/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.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:14:05,039 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:14:05,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:14:05,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:14:05,080 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:14:05,081 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:14:05,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:14:05,085 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:14:05,095 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:14:05,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:14:05,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:14:05,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:14:05,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:14:05,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:14:05,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:14:05,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:14:05,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:14:05,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:14:05,110 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:14:05,113 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:14:05,114 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:14:05,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:14:05,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:14:05,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:14:05,129 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:14:05,147 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:14:05,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:14:05,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:14:05,150 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:14:05,198 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:14:05,198 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:14:05,200 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:14:05,201 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:14:05,201 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:14:05,201 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:14:05,201 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:14:05,202 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:14:05,202 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:14:05,202 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:14:05,203 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:14:05,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:14:05,204 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:14:05,204 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:14:05,204 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:14:05,204 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:14:05,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:14:05,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:14:05,205 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:14:05,205 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:14:05,205 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:14:05,205 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:14:05,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:14:05,206 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:14:05,206 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:14:05,206 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:14:05,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:14:05,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:14:05,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:14:05,683 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:14:05,684 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:14:05,685 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 08:14:05,774 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87f1d42d6/b678f82d37914f0bac86e62e37b39ce7/FLAGa0d058849 [2020-12-22 08:14:06,679 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:14:06,680 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 08:14:06,721 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87f1d42d6/b678f82d37914f0bac86e62e37b39ce7/FLAGa0d058849 [2020-12-22 08:14:06,767 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87f1d42d6/b678f82d37914f0bac86e62e37b39ce7 [2020-12-22 08:14:06,770 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:14:06,772 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:14:06,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:14:06,774 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:14:06,778 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:14:06,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:14:06" (1/1) ... [2020-12-22 08:14:06,780 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@324327b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:14:06, skipping insertion in model container [2020-12-22 08:14:06,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:14:06" (1/1) ... [2020-12-22 08:14:06,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:14:06,960 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:14:08,002 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.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[49803,49816] [2020-12-22 08:14:08,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:14:08,350 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:14:08,886 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.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[49803,49816] [2020-12-22 08:14:09,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:14:09,259 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:14:09,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:14:09 WrapperNode [2020-12-22 08:14:09,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:14:09,263 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:14:09,263 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:14:09,263 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:14:09,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:14:09" (1/1) ... [2020-12-22 08:14:09,347 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:14:09" (1/1) ... [2020-12-22 08:14:09,485 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:14:09,487 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:14:09,487 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:14:09,487 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:14:09,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:14:09" (1/1) ... [2020-12-22 08:14:09,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:14:09" (1/1) ... [2020-12-22 08:14:09,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:14:09" (1/1) ... [2020-12-22 08:14:09,519 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:14:09" (1/1) ... [2020-12-22 08:14:09,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:14:09" (1/1) ... [2020-12-22 08:14:09,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:14:09" (1/1) ... [2020-12-22 08:14:09,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:14:09" (1/1) ... [2020-12-22 08:14:09,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:14:09,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:14:09,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:14:09,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:14:09,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:14:09" (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 08:14:09,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:14:09,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:14:09,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:14:09,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:14:15,346 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:14:15,347 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:14:15,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:14:15 BoogieIcfgContainer [2020-12-22 08:14:15,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:14:15,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:14:15,357 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:14:15,361 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:14:15,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:14:06" (1/3) ... [2020-12-22 08:14:15,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e18114a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:14:15, skipping insertion in model container [2020-12-22 08:14:15,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:14:09" (2/3) ... [2020-12-22 08:14:15,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e18114a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:14:15, skipping insertion in model container [2020-12-22 08:14:15,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:14:15" (3/3) ... [2020-12-22 08:14:15,368 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 08:14:15,377 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:14:15,385 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:14:15,405 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:14:15,461 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:14:15,461 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:14:15,461 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:14:15,461 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:14:15,462 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:14:15,462 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:14:15,462 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:14:15,462 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:14:15,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states. [2020-12-22 08:14:15,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2020-12-22 08:14:15,571 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:14:15,573 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:14:15,574 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:14:15,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:14:15,582 INFO L82 PathProgramCache]: Analyzing trace with hash 23371993, now seen corresponding path program 1 times [2020-12-22 08:14:15,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:14:15,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171076230] [2020-12-22 08:14:15,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:14:16,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:14:18,019 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 08:14:18,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171076230] [2020-12-22 08:14:18,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:14:18,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:14:18,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581750573] [2020-12-22 08:14:18,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:14:18,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:14:18,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:14:18,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:14:18,046 INFO L87 Difference]: Start difference. First operand 1335 states. Second operand 4 states. [2020-12-22 08:14:18,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:14:18,535 INFO L93 Difference]: Finished difference Result 3960 states and 7144 transitions. [2020-12-22 08:14:18,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:14:18,538 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 472 [2020-12-22 08:14:18,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:14:18,585 INFO L225 Difference]: With dead ends: 3960 [2020-12-22 08:14:18,585 INFO L226 Difference]: Without dead ends: 2632 [2020-12-22 08:14:18,596 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 08:14:18,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2632 states. [2020-12-22 08:14:18,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2632 to 2630. [2020-12-22 08:14:18,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2630 states. [2020-12-22 08:14:18,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2630 states to 2630 states and 4311 transitions. [2020-12-22 08:14:18,811 INFO L78 Accepts]: Start accepts. Automaton has 2630 states and 4311 transitions. Word has length 472 [2020-12-22 08:14:18,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:14:18,812 INFO L481 AbstractCegarLoop]: Abstraction has 2630 states and 4311 transitions. [2020-12-22 08:14:18,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:14:18,812 INFO L276 IsEmpty]: Start isEmpty. Operand 2630 states and 4311 transitions. [2020-12-22 08:14:18,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2020-12-22 08:14:18,827 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:14:18,828 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:14:18,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:14:18,829 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:14:18,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:14:18,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1999089122, now seen corresponding path program 1 times [2020-12-22 08:14:18,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:14:18,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778248345] [2020-12-22 08:14:18,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:14:18,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:14:19,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:14:19,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778248345] [2020-12-22 08:14:19,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:14:19,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:14:19,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624007191] [2020-12-22 08:14:19,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:14:19,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:14:19,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:14:19,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:14:19,798 INFO L87 Difference]: Start difference. First operand 2630 states and 4311 transitions. Second operand 3 states. [2020-12-22 08:14:20,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:14:20,331 INFO L93 Difference]: Finished difference Result 7628 states and 12462 transitions. [2020-12-22 08:14:20,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:14:20,332 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 474 [2020-12-22 08:14:20,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:14:20,370 INFO L225 Difference]: With dead ends: 7628 [2020-12-22 08:14:20,370 INFO L226 Difference]: Without dead ends: 5208 [2020-12-22 08:14:20,377 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 08:14:20,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5208 states. [2020-12-22 08:14:20,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5208 to 5206. [2020-12-22 08:14:20,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5206 states. [2020-12-22 08:14:20,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5206 states to 5206 states and 8505 transitions. [2020-12-22 08:14:20,721 INFO L78 Accepts]: Start accepts. Automaton has 5206 states and 8505 transitions. Word has length 474 [2020-12-22 08:14:20,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:14:20,723 INFO L481 AbstractCegarLoop]: Abstraction has 5206 states and 8505 transitions. [2020-12-22 08:14:20,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:14:20,723 INFO L276 IsEmpty]: Start isEmpty. Operand 5206 states and 8505 transitions. [2020-12-22 08:14:20,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2020-12-22 08:14:20,744 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:14:20,744 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:14:20,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:14:20,745 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:14:20,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:14:20,747 INFO L82 PathProgramCache]: Analyzing trace with hash 2140844980, now seen corresponding path program 1 times [2020-12-22 08:14:20,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:14:20,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730972646] [2020-12-22 08:14:20,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:14:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:14:21,034 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 08:14:21,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730972646] [2020-12-22 08:14:21,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:14:21,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:14:21,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665686258] [2020-12-22 08:14:21,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:14:21,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:14:21,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:14:21,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:14:21,038 INFO L87 Difference]: Start difference. First operand 5206 states and 8505 transitions. Second operand 3 states. [2020-12-22 08:14:21,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:14:21,524 INFO L93 Difference]: Finished difference Result 15529 states and 25355 transitions. [2020-12-22 08:14:21,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:14:21,525 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 475 [2020-12-22 08:14:21,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:14:21,580 INFO L225 Difference]: With dead ends: 15529 [2020-12-22 08:14:21,581 INFO L226 Difference]: Without dead ends: 10371 [2020-12-22 08:14:21,592 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 08:14:21,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10371 states. [2020-12-22 08:14:22,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10371 to 5253. [2020-12-22 08:14:22,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5253 states. [2020-12-22 08:14:22,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5253 states to 5253 states and 8579 transitions. [2020-12-22 08:14:22,040 INFO L78 Accepts]: Start accepts. Automaton has 5253 states and 8579 transitions. Word has length 475 [2020-12-22 08:14:22,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:14:22,049 INFO L481 AbstractCegarLoop]: Abstraction has 5253 states and 8579 transitions. [2020-12-22 08:14:22,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:14:22,049 INFO L276 IsEmpty]: Start isEmpty. Operand 5253 states and 8579 transitions. [2020-12-22 08:14:22,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2020-12-22 08:14:22,072 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:14:22,073 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:14:22,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:14:22,073 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:14:22,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:14:22,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1673348647, now seen corresponding path program 1 times [2020-12-22 08:14:22,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:14:22,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397971673] [2020-12-22 08:14:22,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:14:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:14:22,698 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 08:14:22,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397971673] [2020-12-22 08:14:22,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:14:22,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:14:22,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863259766] [2020-12-22 08:14:22,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:14:22,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:14:22,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:14:22,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:14:22,702 INFO L87 Difference]: Start difference. First operand 5253 states and 8579 transitions. Second operand 3 states. [2020-12-22 08:14:23,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:14:23,410 INFO L93 Difference]: Finished difference Result 15108 states and 24576 transitions. [2020-12-22 08:14:23,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:14:23,411 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 476 [2020-12-22 08:14:23,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:14:23,480 INFO L225 Difference]: With dead ends: 15108 [2020-12-22 08:14:23,481 INFO L226 Difference]: Without dead ends: 10250 [2020-12-22 08:14:23,494 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 08:14:23,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10250 states. [2020-12-22 08:14:24,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10250 to 10248. [2020-12-22 08:14:24,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10248 states. [2020-12-22 08:14:24,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10248 states to 10248 states and 16649 transitions. [2020-12-22 08:14:24,139 INFO L78 Accepts]: Start accepts. Automaton has 10248 states and 16649 transitions. Word has length 476 [2020-12-22 08:14:24,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:14:24,139 INFO L481 AbstractCegarLoop]: Abstraction has 10248 states and 16649 transitions. [2020-12-22 08:14:24,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:14:24,140 INFO L276 IsEmpty]: Start isEmpty. Operand 10248 states and 16649 transitions. [2020-12-22 08:14:24,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2020-12-22 08:14:24,170 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:14:24,170 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:14:24,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:14:24,171 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:14:24,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:14:24,172 INFO L82 PathProgramCache]: Analyzing trace with hash -999115170, now seen corresponding path program 1 times [2020-12-22 08:14:24,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:14:24,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934024542] [2020-12-22 08:14:24,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:14:24,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:14:24,443 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 08:14:24,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934024542] [2020-12-22 08:14:24,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:14:24,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:14:24,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134827373] [2020-12-22 08:14:24,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:14:24,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:14:24,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:14:24,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:14:24,447 INFO L87 Difference]: Start difference. First operand 10248 states and 16649 transitions. Second operand 3 states. [2020-12-22 08:14:25,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:14:25,463 INFO L93 Difference]: Finished difference Result 30496 states and 49510 transitions. [2020-12-22 08:14:25,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:14:25,464 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 476 [2020-12-22 08:14:25,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:14:25,516 INFO L225 Difference]: With dead ends: 30496 [2020-12-22 08:14:25,517 INFO L226 Difference]: Without dead ends: 20388 [2020-12-22 08:14:25,532 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 08:14:25,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20388 states. [2020-12-22 08:14:26,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20388 to 10346. [2020-12-22 08:14:26,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10346 states. [2020-12-22 08:14:26,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10346 states to 10346 states and 16800 transitions. [2020-12-22 08:14:26,312 INFO L78 Accepts]: Start accepts. Automaton has 10346 states and 16800 transitions. Word has length 476 [2020-12-22 08:14:26,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:14:26,312 INFO L481 AbstractCegarLoop]: Abstraction has 10346 states and 16800 transitions. [2020-12-22 08:14:26,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:14:26,313 INFO L276 IsEmpty]: Start isEmpty. Operand 10346 states and 16800 transitions. [2020-12-22 08:14:26,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2020-12-22 08:14:26,335 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:14:26,335 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:14:26,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:14:26,336 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:14:26,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:14:26,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1130908443, now seen corresponding path program 1 times [2020-12-22 08:14:26,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:14:26,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445851866] [2020-12-22 08:14:26,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:14:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:14:26,726 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 08:14:26,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445851866] [2020-12-22 08:14:26,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:14:26,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:14:26,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504573632] [2020-12-22 08:14:26,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:14:26,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:14:26,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:14:26,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:14:26,729 INFO L87 Difference]: Start difference. First operand 10346 states and 16800 transitions. Second operand 3 states. [2020-12-22 08:14:27,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:14:27,988 INFO L93 Difference]: Finished difference Result 30631 states and 49691 transitions. [2020-12-22 08:14:27,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:14:27,989 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 477 [2020-12-22 08:14:27,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:14:28,046 INFO L225 Difference]: With dead ends: 30631 [2020-12-22 08:14:28,046 INFO L226 Difference]: Without dead ends: 20505 [2020-12-22 08:14:28,068 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 08:14:28,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20505 states. [2020-12-22 08:14:28,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20505 to 10463. [2020-12-22 08:14:28,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10463 states. [2020-12-22 08:14:28,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10463 states to 10463 states and 16946 transitions. [2020-12-22 08:14:28,908 INFO L78 Accepts]: Start accepts. Automaton has 10463 states and 16946 transitions. Word has length 477 [2020-12-22 08:14:28,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:14:28,908 INFO L481 AbstractCegarLoop]: Abstraction has 10463 states and 16946 transitions. [2020-12-22 08:14:28,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:14:28,908 INFO L276 IsEmpty]: Start isEmpty. Operand 10463 states and 16946 transitions. [2020-12-22 08:14:28,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2020-12-22 08:14:28,932 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:14:28,932 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:14:28,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:14:28,933 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:14:28,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:14:28,939 INFO L82 PathProgramCache]: Analyzing trace with hash -437055052, now seen corresponding path program 1 times [2020-12-22 08:14:28,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:14:28,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631444919] [2020-12-22 08:14:28,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:14:29,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:14:29,447 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 08:14:29,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631444919] [2020-12-22 08:14:29,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:14:29,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:14:29,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064131490] [2020-12-22 08:14:29,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:14:29,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:14:29,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:14:29,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:14:29,450 INFO L87 Difference]: Start difference. First operand 10463 states and 16946 transitions. Second operand 3 states. [2020-12-22 08:14:30,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:14:30,583 INFO L93 Difference]: Finished difference Result 29714 states and 47993 transitions. [2020-12-22 08:14:30,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:14:30,584 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 478 [2020-12-22 08:14:30,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:14:30,630 INFO L225 Difference]: With dead ends: 29714 [2020-12-22 08:14:30,630 INFO L226 Difference]: Without dead ends: 20216 [2020-12-22 08:14:30,650 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 08:14:30,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20216 states. [2020-12-22 08:14:31,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20216 to 20214. [2020-12-22 08:14:31,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20214 states. [2020-12-22 08:14:32,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20214 states to 20214 states and 32583 transitions. [2020-12-22 08:14:32,040 INFO L78 Accepts]: Start accepts. Automaton has 20214 states and 32583 transitions. Word has length 478 [2020-12-22 08:14:32,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:14:32,041 INFO L481 AbstractCegarLoop]: Abstraction has 20214 states and 32583 transitions. [2020-12-22 08:14:32,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:14:32,041 INFO L276 IsEmpty]: Start isEmpty. Operand 20214 states and 32583 transitions. [2020-12-22 08:14:32,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2020-12-22 08:14:32,104 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:14:32,104 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:14:32,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:14:32,105 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:14:32,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:14:32,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1224316527, now seen corresponding path program 1 times [2020-12-22 08:14:32,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:14:32,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858315427] [2020-12-22 08:14:32,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:14:32,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:14:33,557 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 08:14:33,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858315427] [2020-12-22 08:14:33,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:14:33,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:14:33,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610056031] [2020-12-22 08:14:33,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:14:33,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:14:33,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:14:33,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:14:33,561 INFO L87 Difference]: Start difference. First operand 20214 states and 32583 transitions. Second operand 5 states. [2020-12-22 08:14:36,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:14:36,106 INFO L93 Difference]: Finished difference Result 59218 states and 95433 transitions. [2020-12-22 08:14:36,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:14:36,107 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 478 [2020-12-22 08:14:36,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:14:36,177 INFO L225 Difference]: With dead ends: 59218 [2020-12-22 08:14:36,177 INFO L226 Difference]: Without dead ends: 39218 [2020-12-22 08:14:36,211 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 08:14:36,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39218 states. [2020-12-22 08:14:38,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39218 to 39216. [2020-12-22 08:14:38,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39216 states. [2020-12-22 08:14:38,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39216 states to 39216 states and 62902 transitions. [2020-12-22 08:14:38,358 INFO L78 Accepts]: Start accepts. Automaton has 39216 states and 62902 transitions. Word has length 478 [2020-12-22 08:14:38,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:14:38,359 INFO L481 AbstractCegarLoop]: Abstraction has 39216 states and 62902 transitions. [2020-12-22 08:14:38,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:14:38,359 INFO L276 IsEmpty]: Start isEmpty. Operand 39216 states and 62902 transitions. [2020-12-22 08:14:38,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2020-12-22 08:14:38,407 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:14:38,407 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:14:38,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:14:38,408 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:14:38,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:14:38,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1171418718, now seen corresponding path program 1 times [2020-12-22 08:14:38,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:14:38,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231593268] [2020-12-22 08:14:38,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:14:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:14:39,054 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 08:14:39,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231593268] [2020-12-22 08:14:39,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:14:39,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:14:39,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114715155] [2020-12-22 08:14:39,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:14:39,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:14:39,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:14:39,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:14:39,057 INFO L87 Difference]: Start difference. First operand 39216 states and 62902 transitions. Second operand 3 states. [2020-12-22 08:14:42,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:14:42,403 INFO L93 Difference]: Finished difference Result 114986 states and 184269 transitions. [2020-12-22 08:14:42,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:14:42,404 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 480 [2020-12-22 08:14:42,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:14:42,544 INFO L225 Difference]: With dead ends: 114986 [2020-12-22 08:14:42,545 INFO L226 Difference]: Without dead ends: 77308 [2020-12-22 08:14:42,580 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 08:14:42,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77308 states. [2020-12-22 08:14:46,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77308 to 77306. [2020-12-22 08:14:46,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77306 states. [2020-12-22 08:14:46,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77306 states to 77306 states and 123524 transitions. [2020-12-22 08:14:46,537 INFO L78 Accepts]: Start accepts. Automaton has 77306 states and 123524 transitions. Word has length 480 [2020-12-22 08:14:46,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:14:46,538 INFO L481 AbstractCegarLoop]: Abstraction has 77306 states and 123524 transitions. [2020-12-22 08:14:46,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:14:46,538 INFO L276 IsEmpty]: Start isEmpty. Operand 77306 states and 123524 transitions. [2020-12-22 08:14:46,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2020-12-22 08:14:46,648 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:14:46,649 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:14:46,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:14:46,649 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:14:46,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:14:46,650 INFO L82 PathProgramCache]: Analyzing trace with hash -2058241251, now seen corresponding path program 1 times [2020-12-22 08:14:46,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:14:46,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245532244] [2020-12-22 08:14:46,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:14:46,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:14:47,498 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 08:14:47,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245532244] [2020-12-22 08:14:47,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:14:47,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:14:47,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801770846] [2020-12-22 08:14:47,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:14:47,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:14:47,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:14:47,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:14:47,500 INFO L87 Difference]: Start difference. First operand 77306 states and 123524 transitions. Second operand 3 states. [2020-12-22 08:14:54,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:14:54,438 INFO L93 Difference]: Finished difference Result 225381 states and 359325 transitions. [2020-12-22 08:14:54,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:14:54,439 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 482 [2020-12-22 08:14:54,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:14:54,693 INFO L225 Difference]: With dead ends: 225381 [2020-12-22 08:14:54,693 INFO L226 Difference]: Without dead ends: 151779 [2020-12-22 08:14:54,778 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 08:14:55,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151779 states. [2020-12-22 08:15:02,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151779 to 151777. [2020-12-22 08:15:02,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151777 states. [2020-12-22 08:15:03,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151777 states to 151777 states and 241380 transitions. [2020-12-22 08:15:03,018 INFO L78 Accepts]: Start accepts. Automaton has 151777 states and 241380 transitions. Word has length 482 [2020-12-22 08:15:03,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:03,018 INFO L481 AbstractCegarLoop]: Abstraction has 151777 states and 241380 transitions. [2020-12-22 08:15:03,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:15:03,019 INFO L276 IsEmpty]: Start isEmpty. Operand 151777 states and 241380 transitions. [2020-12-22 08:15:03,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2020-12-22 08:15:03,497 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:03,498 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:15:03,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:15:03,498 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:03,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:03,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1004313030, now seen corresponding path program 1 times [2020-12-22 08:15:03,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:03,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002821727] [2020-12-22 08:15:03,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:04,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:05,072 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 08:15:05,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002821727] [2020-12-22 08:15:05,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:05,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:15:05,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571245591] [2020-12-22 08:15:05,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:15:05,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:05,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:15:05,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:15:05,076 INFO L87 Difference]: Start difference. First operand 151777 states and 241380 transitions. Second operand 5 states. [2020-12-22 08:15:19,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:19,303 INFO L93 Difference]: Finished difference Result 450807 states and 716900 transitions. [2020-12-22 08:15:19,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:15:19,303 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 482 [2020-12-22 08:15:19,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:15:20,008 INFO L225 Difference]: With dead ends: 450807 [2020-12-22 08:15:20,008 INFO L226 Difference]: Without dead ends: 299414 [2020-12-22 08:15:20,172 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 08:15:20,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299414 states. [2020-12-22 08:15:35,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299414 to 299412. [2020-12-22 08:15:35,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299412 states. [2020-12-22 08:15:36,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299412 states to 299412 states and 474010 transitions. [2020-12-22 08:15:36,784 INFO L78 Accepts]: Start accepts. Automaton has 299412 states and 474010 transitions. Word has length 482 [2020-12-22 08:15:36,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:36,785 INFO L481 AbstractCegarLoop]: Abstraction has 299412 states and 474010 transitions. [2020-12-22 08:15:36,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:15:36,785 INFO L276 IsEmpty]: Start isEmpty. Operand 299412 states and 474010 transitions. [2020-12-22 08:15:37,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2020-12-22 08:15:37,099 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:37,099 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:15:37,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:15:37,100 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:37,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:37,100 INFO L82 PathProgramCache]: Analyzing trace with hash 426871741, now seen corresponding path program 1 times [2020-12-22 08:15:37,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:37,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221000521] [2020-12-22 08:15:37,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:38,512 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 08:15:38,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221000521] [2020-12-22 08:15:38,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:38,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:15:38,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557437207] [2020-12-22 08:15:38,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:15:38,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:38,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:15:38,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:15:38,515 INFO L87 Difference]: Start difference. First operand 299412 states and 474010 transitions. Second operand 5 states.