/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.5.3.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 07:45:00,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 07:45:00,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 07:45:00,550 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 07:45:00,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 07:45:00,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 07:45:00,592 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 07:45:00,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 07:45:00,595 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 07:45:00,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 07:45:00,606 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 07:45:00,629 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 07:45:00,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 07:45:00,649 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 07:45:00,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 07:45:00,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 07:45:00,663 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 07:45:00,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 07:45:00,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 07:45:00,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 07:45:00,679 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 07:45:00,735 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 07:45:00,735 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 07:45:00,741 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 07:45:00,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 07:45:00,741 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 07:45:00,742 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 07:45:00,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 07:45:00,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 07:45:00,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 07:45:00,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 07:45:00,744 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 07:45:00,744 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 07:45:00,745 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 07:45:00,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 07:45:00,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 07:45:00,745 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 07:45:00,745 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 07:45:00,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:45:00,746 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 07:45:00,746 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 07:45:00,746 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 07:45:00,747 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 07:45:00,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 07:45:00,747 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 07:45:00,747 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 07:45:00,747 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 07:45:01,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 07:45:01,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 07:45:01,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 07:45:01,263 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 07:45:01,264 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 07:45:01,265 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.3.ufo.UNBOUNDED.pals.c [2020-12-22 07:45:01,361 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b40e5d03/69171162f2054556925e863dc67866c1/FLAG8d89cb27f [2020-12-22 07:45:02,241 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 07:45:02,242 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.3.ufo.UNBOUNDED.pals.c [2020-12-22 07:45:02,272 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b40e5d03/69171162f2054556925e863dc67866c1/FLAG8d89cb27f [2020-12-22 07:45:02,362 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b40e5d03/69171162f2054556925e863dc67866c1 [2020-12-22 07:45:02,365 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 07:45:02,367 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 07:45:02,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 07:45:02,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 07:45:02,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 07:45:02,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:45:02" (1/1) ... [2020-12-22 07:45:02,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d52b079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:45:02, skipping insertion in model container [2020-12-22 07:45:02,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:45:02" (1/1) ... [2020-12-22 07:45:02,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 07:45:02,453 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 07:45:02,960 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.5.3.ufo.UNBOUNDED.pals.c[65679,65692] [2020-12-22 07:45:02,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:45:02,980 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 07:45:03,232 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.5.3.ufo.UNBOUNDED.pals.c[65679,65692] [2020-12-22 07:45:03,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:45:03,265 INFO L208 MainTranslator]: Completed translation [2020-12-22 07:45:03,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:45:03 WrapperNode [2020-12-22 07:45:03,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 07:45:03,268 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 07:45:03,268 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 07:45:03,268 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 07:45:03,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:45:03" (1/1) ... [2020-12-22 07:45:03,306 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:45:03" (1/1) ... [2020-12-22 07:45:03,416 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 07:45:03,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 07:45:03,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 07:45:03,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 07:45:03,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:45:03" (1/1) ... [2020-12-22 07:45:03,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:45:03" (1/1) ... [2020-12-22 07:45:03,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:45:03" (1/1) ... [2020-12-22 07:45:03,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:45:03" (1/1) ... [2020-12-22 07:45:03,481 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:45:03" (1/1) ... [2020-12-22 07:45:03,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:45:03" (1/1) ... [2020-12-22 07:45:03,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:45:03" (1/1) ... [2020-12-22 07:45:03,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 07:45:03,548 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 07:45:03,549 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 07:45:03,549 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 07:45:03,550 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:45:03" (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 07:45:03,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 07:45:03,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 07:45:03,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 07:45:03,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 07:45:06,358 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 07:45:06,358 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2020-12-22 07:45:06,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:45:06 BoogieIcfgContainer [2020-12-22 07:45:06,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 07:45:06,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 07:45:06,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 07:45:06,369 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 07:45:06,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:45:02" (1/3) ... [2020-12-22 07:45:06,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a75389c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:45:06, skipping insertion in model container [2020-12-22 07:45:06,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:45:03" (2/3) ... [2020-12-22 07:45:06,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a75389c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:45:06, skipping insertion in model container [2020-12-22 07:45:06,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:45:06" (3/3) ... [2020-12-22 07:45:06,373 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.3.ufo.UNBOUNDED.pals.c [2020-12-22 07:45:06,381 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 07:45:06,388 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 07:45:06,411 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 07:45:06,449 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 07:45:06,450 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 07:45:06,450 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 07:45:06,450 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 07:45:06,450 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 07:45:06,451 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 07:45:06,451 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 07:45:06,451 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 07:45:06,484 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states. [2020-12-22 07:45:06,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-22 07:45:06,512 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:06,513 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 07:45:06,514 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:06,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:06,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1610308336, now seen corresponding path program 1 times [2020-12-22 07:45:06,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:06,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631356010] [2020-12-22 07:45:06,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:06,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:07,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:45:07,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631356010] [2020-12-22 07:45:07,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:07,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 07:45:07,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256716336] [2020-12-22 07:45:07,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 07:45:07,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:07,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 07:45:07,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 07:45:07,355 INFO L87 Difference]: Start difference. First operand 745 states. Second operand 2 states. [2020-12-22 07:45:07,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:07,455 INFO L93 Difference]: Finished difference Result 936 states and 1705 transitions. [2020-12-22 07:45:07,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 07:45:07,457 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 153 [2020-12-22 07:45:07,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:45:07,513 INFO L225 Difference]: With dead ends: 936 [2020-12-22 07:45:07,514 INFO L226 Difference]: Without dead ends: 741 [2020-12-22 07:45:07,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 07:45:07,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-12-22 07:45:07,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 741. [2020-12-22 07:45:07,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 741 states. [2020-12-22 07:45:07,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1365 transitions. [2020-12-22 07:45:07,658 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1365 transitions. Word has length 153 [2020-12-22 07:45:07,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:45:07,661 INFO L481 AbstractCegarLoop]: Abstraction has 741 states and 1365 transitions. [2020-12-22 07:45:07,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 07:45:07,661 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1365 transitions. [2020-12-22 07:45:07,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-22 07:45:07,677 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:07,678 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 07:45:07,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 07:45:07,678 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:07,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:07,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1100835246, now seen corresponding path program 1 times [2020-12-22 07:45:07,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:07,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946436395] [2020-12-22 07:45:07,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:07,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:08,020 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 07:45:08,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946436395] [2020-12-22 07:45:08,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:08,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:45:08,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769239477] [2020-12-22 07:45:08,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:45:08,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:08,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:45:08,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:45:08,025 INFO L87 Difference]: Start difference. First operand 741 states and 1365 transitions. Second operand 5 states. [2020-12-22 07:45:08,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:08,198 INFO L93 Difference]: Finished difference Result 935 states and 1698 transitions. [2020-12-22 07:45:08,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:45:08,198 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-12-22 07:45:08,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:45:08,205 INFO L225 Difference]: With dead ends: 935 [2020-12-22 07:45:08,205 INFO L226 Difference]: Without dead ends: 741 [2020-12-22 07:45:08,207 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 07:45:08,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-12-22 07:45:08,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 741. [2020-12-22 07:45:08,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 741 states. [2020-12-22 07:45:08,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1300 transitions. [2020-12-22 07:45:08,231 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1300 transitions. Word has length 153 [2020-12-22 07:45:08,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:45:08,232 INFO L481 AbstractCegarLoop]: Abstraction has 741 states and 1300 transitions. [2020-12-22 07:45:08,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:45:08,232 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1300 transitions. [2020-12-22 07:45:08,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-12-22 07:45:08,236 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:08,236 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 07:45:08,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 07:45:08,237 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:08,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:08,237 INFO L82 PathProgramCache]: Analyzing trace with hash -698376180, now seen corresponding path program 1 times [2020-12-22 07:45:08,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:08,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121492601] [2020-12-22 07:45:08,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:08,591 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 07:45:08,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121492601] [2020-12-22 07:45:08,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:08,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:45:08,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995433952] [2020-12-22 07:45:08,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:45:08,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:08,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:45:08,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:45:08,606 INFO L87 Difference]: Start difference. First operand 741 states and 1300 transitions. Second operand 3 states. [2020-12-22 07:45:08,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:08,730 INFO L93 Difference]: Finished difference Result 1107 states and 1932 transitions. [2020-12-22 07:45:08,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:45:08,731 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2020-12-22 07:45:08,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:45:08,738 INFO L225 Difference]: With dead ends: 1107 [2020-12-22 07:45:08,738 INFO L226 Difference]: Without dead ends: 917 [2020-12-22 07:45:08,740 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 07:45:08,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2020-12-22 07:45:08,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 914. [2020-12-22 07:45:08,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 914 states. [2020-12-22 07:45:08,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1595 transitions. [2020-12-22 07:45:08,779 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1595 transitions. Word has length 217 [2020-12-22 07:45:08,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:45:08,787 INFO L481 AbstractCegarLoop]: Abstraction has 914 states and 1595 transitions. [2020-12-22 07:45:08,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:45:08,787 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1595 transitions. [2020-12-22 07:45:08,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-12-22 07:45:08,792 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:08,792 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 07:45:08,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 07:45:08,792 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:08,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:08,793 INFO L82 PathProgramCache]: Analyzing trace with hash -128120140, now seen corresponding path program 1 times [2020-12-22 07:45:08,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:08,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648023204] [2020-12-22 07:45:08,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:08,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:09,091 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 07:45:09,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648023204] [2020-12-22 07:45:09,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:09,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:45:09,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25179005] [2020-12-22 07:45:09,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:45:09,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:09,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:45:09,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:45:09,098 INFO L87 Difference]: Start difference. First operand 914 states and 1595 transitions. Second operand 3 states. [2020-12-22 07:45:09,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:09,184 INFO L93 Difference]: Finished difference Result 1616 states and 2799 transitions. [2020-12-22 07:45:09,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:45:09,185 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 221 [2020-12-22 07:45:09,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:45:09,196 INFO L225 Difference]: With dead ends: 1616 [2020-12-22 07:45:09,197 INFO L226 Difference]: Without dead ends: 1253 [2020-12-22 07:45:09,200 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 07:45:09,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2020-12-22 07:45:09,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 1249. [2020-12-22 07:45:09,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1249 states. [2020-12-22 07:45:09,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 2168 transitions. [2020-12-22 07:45:09,272 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 2168 transitions. Word has length 221 [2020-12-22 07:45:09,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:45:09,273 INFO L481 AbstractCegarLoop]: Abstraction has 1249 states and 2168 transitions. [2020-12-22 07:45:09,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:45:09,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 2168 transitions. [2020-12-22 07:45:09,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-12-22 07:45:09,283 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:09,284 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, 1] [2020-12-22 07:45:09,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 07:45:09,285 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:09,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:09,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1683241124, now seen corresponding path program 1 times [2020-12-22 07:45:09,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:09,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857201341] [2020-12-22 07:45:09,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:09,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:09,675 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 07:45:09,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857201341] [2020-12-22 07:45:09,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:09,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:45:09,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266447122] [2020-12-22 07:45:09,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:45:09,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:09,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:45:09,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:45:09,680 INFO L87 Difference]: Start difference. First operand 1249 states and 2168 transitions. Second operand 3 states. [2020-12-22 07:45:09,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:09,781 INFO L93 Difference]: Finished difference Result 2597 states and 4474 transitions. [2020-12-22 07:45:09,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:45:09,785 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 225 [2020-12-22 07:45:09,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:45:09,796 INFO L225 Difference]: With dead ends: 2597 [2020-12-22 07:45:09,796 INFO L226 Difference]: Without dead ends: 1899 [2020-12-22 07:45:09,798 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 07:45:09,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2020-12-22 07:45:09,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1893. [2020-12-22 07:45:09,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1893 states. [2020-12-22 07:45:09,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 3264 transitions. [2020-12-22 07:45:09,865 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 3264 transitions. Word has length 225 [2020-12-22 07:45:09,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:45:09,866 INFO L481 AbstractCegarLoop]: Abstraction has 1893 states and 3264 transitions. [2020-12-22 07:45:09,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:45:09,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 3264 transitions. [2020-12-22 07:45:09,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-12-22 07:45:09,872 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:09,873 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, 1, 1, 1, 1, 1] [2020-12-22 07:45:09,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 07:45:09,873 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:09,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:09,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1320539652, now seen corresponding path program 1 times [2020-12-22 07:45:09,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:09,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697071495] [2020-12-22 07:45:09,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:09,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:10,153 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 07:45:10,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697071495] [2020-12-22 07:45:10,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:10,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:45:10,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554456275] [2020-12-22 07:45:10,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:45:10,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:10,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:45:10,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:45:10,158 INFO L87 Difference]: Start difference. First operand 1893 states and 3264 transitions. Second operand 3 states. [2020-12-22 07:45:10,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:10,247 INFO L93 Difference]: Finished difference Result 4481 states and 7674 transitions. [2020-12-22 07:45:10,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:45:10,247 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 229 [2020-12-22 07:45:10,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:45:10,265 INFO L225 Difference]: With dead ends: 4481 [2020-12-22 07:45:10,266 INFO L226 Difference]: Without dead ends: 3139 [2020-12-22 07:45:10,269 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 07:45:10,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2020-12-22 07:45:10,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 3129. [2020-12-22 07:45:10,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3129 states. [2020-12-22 07:45:10,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3129 states to 3129 states and 5356 transitions. [2020-12-22 07:45:10,397 INFO L78 Accepts]: Start accepts. Automaton has 3129 states and 5356 transitions. Word has length 229 [2020-12-22 07:45:10,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:45:10,397 INFO L481 AbstractCegarLoop]: Abstraction has 3129 states and 5356 transitions. [2020-12-22 07:45:10,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:45:10,398 INFO L276 IsEmpty]: Start isEmpty. Operand 3129 states and 5356 transitions. [2020-12-22 07:45:10,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-12-22 07:45:10,403 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:10,404 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:45:10,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 07:45:10,404 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:10,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:10,410 INFO L82 PathProgramCache]: Analyzing trace with hash -2073741652, now seen corresponding path program 1 times [2020-12-22 07:45:10,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:10,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107023008] [2020-12-22 07:45:10,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:10,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:45:10,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107023008] [2020-12-22 07:45:10,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:10,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:45:10,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984453930] [2020-12-22 07:45:10,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:45:10,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:10,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:45:10,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:45:10,667 INFO L87 Difference]: Start difference. First operand 3129 states and 5356 transitions. Second operand 3 states. [2020-12-22 07:45:10,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:10,828 INFO L93 Difference]: Finished difference Result 8093 states and 13774 transitions. [2020-12-22 07:45:10,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:45:10,829 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 233 [2020-12-22 07:45:10,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:45:10,865 INFO L225 Difference]: With dead ends: 8093 [2020-12-22 07:45:10,865 INFO L226 Difference]: Without dead ends: 5515 [2020-12-22 07:45:10,871 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 07:45:10,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5515 states. [2020-12-22 07:45:11,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5515 to 5497. [2020-12-22 07:45:11,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5497 states. [2020-12-22 07:45:11,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5497 states to 5497 states and 9340 transitions. [2020-12-22 07:45:11,140 INFO L78 Accepts]: Start accepts. Automaton has 5497 states and 9340 transitions. Word has length 233 [2020-12-22 07:45:11,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:45:11,140 INFO L481 AbstractCegarLoop]: Abstraction has 5497 states and 9340 transitions. [2020-12-22 07:45:11,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:45:11,141 INFO L276 IsEmpty]: Start isEmpty. Operand 5497 states and 9340 transitions. [2020-12-22 07:45:11,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-12-22 07:45:11,148 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:11,149 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:45:11,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 07:45:11,149 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:11,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:11,150 INFO L82 PathProgramCache]: Analyzing trace with hash 337897812, now seen corresponding path program 1 times [2020-12-22 07:45:11,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:11,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756009480] [2020-12-22 07:45:11,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:11,522 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 07:45:11,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756009480] [2020-12-22 07:45:11,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:11,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 07:45:11,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035253029] [2020-12-22 07:45:11,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:45:11,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:11,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:45:11,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:45:11,526 INFO L87 Difference]: Start difference. First operand 5497 states and 9340 transitions. Second operand 7 states. [2020-12-22 07:45:12,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:12,487 INFO L93 Difference]: Finished difference Result 30955 states and 52693 transitions. [2020-12-22 07:45:12,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:45:12,487 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 237 [2020-12-22 07:45:12,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:45:12,591 INFO L225 Difference]: With dead ends: 30955 [2020-12-22 07:45:12,592 INFO L226 Difference]: Without dead ends: 26009 [2020-12-22 07:45:12,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2020-12-22 07:45:12,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26009 states. [2020-12-22 07:45:13,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26009 to 12716. [2020-12-22 07:45:13,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12716 states. [2020-12-22 07:45:13,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12716 states to 12716 states and 21610 transitions. [2020-12-22 07:45:13,394 INFO L78 Accepts]: Start accepts. Automaton has 12716 states and 21610 transitions. Word has length 237 [2020-12-22 07:45:13,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:45:13,394 INFO L481 AbstractCegarLoop]: Abstraction has 12716 states and 21610 transitions. [2020-12-22 07:45:13,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:45:13,395 INFO L276 IsEmpty]: Start isEmpty. Operand 12716 states and 21610 transitions. [2020-12-22 07:45:13,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-12-22 07:45:13,407 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:13,408 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:45:13,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 07:45:13,408 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:13,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:13,409 INFO L82 PathProgramCache]: Analyzing trace with hash -381481659, now seen corresponding path program 1 times [2020-12-22 07:45:13,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:13,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824129825] [2020-12-22 07:45:13,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:13,694 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 07:45:13,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824129825] [2020-12-22 07:45:13,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:13,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:45:13,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638711901] [2020-12-22 07:45:13,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:45:13,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:13,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:45:13,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:45:13,705 INFO L87 Difference]: Start difference. First operand 12716 states and 21610 transitions. Second operand 4 states. [2020-12-22 07:45:14,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:14,183 INFO L93 Difference]: Finished difference Result 29933 states and 50887 transitions. [2020-12-22 07:45:14,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:45:14,184 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 238 [2020-12-22 07:45:14,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:45:14,236 INFO L225 Difference]: With dead ends: 29933 [2020-12-22 07:45:14,237 INFO L226 Difference]: Without dead ends: 17768 [2020-12-22 07:45:14,261 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 07:45:14,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17768 states. [2020-12-22 07:45:14,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17768 to 17733. [2020-12-22 07:45:14,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17733 states. [2020-12-22 07:45:14,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17733 states to 17733 states and 30122 transitions. [2020-12-22 07:45:14,912 INFO L78 Accepts]: Start accepts. Automaton has 17733 states and 30122 transitions. Word has length 238 [2020-12-22 07:45:14,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:45:14,918 INFO L481 AbstractCegarLoop]: Abstraction has 17733 states and 30122 transitions. [2020-12-22 07:45:14,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:45:14,918 INFO L276 IsEmpty]: Start isEmpty. Operand 17733 states and 30122 transitions. [2020-12-22 07:45:14,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-12-22 07:45:14,931 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:14,932 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:45:14,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 07:45:14,933 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:14,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:14,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1038404437, now seen corresponding path program 1 times [2020-12-22 07:45:14,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:14,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309682762] [2020-12-22 07:45:14,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:15,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:15,433 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 07:45:15,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309682762] [2020-12-22 07:45:15,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:15,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:45:15,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508676220] [2020-12-22 07:45:15,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:45:15,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:15,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:45:15,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:45:15,437 INFO L87 Difference]: Start difference. First operand 17733 states and 30122 transitions. Second operand 4 states. [2020-12-22 07:45:16,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:16,155 INFO L93 Difference]: Finished difference Result 52788 states and 89750 transitions. [2020-12-22 07:45:16,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:45:16,156 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 239 [2020-12-22 07:45:16,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:45:16,271 INFO L225 Difference]: With dead ends: 52788 [2020-12-22 07:45:16,271 INFO L226 Difference]: Without dead ends: 35606 [2020-12-22 07:45:16,314 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 07:45:16,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35606 states. [2020-12-22 07:45:17,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35606 to 26401. [2020-12-22 07:45:17,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26401 states. [2020-12-22 07:45:17,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26401 states to 26401 states and 44789 transitions. [2020-12-22 07:45:17,549 INFO L78 Accepts]: Start accepts. Automaton has 26401 states and 44789 transitions. Word has length 239 [2020-12-22 07:45:17,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:45:17,550 INFO L481 AbstractCegarLoop]: Abstraction has 26401 states and 44789 transitions. [2020-12-22 07:45:17,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:45:17,550 INFO L276 IsEmpty]: Start isEmpty. Operand 26401 states and 44789 transitions. [2020-12-22 07:45:17,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-12-22 07:45:17,564 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:17,565 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:45:17,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 07:45:17,565 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:17,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:17,567 INFO L82 PathProgramCache]: Analyzing trace with hash 240830268, now seen corresponding path program 1 times [2020-12-22 07:45:17,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:17,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561360704] [2020-12-22 07:45:17,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:17,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:17,820 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 07:45:17,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561360704] [2020-12-22 07:45:17,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:17,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:45:17,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750604180] [2020-12-22 07:45:17,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:45:17,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:17,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:45:17,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:45:17,824 INFO L87 Difference]: Start difference. First operand 26401 states and 44789 transitions. Second operand 4 states. [2020-12-22 07:45:19,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:19,044 INFO L93 Difference]: Finished difference Result 79117 states and 134376 transitions. [2020-12-22 07:45:19,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:45:19,045 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 240 [2020-12-22 07:45:19,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:45:19,206 INFO L225 Difference]: With dead ends: 79117 [2020-12-22 07:45:19,206 INFO L226 Difference]: Without dead ends: 53267 [2020-12-22 07:45:19,248 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 07:45:19,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53267 states. [2020-12-22 07:45:20,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53267 to 39309. [2020-12-22 07:45:20,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39309 states. [2020-12-22 07:45:20,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39309 states to 39309 states and 66612 transitions. [2020-12-22 07:45:20,771 INFO L78 Accepts]: Start accepts. Automaton has 39309 states and 66612 transitions. Word has length 240 [2020-12-22 07:45:20,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:45:20,772 INFO L481 AbstractCegarLoop]: Abstraction has 39309 states and 66612 transitions. [2020-12-22 07:45:20,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:45:20,772 INFO L276 IsEmpty]: Start isEmpty. Operand 39309 states and 66612 transitions. [2020-12-22 07:45:20,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-12-22 07:45:20,791 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:20,791 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:45:20,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 07:45:20,792 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:20,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:20,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1445801445, now seen corresponding path program 1 times [2020-12-22 07:45:20,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:20,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433541555] [2020-12-22 07:45:20,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:20,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:21,222 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 07:45:21,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433541555] [2020-12-22 07:45:21,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:21,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:45:21,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147957576] [2020-12-22 07:45:21,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:45:21,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:21,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:45:21,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:45:21,226 INFO L87 Difference]: Start difference. First operand 39309 states and 66612 transitions. Second operand 3 states. [2020-12-22 07:45:22,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:22,414 INFO L93 Difference]: Finished difference Result 91016 states and 154562 transitions. [2020-12-22 07:45:22,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:45:22,415 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2020-12-22 07:45:22,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:45:22,573 INFO L225 Difference]: With dead ends: 91016 [2020-12-22 07:45:22,574 INFO L226 Difference]: Without dead ends: 62445 [2020-12-22 07:45:22,612 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 07:45:22,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62445 states. [2020-12-22 07:45:24,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62445 to 62443. [2020-12-22 07:45:24,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62443 states. [2020-12-22 07:45:24,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62443 states to 62443 states and 105666 transitions. [2020-12-22 07:45:24,371 INFO L78 Accepts]: Start accepts. Automaton has 62443 states and 105666 transitions. Word has length 241 [2020-12-22 07:45:24,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:45:24,371 INFO L481 AbstractCegarLoop]: Abstraction has 62443 states and 105666 transitions. [2020-12-22 07:45:24,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:45:24,371 INFO L276 IsEmpty]: Start isEmpty. Operand 62443 states and 105666 transitions. [2020-12-22 07:45:24,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-12-22 07:45:24,389 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:24,389 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:45:24,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 07:45:24,390 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:24,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:24,391 INFO L82 PathProgramCache]: Analyzing trace with hash 384077095, now seen corresponding path program 1 times [2020-12-22 07:45:24,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:24,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614053140] [2020-12-22 07:45:24,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:24,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:24,753 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 07:45:24,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614053140] [2020-12-22 07:45:24,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:24,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:45:24,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411125167] [2020-12-22 07:45:24,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:45:24,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:24,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:45:24,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:45:24,758 INFO L87 Difference]: Start difference. First operand 62443 states and 105666 transitions. Second operand 3 states. [2020-12-22 07:45:26,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:26,274 INFO L93 Difference]: Finished difference Result 139378 states and 235916 transitions. [2020-12-22 07:45:26,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:45:26,275 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2020-12-22 07:45:26,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:45:26,473 INFO L225 Difference]: With dead ends: 139378 [2020-12-22 07:45:26,474 INFO L226 Difference]: Without dead ends: 96539 [2020-12-22 07:45:26,530 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 07:45:26,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96539 states. [2020-12-22 07:45:28,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96539 to 96537. [2020-12-22 07:45:28,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96537 states. [2020-12-22 07:45:28,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96537 states to 96537 states and 162877 transitions. [2020-12-22 07:45:28,956 INFO L78 Accepts]: Start accepts. Automaton has 96537 states and 162877 transitions. Word has length 241 [2020-12-22 07:45:28,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:45:28,956 INFO L481 AbstractCegarLoop]: Abstraction has 96537 states and 162877 transitions. [2020-12-22 07:45:28,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:45:28,956 INFO L276 IsEmpty]: Start isEmpty. Operand 96537 states and 162877 transitions. [2020-12-22 07:45:28,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-12-22 07:45:28,961 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:28,962 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:45:28,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 07:45:28,962 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:28,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:28,963 INFO L82 PathProgramCache]: Analyzing trace with hash 698928679, now seen corresponding path program 1 times [2020-12-22 07:45:28,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:28,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448311617] [2020-12-22 07:45:28,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:29,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:29,151 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 07:45:29,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448311617] [2020-12-22 07:45:29,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:29,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:45:29,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410826902] [2020-12-22 07:45:29,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:45:29,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:29,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:45:29,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:45:29,154 INFO L87 Difference]: Start difference. First operand 96537 states and 162877 transitions. Second operand 3 states. [2020-12-22 07:45:31,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:31,676 INFO L93 Difference]: Finished difference Result 214905 states and 362677 transitions. [2020-12-22 07:45:31,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:45:31,676 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2020-12-22 07:45:31,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:45:31,972 INFO L225 Difference]: With dead ends: 214905 [2020-12-22 07:45:31,972 INFO L226 Difference]: Without dead ends: 148403 [2020-12-22 07:45:32,039 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 07:45:32,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148403 states. [2020-12-22 07:45:35,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148403 to 148401. [2020-12-22 07:45:35,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148401 states. [2020-12-22 07:45:35,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148401 states to 148401 states and 249531 transitions. [2020-12-22 07:45:35,656 INFO L78 Accepts]: Start accepts. Automaton has 148401 states and 249531 transitions. Word has length 241 [2020-12-22 07:45:35,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:45:35,656 INFO L481 AbstractCegarLoop]: Abstraction has 148401 states and 249531 transitions. [2020-12-22 07:45:35,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:45:35,657 INFO L276 IsEmpty]: Start isEmpty. Operand 148401 states and 249531 transitions. [2020-12-22 07:45:35,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-12-22 07:45:35,661 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:35,661 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:45:35,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 07:45:35,662 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:35,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:35,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1094586151, now seen corresponding path program 1 times [2020-12-22 07:45:35,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:35,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195438846] [2020-12-22 07:45:35,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:36,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:36,242 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 07:45:36,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195438846] [2020-12-22 07:45:36,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:36,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:45:36,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220422775] [2020-12-22 07:45:36,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:45:36,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:36,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:45:36,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:45:36,245 INFO L87 Difference]: Start difference. First operand 148401 states and 249531 transitions. Second operand 3 states. [2020-12-22 07:45:39,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:39,376 INFO L93 Difference]: Finished difference Result 289986 states and 487947 transitions. [2020-12-22 07:45:39,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:45:39,376 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2020-12-22 07:45:39,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:45:39,830 INFO L225 Difference]: With dead ends: 289986 [2020-12-22 07:45:39,831 INFO L226 Difference]: Without dead ends: 209603 [2020-12-22 07:45:39,928 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 07:45:40,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209603 states. [2020-12-22 07:45:44,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209603 to 209601. [2020-12-22 07:45:44,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209601 states. [2020-12-22 07:45:45,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209601 states to 209601 states and 351353 transitions. [2020-12-22 07:45:45,344 INFO L78 Accepts]: Start accepts. Automaton has 209601 states and 351353 transitions. Word has length 241 [2020-12-22 07:45:45,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:45:45,345 INFO L481 AbstractCegarLoop]: Abstraction has 209601 states and 351353 transitions. [2020-12-22 07:45:45,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:45:45,346 INFO L276 IsEmpty]: Start isEmpty. Operand 209601 states and 351353 transitions. [2020-12-22 07:45:45,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-12-22 07:45:45,365 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:45,366 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:45:45,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 07:45:45,367 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:45,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:45,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1096527833, now seen corresponding path program 1 times [2020-12-22 07:45:45,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:45,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343176092] [2020-12-22 07:45:45,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:45,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:45,616 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 07:45:45,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343176092] [2020-12-22 07:45:45,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:45,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:45:45,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343690575] [2020-12-22 07:45:45,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:45:45,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:45,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:45:45,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:45:45,622 INFO L87 Difference]: Start difference. First operand 209601 states and 351353 transitions. Second operand 3 states. [2020-12-22 07:45:50,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:50,378 INFO L93 Difference]: Finished difference Result 406666 states and 682259 transitions. [2020-12-22 07:45:50,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:45:50,378 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2020-12-22 07:45:50,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:45:51,007 INFO L225 Difference]: With dead ends: 406666 [2020-12-22 07:45:51,007 INFO L226 Difference]: Without dead ends: 293743 [2020-12-22 07:45:51,127 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 07:45:51,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293743 states. [2020-12-22 07:45:57,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293743 to 293741. [2020-12-22 07:45:57,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293741 states. [2020-12-22 07:45:58,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293741 states to 293741 states and 490720 transitions. [2020-12-22 07:45:58,966 INFO L78 Accepts]: Start accepts. Automaton has 293741 states and 490720 transitions. Word has length 241 [2020-12-22 07:45:58,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:45:58,969 INFO L481 AbstractCegarLoop]: Abstraction has 293741 states and 490720 transitions. [2020-12-22 07:45:58,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:45:58,970 INFO L276 IsEmpty]: Start isEmpty. Operand 293741 states and 490720 transitions. [2020-12-22 07:45:58,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-12-22 07:45:58,972 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:58,972 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:45:58,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 07:45:58,972 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:58,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:58,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1411404802, now seen corresponding path program 1 times [2020-12-22 07:45:58,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:58,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326205056] [2020-12-22 07:45:58,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:59,226 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 07:45:59,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326205056] [2020-12-22 07:45:59,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:59,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:45:59,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683662800] [2020-12-22 07:45:59,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:45:59,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:59,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:45:59,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:45:59,230 INFO L87 Difference]: Start difference. First operand 293741 states and 490720 transitions. Second operand 4 states. [2020-12-22 07:46:10,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:46:10,693 INFO L93 Difference]: Finished difference Result 970895 states and 1623622 transitions. [2020-12-22 07:46:10,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:46:10,693 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 241 [2020-12-22 07:46:10,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:46:12,318 INFO L225 Difference]: With dead ends: 970895 [2020-12-22 07:46:12,319 INFO L226 Difference]: Without dead ends: 677787 [2020-12-22 07:46:12,669 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 07:46:13,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677787 states. [2020-12-22 07:46:29,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677787 to 479888. [2020-12-22 07:46:29,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479888 states. [2020-12-22 07:46:30,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479888 states to 479888 states and 799756 transitions. [2020-12-22 07:46:30,863 INFO L78 Accepts]: Start accepts. Automaton has 479888 states and 799756 transitions. Word has length 241 [2020-12-22 07:46:30,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:46:30,864 INFO L481 AbstractCegarLoop]: Abstraction has 479888 states and 799756 transitions. [2020-12-22 07:46:30,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:46:30,864 INFO L276 IsEmpty]: Start isEmpty. Operand 479888 states and 799756 transitions. [2020-12-22 07:46:30,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-12-22 07:46:30,880 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:46:30,883 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:46:30,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 07:46:30,884 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:46:30,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:46:30,885 INFO L82 PathProgramCache]: Analyzing trace with hash -786485965, now seen corresponding path program 1 times [2020-12-22 07:46:30,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:46:30,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069135510] [2020-12-22 07:46:30,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:46:30,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:46:31,773 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 07:46:31,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069135510] [2020-12-22 07:46:31,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:46:31,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:46:31,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264092261] [2020-12-22 07:46:31,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:46:31,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:46:31,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:46:31,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:46:31,778 INFO L87 Difference]: Start difference. First operand 479888 states and 799756 transitions. Second operand 4 states. [2020-12-22 07:46:51,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:46:51,042 INFO L93 Difference]: Finished difference Result 1553379 states and 2591719 transitions. [2020-12-22 07:46:51,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:46:51,043 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 242 [2020-12-22 07:46:51,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:46:54,200 INFO L225 Difference]: With dead ends: 1553379 [2020-12-22 07:46:54,200 INFO L226 Difference]: Without dead ends: 1074124 [2020-12-22 07:46:54,786 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 07:46:55,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074124 states. [2020-12-22 07:47:24,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074124 to 775639. [2020-12-22 07:47:24,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775639 states. [2020-12-22 07:47:28,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775639 states to 775639 states and 1289584 transitions. [2020-12-22 07:47:28,822 INFO L78 Accepts]: Start accepts. Automaton has 775639 states and 1289584 transitions. Word has length 242 [2020-12-22 07:47:28,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:47:28,822 INFO L481 AbstractCegarLoop]: Abstraction has 775639 states and 1289584 transitions. [2020-12-22 07:47:28,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:47:28,823 INFO L276 IsEmpty]: Start isEmpty. Operand 775639 states and 1289584 transitions. [2020-12-22 07:47:28,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-12-22 07:47:28,830 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:47:28,833 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:47:28,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 07:47:28,834 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:47:28,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:47:28,834 INFO L82 PathProgramCache]: Analyzing trace with hash 2091464427, now seen corresponding path program 1 times [2020-12-22 07:47:28,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:47:28,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795444832] [2020-12-22 07:47:28,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:47:28,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:47:30,933 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 07:47:30,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795444832] [2020-12-22 07:47:30,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:47:30,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 07:47:30,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022998048] [2020-12-22 07:47:30,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:47:30,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:47:30,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:47:30,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:47:30,941 INFO L87 Difference]: Start difference. First operand 775639 states and 1289584 transitions. Second operand 7 states.