/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 09:11:34,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 09:11:34,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 09:11:34,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 09:11:34,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 09:11:34,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 09:11:34,776 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 09:11:34,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 09:11:34,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 09:11:34,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 09:11:34,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 09:11:34,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 09:11:34,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 09:11:34,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 09:11:34,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 09:11:34,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 09:11:34,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 09:11:34,809 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 09:11:34,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 09:11:34,815 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 09:11:34,817 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 09:11:34,819 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 09:11:34,820 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 09:11:34,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 09:11:34,834 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 09:11:34,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 09:11:34,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 09:11:34,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 09:11:34,853 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 09:11:34,903 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 09:11:34,903 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 09:11:34,908 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 09:11:34,908 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 09:11:34,909 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 09:11:34,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 09:11:34,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 09:11:34,909 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 09:11:34,909 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 09:11:34,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 09:11:34,911 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 09:11:34,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 09:11:34,911 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 09:11:34,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 09:11:34,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 09:11:34,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 09:11:34,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 09:11:34,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:11:34,914 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 09:11:34,915 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 09:11:34,916 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 09:11:34,918 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 09:11:34,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 09:11:34,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 09:11:34,919 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 09:11:34,921 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 09:11:35,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 09:11:35,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 09:11:35,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 09:11:35,353 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 09:11:35,353 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 09:11:35,354 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-12-22 09:11:35,446 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fa10cdd6/2ae57ac2535744a4bf49b51cadc9e372/FLAG7944427f3 [2020-12-22 09:11:36,315 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 09:11:36,315 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-12-22 09:11:36,345 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fa10cdd6/2ae57ac2535744a4bf49b51cadc9e372/FLAG7944427f3 [2020-12-22 09:11:36,460 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fa10cdd6/2ae57ac2535744a4bf49b51cadc9e372 [2020-12-22 09:11:36,464 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 09:11:36,467 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 09:11:36,469 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 09:11:36,470 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 09:11:36,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 09:11:36,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:11:36" (1/1) ... [2020-12-22 09:11:36,478 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ea397bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:11:36, skipping insertion in model container [2020-12-22 09:11:36,478 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:11:36" (1/1) ... [2020-12-22 09:11:36,487 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 09:11:36,600 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 09:11:37,261 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[22496,22509] [2020-12-22 09:11:37,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:11:37,515 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 09:11:37,638 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[22496,22509] [2020-12-22 09:11:37,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:11:37,744 INFO L208 MainTranslator]: Completed translation [2020-12-22 09:11:37,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:11:37 WrapperNode [2020-12-22 09:11:37,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 09:11:37,748 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 09:11:37,749 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 09:11:37,749 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 09:11:37,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:11:37" (1/1) ... [2020-12-22 09:11:37,795 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:11:37" (1/1) ... [2020-12-22 09:11:37,913 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 09:11:37,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 09:11:37,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 09:11:37,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 09:11:37,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:11:37" (1/1) ... [2020-12-22 09:11:37,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:11:37" (1/1) ... [2020-12-22 09:11:37,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:11:37" (1/1) ... [2020-12-22 09:11:37,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:11:37" (1/1) ... [2020-12-22 09:11:38,016 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:11:37" (1/1) ... [2020-12-22 09:11:38,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:11:37" (1/1) ... [2020-12-22 09:11:38,052 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:11:37" (1/1) ... [2020-12-22 09:11:38,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 09:11:38,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 09:11:38,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 09:11:38,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 09:11:38,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:11:37" (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 09:11:38,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 09:11:38,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 09:11:38,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 09:11:38,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 09:11:40,390 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 09:11:40,391 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 09:11:40,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:11:40 BoogieIcfgContainer [2020-12-22 09:11:40,394 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 09:11:40,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 09:11:40,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 09:11:40,399 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 09:11:40,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:11:36" (1/3) ... [2020-12-22 09:11:40,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241f2c25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:11:40, skipping insertion in model container [2020-12-22 09:11:40,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:11:37" (2/3) ... [2020-12-22 09:11:40,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241f2c25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:11:40, skipping insertion in model container [2020-12-22 09:11:40,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:11:40" (3/3) ... [2020-12-22 09:11:40,404 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-12-22 09:11:40,411 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 09:11:40,417 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 09:11:40,438 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 09:11:40,470 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 09:11:40,471 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 09:11:40,471 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 09:11:40,471 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 09:11:40,471 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 09:11:40,471 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 09:11:40,472 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 09:11:40,472 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 09:11:40,504 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states. [2020-12-22 09:11:40,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-12-22 09:11:40,532 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:11:40,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:11:40,534 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:11:40,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:11:40,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1014698446, now seen corresponding path program 1 times [2020-12-22 09:11:40,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:11:40,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827168879] [2020-12-22 09:11:40,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:11:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:11:41,414 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 09:11:41,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827168879] [2020-12-22 09:11:41,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:11:41,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:11:41,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333884584] [2020-12-22 09:11:41,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:11:41,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:11:41,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:11:41,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:11:41,443 INFO L87 Difference]: Start difference. First operand 770 states. Second operand 3 states. [2020-12-22 09:11:41,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:11:41,648 INFO L93 Difference]: Finished difference Result 1200 states and 2139 transitions. [2020-12-22 09:11:41,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:11:41,650 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 213 [2020-12-22 09:11:41,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:11:41,692 INFO L225 Difference]: With dead ends: 1200 [2020-12-22 09:11:41,693 INFO L226 Difference]: Without dead ends: 972 [2020-12-22 09:11:41,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:11:41,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2020-12-22 09:11:41,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 970. [2020-12-22 09:11:41,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-12-22 09:11:41,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1682 transitions. [2020-12-22 09:11:41,821 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1682 transitions. Word has length 213 [2020-12-22 09:11:41,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:11:41,823 INFO L481 AbstractCegarLoop]: Abstraction has 970 states and 1682 transitions. [2020-12-22 09:11:41,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:11:41,823 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1682 transitions. [2020-12-22 09:11:41,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-12-22 09:11:41,828 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:11:41,829 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 09:11:41,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 09:11:41,829 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:11:41,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:11:41,830 INFO L82 PathProgramCache]: Analyzing trace with hash 327914487, now seen corresponding path program 1 times [2020-12-22 09:11:41,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:11:41,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103723728] [2020-12-22 09:11:41,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:11:41,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:11:42,295 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 09:11:42,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103723728] [2020-12-22 09:11:42,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:11:42,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:11:42,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183177961] [2020-12-22 09:11:42,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:11:42,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:11:42,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:11:42,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:11:42,305 INFO L87 Difference]: Start difference. First operand 970 states and 1682 transitions. Second operand 3 states. [2020-12-22 09:11:42,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:11:42,404 INFO L93 Difference]: Finished difference Result 1790 states and 3066 transitions. [2020-12-22 09:11:42,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:11:42,405 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2020-12-22 09:11:42,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:11:42,427 INFO L225 Difference]: With dead ends: 1790 [2020-12-22 09:11:42,428 INFO L226 Difference]: Without dead ends: 1368 [2020-12-22 09:11:42,437 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 09:11:42,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2020-12-22 09:11:42,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 1366. [2020-12-22 09:11:42,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1366 states. [2020-12-22 09:11:42,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 2349 transitions. [2020-12-22 09:11:42,553 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 2349 transitions. Word has length 217 [2020-12-22 09:11:42,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:11:42,556 INFO L481 AbstractCegarLoop]: Abstraction has 1366 states and 2349 transitions. [2020-12-22 09:11:42,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:11:42,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 2349 transitions. [2020-12-22 09:11:42,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-12-22 09:11:42,609 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:11:42,610 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 09:11:42,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 09:11:42,610 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:11:42,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:11:42,612 INFO L82 PathProgramCache]: Analyzing trace with hash 279788732, now seen corresponding path program 1 times [2020-12-22 09:11:42,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:11:42,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94189095] [2020-12-22 09:11:42,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:11:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:11:42,897 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 09:11:42,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94189095] [2020-12-22 09:11:42,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:11:42,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:11:42,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263567848] [2020-12-22 09:11:42,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:11:42,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:11:42,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:11:42,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:11:42,915 INFO L87 Difference]: Start difference. First operand 1366 states and 2349 transitions. Second operand 3 states. [2020-12-22 09:11:42,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:11:42,999 INFO L93 Difference]: Finished difference Result 2954 states and 5023 transitions. [2020-12-22 09:11:43,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:11:43,000 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 221 [2020-12-22 09:11:43,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:11:43,014 INFO L225 Difference]: With dead ends: 2954 [2020-12-22 09:11:43,015 INFO L226 Difference]: Without dead ends: 2136 [2020-12-22 09:11:43,018 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 09:11:43,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2136 states. [2020-12-22 09:11:43,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2136 to 2134. [2020-12-22 09:11:43,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2134 states. [2020-12-22 09:11:43,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2134 states to 2134 states and 3637 transitions. [2020-12-22 09:11:43,130 INFO L78 Accepts]: Start accepts. Automaton has 2134 states and 3637 transitions. Word has length 221 [2020-12-22 09:11:43,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:11:43,137 INFO L481 AbstractCegarLoop]: Abstraction has 2134 states and 3637 transitions. [2020-12-22 09:11:43,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:11:43,138 INFO L276 IsEmpty]: Start isEmpty. Operand 2134 states and 3637 transitions. [2020-12-22 09:11:43,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-12-22 09:11:43,144 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:11:43,144 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 09:11:43,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 09:11:43,144 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:11:43,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:11:43,145 INFO L82 PathProgramCache]: Analyzing trace with hash 591971201, now seen corresponding path program 1 times [2020-12-22 09:11:43,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:11:43,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812935906] [2020-12-22 09:11:43,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:11:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:11:43,416 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 09:11:43,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812935906] [2020-12-22 09:11:43,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:11:43,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:11:43,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293489381] [2020-12-22 09:11:43,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:11:43,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:11:43,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:11:43,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:11:43,426 INFO L87 Difference]: Start difference. First operand 2134 states and 3637 transitions. Second operand 3 states. [2020-12-22 09:11:43,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:11:43,603 INFO L93 Difference]: Finished difference Result 5210 states and 8799 transitions. [2020-12-22 09:11:43,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:11:43,604 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 225 [2020-12-22 09:11:43,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:11:43,661 INFO L225 Difference]: With dead ends: 5210 [2020-12-22 09:11:43,661 INFO L226 Difference]: Without dead ends: 3624 [2020-12-22 09:11:43,666 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 09:11:43,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3624 states. [2020-12-22 09:11:43,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3624 to 3622. [2020-12-22 09:11:43,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3622 states. [2020-12-22 09:11:43,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 6121 transitions. [2020-12-22 09:11:43,855 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 6121 transitions. Word has length 225 [2020-12-22 09:11:43,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:11:43,856 INFO L481 AbstractCegarLoop]: Abstraction has 3622 states and 6121 transitions. [2020-12-22 09:11:43,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:11:43,857 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 6121 transitions. [2020-12-22 09:11:43,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-12-22 09:11:43,864 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:11:43,864 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 09:11:43,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 09:11:43,865 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:11:43,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:11:43,865 INFO L82 PathProgramCache]: Analyzing trace with hash -62749882, now seen corresponding path program 1 times [2020-12-22 09:11:43,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:11:43,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722853940] [2020-12-22 09:11:43,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:11:43,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:11:44,128 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 09:11:44,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722853940] [2020-12-22 09:11:44,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:11:44,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:11:44,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428780593] [2020-12-22 09:11:44,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:11:44,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:11:44,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:11:44,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:11:44,134 INFO L87 Difference]: Start difference. First operand 3622 states and 6121 transitions. Second operand 3 states. [2020-12-22 09:11:44,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:11:44,426 INFO L93 Difference]: Finished difference Result 9578 states and 16075 transitions. [2020-12-22 09:11:44,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:11:44,426 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 229 [2020-12-22 09:11:44,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:11:44,464 INFO L225 Difference]: With dead ends: 9578 [2020-12-22 09:11:44,464 INFO L226 Difference]: Without dead ends: 6504 [2020-12-22 09:11:44,474 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 09:11:44,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6504 states. [2020-12-22 09:11:44,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6504 to 6502. [2020-12-22 09:11:44,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6502 states. [2020-12-22 09:11:44,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6502 states to 6502 states and 10905 transitions. [2020-12-22 09:11:44,775 INFO L78 Accepts]: Start accepts. Automaton has 6502 states and 10905 transitions. Word has length 229 [2020-12-22 09:11:44,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:11:44,776 INFO L481 AbstractCegarLoop]: Abstraction has 6502 states and 10905 transitions. [2020-12-22 09:11:44,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:11:44,776 INFO L276 IsEmpty]: Start isEmpty. Operand 6502 states and 10905 transitions. [2020-12-22 09:11:44,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-12-22 09:11:44,783 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:11:44,783 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 09:11:44,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 09:11:44,783 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:11:44,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:11:44,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1568385269, now seen corresponding path program 1 times [2020-12-22 09:11:44,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:11:44,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055960117] [2020-12-22 09:11:44,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:11:44,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:11:45,141 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 09:11:45,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055960117] [2020-12-22 09:11:45,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:11:45,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:11:45,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118881654] [2020-12-22 09:11:45,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:11:45,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:11:45,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:11:45,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:11:45,145 INFO L87 Difference]: Start difference. First operand 6502 states and 10905 transitions. Second operand 7 states. [2020-12-22 09:11:47,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:11:47,468 INFO L93 Difference]: Finished difference Result 39709 states and 66609 transitions. [2020-12-22 09:11:47,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 09:11:47,469 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 233 [2020-12-22 09:11:47,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:11:47,615 INFO L225 Difference]: With dead ends: 39709 [2020-12-22 09:11:47,615 INFO L226 Difference]: Without dead ends: 33755 [2020-12-22 09:11:47,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-22 09:11:47,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33755 states. [2020-12-22 09:11:48,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33755 to 12299. [2020-12-22 09:11:48,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12299 states. [2020-12-22 09:11:48,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12299 states to 12299 states and 20544 transitions. [2020-12-22 09:11:48,887 INFO L78 Accepts]: Start accepts. Automaton has 12299 states and 20544 transitions. Word has length 233 [2020-12-22 09:11:48,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:11:48,888 INFO L481 AbstractCegarLoop]: Abstraction has 12299 states and 20544 transitions. [2020-12-22 09:11:48,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:11:48,888 INFO L276 IsEmpty]: Start isEmpty. Operand 12299 states and 20544 transitions. [2020-12-22 09:11:48,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-12-22 09:11:48,902 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:11:48,902 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] [2020-12-22 09:11:48,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 09:11:48,903 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:11:48,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:11:48,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1446922808, now seen corresponding path program 1 times [2020-12-22 09:11:48,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:11:48,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028991581] [2020-12-22 09:11:48,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:11:49,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:11:49,243 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 09:11:49,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028991581] [2020-12-22 09:11:49,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:11:49,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:11:49,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335562075] [2020-12-22 09:11:49,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:11:49,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:11:49,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:11:49,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:11:49,265 INFO L87 Difference]: Start difference. First operand 12299 states and 20544 transitions. Second operand 4 states. [2020-12-22 09:11:50,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:11:50,650 INFO L93 Difference]: Finished difference Result 32980 states and 55178 transitions. [2020-12-22 09:11:50,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:11:50,651 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 234 [2020-12-22 09:11:50,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:11:50,709 INFO L225 Difference]: With dead ends: 32980 [2020-12-22 09:11:50,709 INFO L226 Difference]: Without dead ends: 21229 [2020-12-22 09:11:50,728 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 09:11:50,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21229 states. [2020-12-22 09:11:52,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21229 to 18275. [2020-12-22 09:11:52,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18275 states. [2020-12-22 09:11:52,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18275 states to 18275 states and 30540 transitions. [2020-12-22 09:11:52,191 INFO L78 Accepts]: Start accepts. Automaton has 18275 states and 30540 transitions. Word has length 234 [2020-12-22 09:11:52,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:11:52,192 INFO L481 AbstractCegarLoop]: Abstraction has 18275 states and 30540 transitions. [2020-12-22 09:11:52,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:11:52,192 INFO L276 IsEmpty]: Start isEmpty. Operand 18275 states and 30540 transitions. [2020-12-22 09:11:52,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-12-22 09:11:52,204 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:11:52,205 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] [2020-12-22 09:11:52,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 09:11:52,205 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:11:52,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:11:52,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1971995790, now seen corresponding path program 1 times [2020-12-22 09:11:52,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:11:52,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335009616] [2020-12-22 09:11:52,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:11:52,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:11:52,415 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 09:11:52,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335009616] [2020-12-22 09:11:52,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:11:52,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:11:52,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137644813] [2020-12-22 09:11:52,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:11:52,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:11:52,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:11:52,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:11:52,419 INFO L87 Difference]: Start difference. First operand 18275 states and 30540 transitions. Second operand 4 states. [2020-12-22 09:11:53,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:11:53,923 INFO L93 Difference]: Finished difference Result 49280 states and 82392 transitions. [2020-12-22 09:11:53,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:11:53,924 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 235 [2020-12-22 09:11:53,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:11:54,004 INFO L225 Difference]: With dead ends: 49280 [2020-12-22 09:11:54,005 INFO L226 Difference]: Without dead ends: 31553 [2020-12-22 09:11:54,034 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 09:11:54,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31553 states. [2020-12-22 09:11:55,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31553 to 27194. [2020-12-22 09:11:55,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27194 states. [2020-12-22 09:11:55,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27194 states to 27194 states and 45385 transitions. [2020-12-22 09:11:55,688 INFO L78 Accepts]: Start accepts. Automaton has 27194 states and 45385 transitions. Word has length 235 [2020-12-22 09:11:55,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:11:55,689 INFO L481 AbstractCegarLoop]: Abstraction has 27194 states and 45385 transitions. [2020-12-22 09:11:55,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:11:55,689 INFO L276 IsEmpty]: Start isEmpty. Operand 27194 states and 45385 transitions. [2020-12-22 09:11:55,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-12-22 09:11:55,706 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:11:55,706 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] [2020-12-22 09:11:55,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 09:11:55,707 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:11:55,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:11:55,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1509627090, now seen corresponding path program 1 times [2020-12-22 09:11:55,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:11:55,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947765417] [2020-12-22 09:11:55,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:11:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:11:55,895 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 09:11:55,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947765417] [2020-12-22 09:11:55,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:11:55,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:11:55,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484926390] [2020-12-22 09:11:55,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:11:55,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:11:55,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:11:55,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:11:55,898 INFO L87 Difference]: Start difference. First operand 27194 states and 45385 transitions. Second operand 3 states. [2020-12-22 09:11:57,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:11:57,781 INFO L93 Difference]: Finished difference Result 54830 states and 91504 transitions. [2020-12-22 09:11:57,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:11:57,782 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 235 [2020-12-22 09:11:57,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:11:57,890 INFO L225 Difference]: With dead ends: 54830 [2020-12-22 09:11:57,890 INFO L226 Difference]: Without dead ends: 40740 [2020-12-22 09:11:57,918 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 09:11:57,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40740 states. [2020-12-22 09:12:00,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40740 to 40738. [2020-12-22 09:12:00,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40738 states. [2020-12-22 09:12:00,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40738 states to 40738 states and 67782 transitions. [2020-12-22 09:12:00,264 INFO L78 Accepts]: Start accepts. Automaton has 40738 states and 67782 transitions. Word has length 235 [2020-12-22 09:12:00,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:12:00,265 INFO L481 AbstractCegarLoop]: Abstraction has 40738 states and 67782 transitions. [2020-12-22 09:12:00,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:12:00,265 INFO L276 IsEmpty]: Start isEmpty. Operand 40738 states and 67782 transitions. [2020-12-22 09:12:00,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-12-22 09:12:00,277 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:12:00,277 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] [2020-12-22 09:12:00,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 09:12:00,278 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:12:00,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:12:00,279 INFO L82 PathProgramCache]: Analyzing trace with hash -2133047208, now seen corresponding path program 1 times [2020-12-22 09:12:00,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:12:00,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056934474] [2020-12-22 09:12:00,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:12:00,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:12:00,447 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 09:12:00,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056934474] [2020-12-22 09:12:00,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:12:00,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:12:00,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633341408] [2020-12-22 09:12:00,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:12:00,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:12:00,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:12:00,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:12:00,454 INFO L87 Difference]: Start difference. First operand 40738 states and 67782 transitions. Second operand 3 states. [2020-12-22 09:12:03,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:12:03,041 INFO L93 Difference]: Finished difference Result 76598 states and 127580 transitions. [2020-12-22 09:12:03,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:12:03,041 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 235 [2020-12-22 09:12:03,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:12:03,164 INFO L225 Difference]: With dead ends: 76598 [2020-12-22 09:12:03,164 INFO L226 Difference]: Without dead ends: 56156 [2020-12-22 09:12:03,233 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 09:12:03,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56156 states. [2020-12-22 09:12:05,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56156 to 56154. [2020-12-22 09:12:05,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56154 states. [2020-12-22 09:12:06,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56154 states to 56154 states and 93250 transitions. [2020-12-22 09:12:06,050 INFO L78 Accepts]: Start accepts. Automaton has 56154 states and 93250 transitions. Word has length 235 [2020-12-22 09:12:06,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:12:06,050 INFO L481 AbstractCegarLoop]: Abstraction has 56154 states and 93250 transitions. [2020-12-22 09:12:06,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:12:06,051 INFO L276 IsEmpty]: Start isEmpty. Operand 56154 states and 93250 transitions. [2020-12-22 09:12:06,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-12-22 09:12:06,059 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:12:06,060 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:12:06,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 09:12:06,060 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:12:06,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:12:06,061 INFO L82 PathProgramCache]: Analyzing trace with hash -678490366, now seen corresponding path program 1 times [2020-12-22 09:12:06,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:12:06,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802743050] [2020-12-22 09:12:06,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:12:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:12:06,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:12:06,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802743050] [2020-12-22 09:12:06,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:12:06,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:12:06,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856013451] [2020-12-22 09:12:06,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:12:06,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:12:06,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:12:06,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:12:06,226 INFO L87 Difference]: Start difference. First operand 56154 states and 93250 transitions. Second operand 3 states. [2020-12-22 09:12:09,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:12:09,687 INFO L93 Difference]: Finished difference Result 106486 states and 177060 transitions. [2020-12-22 09:12:09,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:12:09,688 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 235 [2020-12-22 09:12:09,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:12:09,816 INFO L225 Difference]: With dead ends: 106486 [2020-12-22 09:12:09,816 INFO L226 Difference]: Without dead ends: 77530 [2020-12-22 09:12:09,849 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 09:12:10,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77530 states. [2020-12-22 09:12:13,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77530 to 77528. [2020-12-22 09:12:13,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77528 states. [2020-12-22 09:12:13,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77528 states to 77528 states and 128573 transitions. [2020-12-22 09:12:13,913 INFO L78 Accepts]: Start accepts. Automaton has 77528 states and 128573 transitions. Word has length 235 [2020-12-22 09:12:13,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:12:13,914 INFO L481 AbstractCegarLoop]: Abstraction has 77528 states and 128573 transitions. [2020-12-22 09:12:13,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:12:13,914 INFO L276 IsEmpty]: Start isEmpty. Operand 77528 states and 128573 transitions. [2020-12-22 09:12:13,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-12-22 09:12:13,920 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:12:13,920 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] [2020-12-22 09:12:13,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 09:12:13,921 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:12:13,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:12:13,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1764769580, now seen corresponding path program 1 times [2020-12-22 09:12:13,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:12:13,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70930449] [2020-12-22 09:12:13,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:12:13,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:12:14,079 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 09:12:14,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70930449] [2020-12-22 09:12:14,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:12:14,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:12:14,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223972237] [2020-12-22 09:12:14,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:12:14,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:12:14,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:12:14,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:12:14,081 INFO L87 Difference]: Start difference. First operand 77528 states and 128573 transitions. Second operand 3 states. [2020-12-22 09:12:19,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:12:19,558 INFO L93 Difference]: Finished difference Result 169418 states and 281147 transitions. [2020-12-22 09:12:19,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:12:19,559 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 235 [2020-12-22 09:12:19,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:12:19,771 INFO L225 Difference]: With dead ends: 169418 [2020-12-22 09:12:19,772 INFO L226 Difference]: Without dead ends: 116801 [2020-12-22 09:12:19,833 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 09:12:19,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116801 states. [2020-12-22 09:12:25,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116801 to 116799. [2020-12-22 09:12:25,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116799 states. [2020-12-22 09:12:25,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116799 states to 116799 states and 193234 transitions. [2020-12-22 09:12:25,662 INFO L78 Accepts]: Start accepts. Automaton has 116799 states and 193234 transitions. Word has length 235 [2020-12-22 09:12:25,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:12:25,662 INFO L481 AbstractCegarLoop]: Abstraction has 116799 states and 193234 transitions. [2020-12-22 09:12:25,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:12:25,662 INFO L276 IsEmpty]: Start isEmpty. Operand 116799 states and 193234 transitions. [2020-12-22 09:12:25,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-12-22 09:12:25,665 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:12:25,665 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] [2020-12-22 09:12:25,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 09:12:25,666 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:12:25,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:12:25,666 INFO L82 PathProgramCache]: Analyzing trace with hash -715990826, now seen corresponding path program 1 times [2020-12-22 09:12:25,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:12:25,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451765674] [2020-12-22 09:12:25,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:12:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:12:26,109 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 09:12:26,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451765674] [2020-12-22 09:12:26,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:12:26,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:12:26,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610507357] [2020-12-22 09:12:26,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:12:26,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:12:26,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:12:26,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:12:26,116 INFO L87 Difference]: Start difference. First operand 116799 states and 193234 transitions. Second operand 3 states. [2020-12-22 09:12:34,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:12:34,324 INFO L93 Difference]: Finished difference Result 256282 states and 425633 transitions. [2020-12-22 09:12:34,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:12:34,325 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 235 [2020-12-22 09:12:34,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:12:34,648 INFO L225 Difference]: With dead ends: 256282 [2020-12-22 09:12:34,648 INFO L226 Difference]: Without dead ends: 176199 [2020-12-22 09:12:34,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:12:34,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176199 states. [2020-12-22 09:12:43,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176199 to 176197. [2020-12-22 09:12:43,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176197 states. [2020-12-22 09:12:43,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176197 states to 176197 states and 291283 transitions. [2020-12-22 09:12:43,860 INFO L78 Accepts]: Start accepts. Automaton has 176197 states and 291283 transitions. Word has length 235 [2020-12-22 09:12:43,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:12:43,860 INFO L481 AbstractCegarLoop]: Abstraction has 176197 states and 291283 transitions. [2020-12-22 09:12:43,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:12:43,861 INFO L276 IsEmpty]: Start isEmpty. Operand 176197 states and 291283 transitions. [2020-12-22 09:12:43,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-12-22 09:12:43,862 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:12:43,862 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] [2020-12-22 09:12:43,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 09:12:43,863 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:12:43,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:12:43,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1064831025, now seen corresponding path program 1 times [2020-12-22 09:12:43,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:12:43,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764552698] [2020-12-22 09:12:43,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:12:43,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:12:44,425 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 09:12:44,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764552698] [2020-12-22 09:12:44,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:12:44,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:12:44,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695605891] [2020-12-22 09:12:44,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:12:44,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:12:44,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:12:44,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:12:44,428 INFO L87 Difference]: Start difference. First operand 176197 states and 291283 transitions. Second operand 4 states. [2020-12-22 09:13:01,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:13:01,142 INFO L93 Difference]: Finished difference Result 520420 states and 861406 transitions. [2020-12-22 09:13:01,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:13:01,142 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 236 [2020-12-22 09:13:01,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:13:01,982 INFO L225 Difference]: With dead ends: 520420 [2020-12-22 09:13:01,982 INFO L226 Difference]: Without dead ends: 344885 [2020-12-22 09:13:02,157 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 09:13:02,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344885 states.