/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:28:30,942 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:28:30,945 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:28:30,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:28:30,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:28:30,988 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:28:30,989 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:28:30,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:28:30,994 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:28:30,995 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:28:30,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:28:30,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:28:30,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:28:31,000 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:28:31,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:28:31,003 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:28:31,004 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:28:31,006 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:28:31,008 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:28:31,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:28:31,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:28:31,016 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:28:31,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:28:31,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:28:31,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:28:31,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:28:31,028 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:28:31,029 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:28:31,030 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:28:31,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:28:31,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:28:31,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:28:31,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:28:31,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:28:31,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:28:31,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:28:31,057 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:28:31,117 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:28:31,117 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:28:31,120 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:28:31,120 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:28:31,121 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:28:31,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:28:31,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:28:31,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:28:31,122 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:28:31,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:28:31,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:28:31,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:28:31,124 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:28:31,124 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:28:31,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:28:31,125 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:28:31,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:28:31,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:28:31,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:28:31,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:28:31,126 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:28:31,126 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:28:31,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:28:31,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:28:31,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:28:31,127 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:28:31,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:28:31,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:28:31,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:28:31,623 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:28:31,624 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:28:31,625 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 08:28:31,709 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34d0f7606/2d197a33fe3f4ce1bca99cba94cf128a/FLAG54870de98 [2020-12-22 08:28:32,522 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:28:32,522 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 08:28:32,542 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34d0f7606/2d197a33fe3f4ce1bca99cba94cf128a/FLAG54870de98 [2020-12-22 08:28:32,564 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34d0f7606/2d197a33fe3f4ce1bca99cba94cf128a [2020-12-22 08:28:32,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:28:32,570 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:28:32,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:28:32,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:28:32,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:28:32,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:28:32" (1/1) ... [2020-12-22 08:28:32,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@661fe290 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:28:32, skipping insertion in model container [2020-12-22 08:28:32,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:28:32" (1/1) ... [2020-12-22 08:28:32,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:28:32,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:28:32,927 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[8056,8069] [2020-12-22 08:28:33,029 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:28:33,057 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:28:33,137 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[8056,8069] [2020-12-22 08:28:33,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:28:33,274 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:28:33,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:28:33 WrapperNode [2020-12-22 08:28:33,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:28:33,279 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:28:33,283 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:28:33,283 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:28:33,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:28:33" (1/1) ... [2020-12-22 08:28:33,328 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:28:33" (1/1) ... [2020-12-22 08:28:33,436 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:28:33,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:28:33,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:28:33,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:28:33,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:28:33" (1/1) ... [2020-12-22 08:28:33,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:28:33" (1/1) ... [2020-12-22 08:28:33,486 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:28:33" (1/1) ... [2020-12-22 08:28:33,486 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:28:33" (1/1) ... [2020-12-22 08:28:33,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:28:33" (1/1) ... [2020-12-22 08:28:33,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:28:33" (1/1) ... [2020-12-22 08:28:33,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:28:33" (1/1) ... [2020-12-22 08:28:33,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:28:33,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:28:33,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:28:33,524 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:28:33,525 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:28:33" (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 08:28:33,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:28:33,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:28:33,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:28:33,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:28:34,714 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:28:34,715 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:28:34,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:28:34 BoogieIcfgContainer [2020-12-22 08:28:34,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:28:34,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:28:34,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:28:34,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:28:34,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:28:32" (1/3) ... [2020-12-22 08:28:34,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@364e514c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:28:34, skipping insertion in model container [2020-12-22 08:28:34,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:28:33" (2/3) ... [2020-12-22 08:28:34,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@364e514c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:28:34, skipping insertion in model container [2020-12-22 08:28:34,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:28:34" (3/3) ... [2020-12-22 08:28:34,729 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 08:28:34,737 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:28:34,744 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:28:34,767 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:28:34,799 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:28:34,800 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:28:34,800 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:28:34,800 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:28:34,800 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:28:34,800 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:28:34,801 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:28:34,801 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:28:34,825 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-12-22 08:28:34,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 08:28:34,837 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:28:34,838 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] [2020-12-22 08:28:34,838 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:28:34,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:28:34,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1949123702, now seen corresponding path program 1 times [2020-12-22 08:28:34,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:28:34,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36434058] [2020-12-22 08:28:34,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:28:35,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:28:35,345 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 08:28:35,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36434058] [2020-12-22 08:28:35,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:28:35,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:28:35,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597727611] [2020-12-22 08:28:35,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:28:35,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:28:35,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:28:35,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:28:35,391 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2020-12-22 08:28:35,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:28:35,566 INFO L93 Difference]: Finished difference Result 436 states and 718 transitions. [2020-12-22 08:28:35,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:28:35,568 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-22 08:28:35,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:28:35,585 INFO L225 Difference]: With dead ends: 436 [2020-12-22 08:28:35,586 INFO L226 Difference]: Without dead ends: 328 [2020-12-22 08:28:35,589 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 08:28:35,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-12-22 08:28:35,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 326. [2020-12-22 08:28:35,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-12-22 08:28:35,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 490 transitions. [2020-12-22 08:28:35,671 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 490 transitions. Word has length 80 [2020-12-22 08:28:35,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:28:35,676 INFO L481 AbstractCegarLoop]: Abstraction has 326 states and 490 transitions. [2020-12-22 08:28:35,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:28:35,677 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 490 transitions. [2020-12-22 08:28:35,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 08:28:35,680 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:28:35,681 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] [2020-12-22 08:28:35,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:28:35,681 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:28:35,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:28:35,682 INFO L82 PathProgramCache]: Analyzing trace with hash 13403552, now seen corresponding path program 1 times [2020-12-22 08:28:35,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:28:35,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232087952] [2020-12-22 08:28:35,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:28:35,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:28:36,144 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 08:28:36,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232087952] [2020-12-22 08:28:36,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:28:36,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:28:36,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937275484] [2020-12-22 08:28:36,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:28:36,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:28:36,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:28:36,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:28:36,150 INFO L87 Difference]: Start difference. First operand 326 states and 490 transitions. Second operand 7 states. [2020-12-22 08:28:36,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:28:36,586 INFO L93 Difference]: Finished difference Result 1412 states and 2192 transitions. [2020-12-22 08:28:36,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:28:36,587 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 81 [2020-12-22 08:28:36,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:28:36,597 INFO L225 Difference]: With dead ends: 1412 [2020-12-22 08:28:36,597 INFO L226 Difference]: Without dead ends: 1166 [2020-12-22 08:28:36,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:28:36,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2020-12-22 08:28:36,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1158. [2020-12-22 08:28:36,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1158 states. [2020-12-22 08:28:36,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1791 transitions. [2020-12-22 08:28:36,691 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1791 transitions. Word has length 81 [2020-12-22 08:28:36,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:28:36,691 INFO L481 AbstractCegarLoop]: Abstraction has 1158 states and 1791 transitions. [2020-12-22 08:28:36,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:28:36,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1791 transitions. [2020-12-22 08:28:36,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 08:28:36,698 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:28:36,698 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] [2020-12-22 08:28:36,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:28:36,699 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:28:36,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:28:36,700 INFO L82 PathProgramCache]: Analyzing trace with hash 2050473049, now seen corresponding path program 1 times [2020-12-22 08:28:36,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:28:36,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480217438] [2020-12-22 08:28:36,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:28:36,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:28:36,879 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 08:28:36,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480217438] [2020-12-22 08:28:36,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:28:36,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:28:36,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465362911] [2020-12-22 08:28:36,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:28:36,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:28:36,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:28:36,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:28:36,889 INFO L87 Difference]: Start difference. First operand 1158 states and 1791 transitions. Second operand 6 states. [2020-12-22 08:28:37,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:28:37,453 INFO L93 Difference]: Finished difference Result 3853 states and 6046 transitions. [2020-12-22 08:28:37,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:28:37,453 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 82 [2020-12-22 08:28:37,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:28:37,470 INFO L225 Difference]: With dead ends: 3853 [2020-12-22 08:28:37,470 INFO L226 Difference]: Without dead ends: 2776 [2020-12-22 08:28:37,474 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 08:28:37,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2776 states. [2020-12-22 08:28:37,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2776 to 2772. [2020-12-22 08:28:37,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2772 states. [2020-12-22 08:28:37,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2772 states to 2772 states and 4337 transitions. [2020-12-22 08:28:37,683 INFO L78 Accepts]: Start accepts. Automaton has 2772 states and 4337 transitions. Word has length 82 [2020-12-22 08:28:37,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:28:37,684 INFO L481 AbstractCegarLoop]: Abstraction has 2772 states and 4337 transitions. [2020-12-22 08:28:37,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:28:37,684 INFO L276 IsEmpty]: Start isEmpty. Operand 2772 states and 4337 transitions. [2020-12-22 08:28:37,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 08:28:37,688 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:28:37,689 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] [2020-12-22 08:28:37,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:28:37,689 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:28:37,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:28:37,690 INFO L82 PathProgramCache]: Analyzing trace with hash 269412074, now seen corresponding path program 1 times [2020-12-22 08:28:37,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:28:37,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593743326] [2020-12-22 08:28:37,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:28:37,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:28:37,789 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 08:28:37,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593743326] [2020-12-22 08:28:37,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:28:37,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:28:37,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739590562] [2020-12-22 08:28:37,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:28:37,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:28:37,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:28:37,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:28:37,795 INFO L87 Difference]: Start difference. First operand 2772 states and 4337 transitions. Second operand 5 states. [2020-12-22 08:28:38,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:28:38,488 INFO L93 Difference]: Finished difference Result 7771 states and 12233 transitions. [2020-12-22 08:28:38,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:28:38,489 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-12-22 08:28:38,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:28:38,517 INFO L225 Difference]: With dead ends: 7771 [2020-12-22 08:28:38,517 INFO L226 Difference]: Without dead ends: 5110 [2020-12-22 08:28:38,523 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 08:28:38,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5110 states. [2020-12-22 08:28:38,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5110 to 5108. [2020-12-22 08:28:38,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5108 states. [2020-12-22 08:28:38,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5108 states to 5108 states and 7995 transitions. [2020-12-22 08:28:38,960 INFO L78 Accepts]: Start accepts. Automaton has 5108 states and 7995 transitions. Word has length 82 [2020-12-22 08:28:38,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:28:38,961 INFO L481 AbstractCegarLoop]: Abstraction has 5108 states and 7995 transitions. [2020-12-22 08:28:38,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:28:38,961 INFO L276 IsEmpty]: Start isEmpty. Operand 5108 states and 7995 transitions. [2020-12-22 08:28:38,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 08:28:38,965 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:28:38,965 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] [2020-12-22 08:28:38,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:28:38,965 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:28:38,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:28:38,966 INFO L82 PathProgramCache]: Analyzing trace with hash 778028859, now seen corresponding path program 1 times [2020-12-22 08:28:38,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:28:38,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961035753] [2020-12-22 08:28:38,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:28:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:28:39,064 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 08:28:39,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961035753] [2020-12-22 08:28:39,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:28:39,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:28:39,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346595187] [2020-12-22 08:28:39,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:28:39,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:28:39,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:28:39,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:28:39,067 INFO L87 Difference]: Start difference. First operand 5108 states and 7995 transitions. Second operand 5 states. [2020-12-22 08:28:39,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:28:39,993 INFO L93 Difference]: Finished difference Result 14709 states and 23134 transitions. [2020-12-22 08:28:39,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:28:39,995 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-12-22 08:28:39,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:28:40,050 INFO L225 Difference]: With dead ends: 14709 [2020-12-22 08:28:40,050 INFO L226 Difference]: Without dead ends: 9746 [2020-12-22 08:28:40,060 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 08:28:40,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9746 states. [2020-12-22 08:28:40,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9746 to 9744. [2020-12-22 08:28:40,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9744 states. [2020-12-22 08:28:40,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9744 states to 9744 states and 15256 transitions. [2020-12-22 08:28:40,839 INFO L78 Accepts]: Start accepts. Automaton has 9744 states and 15256 transitions. Word has length 82 [2020-12-22 08:28:40,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:28:40,840 INFO L481 AbstractCegarLoop]: Abstraction has 9744 states and 15256 transitions. [2020-12-22 08:28:40,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:28:40,840 INFO L276 IsEmpty]: Start isEmpty. Operand 9744 states and 15256 transitions. [2020-12-22 08:28:40,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 08:28:40,845 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:28:40,845 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] [2020-12-22 08:28:40,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:28:40,846 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:28:40,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:28:40,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1091254392, now seen corresponding path program 1 times [2020-12-22 08:28:40,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:28:40,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203270819] [2020-12-22 08:28:40,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:28:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:28:40,948 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 08:28:40,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203270819] [2020-12-22 08:28:40,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:28:40,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:28:40,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862215549] [2020-12-22 08:28:40,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:28:40,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:28:40,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:28:40,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:28:40,951 INFO L87 Difference]: Start difference. First operand 9744 states and 15256 transitions. Second operand 5 states. [2020-12-22 08:28:42,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:28:42,570 INFO L93 Difference]: Finished difference Result 28886 states and 45310 transitions. [2020-12-22 08:28:42,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:28:42,571 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-12-22 08:28:42,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:28:42,647 INFO L225 Difference]: With dead ends: 28886 [2020-12-22 08:28:42,648 INFO L226 Difference]: Without dead ends: 19200 [2020-12-22 08:28:42,665 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 08:28:42,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19200 states. [2020-12-22 08:28:44,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19200 to 19198. [2020-12-22 08:28:44,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19198 states. [2020-12-22 08:28:44,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19198 states to 19198 states and 29927 transitions. [2020-12-22 08:28:44,156 INFO L78 Accepts]: Start accepts. Automaton has 19198 states and 29927 transitions. Word has length 82 [2020-12-22 08:28:44,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:28:44,156 INFO L481 AbstractCegarLoop]: Abstraction has 19198 states and 29927 transitions. [2020-12-22 08:28:44,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:28:44,156 INFO L276 IsEmpty]: Start isEmpty. Operand 19198 states and 29927 transitions. [2020-12-22 08:28:44,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 08:28:44,161 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:28:44,162 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] [2020-12-22 08:28:44,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:28:44,162 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:28:44,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:28:44,163 INFO L82 PathProgramCache]: Analyzing trace with hash 980453495, now seen corresponding path program 1 times [2020-12-22 08:28:44,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:28:44,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272928283] [2020-12-22 08:28:44,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:28:44,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:28:44,292 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 08:28:44,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272928283] [2020-12-22 08:28:44,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:28:44,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:28:44,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158552961] [2020-12-22 08:28:44,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:28:44,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:28:44,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:28:44,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:28:44,295 INFO L87 Difference]: Start difference. First operand 19198 states and 29927 transitions. Second operand 6 states. [2020-12-22 08:28:47,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:28:47,236 INFO L93 Difference]: Finished difference Result 71566 states and 111476 transitions. [2020-12-22 08:28:47,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:28:47,237 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 82 [2020-12-22 08:28:47,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:28:47,404 INFO L225 Difference]: With dead ends: 71566 [2020-12-22 08:28:47,404 INFO L226 Difference]: Without dead ends: 52410 [2020-12-22 08:28:47,451 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 08:28:47,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52410 states. [2020-12-22 08:28:50,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52410 to 52406. [2020-12-22 08:28:50,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52406 states. [2020-12-22 08:28:50,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52406 states to 52406 states and 81159 transitions. [2020-12-22 08:28:50,585 INFO L78 Accepts]: Start accepts. Automaton has 52406 states and 81159 transitions. Word has length 82 [2020-12-22 08:28:50,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:28:50,585 INFO L481 AbstractCegarLoop]: Abstraction has 52406 states and 81159 transitions. [2020-12-22 08:28:50,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:28:50,586 INFO L276 IsEmpty]: Start isEmpty. Operand 52406 states and 81159 transitions. [2020-12-22 08:28:50,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 08:28:50,599 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:28:50,599 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:28:50,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:28:50,600 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:28:50,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:28:50,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1660254060, now seen corresponding path program 1 times [2020-12-22 08:28:50,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:28:50,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442703852] [2020-12-22 08:28:50,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:28:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:28:50,704 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 08:28:50,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442703852] [2020-12-22 08:28:50,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:28:50,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:28:50,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726541728] [2020-12-22 08:28:50,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:28:50,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:28:50,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:28:50,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:28:50,707 INFO L87 Difference]: Start difference. First operand 52406 states and 81159 transitions. Second operand 5 states. [2020-12-22 08:28:55,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:28:55,628 INFO L93 Difference]: Finished difference Result 98736 states and 152128 transitions. [2020-12-22 08:28:55,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:28:55,629 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-12-22 08:28:55,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:28:55,922 INFO L225 Difference]: With dead ends: 98736 [2020-12-22 08:28:55,922 INFO L226 Difference]: Without dead ends: 98734 [2020-12-22 08:28:55,970 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 08:28:56,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98734 states. [2020-12-22 08:28:59,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98734 to 53078. [2020-12-22 08:28:59,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53078 states. [2020-12-22 08:28:59,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53078 states to 53078 states and 81831 transitions. [2020-12-22 08:28:59,738 INFO L78 Accepts]: Start accepts. Automaton has 53078 states and 81831 transitions. Word has length 83 [2020-12-22 08:28:59,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:28:59,738 INFO L481 AbstractCegarLoop]: Abstraction has 53078 states and 81831 transitions. [2020-12-22 08:28:59,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:28:59,739 INFO L276 IsEmpty]: Start isEmpty. Operand 53078 states and 81831 transitions. [2020-12-22 08:28:59,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 08:28:59,752 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:28:59,752 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] [2020-12-22 08:28:59,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:28:59,753 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:28:59,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:28:59,753 INFO L82 PathProgramCache]: Analyzing trace with hash 207675476, now seen corresponding path program 1 times [2020-12-22 08:28:59,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:28:59,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97272943] [2020-12-22 08:28:59,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:28:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:29:00,065 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 08:29:00,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97272943] [2020-12-22 08:29:00,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:29:00,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:29:00,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897192980] [2020-12-22 08:29:00,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:29:00,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:29:00,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:29:00,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:29:00,080 INFO L87 Difference]: Start difference. First operand 53078 states and 81831 transitions. Second operand 10 states. [2020-12-22 08:29:26,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:29:26,196 INFO L93 Difference]: Finished difference Result 414855 states and 639286 transitions. [2020-12-22 08:29:26,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-12-22 08:29:26,197 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2020-12-22 08:29:26,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:29:27,075 INFO L225 Difference]: With dead ends: 414855 [2020-12-22 08:29:27,075 INFO L226 Difference]: Without dead ends: 383071 [2020-12-22 08:29:27,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=380, Invalid=1180, Unknown=0, NotChecked=0, Total=1560 [2020-12-22 08:29:27,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383071 states. [2020-12-22 08:29:34,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383071 to 53573. [2020-12-22 08:29:34,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53573 states. [2020-12-22 08:29:34,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53573 states to 53573 states and 82476 transitions. [2020-12-22 08:29:34,440 INFO L78 Accepts]: Start accepts. Automaton has 53573 states and 82476 transitions. Word has length 84 [2020-12-22 08:29:34,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:29:34,441 INFO L481 AbstractCegarLoop]: Abstraction has 53573 states and 82476 transitions. [2020-12-22 08:29:34,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:29:34,441 INFO L276 IsEmpty]: Start isEmpty. Operand 53573 states and 82476 transitions. [2020-12-22 08:29:34,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 08:29:34,452 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:29:34,453 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] [2020-12-22 08:29:34,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:29:34,453 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:29:34,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:29:34,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1543265332, now seen corresponding path program 1 times [2020-12-22 08:29:34,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:29:34,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136341138] [2020-12-22 08:29:34,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:29:34,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:29:34,679 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 08:29:34,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136341138] [2020-12-22 08:29:34,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:29:34,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:29:34,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419204037] [2020-12-22 08:29:34,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:29:34,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:29:34,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:29:34,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:29:34,682 INFO L87 Difference]: Start difference. First operand 53573 states and 82476 transitions. Second operand 10 states. [2020-12-22 08:29:51,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:29:51,105 INFO L93 Difference]: Finished difference Result 178775 states and 271878 transitions. [2020-12-22 08:29:51,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-22 08:29:51,105 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2020-12-22 08:29:51,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:29:51,617 INFO L225 Difference]: With dead ends: 178775 [2020-12-22 08:29:51,617 INFO L226 Difference]: Without dead ends: 160341 [2020-12-22 08:29:51,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=247, Invalid=683, Unknown=0, NotChecked=0, Total=930 [2020-12-22 08:29:51,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160341 states. [2020-12-22 08:29:57,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160341 to 54587. [2020-12-22 08:29:57,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54587 states. [2020-12-22 08:29:57,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54587 states to 54587 states and 83920 transitions. [2020-12-22 08:29:57,779 INFO L78 Accepts]: Start accepts. Automaton has 54587 states and 83920 transitions. Word has length 84 [2020-12-22 08:29:57,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:29:57,779 INFO L481 AbstractCegarLoop]: Abstraction has 54587 states and 83920 transitions. [2020-12-22 08:29:57,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:29:57,779 INFO L276 IsEmpty]: Start isEmpty. Operand 54587 states and 83920 transitions. [2020-12-22 08:29:57,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 08:29:57,798 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:29:57,798 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] [2020-12-22 08:29:57,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:29:57,799 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:29:57,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:29:57,800 INFO L82 PathProgramCache]: Analyzing trace with hash 940384276, now seen corresponding path program 1 times [2020-12-22 08:29:57,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:29:57,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545746047] [2020-12-22 08:29:57,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:29:57,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:29:58,223 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 08:29:58,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545746047] [2020-12-22 08:29:58,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:29:58,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:29:58,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698292180] [2020-12-22 08:29:58,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:29:58,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:29:58,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:29:58,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:29:58,226 INFO L87 Difference]: Start difference. First operand 54587 states and 83920 transitions. Second operand 10 states. [2020-12-22 08:30:27,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:30:27,482 INFO L93 Difference]: Finished difference Result 285189 states and 436805 transitions. [2020-12-22 08:30:27,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 08:30:27,482 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2020-12-22 08:30:27,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:30:28,060 INFO L225 Difference]: With dead ends: 285189 [2020-12-22 08:30:28,060 INFO L226 Difference]: Without dead ends: 278513 [2020-12-22 08:30:28,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=236, Invalid=694, Unknown=0, NotChecked=0, Total=930 [2020-12-22 08:30:28,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278513 states. [2020-12-22 08:30:35,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278513 to 54373. [2020-12-22 08:30:35,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54373 states. [2020-12-22 08:30:35,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54373 states to 54373 states and 83600 transitions. [2020-12-22 08:30:35,876 INFO L78 Accepts]: Start accepts. Automaton has 54373 states and 83600 transitions. Word has length 84 [2020-12-22 08:30:35,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:30:35,876 INFO L481 AbstractCegarLoop]: Abstraction has 54373 states and 83600 transitions. [2020-12-22 08:30:35,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:30:35,876 INFO L276 IsEmpty]: Start isEmpty. Operand 54373 states and 83600 transitions. [2020-12-22 08:30:36,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 08:30:36,064 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:30:36,064 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] [2020-12-22 08:30:36,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:30:36,064 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:30:36,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:30:36,066 INFO L82 PathProgramCache]: Analyzing trace with hash -43340684, now seen corresponding path program 1 times [2020-12-22 08:30:36,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:30:36,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818896049] [2020-12-22 08:30:36,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:30:36,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:30:36,315 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 08:30:36,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818896049] [2020-12-22 08:30:36,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:30:36,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:30:36,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637203068] [2020-12-22 08:30:36,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:30:36,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:30:36,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:30:36,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:30:36,318 INFO L87 Difference]: Start difference. First operand 54373 states and 83600 transitions. Second operand 10 states. [2020-12-22 08:31:04,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:04,663 INFO L93 Difference]: Finished difference Result 266609 states and 406281 transitions. [2020-12-22 08:31:04,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 08:31:04,664 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2020-12-22 08:31:04,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:05,086 INFO L225 Difference]: With dead ends: 266609 [2020-12-22 08:31:05,086 INFO L226 Difference]: Without dead ends: 225677 [2020-12-22 08:31:05,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=219, Invalid=593, Unknown=0, NotChecked=0, Total=812 [2020-12-22 08:31:05,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225677 states. [2020-12-22 08:31:13,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225677 to 54855. [2020-12-22 08:31:13,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54855 states. [2020-12-22 08:31:14,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54855 states to 54855 states and 84217 transitions. [2020-12-22 08:31:14,049 INFO L78 Accepts]: Start accepts. Automaton has 54855 states and 84217 transitions. Word has length 84 [2020-12-22 08:31:14,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:14,049 INFO L481 AbstractCegarLoop]: Abstraction has 54855 states and 84217 transitions. [2020-12-22 08:31:14,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:31:14,049 INFO L276 IsEmpty]: Start isEmpty. Operand 54855 states and 84217 transitions. [2020-12-22 08:31:14,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 08:31:14,060 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:14,060 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] [2020-12-22 08:31:14,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:31:14,060 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:14,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:14,061 INFO L82 PathProgramCache]: Analyzing trace with hash 558481556, now seen corresponding path program 1 times [2020-12-22 08:31:14,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:14,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884308791] [2020-12-22 08:31:14,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:14,277 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 08:31:14,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884308791] [2020-12-22 08:31:14,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:14,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:31:14,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037932355] [2020-12-22 08:31:14,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:31:14,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:14,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:31:14,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:31:14,280 INFO L87 Difference]: Start difference. First operand 54855 states and 84217 transitions. Second operand 10 states. [2020-12-22 08:32:01,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:01,629 INFO L93 Difference]: Finished difference Result 364040 states and 559487 transitions. [2020-12-22 08:32:01,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-22 08:32:01,629 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2020-12-22 08:32:01,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:02,232 INFO L225 Difference]: With dead ends: 364040 [2020-12-22 08:32:02,233 INFO L226 Difference]: Without dead ends: 311250 [2020-12-22 08:32:02,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=391, Invalid=1249, Unknown=0, NotChecked=0, Total=1640 [2020-12-22 08:32:02,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311250 states. [2020-12-22 08:32:12,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311250 to 55235. [2020-12-22 08:32:12,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55235 states. [2020-12-22 08:32:13,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55235 states to 55235 states and 84649 transitions. [2020-12-22 08:32:13,010 INFO L78 Accepts]: Start accepts. Automaton has 55235 states and 84649 transitions. Word has length 84 [2020-12-22 08:32:13,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:13,010 INFO L481 AbstractCegarLoop]: Abstraction has 55235 states and 84649 transitions. [2020-12-22 08:32:13,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:32:13,011 INFO L276 IsEmpty]: Start isEmpty. Operand 55235 states and 84649 transitions. [2020-12-22 08:32:13,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 08:32:13,022 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:13,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:32:13,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:32:13,022 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:13,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:13,023 INFO L82 PathProgramCache]: Analyzing trace with hash -809169967, now seen corresponding path program 1 times [2020-12-22 08:32:13,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:13,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850402753] [2020-12-22 08:32:13,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:13,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:13,084 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 08:32:13,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850402753] [2020-12-22 08:32:13,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:13,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:32:13,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545151647] [2020-12-22 08:32:13,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:32:13,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:13,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:32:13,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:32:13,087 INFO L87 Difference]: Start difference. First operand 55235 states and 84649 transitions. Second operand 3 states. [2020-12-22 08:32:23,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:23,626 INFO L93 Difference]: Finished difference Result 89469 states and 137313 transitions. [2020-12-22 08:32:23,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:32:23,627 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-12-22 08:32:23,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:23,704 INFO L225 Difference]: With dead ends: 89469 [2020-12-22 08:32:23,704 INFO L226 Difference]: Without dead ends: 64997 [2020-12-22 08:32:23,725 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 08:32:23,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64997 states.