/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_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:07:23,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:07:23,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:07:23,502 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:07:23,503 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:07:23,507 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:07:23,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:07:23,521 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:07:23,525 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:07:23,532 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:07:23,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:07:23,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:07:23,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:07:23,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:07:23,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:07:23,546 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:07:23,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:07:23,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:07:23,559 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:07:23,578 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:07:23,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:07:23,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:07:23,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:07:23,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:07:23,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:07:23,604 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:07:23,605 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:07:23,606 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:07:23,607 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:07:23,634 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:07:23,634 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:07:23,636 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:07:23,636 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:07:23,636 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:07:23,637 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:07:23,637 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:07:23,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:07:23,637 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:07:23,637 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:07:23,637 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:07:23,638 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:07:23,638 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:07:23,638 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:07:23,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:07:23,638 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:07:23,639 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:07:23,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:07:23,639 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:07:23,639 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:07:23,639 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:07:23,640 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:07:23,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:07:23,640 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:07:23,640 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:07:23,640 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:07:24,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:07:24,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:07:24,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:07:24,075 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:07:24,077 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:07:24,078 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 08:07:24,181 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3e9d9b19/d2043ac1cd2042f7a6e5f645e36d4edc/FLAG597bba754 [2020-12-22 08:07:25,008 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:07:25,008 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 08:07:25,030 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3e9d9b19/d2043ac1cd2042f7a6e5f645e36d4edc/FLAG597bba754 [2020-12-22 08:07:25,197 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3e9d9b19/d2043ac1cd2042f7a6e5f645e36d4edc [2020-12-22 08:07:25,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:07:25,203 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:07:25,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:07:25,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:07:25,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:07:25,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:07:25" (1/1) ... [2020-12-22 08:07:25,216 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79f6b3bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:07:25, skipping insertion in model container [2020-12-22 08:07:25,216 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:07:25" (1/1) ... [2020-12-22 08:07:25,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:07:25,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:07:25,971 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_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[31185,31198] [2020-12-22 08:07:26,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:07:26,245 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:07:26,589 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_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[31185,31198] [2020-12-22 08:07:26,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:07:26,767 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:07:26,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:07:26 WrapperNode [2020-12-22 08:07:26,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:07:26,770 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:07:26,770 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:07:26,770 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:07:26,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:07:26" (1/1) ... [2020-12-22 08:07:26,840 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:07:26" (1/1) ... [2020-12-22 08:07:26,946 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:07:26,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:07:26,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:07:26,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:07:26,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:07:26" (1/1) ... [2020-12-22 08:07:26,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:07:26" (1/1) ... [2020-12-22 08:07:26,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:07:26" (1/1) ... [2020-12-22 08:07:26,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:07:26" (1/1) ... [2020-12-22 08:07:27,041 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:07:26" (1/1) ... [2020-12-22 08:07:27,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:07:26" (1/1) ... [2020-12-22 08:07:27,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:07:26" (1/1) ... [2020-12-22 08:07:27,120 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:07:27,121 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:07:27,121 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:07:27,121 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:07:27,122 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:07:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:07:27,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:07:27,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:07:27,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:07:27,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:07:30,186 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:07:30,186 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:07:30,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:07:30 BoogieIcfgContainer [2020-12-22 08:07:30,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:07:30,191 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:07:30,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:07:30,195 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:07:30,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:07:25" (1/3) ... [2020-12-22 08:07:30,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bbebeb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:07:30, skipping insertion in model container [2020-12-22 08:07:30,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:07:26" (2/3) ... [2020-12-22 08:07:30,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bbebeb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:07:30, skipping insertion in model container [2020-12-22 08:07:30,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:07:30" (3/3) ... [2020-12-22 08:07:30,199 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 08:07:30,206 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:07:30,212 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:07:30,233 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:07:30,275 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:07:30,275 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:07:30,275 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:07:30,275 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:07:30,275 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:07:30,276 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:07:30,276 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:07:30,276 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:07:30,315 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states. [2020-12-22 08:07:30,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-12-22 08:07:30,357 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:07:30,359 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:07:30,360 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:07:30,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:07:30,367 INFO L82 PathProgramCache]: Analyzing trace with hash -347258118, now seen corresponding path program 1 times [2020-12-22 08:07:30,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:07:30,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065740229] [2020-12-22 08:07:30,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:07:30,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:07:31,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:07:31,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065740229] [2020-12-22 08:07:31,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:07:31,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:07:31,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142255311] [2020-12-22 08:07:31,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:07:31,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:07:31,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:07:31,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:07:31,486 INFO L87 Difference]: Start difference. First operand 720 states. Second operand 3 states. [2020-12-22 08:07:31,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:07:31,895 INFO L93 Difference]: Finished difference Result 1360 states and 2404 transitions. [2020-12-22 08:07:31,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:07:31,897 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 298 [2020-12-22 08:07:31,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:07:31,957 INFO L225 Difference]: With dead ends: 1360 [2020-12-22 08:07:31,958 INFO L226 Difference]: Without dead ends: 1169 [2020-12-22 08:07:31,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:07:31,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2020-12-22 08:07:32,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1167. [2020-12-22 08:07:32,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1167 states. [2020-12-22 08:07:32,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1814 transitions. [2020-12-22 08:07:32,116 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1814 transitions. Word has length 298 [2020-12-22 08:07:32,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:07:32,121 INFO L481 AbstractCegarLoop]: Abstraction has 1167 states and 1814 transitions. [2020-12-22 08:07:32,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:07:32,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1814 transitions. [2020-12-22 08:07:32,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-12-22 08:07:32,132 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:07:32,133 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:07:32,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:07:32,133 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:07:32,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:07:32,134 INFO L82 PathProgramCache]: Analyzing trace with hash -325765678, now seen corresponding path program 1 times [2020-12-22 08:07:32,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:07:32,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162839749] [2020-12-22 08:07:32,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:07:32,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:07:33,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:07:33,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162839749] [2020-12-22 08:07:33,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:07:33,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:07:33,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496829563] [2020-12-22 08:07:33,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:07:33,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:07:33,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:07:33,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:07:33,068 INFO L87 Difference]: Start difference. First operand 1167 states and 1814 transitions. Second operand 4 states. [2020-12-22 08:07:33,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:07:33,435 INFO L93 Difference]: Finished difference Result 3445 states and 5349 transitions. [2020-12-22 08:07:33,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:07:33,436 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 298 [2020-12-22 08:07:33,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:07:33,449 INFO L225 Difference]: With dead ends: 3445 [2020-12-22 08:07:33,450 INFO L226 Difference]: Without dead ends: 2289 [2020-12-22 08:07:33,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 08:07:33,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2289 states. [2020-12-22 08:07:33,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2289 to 2287. [2020-12-22 08:07:33,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2287 states. [2020-12-22 08:07:33,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2287 states to 2287 states and 3532 transitions. [2020-12-22 08:07:33,606 INFO L78 Accepts]: Start accepts. Automaton has 2287 states and 3532 transitions. Word has length 298 [2020-12-22 08:07:33,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:07:33,607 INFO L481 AbstractCegarLoop]: Abstraction has 2287 states and 3532 transitions. [2020-12-22 08:07:33,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:07:33,607 INFO L276 IsEmpty]: Start isEmpty. Operand 2287 states and 3532 transitions. [2020-12-22 08:07:33,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-12-22 08:07:33,617 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:07:33,617 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:07:33,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:07:33,618 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:07:33,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:07:33,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1924328863, now seen corresponding path program 1 times [2020-12-22 08:07:33,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:07:33,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248721299] [2020-12-22 08:07:33,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:07:33,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:07:33,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:07:33,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248721299] [2020-12-22 08:07:33,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:07:33,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:07:33,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932044718] [2020-12-22 08:07:33,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:07:33,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:07:33,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:07:33,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:07:33,852 INFO L87 Difference]: Start difference. First operand 2287 states and 3532 transitions. Second operand 3 states. [2020-12-22 08:07:34,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:07:34,180 INFO L93 Difference]: Finished difference Result 6824 states and 10533 transitions. [2020-12-22 08:07:34,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:07:34,180 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 300 [2020-12-22 08:07:34,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:07:34,207 INFO L225 Difference]: With dead ends: 6824 [2020-12-22 08:07:34,208 INFO L226 Difference]: Without dead ends: 4558 [2020-12-22 08:07:34,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:07:34,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4558 states. [2020-12-22 08:07:34,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4558 to 2300. [2020-12-22 08:07:34,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2300 states. [2020-12-22 08:07:34,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2300 states to 2300 states and 3551 transitions. [2020-12-22 08:07:34,444 INFO L78 Accepts]: Start accepts. Automaton has 2300 states and 3551 transitions. Word has length 300 [2020-12-22 08:07:34,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:07:34,450 INFO L481 AbstractCegarLoop]: Abstraction has 2300 states and 3551 transitions. [2020-12-22 08:07:34,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:07:34,451 INFO L276 IsEmpty]: Start isEmpty. Operand 2300 states and 3551 transitions. [2020-12-22 08:07:34,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-12-22 08:07:34,459 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:07:34,459 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:07:34,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:07:34,460 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:07:34,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:07:34,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1696649126, now seen corresponding path program 1 times [2020-12-22 08:07:34,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:07:34,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583830778] [2020-12-22 08:07:34,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:07:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:07:34,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:07:34,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583830778] [2020-12-22 08:07:34,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:07:34,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:07:34,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964693630] [2020-12-22 08:07:34,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:07:34,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:07:34,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:07:34,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:07:34,784 INFO L87 Difference]: Start difference. First operand 2300 states and 3551 transitions. Second operand 3 states. [2020-12-22 08:07:35,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:07:35,187 INFO L93 Difference]: Finished difference Result 6673 states and 10268 transitions. [2020-12-22 08:07:35,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:07:35,188 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 300 [2020-12-22 08:07:35,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:07:35,213 INFO L225 Difference]: With dead ends: 6673 [2020-12-22 08:07:35,214 INFO L226 Difference]: Without dead ends: 4511 [2020-12-22 08:07:35,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:07:35,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4511 states. [2020-12-22 08:07:35,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4511 to 4509. [2020-12-22 08:07:35,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4509 states. [2020-12-22 08:07:35,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4509 states to 4509 states and 6923 transitions. [2020-12-22 08:07:35,609 INFO L78 Accepts]: Start accepts. Automaton has 4509 states and 6923 transitions. Word has length 300 [2020-12-22 08:07:35,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:07:35,610 INFO L481 AbstractCegarLoop]: Abstraction has 4509 states and 6923 transitions. [2020-12-22 08:07:35,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:07:35,610 INFO L276 IsEmpty]: Start isEmpty. Operand 4509 states and 6923 transitions. [2020-12-22 08:07:35,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-12-22 08:07:35,622 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:07:35,622 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:07:35,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:07:35,623 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:07:35,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:07:35,624 INFO L82 PathProgramCache]: Analyzing trace with hash -325304478, now seen corresponding path program 1 times [2020-12-22 08:07:35,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:07:35,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456311522] [2020-12-22 08:07:35,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:07:35,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:07:35,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:07:35,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456311522] [2020-12-22 08:07:35,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:07:35,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:07:35,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833411439] [2020-12-22 08:07:35,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:07:35,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:07:35,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:07:35,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:07:35,759 INFO L87 Difference]: Start difference. First operand 4509 states and 6923 transitions. Second operand 3 states. [2020-12-22 08:07:36,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:07:36,328 INFO L93 Difference]: Finished difference Result 13422 states and 20590 transitions. [2020-12-22 08:07:36,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:07:36,331 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 301 [2020-12-22 08:07:36,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:07:36,379 INFO L225 Difference]: With dead ends: 13422 [2020-12-22 08:07:36,379 INFO L226 Difference]: Without dead ends: 8969 [2020-12-22 08:07:36,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:07:36,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8969 states. [2020-12-22 08:07:36,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8969 to 4527. [2020-12-22 08:07:36,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4527 states. [2020-12-22 08:07:36,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4527 states to 4527 states and 6944 transitions. [2020-12-22 08:07:36,914 INFO L78 Accepts]: Start accepts. Automaton has 4527 states and 6944 transitions. Word has length 301 [2020-12-22 08:07:36,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:07:36,915 INFO L481 AbstractCegarLoop]: Abstraction has 4527 states and 6944 transitions. [2020-12-22 08:07:36,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:07:36,915 INFO L276 IsEmpty]: Start isEmpty. Operand 4527 states and 6944 transitions. [2020-12-22 08:07:36,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-12-22 08:07:36,933 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:07:36,934 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:07:36,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:07:36,934 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:07:36,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:07:36,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1757393163, now seen corresponding path program 1 times [2020-12-22 08:07:36,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:07:36,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250383118] [2020-12-22 08:07:36,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:07:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:07:37,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:07:37,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250383118] [2020-12-22 08:07:37,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:07:37,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:07:37,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644745961] [2020-12-22 08:07:37,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:07:37,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:07:37,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:07:37,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:07:37,248 INFO L87 Difference]: Start difference. First operand 4527 states and 6944 transitions. Second operand 3 states. [2020-12-22 08:07:37,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:07:37,975 INFO L93 Difference]: Finished difference Result 13082 states and 19993 transitions. [2020-12-22 08:07:37,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:07:37,976 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 302 [2020-12-22 08:07:37,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:07:38,034 INFO L225 Difference]: With dead ends: 13082 [2020-12-22 08:07:38,034 INFO L226 Difference]: Without dead ends: 8796 [2020-12-22 08:07:38,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:07:38,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8796 states. [2020-12-22 08:07:38,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8796 to 8794. [2020-12-22 08:07:38,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8794 states. [2020-12-22 08:07:38,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8794 states to 8794 states and 13392 transitions. [2020-12-22 08:07:38,786 INFO L78 Accepts]: Start accepts. Automaton has 8794 states and 13392 transitions. Word has length 302 [2020-12-22 08:07:38,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:07:38,787 INFO L481 AbstractCegarLoop]: Abstraction has 8794 states and 13392 transitions. [2020-12-22 08:07:38,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:07:38,787 INFO L276 IsEmpty]: Start isEmpty. Operand 8794 states and 13392 transitions. [2020-12-22 08:07:38,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-12-22 08:07:38,812 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:07:38,812 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:07:38,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:07:38,813 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:07:38,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:07:38,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1401717138, now seen corresponding path program 1 times [2020-12-22 08:07:38,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:07:38,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359745540] [2020-12-22 08:07:38,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:07:39,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:07:39,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:07:39,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359745540] [2020-12-22 08:07:39,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:07:39,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:07:39,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280778523] [2020-12-22 08:07:39,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:07:39,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:07:39,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:07:39,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:07:39,333 INFO L87 Difference]: Start difference. First operand 8794 states and 13392 transitions. Second operand 5 states. [2020-12-22 08:07:40,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:07:40,739 INFO L93 Difference]: Finished difference Result 25772 states and 39177 transitions. [2020-12-22 08:07:40,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:07:40,740 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 302 [2020-12-22 08:07:40,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:07:40,788 INFO L225 Difference]: With dead ends: 25772 [2020-12-22 08:07:40,788 INFO L226 Difference]: Without dead ends: 17033 [2020-12-22 08:07:40,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:07:40,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17033 states. [2020-12-22 08:07:42,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17033 to 17031. [2020-12-22 08:07:42,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17031 states. [2020-12-22 08:07:42,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17031 states to 17031 states and 25713 transitions. [2020-12-22 08:07:42,122 INFO L78 Accepts]: Start accepts. Automaton has 17031 states and 25713 transitions. Word has length 302 [2020-12-22 08:07:42,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:07:42,122 INFO L481 AbstractCegarLoop]: Abstraction has 17031 states and 25713 transitions. [2020-12-22 08:07:42,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:07:42,122 INFO L276 IsEmpty]: Start isEmpty. Operand 17031 states and 25713 transitions. [2020-12-22 08:07:42,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-12-22 08:07:42,161 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:07:42,162 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:07:42,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:07:42,162 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:07:42,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:07:42,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1038150474, now seen corresponding path program 1 times [2020-12-22 08:07:42,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:07:42,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291669174] [2020-12-22 08:07:42,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:07:42,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:07:42,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:07:42,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291669174] [2020-12-22 08:07:42,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:07:42,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:07:42,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100382845] [2020-12-22 08:07:42,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:07:42,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:07:42,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:07:42,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:07:42,486 INFO L87 Difference]: Start difference. First operand 17031 states and 25713 transitions. Second operand 3 states. [2020-12-22 08:07:44,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:07:44,377 INFO L93 Difference]: Finished difference Result 49849 states and 75082 transitions. [2020-12-22 08:07:44,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:07:44,377 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 304 [2020-12-22 08:07:44,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:07:44,574 INFO L225 Difference]: With dead ends: 49849 [2020-12-22 08:07:44,575 INFO L226 Difference]: Without dead ends: 33335 [2020-12-22 08:07:44,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:07:44,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33335 states. [2020-12-22 08:07:47,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33335 to 33333. [2020-12-22 08:07:47,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33333 states. [2020-12-22 08:07:47,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33333 states to 33333 states and 49978 transitions. [2020-12-22 08:07:47,236 INFO L78 Accepts]: Start accepts. Automaton has 33333 states and 49978 transitions. Word has length 304 [2020-12-22 08:07:47,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:07:47,236 INFO L481 AbstractCegarLoop]: Abstraction has 33333 states and 49978 transitions. [2020-12-22 08:07:47,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:07:47,236 INFO L276 IsEmpty]: Start isEmpty. Operand 33333 states and 49978 transitions. [2020-12-22 08:07:47,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-12-22 08:07:47,300 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:07:47,301 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:07:47,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:07:47,301 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:07:47,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:07:47,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1981893267, now seen corresponding path program 1 times [2020-12-22 08:07:47,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:07:47,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366748772] [2020-12-22 08:07:47,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:07:47,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:07:47,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:07:47,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366748772] [2020-12-22 08:07:47,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:07:47,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:07:47,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455569625] [2020-12-22 08:07:47,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:07:47,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:07:47,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:07:47,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:07:47,977 INFO L87 Difference]: Start difference. First operand 33333 states and 49978 transitions. Second operand 5 states. [2020-12-22 08:07:51,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:07:51,205 INFO L93 Difference]: Finished difference Result 98284 states and 147148 transitions. [2020-12-22 08:07:51,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:07:51,206 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 304 [2020-12-22 08:07:51,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:07:51,370 INFO L225 Difference]: With dead ends: 98284 [2020-12-22 08:07:51,371 INFO L226 Difference]: Without dead ends: 65102 [2020-12-22 08:07:51,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:07:51,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65102 states. [2020-12-22 08:07:55,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65102 to 65100. [2020-12-22 08:07:55,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65100 states. [2020-12-22 08:07:55,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65100 states to 65100 states and 96816 transitions. [2020-12-22 08:07:55,168 INFO L78 Accepts]: Start accepts. Automaton has 65100 states and 96816 transitions. Word has length 304 [2020-12-22 08:07:55,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:07:55,168 INFO L481 AbstractCegarLoop]: Abstraction has 65100 states and 96816 transitions. [2020-12-22 08:07:55,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:07:55,168 INFO L276 IsEmpty]: Start isEmpty. Operand 65100 states and 96816 transitions. [2020-12-22 08:07:55,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-12-22 08:07:55,235 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:07:55,235 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:07:55,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:07:55,236 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:07:55,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:07:55,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1966552080, now seen corresponding path program 1 times [2020-12-22 08:07:55,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:07:55,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677475809] [2020-12-22 08:07:55,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:07:55,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:07:55,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:07:55,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677475809] [2020-12-22 08:07:55,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:07:55,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:07:55,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409184446] [2020-12-22 08:07:55,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:07:55,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:07:55,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:07:55,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:07:55,641 INFO L87 Difference]: Start difference. First operand 65100 states and 96816 transitions. Second operand 4 states. [2020-12-22 08:08:01,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:08:01,634 INFO L93 Difference]: Finished difference Result 192263 states and 285509 transitions. [2020-12-22 08:08:01,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:08:01,635 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 304 [2020-12-22 08:08:01,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:08:01,971 INFO L225 Difference]: With dead ends: 192263 [2020-12-22 08:08:01,972 INFO L226 Difference]: Without dead ends: 127445 [2020-12-22 08:08:02,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 08:08:02,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127445 states. [2020-12-22 08:08:09,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127445 to 127443. [2020-12-22 08:08:09,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127443 states. [2020-12-22 08:08:09,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127443 states to 127443 states and 188000 transitions. [2020-12-22 08:08:09,761 INFO L78 Accepts]: Start accepts. Automaton has 127443 states and 188000 transitions. Word has length 304 [2020-12-22 08:08:09,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:08:09,762 INFO L481 AbstractCegarLoop]: Abstraction has 127443 states and 188000 transitions. [2020-12-22 08:08:09,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:08:09,762 INFO L276 IsEmpty]: Start isEmpty. Operand 127443 states and 188000 transitions. [2020-12-22 08:08:09,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-12-22 08:08:09,883 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:08:09,884 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:08:09,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:08:09,885 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:08:09,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:08:09,885 INFO L82 PathProgramCache]: Analyzing trace with hash -928291857, now seen corresponding path program 1 times [2020-12-22 08:08:09,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:08:09,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102869289] [2020-12-22 08:08:09,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:08:09,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:08:10,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:08:10,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102869289] [2020-12-22 08:08:10,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:08:10,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:08:10,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018594402] [2020-12-22 08:08:10,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:08:10,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:08:10,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:08:10,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:08:10,451 INFO L87 Difference]: Start difference. First operand 127443 states and 188000 transitions. Second operand 3 states. [2020-12-22 08:08:21,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:08:21,605 INFO L93 Difference]: Finished difference Result 374888 states and 551748 transitions. [2020-12-22 08:08:21,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:08:21,606 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 306 [2020-12-22 08:08:21,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:08:22,448 INFO L225 Difference]: With dead ends: 374888 [2020-12-22 08:08:22,448 INFO L226 Difference]: Without dead ends: 249958 [2020-12-22 08:08:22,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:08:22,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249958 states. [2020-12-22 08:08:36,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249958 to 249956. [2020-12-22 08:08:36,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249956 states. [2020-12-22 08:08:37,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249956 states to 249956 states and 365842 transitions. [2020-12-22 08:08:37,141 INFO L78 Accepts]: Start accepts. Automaton has 249956 states and 365842 transitions. Word has length 306 [2020-12-22 08:08:37,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:08:37,142 INFO L481 AbstractCegarLoop]: Abstraction has 249956 states and 365842 transitions. [2020-12-22 08:08:37,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:08:37,142 INFO L276 IsEmpty]: Start isEmpty. Operand 249956 states and 365842 transitions. [2020-12-22 08:08:37,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-12-22 08:08:37,332 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:08:37,332 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:08:37,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:08:37,333 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:08:37,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:08:37,334 INFO L82 PathProgramCache]: Analyzing trace with hash -2074887948, now seen corresponding path program 1 times [2020-12-22 08:08:37,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:08:37,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270992697] [2020-12-22 08:08:37,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:08:37,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:08:38,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:08:38,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270992697] [2020-12-22 08:08:38,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:08:38,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:08:38,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664700982] [2020-12-22 08:08:38,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:08:38,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:08:38,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:08:38,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:08:38,030 INFO L87 Difference]: Start difference. First operand 249956 states and 365842 transitions. Second operand 3 states. [2020-12-22 08:09:00,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:09:00,833 INFO L93 Difference]: Finished difference Result 744684 states and 1088826 transitions. [2020-12-22 08:09:00,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:09:00,834 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 306 [2020-12-22 08:09:00,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:09:02,107 INFO L225 Difference]: With dead ends: 744684 [2020-12-22 08:09:02,107 INFO L226 Difference]: Without dead ends: 495824 [2020-12-22 08:09:02,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:09:02,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495824 states. [2020-12-22 08:09:20,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495824 to 250182. [2020-12-22 08:09:20,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250182 states.