/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 09:05:26,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 09:05:26,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 09:05:26,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 09:05:26,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 09:05:26,145 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 09:05:26,148 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 09:05:26,157 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 09:05:26,160 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 09:05:26,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 09:05:26,167 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 09:05:26,169 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 09:05:26,169 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 09:05:26,172 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 09:05:26,174 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 09:05:26,176 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 09:05:26,177 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 09:05:26,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 09:05:26,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 09:05:26,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 09:05:26,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 09:05:26,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 09:05:26,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 09:05:26,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 09:05:26,211 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 09:05:26,216 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 09:05:26,217 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 09:05:26,219 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 09:05:26,220 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 09:05:26,221 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 09:05:26,221 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 09:05:26,222 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 09:05:26,222 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 09:05:26,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 09:05:26,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 09:05:26,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 09:05:26,225 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 09:05:26,273 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 09:05:26,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 09:05:26,277 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 09:05:26,277 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 09:05:26,278 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 09:05:26,278 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 09:05:26,278 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 09:05:26,278 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 09:05:26,279 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 09:05:26,279 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 09:05:26,280 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 09:05:26,280 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 09:05:26,280 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 09:05:26,281 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 09:05:26,281 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 09:05:26,281 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 09:05:26,281 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 09:05:26,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:05:26,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 09:05:26,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 09:05:26,282 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 09:05:26,282 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 09:05:26,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 09:05:26,283 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 09:05:26,283 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 09:05:26,283 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 09:05:26,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 09:05:26,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 09:05:26,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 09:05:26,728 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 09:05:26,729 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 09:05:26,730 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-12-22 09:05:26,811 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/683ed8011/ace2e2cf7b3948f5ad2d2f3d5c02a6aa/FLAG69b717d5e [2020-12-22 09:05:27,479 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 09:05:27,481 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-12-22 09:05:27,500 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/683ed8011/ace2e2cf7b3948f5ad2d2f3d5c02a6aa/FLAG69b717d5e [2020-12-22 09:05:27,762 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/683ed8011/ace2e2cf7b3948f5ad2d2f3d5c02a6aa [2020-12-22 09:05:27,766 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 09:05:27,769 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 09:05:27,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 09:05:27,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 09:05:27,781 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 09:05:27,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:05:27" (1/1) ... [2020-12-22 09:05:27,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71b2c15e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:05:27, skipping insertion in model container [2020-12-22 09:05:27,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:05:27" (1/1) ... [2020-12-22 09:05:27,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 09:05:27,910 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 09:05:28,375 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15189,15202] [2020-12-22 09:05:28,390 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15836,15849] [2020-12-22 09:05:28,415 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17220,17233] [2020-12-22 09:05:28,432 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18196,18209] [2020-12-22 09:05:28,531 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27561,27574] [2020-12-22 09:05:28,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:05:28,664 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 09:05:28,788 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15189,15202] [2020-12-22 09:05:28,796 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15836,15849] [2020-12-22 09:05:28,808 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17220,17233] [2020-12-22 09:05:28,819 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18196,18209] [2020-12-22 09:05:28,872 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27561,27574] [2020-12-22 09:05:28,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:05:28,936 INFO L208 MainTranslator]: Completed translation [2020-12-22 09:05:28,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:05:28 WrapperNode [2020-12-22 09:05:28,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 09:05:28,938 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 09:05:28,938 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 09:05:28,938 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 09:05:28,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:05:28" (1/1) ... [2020-12-22 09:05:28,968 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:05:28" (1/1) ... [2020-12-22 09:05:29,071 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 09:05:29,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 09:05:29,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 09:05:29,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 09:05:29,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:05:28" (1/1) ... [2020-12-22 09:05:29,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:05:28" (1/1) ... [2020-12-22 09:05:29,090 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:05:28" (1/1) ... [2020-12-22 09:05:29,090 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:05:28" (1/1) ... [2020-12-22 09:05:29,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:05:28" (1/1) ... [2020-12-22 09:05:29,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:05:28" (1/1) ... [2020-12-22 09:05:29,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:05:28" (1/1) ... [2020-12-22 09:05:29,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 09:05:29,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 09:05:29,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 09:05:29,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 09:05:29,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:05:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:05:29,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 09:05:29,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 09:05:29,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 09:05:29,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 09:05:30,822 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 09:05:30,823 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 09:05:30,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:05:30 BoogieIcfgContainer [2020-12-22 09:05:30,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 09:05:30,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 09:05:30,829 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 09:05:30,832 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 09:05:30,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:05:27" (1/3) ... [2020-12-22 09:05:30,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f14a57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:05:30, skipping insertion in model container [2020-12-22 09:05:30,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:05:28" (2/3) ... [2020-12-22 09:05:30,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f14a57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:05:30, skipping insertion in model container [2020-12-22 09:05:30,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:05:30" (3/3) ... [2020-12-22 09:05:30,836 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-12-22 09:05:30,844 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 09:05:30,849 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 09:05:30,872 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 09:05:30,919 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 09:05:30,919 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 09:05:30,919 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 09:05:30,919 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 09:05:30,919 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 09:05:30,920 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 09:05:30,920 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 09:05:30,920 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 09:05:30,956 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states. [2020-12-22 09:05:30,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-12-22 09:05:30,973 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:30,974 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] [2020-12-22 09:05:30,975 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:30,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:30,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1209893175, now seen corresponding path program 1 times [2020-12-22 09:05:30,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:30,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974047622] [2020-12-22 09:05:30,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:31,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:31,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:05:31,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974047622] [2020-12-22 09:05:31,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:31,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:05:31,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807759017] [2020-12-22 09:05:31,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:05:31,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:31,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:05:31,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:05:31,631 INFO L87 Difference]: Start difference. First operand 424 states. Second operand 3 states. [2020-12-22 09:05:31,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:31,796 INFO L93 Difference]: Finished difference Result 778 states and 1366 transitions. [2020-12-22 09:05:31,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:05:31,798 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 150 [2020-12-22 09:05:31,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:31,818 INFO L225 Difference]: With dead ends: 778 [2020-12-22 09:05:31,818 INFO L226 Difference]: Without dead ends: 612 [2020-12-22 09:05:31,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:05:31,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2020-12-22 09:05:31,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 610. [2020-12-22 09:05:31,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 610 states. [2020-12-22 09:05:31,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 895 transitions. [2020-12-22 09:05:31,951 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 895 transitions. Word has length 150 [2020-12-22 09:05:31,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:31,952 INFO L481 AbstractCegarLoop]: Abstraction has 610 states and 895 transitions. [2020-12-22 09:05:31,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:05:31,952 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 895 transitions. [2020-12-22 09:05:31,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-12-22 09:05:31,957 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:31,957 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] [2020-12-22 09:05:31,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 09:05:31,958 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:31,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:31,959 INFO L82 PathProgramCache]: Analyzing trace with hash 811877431, now seen corresponding path program 1 times [2020-12-22 09:05:31,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:31,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791265175] [2020-12-22 09:05:31,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:32,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:32,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:05:32,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791265175] [2020-12-22 09:05:32,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:32,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:05:32,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915648190] [2020-12-22 09:05:32,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:05:32,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:32,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:05:32,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:05:32,233 INFO L87 Difference]: Start difference. First operand 610 states and 895 transitions. Second operand 3 states. [2020-12-22 09:05:32,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:32,362 INFO L93 Difference]: Finished difference Result 1235 states and 1870 transitions. [2020-12-22 09:05:32,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:05:32,363 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 150 [2020-12-22 09:05:32,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:32,370 INFO L225 Difference]: With dead ends: 1235 [2020-12-22 09:05:32,370 INFO L226 Difference]: Without dead ends: 1012 [2020-12-22 09:05:32,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:05:32,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-12-22 09:05:32,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1010. [2020-12-22 09:05:32,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1010 states. [2020-12-22 09:05:32,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1507 transitions. [2020-12-22 09:05:32,411 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1507 transitions. Word has length 150 [2020-12-22 09:05:32,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:32,412 INFO L481 AbstractCegarLoop]: Abstraction has 1010 states and 1507 transitions. [2020-12-22 09:05:32,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:05:32,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1507 transitions. [2020-12-22 09:05:32,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-12-22 09:05:32,415 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:32,415 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] [2020-12-22 09:05:32,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 09:05:32,416 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:32,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:32,417 INFO L82 PathProgramCache]: Analyzing trace with hash 811446455, now seen corresponding path program 1 times [2020-12-22 09:05:32,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:32,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814273486] [2020-12-22 09:05:32,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:32,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:32,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:05:32,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814273486] [2020-12-22 09:05:32,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:32,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:05:32,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609097472] [2020-12-22 09:05:32,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:05:32,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:32,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:05:32,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:05:32,696 INFO L87 Difference]: Start difference. First operand 1010 states and 1507 transitions. Second operand 4 states. [2020-12-22 09:05:32,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:32,849 INFO L93 Difference]: Finished difference Result 2960 states and 4404 transitions. [2020-12-22 09:05:32,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:05:32,850 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-12-22 09:05:32,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:32,861 INFO L225 Difference]: With dead ends: 2960 [2020-12-22 09:05:32,861 INFO L226 Difference]: Without dead ends: 1959 [2020-12-22 09:05:32,864 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 09:05:32,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2020-12-22 09:05:32,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 1917. [2020-12-22 09:05:32,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1917 states. [2020-12-22 09:05:32,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 2845 transitions. [2020-12-22 09:05:32,951 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 2845 transitions. Word has length 150 [2020-12-22 09:05:32,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:32,951 INFO L481 AbstractCegarLoop]: Abstraction has 1917 states and 2845 transitions. [2020-12-22 09:05:32,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:05:32,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 2845 transitions. [2020-12-22 09:05:32,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-22 09:05:32,955 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:32,956 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] [2020-12-22 09:05:32,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 09:05:32,956 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:32,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:32,957 INFO L82 PathProgramCache]: Analyzing trace with hash -855435253, now seen corresponding path program 1 times [2020-12-22 09:05:32,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:32,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570163298] [2020-12-22 09:05:32,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:33,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:05:33,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570163298] [2020-12-22 09:05:33,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:33,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:05:33,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979546641] [2020-12-22 09:05:33,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:05:33,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:33,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:05:33,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:05:33,060 INFO L87 Difference]: Start difference. First operand 1917 states and 2845 transitions. Second operand 3 states. [2020-12-22 09:05:33,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:33,256 INFO L93 Difference]: Finished difference Result 5713 states and 8473 transitions. [2020-12-22 09:05:33,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:05:33,257 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 151 [2020-12-22 09:05:33,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:33,284 INFO L225 Difference]: With dead ends: 5713 [2020-12-22 09:05:33,285 INFO L226 Difference]: Without dead ends: 3824 [2020-12-22 09:05:33,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:05:33,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3824 states. [2020-12-22 09:05:33,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3824 to 1919. [2020-12-22 09:05:33,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1919 states. [2020-12-22 09:05:33,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1919 states to 1919 states and 2847 transitions. [2020-12-22 09:05:33,518 INFO L78 Accepts]: Start accepts. Automaton has 1919 states and 2847 transitions. Word has length 151 [2020-12-22 09:05:33,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:33,519 INFO L481 AbstractCegarLoop]: Abstraction has 1919 states and 2847 transitions. [2020-12-22 09:05:33,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:05:33,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1919 states and 2847 transitions. [2020-12-22 09:05:33,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-12-22 09:05:33,525 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:33,525 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] [2020-12-22 09:05:33,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 09:05:33,526 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:33,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:33,526 INFO L82 PathProgramCache]: Analyzing trace with hash 299372728, now seen corresponding path program 1 times [2020-12-22 09:05:33,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:33,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536914065] [2020-12-22 09:05:33,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:33,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:33,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:05:33,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536914065] [2020-12-22 09:05:33,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:33,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:05:33,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860599754] [2020-12-22 09:05:33,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:05:33,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:33,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:05:33,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:05:33,786 INFO L87 Difference]: Start difference. First operand 1919 states and 2847 transitions. Second operand 4 states. [2020-12-22 09:05:34,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:34,122 INFO L93 Difference]: Finished difference Result 5591 states and 8265 transitions. [2020-12-22 09:05:34,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:05:34,123 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-12-22 09:05:34,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:34,146 INFO L225 Difference]: With dead ends: 5591 [2020-12-22 09:05:34,146 INFO L226 Difference]: Without dead ends: 3702 [2020-12-22 09:05:34,154 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 09:05:34,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3702 states. [2020-12-22 09:05:34,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3702 to 3660. [2020-12-22 09:05:34,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3660 states. [2020-12-22 09:05:34,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3660 states to 3660 states and 5381 transitions. [2020-12-22 09:05:34,423 INFO L78 Accepts]: Start accepts. Automaton has 3660 states and 5381 transitions. Word has length 152 [2020-12-22 09:05:34,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:34,423 INFO L481 AbstractCegarLoop]: Abstraction has 3660 states and 5381 transitions. [2020-12-22 09:05:34,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:05:34,423 INFO L276 IsEmpty]: Start isEmpty. Operand 3660 states and 5381 transitions. [2020-12-22 09:05:34,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-22 09:05:34,429 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:34,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:05:34,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 09:05:34,431 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:34,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:34,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1884643476, now seen corresponding path program 1 times [2020-12-22 09:05:34,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:34,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308130817] [2020-12-22 09:05:34,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:34,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:34,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:05:34,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308130817] [2020-12-22 09:05:34,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:34,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:05:34,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789098470] [2020-12-22 09:05:34,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:05:34,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:34,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:05:34,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:05:34,535 INFO L87 Difference]: Start difference. First operand 3660 states and 5381 transitions. Second operand 3 states. [2020-12-22 09:05:34,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:34,999 INFO L93 Difference]: Finished difference Result 10904 states and 16023 transitions. [2020-12-22 09:05:34,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:05:34,999 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-12-22 09:05:35,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:35,039 INFO L225 Difference]: With dead ends: 10904 [2020-12-22 09:05:35,039 INFO L226 Difference]: Without dead ends: 7288 [2020-12-22 09:05:35,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:05:35,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7288 states. [2020-12-22 09:05:35,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7288 to 3664. [2020-12-22 09:05:35,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3664 states. [2020-12-22 09:05:35,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3664 states to 3664 states and 5385 transitions. [2020-12-22 09:05:35,443 INFO L78 Accepts]: Start accepts. Automaton has 3664 states and 5385 transitions. Word has length 153 [2020-12-22 09:05:35,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:35,445 INFO L481 AbstractCegarLoop]: Abstraction has 3664 states and 5385 transitions. [2020-12-22 09:05:35,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:05:35,448 INFO L276 IsEmpty]: Start isEmpty. Operand 3664 states and 5385 transitions. [2020-12-22 09:05:35,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-12-22 09:05:35,454 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:35,455 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] [2020-12-22 09:05:35,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 09:05:35,461 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:35,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:35,461 INFO L82 PathProgramCache]: Analyzing trace with hash -2086443719, now seen corresponding path program 1 times [2020-12-22 09:05:35,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:35,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605262181] [2020-12-22 09:05:35,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:35,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:35,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:05:35,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605262181] [2020-12-22 09:05:35,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:35,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:05:35,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961231260] [2020-12-22 09:05:35,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:05:35,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:35,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:05:35,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:05:35,700 INFO L87 Difference]: Start difference. First operand 3664 states and 5385 transitions. Second operand 4 states. [2020-12-22 09:05:36,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:36,220 INFO L93 Difference]: Finished difference Result 9919 states and 14516 transitions. [2020-12-22 09:05:36,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:05:36,220 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-12-22 09:05:36,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:36,274 INFO L225 Difference]: With dead ends: 9919 [2020-12-22 09:05:36,274 INFO L226 Difference]: Without dead ends: 6303 [2020-12-22 09:05:36,283 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 09:05:36,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6303 states. [2020-12-22 09:05:36,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6303 to 6261. [2020-12-22 09:05:36,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6261 states. [2020-12-22 09:05:36,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6261 states to 6261 states and 9076 transitions. [2020-12-22 09:05:36,773 INFO L78 Accepts]: Start accepts. Automaton has 6261 states and 9076 transitions. Word has length 154 [2020-12-22 09:05:36,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:36,773 INFO L481 AbstractCegarLoop]: Abstraction has 6261 states and 9076 transitions. [2020-12-22 09:05:36,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:05:36,773 INFO L276 IsEmpty]: Start isEmpty. Operand 6261 states and 9076 transitions. [2020-12-22 09:05:36,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-12-22 09:05:36,783 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:36,783 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:05:36,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 09:05:36,784 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:36,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:36,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1188564147, now seen corresponding path program 1 times [2020-12-22 09:05:36,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:36,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087812710] [2020-12-22 09:05:36,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:36,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:36,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:05:36,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087812710] [2020-12-22 09:05:36,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:36,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:05:36,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163505807] [2020-12-22 09:05:36,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:05:36,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:36,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:05:36,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:05:36,860 INFO L87 Difference]: Start difference. First operand 6261 states and 9076 transitions. Second operand 3 states. [2020-12-22 09:05:37,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:37,630 INFO L93 Difference]: Finished difference Result 18351 states and 26650 transitions. [2020-12-22 09:05:37,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:05:37,630 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 155 [2020-12-22 09:05:37,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:37,659 INFO L225 Difference]: With dead ends: 18351 [2020-12-22 09:05:37,659 INFO L226 Difference]: Without dead ends: 12430 [2020-12-22 09:05:37,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:05:37,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12430 states. [2020-12-22 09:05:38,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12430 to 6269. [2020-12-22 09:05:38,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6269 states. [2020-12-22 09:05:38,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6269 states to 6269 states and 9084 transitions. [2020-12-22 09:05:38,259 INFO L78 Accepts]: Start accepts. Automaton has 6269 states and 9084 transitions. Word has length 155 [2020-12-22 09:05:38,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:38,260 INFO L481 AbstractCegarLoop]: Abstraction has 6269 states and 9084 transitions. [2020-12-22 09:05:38,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:05:38,260 INFO L276 IsEmpty]: Start isEmpty. Operand 6269 states and 9084 transitions. [2020-12-22 09:05:38,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-12-22 09:05:38,273 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:38,273 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] [2020-12-22 09:05:38,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 09:05:38,273 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:38,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:38,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1615046538, now seen corresponding path program 1 times [2020-12-22 09:05:38,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:38,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653402779] [2020-12-22 09:05:38,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:38,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:05:38,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653402779] [2020-12-22 09:05:38,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:38,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:05:38,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481253317] [2020-12-22 09:05:38,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:05:38,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:38,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:05:38,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:05:38,539 INFO L87 Difference]: Start difference. First operand 6269 states and 9084 transitions. Second operand 5 states. [2020-12-22 09:05:39,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:39,340 INFO L93 Difference]: Finished difference Result 18287 states and 26409 transitions. [2020-12-22 09:05:39,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:05:39,341 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-12-22 09:05:39,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:39,369 INFO L225 Difference]: With dead ends: 18287 [2020-12-22 09:05:39,369 INFO L226 Difference]: Without dead ends: 12106 [2020-12-22 09:05:39,380 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 09:05:39,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12106 states. [2020-12-22 09:05:40,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12106 to 12064. [2020-12-22 09:05:40,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12064 states. [2020-12-22 09:05:40,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12064 states to 12064 states and 17266 transitions. [2020-12-22 09:05:40,293 INFO L78 Accepts]: Start accepts. Automaton has 12064 states and 17266 transitions. Word has length 156 [2020-12-22 09:05:40,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:40,293 INFO L481 AbstractCegarLoop]: Abstraction has 12064 states and 17266 transitions. [2020-12-22 09:05:40,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:05:40,293 INFO L276 IsEmpty]: Start isEmpty. Operand 12064 states and 17266 transitions. [2020-12-22 09:05:40,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-12-22 09:05:40,310 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:40,310 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] [2020-12-22 09:05:40,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 09:05:40,311 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:40,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:40,311 INFO L82 PathProgramCache]: Analyzing trace with hash 625143354, now seen corresponding path program 1 times [2020-12-22 09:05:40,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:40,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426870438] [2020-12-22 09:05:40,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:40,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:40,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:05:40,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426870438] [2020-12-22 09:05:40,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:40,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:05:40,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891567952] [2020-12-22 09:05:40,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:05:40,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:40,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:05:40,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:05:40,497 INFO L87 Difference]: Start difference. First operand 12064 states and 17266 transitions. Second operand 4 states. [2020-12-22 09:05:41,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:41,126 INFO L93 Difference]: Finished difference Result 21241 states and 30375 transitions. [2020-12-22 09:05:41,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:05:41,127 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2020-12-22 09:05:41,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:41,148 INFO L225 Difference]: With dead ends: 21241 [2020-12-22 09:05:41,148 INFO L226 Difference]: Without dead ends: 9251 [2020-12-22 09:05:41,161 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 09:05:41,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9251 states. [2020-12-22 09:05:41,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9251 to 9251. [2020-12-22 09:05:41,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9251 states. [2020-12-22 09:05:41,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9251 states to 9251 states and 13212 transitions. [2020-12-22 09:05:41,885 INFO L78 Accepts]: Start accepts. Automaton has 9251 states and 13212 transitions. Word has length 156 [2020-12-22 09:05:41,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:41,888 INFO L481 AbstractCegarLoop]: Abstraction has 9251 states and 13212 transitions. [2020-12-22 09:05:41,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:05:41,888 INFO L276 IsEmpty]: Start isEmpty. Operand 9251 states and 13212 transitions. [2020-12-22 09:05:41,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-12-22 09:05:41,902 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:41,902 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:05:41,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 09:05:41,903 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:41,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:41,903 INFO L82 PathProgramCache]: Analyzing trace with hash -2020914348, now seen corresponding path program 1 times [2020-12-22 09:05:41,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:41,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516914419] [2020-12-22 09:05:41,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:41,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:42,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:05:42,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516914419] [2020-12-22 09:05:42,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:42,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:05:42,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296744522] [2020-12-22 09:05:42,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:05:42,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:42,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:05:42,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:05:42,074 INFO L87 Difference]: Start difference. First operand 9251 states and 13212 transitions. Second operand 3 states. [2020-12-22 09:05:42,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:42,723 INFO L93 Difference]: Finished difference Result 22836 states and 33228 transitions. [2020-12-22 09:05:42,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:05:42,724 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2020-12-22 09:05:42,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:42,757 INFO L225 Difference]: With dead ends: 22836 [2020-12-22 09:05:42,757 INFO L226 Difference]: Without dead ends: 14197 [2020-12-22 09:05:42,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:05:42,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14197 states. [2020-12-22 09:05:43,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14197 to 12165. [2020-12-22 09:05:43,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12165 states. [2020-12-22 09:05:43,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12165 states to 12165 states and 17917 transitions. [2020-12-22 09:05:43,824 INFO L78 Accepts]: Start accepts. Automaton has 12165 states and 17917 transitions. Word has length 158 [2020-12-22 09:05:43,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:43,824 INFO L481 AbstractCegarLoop]: Abstraction has 12165 states and 17917 transitions. [2020-12-22 09:05:43,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:05:43,824 INFO L276 IsEmpty]: Start isEmpty. Operand 12165 states and 17917 transitions. [2020-12-22 09:05:43,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-12-22 09:05:43,835 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:43,835 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] [2020-12-22 09:05:43,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 09:05:43,835 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:43,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:43,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1799463421, now seen corresponding path program 1 times [2020-12-22 09:05:43,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:43,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2425860] [2020-12-22 09:05:43,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:43,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:43,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:05:43,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2425860] [2020-12-22 09:05:43,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:43,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:05:43,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293167522] [2020-12-22 09:05:43,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:05:43,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:43,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:05:43,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:05:43,918 INFO L87 Difference]: Start difference. First operand 12165 states and 17917 transitions. Second operand 3 states. [2020-12-22 09:05:44,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:44,840 INFO L93 Difference]: Finished difference Result 28249 states and 42327 transitions. [2020-12-22 09:05:44,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:05:44,841 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 160 [2020-12-22 09:05:44,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:44,872 INFO L225 Difference]: With dead ends: 28249 [2020-12-22 09:05:44,872 INFO L226 Difference]: Without dead ends: 18499 [2020-12-22 09:05:44,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:05:44,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18499 states. [2020-12-22 09:05:46,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18499 to 16601. [2020-12-22 09:05:46,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16601 states. [2020-12-22 09:05:46,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16601 states to 16601 states and 24989 transitions. [2020-12-22 09:05:46,247 INFO L78 Accepts]: Start accepts. Automaton has 16601 states and 24989 transitions. Word has length 160 [2020-12-22 09:05:46,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:46,247 INFO L481 AbstractCegarLoop]: Abstraction has 16601 states and 24989 transitions. [2020-12-22 09:05:46,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:05:46,247 INFO L276 IsEmpty]: Start isEmpty. Operand 16601 states and 24989 transitions. [2020-12-22 09:05:46,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-12-22 09:05:46,259 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:46,260 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] [2020-12-22 09:05:46,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 09:05:46,260 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:46,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:46,261 INFO L82 PathProgramCache]: Analyzing trace with hash 541164788, now seen corresponding path program 1 times [2020-12-22 09:05:46,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:46,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195344113] [2020-12-22 09:05:46,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:46,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:46,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:05:46,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195344113] [2020-12-22 09:05:46,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:46,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 09:05:46,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490528426] [2020-12-22 09:05:46,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 09:05:46,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:46,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 09:05:46,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 09:05:46,532 INFO L87 Difference]: Start difference. First operand 16601 states and 24989 transitions. Second operand 9 states. [2020-12-22 09:05:52,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:52,127 INFO L93 Difference]: Finished difference Result 83311 states and 127734 transitions. [2020-12-22 09:05:52,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 09:05:52,127 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 161 [2020-12-22 09:05:52,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:52,244 INFO L225 Difference]: With dead ends: 83311 [2020-12-22 09:05:52,244 INFO L226 Difference]: Without dead ends: 67460 [2020-12-22 09:05:52,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2020-12-22 09:05:52,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67460 states. [2020-12-22 09:05:56,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67460 to 44914. [2020-12-22 09:05:56,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44914 states. [2020-12-22 09:05:56,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44914 states to 44914 states and 67674 transitions. [2020-12-22 09:05:56,126 INFO L78 Accepts]: Start accepts. Automaton has 44914 states and 67674 transitions. Word has length 161 [2020-12-22 09:05:56,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:56,126 INFO L481 AbstractCegarLoop]: Abstraction has 44914 states and 67674 transitions. [2020-12-22 09:05:56,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 09:05:56,126 INFO L276 IsEmpty]: Start isEmpty. Operand 44914 states and 67674 transitions. [2020-12-22 09:05:56,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-12-22 09:05:56,147 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:56,148 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] [2020-12-22 09:05:56,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 09:05:56,148 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:56,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:56,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1621225530, now seen corresponding path program 1 times [2020-12-22 09:05:56,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:56,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773551910] [2020-12-22 09:05:56,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:56,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:56,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:05:56,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773551910] [2020-12-22 09:05:56,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:56,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:05:56,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140407368] [2020-12-22 09:05:56,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:05:56,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:56,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:05:56,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:05:56,312 INFO L87 Difference]: Start difference. First operand 44914 states and 67674 transitions. Second operand 4 states. [2020-12-22 09:06:00,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:06:00,221 INFO L93 Difference]: Finished difference Result 86497 states and 133603 transitions. [2020-12-22 09:06:00,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:06:00,222 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2020-12-22 09:06:00,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:06:00,285 INFO L225 Difference]: With dead ends: 86497 [2020-12-22 09:06:00,286 INFO L226 Difference]: Without dead ends: 53914 [2020-12-22 09:06:00,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:06:00,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53914 states. [2020-12-22 09:06:04,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53914 to 53912. [2020-12-22 09:06:04,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53912 states. [2020-12-22 09:06:04,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53912 states to 53912 states and 81444 transitions. [2020-12-22 09:06:04,503 INFO L78 Accepts]: Start accepts. Automaton has 53912 states and 81444 transitions. Word has length 161 [2020-12-22 09:06:04,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:06:04,504 INFO L481 AbstractCegarLoop]: Abstraction has 53912 states and 81444 transitions. [2020-12-22 09:06:04,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:06:04,504 INFO L276 IsEmpty]: Start isEmpty. Operand 53912 states and 81444 transitions. [2020-12-22 09:06:04,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-12-22 09:06:04,519 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:04,520 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] [2020-12-22 09:06:04,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 09:06:04,520 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:04,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:04,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1317025973, now seen corresponding path program 1 times [2020-12-22 09:06:04,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:04,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723369199] [2020-12-22 09:06:04,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:04,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:04,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:06:04,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723369199] [2020-12-22 09:06:04,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:04,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:06:04,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207186695] [2020-12-22 09:06:04,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:06:04,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:04,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:06:04,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:06:04,736 INFO L87 Difference]: Start difference. First operand 53912 states and 81444 transitions. Second operand 4 states. [2020-12-22 09:06:11,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:06:11,336 INFO L93 Difference]: Finished difference Result 141812 states and 213715 transitions. [2020-12-22 09:06:11,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:06:11,337 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2020-12-22 09:06:11,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:06:11,461 INFO L225 Difference]: With dead ends: 141812 [2020-12-22 09:06:11,461 INFO L226 Difference]: Without dead ends: 88032 [2020-12-22 09:06:11,508 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 09:06:11,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88032 states. [2020-12-22 09:06:18,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88032 to 87998. [2020-12-22 09:06:18,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87998 states. [2020-12-22 09:06:18,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87998 states to 87998 states and 131124 transitions. [2020-12-22 09:06:18,441 INFO L78 Accepts]: Start accepts. Automaton has 87998 states and 131124 transitions. Word has length 161 [2020-12-22 09:06:18,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:06:18,441 INFO L481 AbstractCegarLoop]: Abstraction has 87998 states and 131124 transitions. [2020-12-22 09:06:18,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:06:18,441 INFO L276 IsEmpty]: Start isEmpty. Operand 87998 states and 131124 transitions. [2020-12-22 09:06:18,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-12-22 09:06:18,466 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:18,466 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] [2020-12-22 09:06:18,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 09:06:18,467 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:18,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:18,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1852395152, now seen corresponding path program 1 times [2020-12-22 09:06:18,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:18,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082150089] [2020-12-22 09:06:18,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:18,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:18,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:06:18,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082150089] [2020-12-22 09:06:18,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:18,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:06:18,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204080211] [2020-12-22 09:06:18,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:06:18,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:18,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:06:18,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:06:18,602 INFO L87 Difference]: Start difference. First operand 87998 states and 131124 transitions. Second operand 4 states. [2020-12-22 09:06:25,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:06:25,470 INFO L93 Difference]: Finished difference Result 158524 states and 235959 transitions. [2020-12-22 09:06:25,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:06:25,471 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2020-12-22 09:06:25,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:06:25,748 INFO L225 Difference]: With dead ends: 158524 [2020-12-22 09:06:25,748 INFO L226 Difference]: Without dead ends: 87998 [2020-12-22 09:06:25,795 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 09:06:25,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87998 states. [2020-12-22 09:06:32,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87998 to 87998. [2020-12-22 09:06:32,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87998 states. [2020-12-22 09:06:32,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87998 states to 87998 states and 131123 transitions. [2020-12-22 09:06:32,729 INFO L78 Accepts]: Start accepts. Automaton has 87998 states and 131123 transitions. Word has length 163 [2020-12-22 09:06:32,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:06:32,729 INFO L481 AbstractCegarLoop]: Abstraction has 87998 states and 131123 transitions. [2020-12-22 09:06:32,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:06:32,729 INFO L276 IsEmpty]: Start isEmpty. Operand 87998 states and 131123 transitions. [2020-12-22 09:06:32,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-12-22 09:06:32,750 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:32,751 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] [2020-12-22 09:06:32,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 09:06:32,751 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:32,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:32,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1925329901, now seen corresponding path program 1 times [2020-12-22 09:06:32,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:32,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858953463] [2020-12-22 09:06:32,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:32,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:32,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:06:32,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858953463] [2020-12-22 09:06:32,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:32,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:06:32,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455070297] [2020-12-22 09:06:32,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:06:32,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:32,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:06:32,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:06:32,876 INFO L87 Difference]: Start difference. First operand 87998 states and 131123 transitions. Second operand 3 states. [2020-12-22 09:06:42,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:06:42,957 INFO L93 Difference]: Finished difference Result 224211 states and 334536 transitions. [2020-12-22 09:06:42,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:06:42,957 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 163 [2020-12-22 09:06:42,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:06:43,176 INFO L225 Difference]: With dead ends: 224211 [2020-12-22 09:06:43,176 INFO L226 Difference]: Without dead ends: 137775 [2020-12-22 09:06:43,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:06:43,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137775 states. [2020-12-22 09:06:53,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137775 to 137745. [2020-12-22 09:06:53,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137745 states. [2020-12-22 09:06:54,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137745 states to 137745 states and 203322 transitions. [2020-12-22 09:06:54,225 INFO L78 Accepts]: Start accepts. Automaton has 137745 states and 203322 transitions. Word has length 163 [2020-12-22 09:06:54,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:06:54,225 INFO L481 AbstractCegarLoop]: Abstraction has 137745 states and 203322 transitions. [2020-12-22 09:06:54,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:06:54,225 INFO L276 IsEmpty]: Start isEmpty. Operand 137745 states and 203322 transitions. [2020-12-22 09:06:54,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-12-22 09:06:54,265 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:54,265 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] [2020-12-22 09:06:54,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 09:06:54,266 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:54,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:54,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1815793780, now seen corresponding path program 1 times [2020-12-22 09:06:54,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:54,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743364065] [2020-12-22 09:06:54,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:54,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:54,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:06:54,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743364065] [2020-12-22 09:06:54,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:54,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:06:54,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612917864] [2020-12-22 09:06:54,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:06:54,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:54,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:06:54,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:06:54,365 INFO L87 Difference]: Start difference. First operand 137745 states and 203322 transitions. Second operand 3 states. [2020-12-22 09:07:10,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:07:10,924 INFO L93 Difference]: Finished difference Result 335052 states and 498271 transitions. [2020-12-22 09:07:10,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:07:10,924 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 167 [2020-12-22 09:07:10,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:07:11,510 INFO L225 Difference]: With dead ends: 335052 [2020-12-22 09:07:11,510 INFO L226 Difference]: Without dead ends: 218779 [2020-12-22 09:07:11,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:07:11,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218779 states.