/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.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:11:01,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:11:01,028 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:11:01,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:11:01,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:11:01,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:11:01,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:11:01,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:11:01,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:11:01,094 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:11:01,098 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:11:01,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:11:01,100 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:11:01,104 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:11:01,106 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:11:01,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:11:01,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:11:01,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:11:01,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:11:01,122 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:11:01,126 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:11:01,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:11:01,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:11:01,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:11:01,138 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:11:01,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:11:01,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:11:01,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:11:01,159 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:11:01,214 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:11:01,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:11:01,219 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:11:01,220 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:11:01,220 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:11:01,220 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:11:01,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:11:01,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:11:01,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:11:01,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:11:01,222 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:11:01,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:11:01,222 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:11:01,223 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:11:01,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:11:01,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:11:01,223 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:11:01,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:11:01,224 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:11:01,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:11:01,224 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:11:01,224 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:11:01,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:11:01,225 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:11:01,225 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:11:01,225 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:11:01,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:11:01,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:11:01,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:11:01,679 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:11:01,679 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:11:01,680 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 08:11:01,765 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d456898a7/23fd9036ae9e44968e6046d52457e19b/FLAGa45f704c2 [2020-12-22 08:11:02,525 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:11:02,526 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 08:11:02,542 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d456898a7/23fd9036ae9e44968e6046d52457e19b/FLAGa45f704c2 [2020-12-22 08:11:02,762 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d456898a7/23fd9036ae9e44968e6046d52457e19b [2020-12-22 08:11:02,766 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:11:02,768 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:11:02,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:11:02,770 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:11:02,773 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:11:02,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:11:02" (1/1) ... [2020-12-22 08:11:02,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14e1e677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:11:02, skipping insertion in model container [2020-12-22 08:11:02,776 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:11:02" (1/1) ... [2020-12-22 08:11:02,784 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:11:02,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:11:03,500 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.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[30939,30952] [2020-12-22 08:11:03,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:11:03,799 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:11:04,049 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.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[30939,30952] [2020-12-22 08:11:04,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:11:04,200 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:11:04,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:11:04 WrapperNode [2020-12-22 08:11:04,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:11:04,202 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:11:04,202 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:11:04,202 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:11:04,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:11:04" (1/1) ... [2020-12-22 08:11:04,237 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:11:04" (1/1) ... [2020-12-22 08:11:04,361 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:11:04,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:11:04,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:11:04,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:11:04,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:11:04" (1/1) ... [2020-12-22 08:11:04,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:11:04" (1/1) ... [2020-12-22 08:11:04,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:11:04" (1/1) ... [2020-12-22 08:11:04,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:11:04" (1/1) ... [2020-12-22 08:11:04,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:11:04" (1/1) ... [2020-12-22 08:11:04,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:11:04" (1/1) ... [2020-12-22 08:11:04,499 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:11:04" (1/1) ... [2020-12-22 08:11:04,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:11:04,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:11:04,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:11:04,520 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:11:04,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:11:04" (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 08:11:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:11:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:11:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:11:04,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:11:06,776 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:11:06,777 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:11:06,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:11:06 BoogieIcfgContainer [2020-12-22 08:11:06,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:11:06,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:11:06,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:11:06,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:11:06,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:11:02" (1/3) ... [2020-12-22 08:11:06,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@146d30a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:11:06, skipping insertion in model container [2020-12-22 08:11:06,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:11:04" (2/3) ... [2020-12-22 08:11:06,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@146d30a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:11:06, skipping insertion in model container [2020-12-22 08:11:06,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:11:06" (3/3) ... [2020-12-22 08:11:06,789 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 08:11:06,795 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:11:06,801 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:11:06,820 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:11:06,854 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:11:06,854 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:11:06,854 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:11:06,854 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:11:06,855 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:11:06,855 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:11:06,855 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:11:06,855 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:11:06,885 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states. [2020-12-22 08:11:06,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-12-22 08:11:06,914 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:11:06,915 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 08:11:06,916 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:11:06,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:11:06,922 INFO L82 PathProgramCache]: Analyzing trace with hash -11509125, now seen corresponding path program 1 times [2020-12-22 08:11:06,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:11:06,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192779898] [2020-12-22 08:11:06,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:11:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:11:07,980 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 08:11:07,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192779898] [2020-12-22 08:11:07,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:11:07,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:11:07,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924798605] [2020-12-22 08:11:07,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:11:07,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:11:08,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:11:08,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:11:08,007 INFO L87 Difference]: Start difference. First operand 716 states. Second operand 3 states. [2020-12-22 08:11:08,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:11:08,253 INFO L93 Difference]: Finished difference Result 1340 states and 2378 transitions. [2020-12-22 08:11:08,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:11:08,255 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 306 [2020-12-22 08:11:08,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:11:08,310 INFO L225 Difference]: With dead ends: 1340 [2020-12-22 08:11:08,311 INFO L226 Difference]: Without dead ends: 1149 [2020-12-22 08:11:08,317 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 08:11:08,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2020-12-22 08:11:08,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1147. [2020-12-22 08:11:08,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1147 states. [2020-12-22 08:11:08,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1776 transitions. [2020-12-22 08:11:08,468 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1776 transitions. Word has length 306 [2020-12-22 08:11:08,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:11:08,473 INFO L481 AbstractCegarLoop]: Abstraction has 1147 states and 1776 transitions. [2020-12-22 08:11:08,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:11:08,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1776 transitions. [2020-12-22 08:11:08,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-12-22 08:11:08,486 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:11:08,487 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 08:11:08,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:11:08,488 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:11:08,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:11:08,490 INFO L82 PathProgramCache]: Analyzing trace with hash 9983315, now seen corresponding path program 1 times [2020-12-22 08:11:08,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:11:08,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484631762] [2020-12-22 08:11:08,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:11:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:11:09,437 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 08:11:09,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484631762] [2020-12-22 08:11:09,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:11:09,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:11:09,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389178894] [2020-12-22 08:11:09,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:11:09,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:11:09,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:11:09,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:11:09,446 INFO L87 Difference]: Start difference. First operand 1147 states and 1776 transitions. Second operand 4 states. [2020-12-22 08:11:09,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:11:09,775 INFO L93 Difference]: Finished difference Result 3393 states and 5247 transitions. [2020-12-22 08:11:09,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:11:09,776 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 306 [2020-12-22 08:11:09,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:11:09,792 INFO L225 Difference]: With dead ends: 3393 [2020-12-22 08:11:09,792 INFO L226 Difference]: Without dead ends: 2257 [2020-12-22 08:11:09,801 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 08:11:09,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2020-12-22 08:11:09,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2255. [2020-12-22 08:11:09,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2255 states. [2020-12-22 08:11:09,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 3470 transitions. [2020-12-22 08:11:09,941 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 3470 transitions. Word has length 306 [2020-12-22 08:11:09,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:11:09,942 INFO L481 AbstractCegarLoop]: Abstraction has 2255 states and 3470 transitions. [2020-12-22 08:11:09,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:11:09,942 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 3470 transitions. [2020-12-22 08:11:09,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-12-22 08:11:09,951 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:11:09,952 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] [2020-12-22 08:11:09,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:11:09,953 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:11:09,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:11:09,957 INFO L82 PathProgramCache]: Analyzing trace with hash 744703452, now seen corresponding path program 1 times [2020-12-22 08:11:09,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:11:09,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995546939] [2020-12-22 08:11:09,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:11:10,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:11:10,304 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 08:11:10,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995546939] [2020-12-22 08:11:10,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:11:10,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:11:10,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412385406] [2020-12-22 08:11:10,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:11:10,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:11:10,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:11:10,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:11:10,309 INFO L87 Difference]: Start difference. First operand 2255 states and 3470 transitions. Second operand 3 states. [2020-12-22 08:11:10,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:11:10,597 INFO L93 Difference]: Finished difference Result 6558 states and 10054 transitions. [2020-12-22 08:11:10,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:11:10,597 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 308 [2020-12-22 08:11:10,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:11:10,622 INFO L225 Difference]: With dead ends: 6558 [2020-12-22 08:11:10,622 INFO L226 Difference]: Without dead ends: 4428 [2020-12-22 08:11:10,627 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 08:11:10,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4428 states. [2020-12-22 08:11:10,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4428 to 4426. [2020-12-22 08:11:10,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4426 states. [2020-12-22 08:11:10,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4426 states to 4426 states and 6771 transitions. [2020-12-22 08:11:10,856 INFO L78 Accepts]: Start accepts. Automaton has 4426 states and 6771 transitions. Word has length 308 [2020-12-22 08:11:10,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:11:10,862 INFO L481 AbstractCegarLoop]: Abstraction has 4426 states and 6771 transitions. [2020-12-22 08:11:10,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:11:10,863 INFO L276 IsEmpty]: Start isEmpty. Operand 4426 states and 6771 transitions. [2020-12-22 08:11:10,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-12-22 08:11:10,874 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:11:10,875 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] [2020-12-22 08:11:10,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:11:10,875 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:11:10,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:11:10,876 INFO L82 PathProgramCache]: Analyzing trace with hash -40112607, now seen corresponding path program 1 times [2020-12-22 08:11:10,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:11:10,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437484696] [2020-12-22 08:11:10,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:11:10,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:11:11,087 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 08:11:11,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437484696] [2020-12-22 08:11:11,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:11:11,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:11:11,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348547742] [2020-12-22 08:11:11,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:11:11,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:11:11,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:11:11,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:11:11,093 INFO L87 Difference]: Start difference. First operand 4426 states and 6771 transitions. Second operand 3 states. [2020-12-22 08:11:11,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:11:11,513 INFO L93 Difference]: Finished difference Result 13211 states and 20197 transitions. [2020-12-22 08:11:11,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:11:11,514 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 308 [2020-12-22 08:11:11,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:11:11,600 INFO L225 Difference]: With dead ends: 13211 [2020-12-22 08:11:11,600 INFO L226 Difference]: Without dead ends: 8823 [2020-12-22 08:11:11,611 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 08:11:11,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8823 states. [2020-12-22 08:11:11,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8823 to 4445. [2020-12-22 08:11:11,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4445 states. [2020-12-22 08:11:11,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4445 states to 4445 states and 6799 transitions. [2020-12-22 08:11:11,957 INFO L78 Accepts]: Start accepts. Automaton has 4445 states and 6799 transitions. Word has length 308 [2020-12-22 08:11:11,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:11:11,958 INFO L481 AbstractCegarLoop]: Abstraction has 4445 states and 6799 transitions. [2020-12-22 08:11:11,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:11:11,958 INFO L276 IsEmpty]: Start isEmpty. Operand 4445 states and 6799 transitions. [2020-12-22 08:11:11,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-12-22 08:11:11,969 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:11:11,969 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] [2020-12-22 08:11:11,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:11:11,970 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:11:11,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:11:11,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1460416733, now seen corresponding path program 1 times [2020-12-22 08:11:11,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:11:11,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508830103] [2020-12-22 08:11:11,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:11:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:11:12,167 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 08:11:12,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508830103] [2020-12-22 08:11:12,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:11:12,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:11:12,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216544114] [2020-12-22 08:11:12,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:11:12,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:11:12,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:11:12,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:11:12,173 INFO L87 Difference]: Start difference. First operand 4445 states and 6799 transitions. Second operand 3 states. [2020-12-22 08:11:12,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:11:12,668 INFO L93 Difference]: Finished difference Result 13230 states and 20218 transitions. [2020-12-22 08:11:12,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:11:12,669 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 309 [2020-12-22 08:11:12,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:11:12,713 INFO L225 Difference]: With dead ends: 13230 [2020-12-22 08:11:12,714 INFO L226 Difference]: Without dead ends: 8841 [2020-12-22 08:11:12,723 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 08:11:12,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8841 states. [2020-12-22 08:11:13,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8841 to 4463. [2020-12-22 08:11:13,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4463 states. [2020-12-22 08:11:13,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4463 states to 4463 states and 6820 transitions. [2020-12-22 08:11:13,115 INFO L78 Accepts]: Start accepts. Automaton has 4463 states and 6820 transitions. Word has length 309 [2020-12-22 08:11:13,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:11:13,115 INFO L481 AbstractCegarLoop]: Abstraction has 4463 states and 6820 transitions. [2020-12-22 08:11:13,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:11:13,116 INFO L276 IsEmpty]: Start isEmpty. Operand 4463 states and 6820 transitions. [2020-12-22 08:11:13,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-12-22 08:11:13,130 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:11:13,130 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] [2020-12-22 08:11:13,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:11:13,131 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:11:13,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:11:13,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1746264407, now seen corresponding path program 1 times [2020-12-22 08:11:13,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:11:13,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831058390] [2020-12-22 08:11:13,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:11:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:11:13,464 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 08:11:13,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831058390] [2020-12-22 08:11:13,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:11:13,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:11:13,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457946922] [2020-12-22 08:11:13,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:11:13,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:11:13,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:11:13,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:11:13,468 INFO L87 Difference]: Start difference. First operand 4463 states and 6820 transitions. Second operand 3 states. [2020-12-22 08:11:14,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:11:14,090 INFO L93 Difference]: Finished difference Result 12890 states and 19621 transitions. [2020-12-22 08:11:14,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:11:14,092 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 310 [2020-12-22 08:11:14,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:11:14,126 INFO L225 Difference]: With dead ends: 12890 [2020-12-22 08:11:14,126 INFO L226 Difference]: Without dead ends: 8668 [2020-12-22 08:11:14,136 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 08:11:14,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8668 states. [2020-12-22 08:11:14,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8668 to 8666. [2020-12-22 08:11:14,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8666 states. [2020-12-22 08:11:14,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8666 states to 8666 states and 13144 transitions. [2020-12-22 08:11:14,738 INFO L78 Accepts]: Start accepts. Automaton has 8666 states and 13144 transitions. Word has length 310 [2020-12-22 08:11:14,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:11:14,738 INFO L481 AbstractCegarLoop]: Abstraction has 8666 states and 13144 transitions. [2020-12-22 08:11:14,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:11:14,739 INFO L276 IsEmpty]: Start isEmpty. Operand 8666 states and 13144 transitions. [2020-12-22 08:11:14,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-12-22 08:11:14,758 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:11:14,759 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] [2020-12-22 08:11:14,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:11:14,759 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:11:14,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:11:14,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1678255860, now seen corresponding path program 1 times [2020-12-22 08:11:14,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:11:14,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308401499] [2020-12-22 08:11:14,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:11:14,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:11:15,314 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 08:11:15,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308401499] [2020-12-22 08:11:15,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:11:15,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:11:15,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511939908] [2020-12-22 08:11:15,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:11:15,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:11:15,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:11:15,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:11:15,317 INFO L87 Difference]: Start difference. First operand 8666 states and 13144 transitions. Second operand 5 states. [2020-12-22 08:11:16,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:11:16,400 INFO L93 Difference]: Finished difference Result 25452 states and 38529 transitions. [2020-12-22 08:11:16,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:11:16,400 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 310 [2020-12-22 08:11:16,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:11:16,439 INFO L225 Difference]: With dead ends: 25452 [2020-12-22 08:11:16,439 INFO L226 Difference]: Without dead ends: 16841 [2020-12-22 08:11:16,454 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 08:11:16,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16841 states. [2020-12-22 08:11:17,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16841 to 16839. [2020-12-22 08:11:17,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16839 states. [2020-12-22 08:11:17,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16839 states to 16839 states and 25329 transitions. [2020-12-22 08:11:17,851 INFO L78 Accepts]: Start accepts. Automaton has 16839 states and 25329 transitions. Word has length 310 [2020-12-22 08:11:17,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:11:17,852 INFO L481 AbstractCegarLoop]: Abstraction has 16839 states and 25329 transitions. [2020-12-22 08:11:17,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:11:17,852 INFO L276 IsEmpty]: Start isEmpty. Operand 16839 states and 25329 transitions. [2020-12-22 08:11:17,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-12-22 08:11:17,896 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:11:17,896 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] [2020-12-22 08:11:17,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:11:17,897 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:11:17,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:11:17,898 INFO L82 PathProgramCache]: Analyzing trace with hash -866699209, now seen corresponding path program 1 times [2020-12-22 08:11:17,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:11:17,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252268449] [2020-12-22 08:11:17,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:11:17,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:11:18,244 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 08:11:18,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252268449] [2020-12-22 08:11:18,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:11:18,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:11:18,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809101385] [2020-12-22 08:11:18,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:11:18,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:11:18,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:11:18,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:11:18,247 INFO L87 Difference]: Start difference. First operand 16839 states and 25329 transitions. Second operand 3 states. [2020-12-22 08:11:19,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:11:19,730 INFO L93 Difference]: Finished difference Result 49273 states and 73930 transitions. [2020-12-22 08:11:19,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:11:19,731 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 312 [2020-12-22 08:11:19,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:11:19,817 INFO L225 Difference]: With dead ends: 49273 [2020-12-22 08:11:19,817 INFO L226 Difference]: Without dead ends: 32951 [2020-12-22 08:11:19,844 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 08:11:19,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32951 states. [2020-12-22 08:11:22,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32951 to 32949. [2020-12-22 08:11:22,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32949 states. [2020-12-22 08:11:22,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32949 states to 32949 states and 49210 transitions. [2020-12-22 08:11:22,112 INFO L78 Accepts]: Start accepts. Automaton has 32949 states and 49210 transitions. Word has length 312 [2020-12-22 08:11:22,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:11:22,113 INFO L481 AbstractCegarLoop]: Abstraction has 32949 states and 49210 transitions. [2020-12-22 08:11:22,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:11:22,113 INFO L276 IsEmpty]: Start isEmpty. Operand 32949 states and 49210 transitions. [2020-12-22 08:11:22,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-12-22 08:11:22,170 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:11:22,171 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] [2020-12-22 08:11:22,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:11:22,171 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:11:22,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:11:22,174 INFO L82 PathProgramCache]: Analyzing trace with hash -2006433516, now seen corresponding path program 1 times [2020-12-22 08:11:22,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:11:22,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743920978] [2020-12-22 08:11:22,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:11:22,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:11:22,766 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 08:11:22,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743920978] [2020-12-22 08:11:22,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:11:22,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:11:22,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655819327] [2020-12-22 08:11:22,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:11:22,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:11:22,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:11:22,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:11:22,770 INFO L87 Difference]: Start difference. First operand 32949 states and 49210 transitions. Second operand 5 states. [2020-12-22 08:11:25,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:11:25,697 INFO L93 Difference]: Finished difference Result 97388 states and 145228 transitions. [2020-12-22 08:11:25,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:11:25,698 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 312 [2020-12-22 08:11:25,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:11:25,849 INFO L225 Difference]: With dead ends: 97388 [2020-12-22 08:11:25,850 INFO L226 Difference]: Without dead ends: 64590 [2020-12-22 08:11:25,898 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 08:11:25,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64590 states. [2020-12-22 08:11:29,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64590 to 64588. [2020-12-22 08:11:29,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64588 states. [2020-12-22 08:11:29,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64588 states to 64588 states and 95728 transitions. [2020-12-22 08:11:29,183 INFO L78 Accepts]: Start accepts. Automaton has 64588 states and 95728 transitions. Word has length 312 [2020-12-22 08:11:29,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:11:29,183 INFO L481 AbstractCegarLoop]: Abstraction has 64588 states and 95728 transitions. [2020-12-22 08:11:29,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:11:29,183 INFO L276 IsEmpty]: Start isEmpty. Operand 64588 states and 95728 transitions. [2020-12-22 08:11:29,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-12-22 08:11:29,580 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:11:29,582 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] [2020-12-22 08:11:29,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:11:29,583 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:11:29,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:11:29,583 INFO L82 PathProgramCache]: Analyzing trace with hash -807196812, now seen corresponding path program 1 times [2020-12-22 08:11:29,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:11:29,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208268336] [2020-12-22 08:11:29,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:11:29,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:11:30,189 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 08:11:30,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208268336] [2020-12-22 08:11:30,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:11:30,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:11:30,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35414886] [2020-12-22 08:11:30,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:11:30,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:11:30,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:11:30,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:11:30,192 INFO L87 Difference]: Start difference. First operand 64588 states and 95728 transitions. Second operand 4 states. [2020-12-22 08:11:35,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:11:35,861 INFO L93 Difference]: Finished difference Result 190727 states and 282245 transitions. [2020-12-22 08:11:35,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:11:35,862 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 312 [2020-12-22 08:11:35,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:11:36,165 INFO L225 Difference]: With dead ends: 190727 [2020-12-22 08:11:36,166 INFO L226 Difference]: Without dead ends: 126421 [2020-12-22 08:11:36,262 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 08:11:36,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126421 states. [2020-12-22 08:11:42,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126421 to 126419. [2020-12-22 08:11:42,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126419 states. [2020-12-22 08:11:43,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126419 states to 126419 states and 185824 transitions. [2020-12-22 08:11:43,422 INFO L78 Accepts]: Start accepts. Automaton has 126419 states and 185824 transitions. Word has length 312 [2020-12-22 08:11:43,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:11:43,425 INFO L481 AbstractCegarLoop]: Abstraction has 126419 states and 185824 transitions. [2020-12-22 08:11:43,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:11:43,425 INFO L276 IsEmpty]: Start isEmpty. Operand 126419 states and 185824 transitions. [2020-12-22 08:11:43,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-12-22 08:11:43,577 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:11:43,577 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] [2020-12-22 08:11:43,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:11:43,578 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:11:43,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:11:43,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1923764620, now seen corresponding path program 1 times [2020-12-22 08:11:43,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:11:43,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817600747] [2020-12-22 08:11:43,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:11:43,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:11:44,083 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 08:11:44,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817600747] [2020-12-22 08:11:44,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:11:44,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:11:44,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304692921] [2020-12-22 08:11:44,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:11:44,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:11:44,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:11:44,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:11:44,086 INFO L87 Difference]: Start difference. First operand 126419 states and 185824 transitions. Second operand 3 states. [2020-12-22 08:11:54,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:11:54,465 INFO L93 Difference]: Finished difference Result 371816 states and 545220 transitions. [2020-12-22 08:11:54,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:11:54,465 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 314 [2020-12-22 08:11:54,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:11:54,922 INFO L225 Difference]: With dead ends: 371816 [2020-12-22 08:11:54,922 INFO L226 Difference]: Without dead ends: 247910 [2020-12-22 08:11:55,132 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 08:11:55,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247910 states. [2020-12-22 08:12:07,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247910 to 247908. [2020-12-22 08:12:07,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247908 states. [2020-12-22 08:12:08,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247908 states to 247908 states and 361490 transitions. [2020-12-22 08:12:08,423 INFO L78 Accepts]: Start accepts. Automaton has 247908 states and 361490 transitions. Word has length 314 [2020-12-22 08:12:08,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:12:08,423 INFO L481 AbstractCegarLoop]: Abstraction has 247908 states and 361490 transitions. [2020-12-22 08:12:08,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:12:08,424 INFO L276 IsEmpty]: Start isEmpty. Operand 247908 states and 361490 transitions. [2020-12-22 08:12:08,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-12-22 08:12:08,607 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:12:08,607 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] [2020-12-22 08:12:08,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:12:08,607 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:12:08,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:12:08,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1087426951, now seen corresponding path program 1 times [2020-12-22 08:12:08,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:12:08,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867010015] [2020-12-22 08:12:08,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:12:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:12:08,749 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 08:12:08,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867010015] [2020-12-22 08:12:08,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:12:08,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:12:08,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390699927] [2020-12-22 08:12:08,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:12:08,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:12:08,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:12:08,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:12:08,752 INFO L87 Difference]: Start difference. First operand 247908 states and 361490 transitions. Second operand 3 states. [2020-12-22 08:12:29,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:12:29,563 INFO L93 Difference]: Finished difference Result 738540 states and 1075770 transitions. [2020-12-22 08:12:29,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:12:29,564 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 314 [2020-12-22 08:12:29,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:12:30,577 INFO L225 Difference]: With dead ends: 738540 [2020-12-22 08:12:30,578 INFO L226 Difference]: Without dead ends: 491728 [2020-12-22 08:12:30,898 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 08:12:31,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491728 states. [2020-12-22 08:12:47,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491728 to 248134. [2020-12-22 08:12:47,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248134 states. [2020-12-22 08:12:47,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248134 states to 248134 states and 361778 transitions. [2020-12-22 08:12:47,851 INFO L78 Accepts]: Start accepts. Automaton has 248134 states and 361778 transitions. Word has length 314 [2020-12-22 08:12:47,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:12:47,851 INFO L481 AbstractCegarLoop]: Abstraction has 248134 states and 361778 transitions. [2020-12-22 08:12:47,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:12:47,851 INFO L276 IsEmpty]: Start isEmpty. Operand 248134 states and 361778 transitions. [2020-12-22 08:12:48,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-12-22 08:12:48,021 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:12:48,021 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] [2020-12-22 08:12:48,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:12:48,022 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:12:48,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:12:48,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1491578821, now seen corresponding path program 1 times [2020-12-22 08:12:48,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:12:48,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286121594] [2020-12-22 08:12:48,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:12:48,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:12:48,644 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 08:12:48,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286121594] [2020-12-22 08:12:48,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:12:48,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:12:48,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506341426] [2020-12-22 08:12:48,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:12:48,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:12:48,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:12:48,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:12:48,647 INFO L87 Difference]: Start difference. First operand 248134 states and 361778 transitions. Second operand 3 states. [2020-12-22 08:13:14,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:13:14,274 INFO L93 Difference]: Finished difference Result 741428 states and 1080493 transitions. [2020-12-22 08:13:14,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:13:14,274 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 315 [2020-12-22 08:13:14,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:13:15,130 INFO L225 Difference]: With dead ends: 741428 [2020-12-22 08:13:15,130 INFO L226 Difference]: Without dead ends: 495170 [2020-12-22 08:13:15,498 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 08:13:15,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495170 states. [2020-12-22 08:13:32,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495170 to 248444. [2020-12-22 08:13:32,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248444 states. [2020-12-22 08:13:33,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248444 states to 248444 states and 362134 transitions. [2020-12-22 08:13:33,146 INFO L78 Accepts]: Start accepts. Automaton has 248444 states and 362134 transitions. Word has length 315 [2020-12-22 08:13:33,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:13:33,146 INFO L481 AbstractCegarLoop]: Abstraction has 248444 states and 362134 transitions. [2020-12-22 08:13:33,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:13:33,146 INFO L276 IsEmpty]: Start isEmpty. Operand 248444 states and 362134 transitions. [2020-12-22 08:13:33,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-12-22 08:13:33,329 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:13:33,331 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] [2020-12-22 08:13:33,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:13:33,331 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:13:33,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:13:33,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1854137489, now seen corresponding path program 1 times [2020-12-22 08:13:33,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:13:33,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149099698] [2020-12-22 08:13:33,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:13:33,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:13:33,546 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 08:13:33,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149099698] [2020-12-22 08:13:33,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:13:33,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:13:33,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585587590] [2020-12-22 08:13:33,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:13:33,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:13:33,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:13:33,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:13:33,550 INFO L87 Difference]: Start difference. First operand 248444 states and 362134 transitions. Second operand 3 states. [2020-12-22 08:13:58,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:13:58,878 INFO L93 Difference]: Finished difference Result 709033 states and 1031216 transitions. [2020-12-22 08:13:58,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:13:58,878 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 316 [2020-12-22 08:13:58,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:13:59,874 INFO L225 Difference]: With dead ends: 709033 [2020-12-22 08:13:59,874 INFO L226 Difference]: Without dead ends: 464395 [2020-12-22 08:14:00,168 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 08:14:00,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464395 states. [2020-12-22 08:14:29,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464395 to 464393. [2020-12-22 08:14:29,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464393 states. [2020-12-22 08:14:31,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464393 states to 464393 states and 670876 transitions. [2020-12-22 08:14:31,840 INFO L78 Accepts]: Start accepts. Automaton has 464393 states and 670876 transitions. Word has length 316 [2020-12-22 08:14:31,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:14:31,841 INFO L481 AbstractCegarLoop]: Abstraction has 464393 states and 670876 transitions. [2020-12-22 08:14:31,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:14:31,841 INFO L276 IsEmpty]: Start isEmpty. Operand 464393 states and 670876 transitions. [2020-12-22 08:14:32,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-12-22 08:14:32,962 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:14:32,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:14:32,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:14:32,973 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:14:32,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:14:32,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1803950796, now seen corresponding path program 1 times [2020-12-22 08:14:32,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:14:32,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767095993] [2020-12-22 08:14:32,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:14:33,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat