/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/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 07:44:36,131 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 07:44:36,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 07:44:36,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 07:44:36,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 07:44:36,230 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 07:44:36,232 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 07:44:36,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 07:44:36,235 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 07:44:36,238 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 07:44:36,246 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 07:44:36,254 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 07:44:36,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 07:44:36,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 07:44:36,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 07:44:36,263 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 07:44:36,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 07:44:36,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 07:44:36,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 07:44:36,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 07:44:36,306 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 07:44:36,361 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 07:44:36,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 07:44:36,366 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 07:44:36,366 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 07:44:36,366 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 07:44:36,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 07:44:36,367 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 07:44:36,367 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 07:44:36,367 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 07:44:36,368 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 07:44:36,369 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 07:44:36,370 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 07:44:36,370 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 07:44:36,370 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 07:44:36,371 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 07:44:36,371 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 07:44:36,371 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 07:44:36,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:44:36,372 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 07:44:36,372 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 07:44:36,373 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 07:44:36,373 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 07:44:36,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 07:44:36,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 07:44:36,374 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 07:44:36,374 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 07:44:36,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 07:44:36,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 07:44:36,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 07:44:36,879 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 07:44:36,880 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 07:44:36,881 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c [2020-12-22 07:44:36,956 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72e476fbc/cbe414ba8a3c41199c6f027593cff101/FLAG3cc3528af [2020-12-22 07:44:37,754 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 07:44:37,755 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c [2020-12-22 07:44:37,797 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72e476fbc/cbe414ba8a3c41199c6f027593cff101/FLAG3cc3528af [2020-12-22 07:44:37,937 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72e476fbc/cbe414ba8a3c41199c6f027593cff101 [2020-12-22 07:44:37,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 07:44:37,943 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 07:44:37,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 07:44:37,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 07:44:37,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 07:44:37,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:44:37" (1/1) ... [2020-12-22 07:44:37,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@555b07dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:44:37, skipping insertion in model container [2020-12-22 07:44:37,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:44:37" (1/1) ... [2020-12-22 07:44:37,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 07:44:38,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 07:44:38,630 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/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c[55771,55784] [2020-12-22 07:44:38,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:44:38,647 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 07:44:38,799 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/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c[55771,55784] [2020-12-22 07:44:38,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:44:38,822 INFO L208 MainTranslator]: Completed translation [2020-12-22 07:44:38,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:44:38 WrapperNode [2020-12-22 07:44:38,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 07:44:38,824 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 07:44:38,824 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 07:44:38,824 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 07:44:38,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:44:38" (1/1) ... [2020-12-22 07:44:38,869 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:44:38" (1/1) ... [2020-12-22 07:44:38,975 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 07:44:38,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 07:44:38,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 07:44:38,979 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 07:44:38,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:44:38" (1/1) ... [2020-12-22 07:44:38,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:44:38" (1/1) ... [2020-12-22 07:44:39,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:44:38" (1/1) ... [2020-12-22 07:44:39,006 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:44:38" (1/1) ... [2020-12-22 07:44:39,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:44:38" (1/1) ... [2020-12-22 07:44:39,123 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:44:38" (1/1) ... [2020-12-22 07:44:39,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:44:38" (1/1) ... [2020-12-22 07:44:39,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 07:44:39,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 07:44:39,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 07:44:39,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 07:44:39,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:44:38" (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 07:44:39,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 07:44:39,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 07:44:39,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 07:44:39,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 07:44:41,551 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 07:44:41,551 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2020-12-22 07:44:41,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:44:41 BoogieIcfgContainer [2020-12-22 07:44:41,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 07:44:41,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 07:44:41,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 07:44:41,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 07:44:41,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:44:37" (1/3) ... [2020-12-22 07:44:41,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10eee90c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:44:41, skipping insertion in model container [2020-12-22 07:44:41,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:44:38" (2/3) ... [2020-12-22 07:44:41,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10eee90c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:44:41, skipping insertion in model container [2020-12-22 07:44:41,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:44:41" (3/3) ... [2020-12-22 07:44:41,566 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c [2020-12-22 07:44:41,573 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 07:44:41,579 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 07:44:41,598 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 07:44:41,631 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 07:44:41,632 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 07:44:41,632 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 07:44:41,632 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 07:44:41,632 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 07:44:41,632 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 07:44:41,632 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 07:44:41,633 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 07:44:41,662 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states. [2020-12-22 07:44:41,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-22 07:44:41,686 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:44:41,687 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:44:41,688 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:44:41,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:44:41,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1447219949, now seen corresponding path program 1 times [2020-12-22 07:44:41,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:44:41,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369222929] [2020-12-22 07:44:41,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:44:42,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:44:42,347 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 07:44:42,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369222929] [2020-12-22 07:44:42,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:44:42,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:44:42,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709007672] [2020-12-22 07:44:42,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:44:42,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:44:42,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:44:42,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:44:42,374 INFO L87 Difference]: Start difference. First operand 716 states. Second operand 5 states. [2020-12-22 07:44:42,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:44:42,586 INFO L93 Difference]: Finished difference Result 905 states and 1644 transitions. [2020-12-22 07:44:42,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:44:42,588 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-12-22 07:44:42,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:44:42,614 INFO L225 Difference]: With dead ends: 905 [2020-12-22 07:44:42,614 INFO L226 Difference]: Without dead ends: 712 [2020-12-22 07:44:42,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:44:42,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2020-12-22 07:44:42,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 712. [2020-12-22 07:44:42,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 712 states. [2020-12-22 07:44:42,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1266 transitions. [2020-12-22 07:44:42,714 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1266 transitions. Word has length 153 [2020-12-22 07:44:42,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:44:42,715 INFO L481 AbstractCegarLoop]: Abstraction has 712 states and 1266 transitions. [2020-12-22 07:44:42,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:44:42,715 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1266 transitions. [2020-12-22 07:44:42,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-12-22 07:44:42,722 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:44:42,722 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:44:42,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 07:44:42,723 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:44:42,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:44:42,724 INFO L82 PathProgramCache]: Analyzing trace with hash 225889611, now seen corresponding path program 1 times [2020-12-22 07:44:42,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:44:42,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597832111] [2020-12-22 07:44:42,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:44:42,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:44:43,104 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 07:44:43,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597832111] [2020-12-22 07:44:43,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:44:43,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:44:43,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925557916] [2020-12-22 07:44:43,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:44:43,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:44:43,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:44:43,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:44:43,111 INFO L87 Difference]: Start difference. First operand 712 states and 1266 transitions. Second operand 3 states. [2020-12-22 07:44:43,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:44:43,186 INFO L93 Difference]: Finished difference Result 1060 states and 1870 transitions. [2020-12-22 07:44:43,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:44:43,187 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 197 [2020-12-22 07:44:43,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:44:43,198 INFO L225 Difference]: With dead ends: 1060 [2020-12-22 07:44:43,198 INFO L226 Difference]: Without dead ends: 879 [2020-12-22 07:44:43,204 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 07:44:43,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2020-12-22 07:44:43,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 877. [2020-12-22 07:44:43,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2020-12-22 07:44:43,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1549 transitions. [2020-12-22 07:44:43,248 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1549 transitions. Word has length 197 [2020-12-22 07:44:43,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:44:43,250 INFO L481 AbstractCegarLoop]: Abstraction has 877 states and 1549 transitions. [2020-12-22 07:44:43,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:44:43,250 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1549 transitions. [2020-12-22 07:44:43,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-12-22 07:44:43,260 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:44:43,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:44:43,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 07:44:43,262 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:44:43,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:44:43,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1437816141, now seen corresponding path program 1 times [2020-12-22 07:44:43,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:44:43,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654648906] [2020-12-22 07:44:43,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:44:43,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:44:43,529 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 07:44:43,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654648906] [2020-12-22 07:44:43,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:44:43,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:44:43,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779071651] [2020-12-22 07:44:43,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:44:43,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:44:43,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:44:43,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:44:43,533 INFO L87 Difference]: Start difference. First operand 877 states and 1549 transitions. Second operand 3 states. [2020-12-22 07:44:43,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:44:43,590 INFO L93 Difference]: Finished difference Result 1545 states and 2701 transitions. [2020-12-22 07:44:43,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:44:43,590 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 201 [2020-12-22 07:44:43,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:44:43,598 INFO L225 Difference]: With dead ends: 1545 [2020-12-22 07:44:43,598 INFO L226 Difference]: Without dead ends: 1199 [2020-12-22 07:44:43,600 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 07:44:43,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2020-12-22 07:44:43,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1197. [2020-12-22 07:44:43,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2020-12-22 07:44:43,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 2100 transitions. [2020-12-22 07:44:43,637 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 2100 transitions. Word has length 201 [2020-12-22 07:44:43,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:44:43,638 INFO L481 AbstractCegarLoop]: Abstraction has 1197 states and 2100 transitions. [2020-12-22 07:44:43,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:44:43,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 2100 transitions. [2020-12-22 07:44:43,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-12-22 07:44:43,643 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:44:43,644 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:44:43,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 07:44:43,644 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:44:43,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:44:43,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1222890533, now seen corresponding path program 1 times [2020-12-22 07:44:43,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:44:43,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10808522] [2020-12-22 07:44:43,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:44:43,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:44:43,965 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 07:44:43,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10808522] [2020-12-22 07:44:43,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:44:43,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:44:43,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988557134] [2020-12-22 07:44:43,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:44:43,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:44:43,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:44:43,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:44:43,975 INFO L87 Difference]: Start difference. First operand 1197 states and 2100 transitions. Second operand 3 states. [2020-12-22 07:44:44,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:44:44,038 INFO L93 Difference]: Finished difference Result 2481 states and 4310 transitions. [2020-12-22 07:44:44,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:44:44,039 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 205 [2020-12-22 07:44:44,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:44:44,050 INFO L225 Difference]: With dead ends: 2481 [2020-12-22 07:44:44,050 INFO L226 Difference]: Without dead ends: 1815 [2020-12-22 07:44:44,052 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 07:44:44,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1815 states. [2020-12-22 07:44:44,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1815 to 1813. [2020-12-22 07:44:44,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1813 states. [2020-12-22 07:44:44,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 3156 transitions. [2020-12-22 07:44:44,104 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 3156 transitions. Word has length 205 [2020-12-22 07:44:44,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:44:44,105 INFO L481 AbstractCegarLoop]: Abstraction has 1813 states and 3156 transitions. [2020-12-22 07:44:44,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:44:44,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 3156 transitions. [2020-12-22 07:44:44,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-12-22 07:44:44,110 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:44:44,110 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:44:44,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 07:44:44,111 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:44:44,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:44:44,111 INFO L82 PathProgramCache]: Analyzing trace with hash 930042051, now seen corresponding path program 1 times [2020-12-22 07:44:44,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:44:44,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008397694] [2020-12-22 07:44:44,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:44:44,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:44:44,338 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 07:44:44,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008397694] [2020-12-22 07:44:44,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:44:44,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:44:44,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863693681] [2020-12-22 07:44:44,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:44:44,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:44:44,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:44:44,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:44:44,342 INFO L87 Difference]: Start difference. First operand 1813 states and 3156 transitions. Second operand 3 states. [2020-12-22 07:44:44,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:44:44,422 INFO L93 Difference]: Finished difference Result 4281 states and 7390 transitions. [2020-12-22 07:44:44,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:44:44,423 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 209 [2020-12-22 07:44:44,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:44:44,445 INFO L225 Difference]: With dead ends: 4281 [2020-12-22 07:44:44,445 INFO L226 Difference]: Without dead ends: 2999 [2020-12-22 07:44:44,449 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 07:44:44,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2999 states. [2020-12-22 07:44:44,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2999 to 2997. [2020-12-22 07:44:44,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2997 states. [2020-12-22 07:44:44,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2997 states to 2997 states and 5176 transitions. [2020-12-22 07:44:44,577 INFO L78 Accepts]: Start accepts. Automaton has 2997 states and 5176 transitions. Word has length 209 [2020-12-22 07:44:44,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:44:44,578 INFO L481 AbstractCegarLoop]: Abstraction has 2997 states and 5176 transitions. [2020-12-22 07:44:44,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:44:44,578 INFO L276 IsEmpty]: Start isEmpty. Operand 2997 states and 5176 transitions. [2020-12-22 07:44:44,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-12-22 07:44:44,587 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:44:44,587 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:44,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 07:44:44,588 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:44:44,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:44:44,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1514137237, now seen corresponding path program 1 times [2020-12-22 07:44:44,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:44:44,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205718568] [2020-12-22 07:44:44,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:44:44,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:44:44,879 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 07:44:44,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205718568] [2020-12-22 07:44:44,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:44:44,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:44:44,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923631298] [2020-12-22 07:44:44,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:44:44,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:44:44,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:44:44,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:44:44,882 INFO L87 Difference]: Start difference. First operand 2997 states and 5176 transitions. Second operand 3 states. [2020-12-22 07:44:44,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:44:44,983 INFO L93 Difference]: Finished difference Result 7737 states and 13274 transitions. [2020-12-22 07:44:44,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:44:44,983 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 213 [2020-12-22 07:44:44,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:44:45,015 INFO L225 Difference]: With dead ends: 7737 [2020-12-22 07:44:45,015 INFO L226 Difference]: Without dead ends: 5271 [2020-12-22 07:44:45,023 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 07:44:45,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5271 states. [2020-12-22 07:44:45,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5271 to 5269. [2020-12-22 07:44:45,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5269 states. [2020-12-22 07:44:45,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5269 states to 5269 states and 9032 transitions. [2020-12-22 07:44:45,270 INFO L78 Accepts]: Start accepts. Automaton has 5269 states and 9032 transitions. Word has length 213 [2020-12-22 07:44:45,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:44:45,271 INFO L481 AbstractCegarLoop]: Abstraction has 5269 states and 9032 transitions. [2020-12-22 07:44:45,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:44:45,271 INFO L276 IsEmpty]: Start isEmpty. Operand 5269 states and 9032 transitions. [2020-12-22 07:44:45,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-12-22 07:44:45,278 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:44:45,278 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:44:45,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 07:44:45,279 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:44:45,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:44:45,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1937278419, now seen corresponding path program 1 times [2020-12-22 07:44:45,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:44:45,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149930935] [2020-12-22 07:44:45,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:44:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:44:45,549 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 07:44:45,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149930935] [2020-12-22 07:44:45,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:44:45,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 07:44:45,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358847856] [2020-12-22 07:44:45,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:44:45,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:44:45,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:44:45,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:44:45,552 INFO L87 Difference]: Start difference. First operand 5269 states and 9032 transitions. Second operand 7 states. [2020-12-22 07:44:46,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:44:46,463 INFO L93 Difference]: Finished difference Result 29623 states and 50817 transitions. [2020-12-22 07:44:46,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:44:46,463 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 217 [2020-12-22 07:44:46,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:44:46,592 INFO L225 Difference]: With dead ends: 29623 [2020-12-22 07:44:46,592 INFO L226 Difference]: Without dead ends: 24885 [2020-12-22 07:44:46,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2020-12-22 07:44:46,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24885 states. [2020-12-22 07:44:47,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24885 to 12177. [2020-12-22 07:44:47,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12177 states. [2020-12-22 07:44:47,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12177 states to 12177 states and 20864 transitions. [2020-12-22 07:44:47,302 INFO L78 Accepts]: Start accepts. Automaton has 12177 states and 20864 transitions. Word has length 217 [2020-12-22 07:44:47,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:44:47,303 INFO L481 AbstractCegarLoop]: Abstraction has 12177 states and 20864 transitions. [2020-12-22 07:44:47,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:44:47,303 INFO L276 IsEmpty]: Start isEmpty. Operand 12177 states and 20864 transitions. [2020-12-22 07:44:47,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-12-22 07:44:47,319 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:44:47,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:44:47,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 07:44:47,320 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:44:47,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:44:47,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1954676747, now seen corresponding path program 1 times [2020-12-22 07:44:47,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:44:47,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277505035] [2020-12-22 07:44:47,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:44:47,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:44:47,610 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 07:44:47,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277505035] [2020-12-22 07:44:47,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:44:47,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:44:47,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377776662] [2020-12-22 07:44:47,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:44:47,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:44:47,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:44:47,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:44:47,613 INFO L87 Difference]: Start difference. First operand 12177 states and 20864 transitions. Second operand 4 states. [2020-12-22 07:44:48,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:44:48,225 INFO L93 Difference]: Finished difference Result 28656 states and 49101 transitions. [2020-12-22 07:44:48,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:44:48,226 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 218 [2020-12-22 07:44:48,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:44:48,271 INFO L225 Difference]: With dead ends: 28656 [2020-12-22 07:44:48,271 INFO L226 Difference]: Without dead ends: 17010 [2020-12-22 07:44:48,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:44:48,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17010 states. [2020-12-22 07:44:48,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17010 to 16975. [2020-12-22 07:44:48,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16975 states. [2020-12-22 07:44:48,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16975 states to 16975 states and 29062 transitions. [2020-12-22 07:44:48,780 INFO L78 Accepts]: Start accepts. Automaton has 16975 states and 29062 transitions. Word has length 218 [2020-12-22 07:44:48,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:44:48,781 INFO L481 AbstractCegarLoop]: Abstraction has 16975 states and 29062 transitions. [2020-12-22 07:44:48,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:44:48,781 INFO L276 IsEmpty]: Start isEmpty. Operand 16975 states and 29062 transitions. [2020-12-22 07:44:48,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-12-22 07:44:48,794 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:44:48,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:44:48,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 07:44:48,795 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:44:48,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:44:48,795 INFO L82 PathProgramCache]: Analyzing trace with hash 2017935659, now seen corresponding path program 1 times [2020-12-22 07:44:48,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:44:48,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550494320] [2020-12-22 07:44:48,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:44:48,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:44:49,081 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 07:44:49,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550494320] [2020-12-22 07:44:49,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:44:49,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:44:49,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042200905] [2020-12-22 07:44:49,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:44:49,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:44:49,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:44:49,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:44:49,096 INFO L87 Difference]: Start difference. First operand 16975 states and 29062 transitions. Second operand 3 states. [2020-12-22 07:44:49,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:44:49,518 INFO L93 Difference]: Finished difference Result 38886 states and 66673 transitions. [2020-12-22 07:44:49,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:44:49,518 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 219 [2020-12-22 07:44:49,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:44:49,676 INFO L225 Difference]: With dead ends: 38886 [2020-12-22 07:44:49,677 INFO L226 Difference]: Without dead ends: 26777 [2020-12-22 07:44:49,694 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 07:44:49,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26777 states. [2020-12-22 07:44:50,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26777 to 26775. [2020-12-22 07:44:50,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26775 states. [2020-12-22 07:44:50,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26775 states to 26775 states and 45753 transitions. [2020-12-22 07:44:50,603 INFO L78 Accepts]: Start accepts. Automaton has 26775 states and 45753 transitions. Word has length 219 [2020-12-22 07:44:50,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:44:50,603 INFO L481 AbstractCegarLoop]: Abstraction has 26775 states and 45753 transitions. [2020-12-22 07:44:50,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:44:50,604 INFO L276 IsEmpty]: Start isEmpty. Operand 26775 states and 45753 transitions. [2020-12-22 07:44:50,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-12-22 07:44:50,611 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:44:50,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:44:50,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 07:44:50,612 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:44:50,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:44:50,613 INFO L82 PathProgramCache]: Analyzing trace with hash 971795723, now seen corresponding path program 1 times [2020-12-22 07:44:50,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:44:50,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763271523] [2020-12-22 07:44:50,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:44:50,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:44:50,828 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 07:44:50,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763271523] [2020-12-22 07:44:50,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:44:50,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:44:50,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484413384] [2020-12-22 07:44:50,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:44:50,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:44:50,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:44:50,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:44:50,834 INFO L87 Difference]: Start difference. First operand 26775 states and 45753 transitions. Second operand 3 states. [2020-12-22 07:44:51,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:44:51,663 INFO L93 Difference]: Finished difference Result 51887 states and 88668 transitions. [2020-12-22 07:44:51,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:44:51,664 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 219 [2020-12-22 07:44:51,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:44:51,761 INFO L225 Difference]: With dead ends: 51887 [2020-12-22 07:44:51,761 INFO L226 Difference]: Without dead ends: 37901 [2020-12-22 07:44:51,790 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 07:44:51,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37901 states. [2020-12-22 07:44:52,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37901 to 37899. [2020-12-22 07:44:52,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37899 states. [2020-12-22 07:44:52,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37899 states to 37899 states and 64585 transitions. [2020-12-22 07:44:52,904 INFO L78 Accepts]: Start accepts. Automaton has 37899 states and 64585 transitions. Word has length 219 [2020-12-22 07:44:52,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:44:52,905 INFO L481 AbstractCegarLoop]: Abstraction has 37899 states and 64585 transitions. [2020-12-22 07:44:52,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:44:52,905 INFO L276 IsEmpty]: Start isEmpty. Operand 37899 states and 64585 transitions. [2020-12-22 07:44:52,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-12-22 07:44:52,910 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:44:52,911 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:44:52,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 07:44:52,911 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:44:52,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:44:52,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1108641557, now seen corresponding path program 1 times [2020-12-22 07:44:52,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:44:52,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722455125] [2020-12-22 07:44:52,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:44:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:44:53,283 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 07:44:53,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722455125] [2020-12-22 07:44:53,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:44:53,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:44:53,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202753360] [2020-12-22 07:44:53,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:44:53,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:44:53,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:44:53,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:44:53,287 INFO L87 Difference]: Start difference. First operand 37899 states and 64585 transitions. Second operand 3 states. [2020-12-22 07:44:54,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:44:54,202 INFO L93 Difference]: Finished difference Result 73251 states and 124860 transitions. [2020-12-22 07:44:54,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:44:54,203 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 219 [2020-12-22 07:44:54,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:44:54,332 INFO L225 Difference]: With dead ends: 73251 [2020-12-22 07:44:54,332 INFO L226 Difference]: Without dead ends: 53425 [2020-12-22 07:44:54,365 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 07:44:54,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53425 states. [2020-12-22 07:44:55,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53425 to 53423. [2020-12-22 07:44:55,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53423 states. [2020-12-22 07:44:55,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53423 states to 53423 states and 90777 transitions. [2020-12-22 07:44:55,850 INFO L78 Accepts]: Start accepts. Automaton has 53423 states and 90777 transitions. Word has length 219 [2020-12-22 07:44:55,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:44:55,850 INFO L481 AbstractCegarLoop]: Abstraction has 53423 states and 90777 transitions. [2020-12-22 07:44:55,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:44:55,851 INFO L276 IsEmpty]: Start isEmpty. Operand 53423 states and 90777 transitions. [2020-12-22 07:44:55,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-12-22 07:44:55,855 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:44:55,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:44:55,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 07:44:55,856 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:44:55,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:44:55,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1814324427, now seen corresponding path program 1 times [2020-12-22 07:44:55,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:44:55,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686175785] [2020-12-22 07:44:55,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:44:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:44:56,198 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 07:44:56,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686175785] [2020-12-22 07:44:56,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:44:56,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:44:56,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110693756] [2020-12-22 07:44:56,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:44:56,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:44:56,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:44:56,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:44:56,201 INFO L87 Difference]: Start difference. First operand 53423 states and 90777 transitions. Second operand 3 states. [2020-12-22 07:44:57,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:44:57,513 INFO L93 Difference]: Finished difference Result 102983 states and 175052 transitions. [2020-12-22 07:44:57,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:44:57,514 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 219 [2020-12-22 07:44:57,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:44:57,654 INFO L225 Difference]: With dead ends: 102983 [2020-12-22 07:44:57,654 INFO L226 Difference]: Without dead ends: 74973 [2020-12-22 07:44:57,678 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 07:44:57,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74973 states. [2020-12-22 07:44:59,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74973 to 74971. [2020-12-22 07:44:59,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74971 states. [2020-12-22 07:44:59,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74971 states to 74971 states and 126989 transitions. [2020-12-22 07:44:59,817 INFO L78 Accepts]: Start accepts. Automaton has 74971 states and 126989 transitions. Word has length 219 [2020-12-22 07:44:59,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:44:59,818 INFO L481 AbstractCegarLoop]: Abstraction has 74971 states and 126989 transitions. [2020-12-22 07:44:59,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:44:59,818 INFO L276 IsEmpty]: Start isEmpty. Operand 74971 states and 126989 transitions. [2020-12-22 07:44:59,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-12-22 07:44:59,822 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:44:59,823 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:44:59,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 07:44:59,823 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:44:59,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:44:59,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1938345813, now seen corresponding path program 1 times [2020-12-22 07:44:59,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:44:59,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641355508] [2020-12-22 07:44:59,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:44:59,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:44:59,988 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 07:44:59,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641355508] [2020-12-22 07:44:59,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:44:59,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:44:59,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490606028] [2020-12-22 07:44:59,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:44:59,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:44:59,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:44:59,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:44:59,991 INFO L87 Difference]: Start difference. First operand 74971 states and 126989 transitions. Second operand 3 states. [2020-12-22 07:45:01,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:01,534 INFO L93 Difference]: Finished difference Result 144115 states and 244204 transitions. [2020-12-22 07:45:01,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:45:01,535 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 219 [2020-12-22 07:45:01,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:45:01,777 INFO L225 Difference]: With dead ends: 144115 [2020-12-22 07:45:01,777 INFO L226 Difference]: Without dead ends: 104693 [2020-12-22 07:45:01,872 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 07:45:01,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104693 states. [2020-12-22 07:45:04,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104693 to 104691. [2020-12-22 07:45:04,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104691 states. [2020-12-22 07:45:04,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104691 states to 104691 states and 176701 transitions. [2020-12-22 07:45:04,639 INFO L78 Accepts]: Start accepts. Automaton has 104691 states and 176701 transitions. Word has length 219 [2020-12-22 07:45:04,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:45:04,639 INFO L481 AbstractCegarLoop]: Abstraction has 104691 states and 176701 transitions. [2020-12-22 07:45:04,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:45:04,640 INFO L276 IsEmpty]: Start isEmpty. Operand 104691 states and 176701 transitions. [2020-12-22 07:45:04,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-12-22 07:45:04,644 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:04,644 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:45:04,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 07:45:04,645 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:04,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:04,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1631938038, now seen corresponding path program 1 times [2020-12-22 07:45:04,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:04,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126405122] [2020-12-22 07:45:04,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:04,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:04,888 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 07:45:04,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126405122] [2020-12-22 07:45:04,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:04,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:45:04,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644745109] [2020-12-22 07:45:04,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:45:04,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:04,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:45:04,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:45:04,893 INFO L87 Difference]: Start difference. First operand 104691 states and 176701 transitions. Second operand 4 states. [2020-12-22 07:45:08,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:08,510 INFO L93 Difference]: Finished difference Result 345891 states and 584153 transitions. [2020-12-22 07:45:08,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:45:08,511 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 219 [2020-12-22 07:45:08,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:45:08,965 INFO L225 Difference]: With dead ends: 345891 [2020-12-22 07:45:08,966 INFO L226 Difference]: Without dead ends: 241813 [2020-12-22 07:45:09,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:45:09,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241813 states. [2020-12-22 07:45:13,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241813 to 172370. [2020-12-22 07:45:13,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172370 states. [2020-12-22 07:45:13,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172370 states to 172370 states and 290080 transitions. [2020-12-22 07:45:13,771 INFO L78 Accepts]: Start accepts. Automaton has 172370 states and 290080 transitions. Word has length 219 [2020-12-22 07:45:13,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:45:13,772 INFO L481 AbstractCegarLoop]: Abstraction has 172370 states and 290080 transitions. [2020-12-22 07:45:13,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:45:13,772 INFO L276 IsEmpty]: Start isEmpty. Operand 172370 states and 290080 transitions. [2020-12-22 07:45:13,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-12-22 07:45:13,776 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:13,777 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:45:13,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 07:45:13,778 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:13,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:13,778 INFO L82 PathProgramCache]: Analyzing trace with hash -978842334, now seen corresponding path program 1 times [2020-12-22 07:45:13,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:13,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994384899] [2020-12-22 07:45:13,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:13,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:13,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:45:13,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994384899] [2020-12-22 07:45:13,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:13,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:45:13,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264517560] [2020-12-22 07:45:13,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:45:13,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:13,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:45:13,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:45:13,982 INFO L87 Difference]: Start difference. First operand 172370 states and 290080 transitions. Second operand 4 states. [2020-12-22 07:45:19,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:19,770 INFO L93 Difference]: Finished difference Result 569939 states and 959773 transitions. [2020-12-22 07:45:19,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:45:19,771 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 220 [2020-12-22 07:45:19,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:45:20,600 INFO L225 Difference]: With dead ends: 569939 [2020-12-22 07:45:20,600 INFO L226 Difference]: Without dead ends: 398182 [2020-12-22 07:45:20,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:45:21,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398182 states. [2020-12-22 07:45:27,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398182 to 283101. [2020-12-22 07:45:27,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283101 states. [2020-12-22 07:45:28,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283101 states to 283101 states and 475043 transitions. [2020-12-22 07:45:28,748 INFO L78 Accepts]: Start accepts. Automaton has 283101 states and 475043 transitions. Word has length 220 [2020-12-22 07:45:28,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:45:28,749 INFO L481 AbstractCegarLoop]: Abstraction has 283101 states and 475043 transitions. [2020-12-22 07:45:28,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:45:28,749 INFO L276 IsEmpty]: Start isEmpty. Operand 283101 states and 475043 transitions. [2020-12-22 07:45:28,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-12-22 07:45:28,751 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:28,751 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:45:28,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 07:45:28,752 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:28,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:28,766 INFO L82 PathProgramCache]: Analyzing trace with hash -2038707647, now seen corresponding path program 1 times [2020-12-22 07:45:28,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:28,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241415210] [2020-12-22 07:45:28,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:28,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:28,952 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 07:45:28,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241415210] [2020-12-22 07:45:28,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:28,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:45:28,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750384380] [2020-12-22 07:45:28,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:45:28,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:28,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:45:28,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:45:28,957 INFO L87 Difference]: Start difference. First operand 283101 states and 475043 transitions. Second operand 4 states. [2020-12-22 07:45:39,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:39,178 INFO L93 Difference]: Finished difference Result 935595 states and 1571009 transitions. [2020-12-22 07:45:39,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:45:39,178 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 221 [2020-12-22 07:45:39,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:45:40,607 INFO L225 Difference]: With dead ends: 935595 [2020-12-22 07:45:40,607 INFO L226 Difference]: Without dead ends: 653107 [2020-12-22 07:45:41,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:45:41,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653107 states. [2020-12-22 07:45:56,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653107 to 462408. [2020-12-22 07:45:56,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 462408 states. [2020-12-22 07:45:58,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462408 states to 462408 states and 773690 transitions. [2020-12-22 07:45:58,203 INFO L78 Accepts]: Start accepts. Automaton has 462408 states and 773690 transitions. Word has length 221 [2020-12-22 07:45:58,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:45:58,207 INFO L481 AbstractCegarLoop]: Abstraction has 462408 states and 773690 transitions. [2020-12-22 07:45:58,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:45:58,208 INFO L276 IsEmpty]: Start isEmpty. Operand 462408 states and 773690 transitions. [2020-12-22 07:45:58,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-12-22 07:45:58,209 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:58,210 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:45:58,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 07:45:58,210 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:58,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:58,211 INFO L82 PathProgramCache]: Analyzing trace with hash -365789639, now seen corresponding path program 1 times [2020-12-22 07:45:58,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:58,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356379552] [2020-12-22 07:45:58,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:59,161 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 07:45:59,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356379552] [2020-12-22 07:45:59,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:59,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:45:59,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126625779] [2020-12-22 07:45:59,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:45:59,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:59,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:45:59,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:45:59,164 INFO L87 Difference]: Start difference. First operand 462408 states and 773690 transitions. Second operand 4 states. [2020-12-22 07:46:16,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:46:16,891 INFO L93 Difference]: Finished difference Result 1496599 states and 2506093 transitions. [2020-12-22 07:46:16,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:46:16,892 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 222 [2020-12-22 07:46:16,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:46:19,728 INFO L225 Difference]: With dead ends: 1496599 [2020-12-22 07:46:19,729 INFO L226 Difference]: Without dead ends: 1034804 [2020-12-22 07:46:20,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:46:21,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034804 states. [2020-12-22 07:46:46,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034804 to 747239. [2020-12-22 07:46:46,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747239 states. [2020-12-22 07:46:50,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747239 states to 747239 states and 1246761 transitions. [2020-12-22 07:46:50,220 INFO L78 Accepts]: Start accepts. Automaton has 747239 states and 1246761 transitions. Word has length 222 [2020-12-22 07:46:50,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:46:50,220 INFO L481 AbstractCegarLoop]: Abstraction has 747239 states and 1246761 transitions. [2020-12-22 07:46:50,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:46:50,221 INFO L276 IsEmpty]: Start isEmpty. Operand 747239 states and 1246761 transitions. [2020-12-22 07:46:50,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-12-22 07:46:50,237 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:46:50,238 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:46:50,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 07:46:50,238 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:46:50,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:46:50,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1641264367, now seen corresponding path program 1 times [2020-12-22 07:46:50,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:46:50,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671610475] [2020-12-22 07:46:50,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:46:50,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:46:51,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:46:51,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671610475] [2020-12-22 07:46:51,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:46:51,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 07:46:51,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482922579] [2020-12-22 07:46:51,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:46:51,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:46:51,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:46:51,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:46:51,392 INFO L87 Difference]: Start difference. First operand 747239 states and 1246761 transitions. Second operand 7 states. [2020-12-22 07:47:12,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:47:12,750 INFO L93 Difference]: Finished difference Result 1493869 states and 2492443 transitions. [2020-12-22 07:47:12,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 07:47:12,757 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 224 [2020-12-22 07:47:12,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:47:14,754 INFO L225 Difference]: With dead ends: 1493869 [2020-12-22 07:47:14,754 INFO L226 Difference]: Without dead ends: 747243 [2020-12-22 07:47:15,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:47:15,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747243 states. [2020-12-22 07:47:34,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747243 to 747239. [2020-12-22 07:47:34,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747239 states.