 08:57:30,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:57:30,381 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-12-22 08:57:30,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:57:31,551 INFO L225 Difference]: With dead ends: 422483 [2020-12-22 08:57:31,551 INFO L226 Difference]: Without dead ends: 394321 [2020-12-22 08:57:31,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-12-22 08:57:32,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394321 states. [2020-12-22 08:57:40,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394321 to 56375. [2020-12-22 08:57:40,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56375 states. [2020-12-22 08:57:40,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56375 states to 56375 states and 84022 transitions. [2020-12-22 08:57:40,547 INFO L78 Accepts]: Start accepts. Automaton has 56375 states and 84022 transitions. Word has length 93 [2020-12-22 08:57:40,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:57:40,547 INFO L481 AbstractCegarLoop]: Abstraction has 56375 states and 84022 transitions. [2020-12-22 08:57:40,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:57:40,547 INFO L276 IsEmpty]: Start isEmpty. Operand 56375 states and 84022 transitions. [2020-12-22 08:57:40,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 08:57:40,548 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:57:40,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:57:40,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:57:40,549 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:57:40,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:57:40,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1398673945, now seen corresponding path program 1 times [2020-12-22 08:57:40,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:57:40,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88428981] [2020-12-22 08:57:40,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:57:40,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:57:40,628 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 08:57:40,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88428981] [2020-12-22 08:57:40,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:57:40,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:57:40,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119881699] [2020-12-22 08:57:40,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:57:40,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:57:40,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:57:40,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:57:40,630 INFO L87 Difference]: Start difference. First operand 56375 states and 84022 transitions. Second operand 3 states. [2020-12-22 08:57:48,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:57:48,277 INFO L93 Difference]: Finished difference Result 138299 states and 205368 transitions. [2020-12-22 08:57:48,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:57:48,277 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-12-22 08:57:48,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:57:48,366 INFO L225 Difference]: With dead ends: 138299 [2020-12-22 08:57:48,366 INFO L226 Difference]: Without dead ends: 81977 [2020-12-22 08:57:48,402 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 08:57:48,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81977 states. [2020-12-22 08:57:56,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81977 to 81463. [2020-12-22 08:57:56,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81463 states. [2020-12-22 08:57:56,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81463 states to 81463 states and 119606 transitions. [2020-12-22 08:57:56,311 INFO L78 Accepts]: Start accepts. Automaton has 81463 states and 119606 transitions. Word has length 95 [2020-12-22 08:57:56,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:57:56,311 INFO L481 AbstractCegarLoop]: Abstraction has 81463 states and 119606 transitions. [2020-12-22 08:57:56,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:57:56,312 INFO L276 IsEmpty]: Start isEmpty. Operand 81463 states and 119606 transitions. [2020-12-22 08:57:56,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 08:57:56,313 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:57:56,313 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:57:56,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:57:56,313 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:57:56,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:57:56,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1377671290, now seen corresponding path program 1 times [2020-12-22 08:57:56,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:57:56,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399089639] [2020-12-22 08:57:56,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:57:56,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:57:56,932 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 08:57:56,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399089639] [2020-12-22 08:57:56,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:57:56,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:57:56,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124071371] [2020-12-22 08:57:56,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:57:56,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:57:56,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:57:56,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:57:56,935 INFO L87 Difference]: Start difference. First operand 81463 states and 119606 transitions. Second operand 9 states. [2020-12-22 08:58:09,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:58:09,794 INFO L93 Difference]: Finished difference Result 203453 states and 299449 transitions. [2020-12-22 08:58:09,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 08:58:09,795 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 95 [2020-12-22 08:58:09,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:58:10,125 INFO L225 Difference]: With dead ends: 203453 [2020-12-22 08:58:10,125 INFO L226 Difference]: Without dead ends: 122043 [2020-12-22 08:58:10,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2020-12-22 08:58:10,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122043 states. [2020-12-22 08:58:19,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122043 to 81463. [2020-12-22 08:58:19,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81463 states. [2020-12-22 08:58:20,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81463 states to 81463 states and 118838 transitions. [2020-12-22 08:58:20,041 INFO L78 Accepts]: Start accepts. Automaton has 81463 states and 118838 transitions. Word has length 95 [2020-12-22 08:58:20,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:58:20,051 INFO L481 AbstractCegarLoop]: Abstraction has 81463 states and 118838 transitions. [2020-12-22 08:58:20,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:58:20,051 INFO L276 IsEmpty]: Start isEmpty. Operand 81463 states and 118838 transitions. [2020-12-22 08:58:20,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-22 08:58:20,053 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:58:20,053 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:58:20,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:58:20,053 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:58:20,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:58:20,054 INFO L82 PathProgramCache]: Analyzing trace with hash -78315606, now seen corresponding path program 1 times [2020-12-22 08:58:20,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:58:20,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634531984] [2020-12-22 08:58:20,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:58:20,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:58:20,110 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 08:58:20,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634531984] [2020-12-22 08:58:20,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:58:20,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:58:20,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115115082] [2020-12-22 08:58:20,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:58:20,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:58:20,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:58:20,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:58:20,113 INFO L87 Difference]: Start difference. First operand 81463 states and 118838 transitions. Second operand 3 states. [2020-12-22 08:58:34,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:58:34,324 INFO L93 Difference]: Finished difference Result 184382 states and 270908 transitions. [2020-12-22 08:58:34,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:58:34,324 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 96 [2020-12-22 08:58:34,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:58:34,480 INFO L225 Difference]: With dead ends: 184382 [2020-12-22 08:58:34,480 INFO L226 Difference]: Without dead ends: 128059 [2020-12-22 08:58:34,525 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 08:58:34,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128059 states. [2020-12-22 08:58:49,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128059 to 128057. [2020-12-22 08:58:49,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128057 states. [2020-12-22 08:58:49,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128057 states to 128057 states and 186424 transitions. [2020-12-22 08:58:49,822 INFO L78 Accepts]: Start accepts. Automaton has 128057 states and 186424 transitions. Word has length 96 [2020-12-22 08:58:49,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:58:49,822 INFO L481 AbstractCegarLoop]: Abstraction has 128057 states and 186424 transitions. [2020-12-22 08:58:49,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:58:49,823 INFO L276 IsEmpty]: Start isEmpty. Operand 128057 states and 186424 transitions. [2020-12-22 08:58:49,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-22 08:58:49,824 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:58:49,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:58:49,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:58:49,826 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:58:49,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:58:49,827 INFO L82 PathProgramCache]: Analyzing trace with hash 239953701, now seen corresponding path program 1 times [2020-12-22 08:58:49,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:58:49,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025087776] [2020-12-22 08:58:49,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:58:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:58:49,934 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 08:58:49,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025087776] [2020-12-22 08:58:49,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:58:49,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:58:49,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494661843] [2020-12-22 08:58:49,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:58:49,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:58:49,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:58:49,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:58:49,938 INFO L87 Difference]: Start difference. First operand 128057 states and 186424 transitions. Second operand 5 states. [2020-12-22 08:59:18,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:59:18,334 INFO L93 Difference]: Finished difference Result 243217 states and 352980 transitions. [2020-12-22 08:59:18,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:59:18,336 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-12-22 08:59:18,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:59:18,845 INFO L225 Difference]: With dead ends: 243217 [2020-12-22 08:59:18,845 INFO L226 Difference]: Without dead ends: 243215 [2020-12-22 08:59:18,896 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 08:59:19,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243215 states. [2020-12-22 08:59:36,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243215 to 132153. [2020-12-22 08:59:36,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132153 states. [2020-12-22 08:59:36,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132153 states to 132153 states and 190264 transitions. [2020-12-22 08:59:36,846 INFO L78 Accepts]: Start accepts. Automaton has 132153 states and 190264 transitions. Word has length 96 [2020-12-22 08:59:36,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:59:36,847 INFO L481 AbstractCegarLoop]: Abstraction has 132153 states and 190264 transitions. [2020-12-22 08:59:36,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:59:36,847 INFO L276 IsEmpty]: Start isEmpty. Operand 132153 states and 190264 transitions. [2020-12-22 08:59:36,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-22 08:59:36,878 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:59:36,879 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:36,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:59:36,879 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:59:36,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:59:36,880 INFO L82 PathProgramCache]: Analyzing trace with hash -714656545, now seen corresponding path program 1 times [2020-12-22 08:59:36,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:59:36,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895868944] [2020-12-22 08:59:36,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:59:36,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:59:37,125 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 08:59:37,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895868944] [2020-12-22 08:59:37,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:59:37,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:59:37,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645526008] [2020-12-22 08:59:37,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:59:37,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:59:37,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:59:37,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:59:37,129 INFO L87 Difference]: Start difference. First operand 132153 states and 190264 transitions. Second operand 9 states.